Publish

- @0x/contracts-erc20@3.3.39
 - @0x/contracts-test-utils@5.4.30
 - @0x/contracts-treasury@1.4.22
 - @0x/contracts-utils@4.8.20
 - @0x/contracts-zero-ex@0.36.6
 - @0x/asset-swapper@16.66.6
 - @0x/contract-addresses@6.22.0
 - @0x/contract-wrappers@13.21.3
 - @0x/protocol-utils@11.16.6

.circleci/config.yml

@@ -1,93 +1,148 @@
-version: 2
+version: 2.1
+
+parameters:
+  cache_version:
+    type: string
+    default: v3
 
 jobs:
     build:
-        resource_class: medium+
+        resource_class: xlarge
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         environment:
-            CONTRACTS_COMMIT_HASH: '9ed05f5'
+            NODE_OPTIONS: '--max-old-space-size=16384'
         working_directory: ~/repo
         steps:
             - checkout
+            - run: git submodule update --init --recursive
             - run: echo 'export PATH=$HOME/CIRCLE_PROJECT_REPONAME/node_modules/.bin:$PATH' >> $BASH_ENV
+            - restore_cache:
+                  keys:
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
             - run:
                   name: install-yarn
-                  command: npm install --force --global yarn@1.17.0
+                  command: npm install --force --global yarn@1.22.0
             - run:
                   name: yarn
                   command: yarn --frozen-lockfile --ignore-engines install || yarn --frozen-lockfile --ignore-engines install
             - setup_remote_docker
             - run: yarn build:ci
-            - run: yarn build:ts
             - save_cache:
-                  key: repo-{{ .Environment.CIRCLE_SHA1 }}
+                  key: repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
                   paths:
                       - ~/repo
+                      - ~/.cache/yarn
             - store_artifacts:
                   path: ~/repo/packages/abi-gen/test-cli/output
             - store_artifacts:
                   path: ~/repo/packages/contract-wrappers/generated_docs
     test-exchange-ganache:
-        resource_class: medium+
+        resource_class: xlarge
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
         steps:
+            - checkout
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
-            - run: yarn wsrun test:circleci @0x/contracts-exchange
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            - run: yarn wsrun -p @0x/contracts-exchange -m --serial -c test:circleci
     test-integrations-ganache:
-        resource_class: medium+
+        resource_class: xlarge
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
         steps:
+            - checkout
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
-            - run: yarn wsrun test:circleci @0x/contracts-integrations
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            - run: yarn wsrun -p @0x/contracts-integrations -m --serial -c test:circleci
     test-contracts-staking-ganache:
-        resource_class: medium+
+        resource_class: xlarge
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
         steps:
+            - checkout
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
-            - run: yarn wsrun test:circleci @0x/contracts-staking
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            - run: yarn wsrun -p @0x/contracts-staking -m --serial -c test:circleci
     test-contracts-extra-ganache:
-        resource_class: medium+
+        resource_class: xlarge
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
         steps:
+            - checkout
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
-            - run: yarn wsrun test:circleci @0x/contracts-exchange-forwarder @0x/contracts-coordinator
+                      - repo-{{ checksum "yarn.lock" }}
+            - run: yarn wsrun -p @0x/contracts-exchange-forwarder -p @0x/contracts-coordinator -m --serial -c test:circleci
     test-contracts-rest-ganache:
-        resource_class: medium+
+        resource_class: xlarge
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
         steps:
+            - checkout
+            - run: |
+                git diff --name-only development >> changed.txt
+                if ! grep -q \.sol changed.txt; then
+                  circleci-agent step halt
+                fi
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
-            - run: yarn wsrun test:circleci @0x/contracts-multisig @0x/contracts-utils @0x/contracts-exchange-libs @0x/contracts-erc20 @0x/contracts-erc721 @0x/contracts-erc1155 @0x/contracts-asset-proxy @0x/contracts-broker @0x/contracts-zero-ex
-    test-publish:
-        resource_class: medium+
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            - run: |
+                yarn wsrun \
+                  -p @0x/contracts-multisig \
+                  -p @0x/contracts-utils \
+                  -p @0x/contracts-exchange-libs \
+                  -p @0x/contracts-erc20 \
+                  -p @0x/contracts-erc721 \
+                  -p @0x/contracts-erc1155 \
+                  -p @0x/contracts-asset-proxy \
+                  -p @0x/contracts-broker \
+                  -p @0x/contracts-zero-ex \
+                  -m --serial -c test:circleci
+    test-foundry:
+        resource_class: xlarge
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: ghcr.io/foundry-rs/foundry:latest
+        working_directory: ~/repo/contracts/zero-ex
+        steps:
+            - checkout
+            - run: |
+                git diff --name-only development >> changed.txt
+                if ! grep -q \.sol changed.txt; then
+                  circleci-agent step halt
+                fi
+            - restore_cache:
+                  keys:
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            # - run: forge install
+            - run: forge test
+    test-publish:
+        resource_class: large
+        environment:
+            NODE_OPTIONS: '--max-old-space-size=6442'
+        docker:
+            - image: node:16
             - image: 0xorg/verdaccio
         working_directory: ~/repo
         steps:
+            - checkout
+            - run: |
+                git diff --name-only development >> changed.txt
+                if ! grep -q packages/ changed.txt; then
+                  circleci-agent step halt
+                fi
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
             - run:
                   command: yarn test:publish:circleci
                   no_output_timeout: 1800
@@ -95,71 +150,82 @@ jobs:
                   path: ~/.npm/_logs
     test-doc-generation:
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
         steps:
+            - checkout
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
             - run:
                   command: yarn test:generate_docs:circleci
                   no_output_timeout: 1200
     test-rest:
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
+        environment:
+            RUST_ROUTER: 'true'
         steps:
+            - checkout
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
-            - run: yarn wsrun test:circleci @0x/contracts-test-utils
-            - run: yarn wsrun test:circleci @0x/contract-artifacts
-            - run: yarn wsrun test:circleci @0x/contract-wrappers-test
-            - run: yarn wsrun test:circleci @0x/migrations
-            - run: yarn wsrun test:circleci @0x/order-utils
-            - run: yarn wsrun test:circleci @0x/asset-swapper
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            - run: yarn wsrun -p @0x/contracts-test-utils -m --serial -c test:circleci
+            - run: yarn wsrun -p @0x/contract-addresses -m --serial -c test:circleci
+            - run: yarn wsrun -p @0x/contract-artifacts -m --serial -c test:circleci
+            - run: yarn wsrun -p @0x/contract-wrappers-test -m --serial -c test:circleci
+            - run: yarn wsrun -p @0x/order-utils -m --serial -c test:circleci
             - save_cache:
-                  key: coverage-contract-wrappers-test-{{ .Environment.CIRCLE_SHA1 }}
+                  key: coverage-contract-wrappers-test-{{ checksum "yarn.lock" }}
                   paths:
                       - ~/repo/packages/contract-wrappers-test/coverage/lcov.info
             - save_cache:
-                  key: coverage-order-utils-{{ .Environment.CIRCLE_SHA1 }}
+                  key: coverage-order-utils-{{ checksum "yarn.lock" }}
                   paths:
                       - ~/repo/packages/order-utils/coverage/lcov.info
             - save_cache:
-                  key: coverage-web3-wrapper-{{ .Environment.CIRCLE_SHA1 }}
+                  key: coverage-web3-wrapper-{{ checksum "yarn.lock" }}
                   paths:
                       - ~/repo/packages/web3-wrapper/coverage/lcov.info
     static-tests:
         resource_class: large
-        working_directory: ~/repo
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         steps:
+            - checkout
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
-            - run: yarn lerna run lint
-            - run: yarn prettier:ci
-            - run: yarn deps_versions:ci
-            - run: yarn diff_md_docs:ci
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            - run:
+                command: yarn lerna run lint
+                working_directory: ~/repo
+            - run:
+                command: yarn prettier:ci
+                working_directory: ~/repo
+            - run:
+                command: yarn deps_versions:ci
+                working_directory: ~/repo
+            - run:
+                command: yarn diff_md_docs:ci
+                working_directory: ~/repo
     submit-coverage:
         docker:
-            - image: nikolaik/python-nodejs:python3.7-nodejs10
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:
                   keys:
-                      - repo-{{ .Environment.CIRCLE_SHA1 }}
+                      - repo-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
             - restore_cache:
                   keys:
-                      - coverage-contract-wrappers-test-{{ .Environment.CIRCLE_SHA1 }}
+                      - coverage-contract-wrappers-test-{{ checksum "yarn.lock" }}
             - restore_cache:
                   keys:
-                      - coverage-order-utils-{{ .Environment.CIRCLE_SHA1 }}
+                      - coverage-order-utils-{{ checksum "yarn.lock" }}
             - restore_cache:
                   keys:
-                      - coverage-contracts-{{ .Environment.CIRCLE_SHA1 }}
+                      - coverage-contracts-{{ checksum "yarn.lock" }}
             - run: yarn report_coverage
 workflows:
     version: 2
@@ -179,6 +245,9 @@ workflows:
             # - test-contracts-extra-ganache:
             #       requires:
             #           - build
+            - test-foundry:
+                  requires:
+                      - build
             - test-contracts-rest-ganache:
                   requires:
                       - build

.github/autolabeler.yml

@@ -1,7 +1,6 @@
 python: ['python-packages']
 contracts: ['contracts']
 @0x/contract-addresses: ['packages/contract-addresses']
-@0x/migrations: ['packages/migrations']
 @0x/order-utils: ['packages/order-utils']
 @0x/contract-artifacts: ['packages/contract-artifacts']
 @0x/contract-wrappers: ['packages/contract-wrappers']

.github/workflows/publish.yml

@@ -28,7 +28,7 @@ jobs:
                 fetch-depth: 0
             - uses: actions/setup-node@v1
               with:
-                node-version: 10
+                node-version: 16
             - uses: actions/setup-python@v2
             - name: 'configure git'
               run: |

.gitignore

@@ -75,8 +75,9 @@ generated_docs/
 
 TODO.md
 
-# VSCode file
+# IDE file
 .vscode
+.idea
 
 # generated contract artifacts/
 contracts/broker/generated-artifacts/
@@ -172,6 +173,15 @@ contracts/zero-ex/test/generated-wrappers/
 contracts/treasury/generated-wrappers/
 contracts/treasury/test/generated-wrappers/
 
+# foundry artifacts
+contracts/zero-ex/foundry-artifacts/
+
+# foundry cache 
+contracts/zero-ex/foundry-cache/
+
+# typechain wrappers
+contracts/zero-ex/typechain-wrappers/
+
 # Doc README copy
 packages/*/docs/README.md
 

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "contracts/zero-ex/contracts/deps/forge-std"]
+	path = contracts/zero-ex/contracts/deps/forge-std
+	url = https://github.com/foundry-rs/forge-std

.prettierrc

@@ -3,5 +3,6 @@
     "tabWidth": 4,
     "singleQuote": true,
     "trailingComma": "all",
-    "bracketSpacing": true
+    "bracketSpacing": true,
+    "arrowParens": "avoid"
 }

CODEOWNERS

@@ -1,18 +1,20 @@
 # See https://help.github.com/articles/about-codeowners/
+
 # for more info about CODEOWNERS file
 
 # It uses the same pattern rule for gitignore file
+
 # https://git-scm.com/docs/gitignore#_pattern_format
 
-# Website
-packages/asset-swapper/  @BMillman19 @fragosti @dave4506
-packages/instant/  @BMillman19 @fragosti @dave4506
+packages/asset-swapper/ @dekz @dextracker @kyu-c
 
 # Dev tools & setup
-.circleci/ @dorothy-zbornak
-packages/contract-addresses/ @abandeali1
-packages/contract-artifacts/ @abandeali1
-packages/order-utils/ @dorothy-zbornak 
+
+.circleci/ @dekz
+packages/contract-addresses/ @dekz @dextracker @kyu-c
+packages/contract-artifacts/ @dekz
+packages/protocol-utils/ @dekz
 
 # Protocol/smart contracts
-contracts/ @abandeali1 @hysz @dorothy-zbornak @mzhu25
+
+contracts/ @dekz @dextracker

ISSUE_TEMPLATE.md

@@ -49,7 +49,6 @@
 | Package | Version |
 | ------: | :------ |
 
-
 <!-- For example:
 |             `0x.js` | 2.0.4   |
 | `Exchange Contract` | v2      |

README.md

@@ -2,7 +2,7 @@
 
 ---
 
-[0x][website-url] is an open protocol that facilitates trustless, low friction exchange of Ethereum-based assets. For more information on how it works, check out the [0x protocol specification](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md).
+[0x][website-url] is an open protocol that facilitates trustless, low friction exchange of Ethereum-based assets. For more information on how it works, check out the [0x protocol specification](https://protocol.0x.org/).
 
 This repository is a monorepo including the 0x protocol smart contracts and numerous developer tools. Each public sub-package is independently published to NPM.
 
@@ -15,28 +15,18 @@ This repository is a monorepo including the 0x protocol smart contracts and nume
 
 ## Packages
 
-Visit our [developer portal](https://0x.org/docs/tools/order-utils) for a comprehensive list of core & community maintained packages. All packages maintained with this monorepo are listed below.
+Visit our [developer portal](https://0x.org/docs/) for a comprehensive list of core & community maintained packages. All packages maintained with this monorepo are listed below.
 
 ### Solidity Packages
 
 These packages are all under development. See [/contracts/README.md](/contracts/README.md) for a list of deployed packages.
 
-| Package                                                             | Version                                                                                                                                     | Description                                                                                                                                                                                                                                           |
-| ------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| [`@0x/contracts-asset-proxy`](/contracts/asset-proxy)               | [![npm](https://img.shields.io/npm/v/@0x/contracts-asset-proxy.svg)](https://www.npmjs.com/package/@0x/contracts-asset-proxy)               | [`AssetProxy`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxy) contracts used within the protocol                                                                                               |
-| [`@0x/contracts-erc20`](/contracts/erc20)                           | [![npm](https://img.shields.io/npm/v/@0x/contracts-erc20.svg)](https://www.npmjs.com/package/@0x/contracts-erc20)                           | Implementations of various ERC20 tokens                                                                                                                                                                                                               |
-| [`@0x/contracts-erc721`](/contracts/erc721)                         | [![npm](https://img.shields.io/npm/v/@0x/contracts-erc721.svg)](https://www.npmjs.com/package/@0x/contracts-erc721)                         | Implementations of various ERC721 tokens                                                                                                                                                                                                              |
-| [`@0x/contracts-erc1155`](/contracts/erc1155)                       | [![npm](https://img.shields.io/npm/v/@0x/contracts-erc1155.svg)](https://www.npmjs.com/package/@0x/contracts-erc1155)                       | Implementations of various ERC1155 tokens                                                                                                                                                                                                             |
-| [`@0x/contracts-exchange`](/contracts/exchange)                     | [![npm](https://img.shields.io/npm/v/@0x/contracts-exchange.svg)](https://www.npmjs.com/package/@0x/contracts-exchange)                     | The [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange) contract used for settling trades within the protocol                                                                            |
-| [`@0x/contracts-exchange-forwarder`](/contracts/exchange-forwarder) | [![npm](https://img.shields.io/npm/v/@0x/contracts-exchange-forwarder.svg)](https://www.npmjs.com/package/@0x/contracts-exchange-forwarder) | A [`Forwarder`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/forwarder-specification.md) contract used to simplify UX for interacting with the protocol                                                                      |
-| [`@0x/contracts-exchange-libs`](/contracts/exchange-libs)           | [![npm](https://img.shields.io/npm/v/@0x/contracts-exchange-libs.svg)](https://www.npmjs.com/package/@0x/contracts-exchange-libs)           | Protocol specific libraries used within the [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange) contract                                                                                 |
-| [`@0x/contracts-extensions`](/contracts/extensions)                 | [![npm](https://img.shields.io/npm/v/@0x/contracts-extensions.svg)](https://www.npmjs.com/package/@0x/contracts-extensions)                 | Contracts that interact with and extend the functionality of the core protocol                                                                                                                                                                        |
-| [`@0x/contracts-multisig`](/contracts/multisig)                     | [![npm](https://img.shields.io/npm/v/@0x/contracts-multisig.svg)](https://www.npmjs.com/package/@0x/contracts-multisig)                     | Various implementations of multisignature wallets, including the [`AssetProxyOwner`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxyowner) contract that has permissions to upgrade the protocol |
-| [`@0x/contracts-test-utils`](/contracts/test-utils)                 | [![npm](https://img.shields.io/npm/v/@0x/contracts-test-utils.svg)](https://www.npmjs.com/package/@0x/contracts-test-utils)                 | TypeScript/Javascript shared utilities used for testing contracts                                                                                                                                                                                     |
-| [`@0x/contracts-utils`](/contracts/utils)                           | [![npm](https://img.shields.io/npm/v/@0x/contracts-utils.svg)](https://www.npmjs.com/package/@0x/contracts-utils)                           | Generic libraries and utilities used throughout all of the contracts                                                                                                                                                                                  |
-| [`@0x/contracts-coordinator`](/contracts/coordinator)               | [![npm](https://img.shields.io/npm/v/@0x/contracts-coordinator.svg)](https://www.npmjs.com/package/@0x/contracts-coordinator)               | A contract that allows users to execute 0x transactions with permission from a Coordinator                                                                                                                                                            |
-| [`@0x/contracts-dev-utils`](/contracts/dev-utils)                   | [![npm](https://img.shields.io/npm/v/@0x/contracts-dev-utils.svg)](https://www.npmjs.com/package/@0x/contracts-dev-utils)                   | A contract contains utility functions for developers (such as validating many orders using a single eth_call)                                                                                                                                         |
-| [`@0x/contracts-staking`](/contracts/staking)                       | [![npm](https://img.shields.io/npm/v/@0x/contracts-staking.svg)](https://www.npmjs.com/package/@0x/contracts-staking)                       | Implements the stake-based liquidity incentives defined by [`ZEIP-31`](https://github.com/0xProject/ZEIPs/issues/31)                                                                                                                                  |
+| Package                                             | Version                                                                                                                     | Description                                                          |
+| --------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------- |
+| [`@0x/contracts-zero-ex`](/contracts/zero-ex)       | [![npm](https://img.shields.io/npm/v/@0x/contracts-zero-ex.svg)](https://www.npmjs.com/package/@0x/contracts-zero-ex)       | The contracts used for settling trades within the protocol           |
+| [`@0x/contracts-erc20`](/contracts/erc20)           | [![npm](https://img.shields.io/npm/v/@0x/contracts-erc20.svg)](https://www.npmjs.com/package/@0x/contracts-erc20)           | Implementations of various ERC20 tokens                              |
+| [`@0x/contracts-test-utils`](/contracts/test-utils) | [![npm](https://img.shields.io/npm/v/@0x/contracts-test-utils.svg)](https://www.npmjs.com/package/@0x/contracts-test-utils) | TypeScript/Javascript shared utilities used for testing contracts    |
+| [`@0x/contracts-utils`](/contracts/utils)           | [![npm](https://img.shields.io/npm/v/@0x/contracts-utils.svg)](https://www.npmjs.com/package/@0x/contracts-utils)           | Generic libraries and utilities used throughout all of the contracts |
 
 ### TypeScript/Javascript Packages
 
@@ -44,10 +34,9 @@ These packages are all under development. See [/contracts/README.md](/contracts/
 
 | Package                                                  | Version                                                                                                                 | Description                                                                                    |
 | -------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- |
+| [`@0x/protocol-utils`](/packages/protocol-utils)         | [![npm](https://img.shields.io/npm/v/@0x/protocol-utils.svg)](https://www.npmjs.com/package/@0x/protocol-utils)         | A set of utilities for generating, parsing, signing and validating 0x orders                   |
 | [`@0x/contract-addresses`](/packages/contract-addresses) | [![npm](https://img.shields.io/npm/v/@0x/contract-addresses.svg)](https://www.npmjs.com/package/@0x/contract-addresses) | A tiny utility library for getting known deployed contract addresses for a particular network. |
 | [`@0x/contract-wrappers`](/packages/contract-wrappers)   | [![npm](https://img.shields.io/npm/v/@0x/contract-wrappers.svg)](https://www.npmjs.com/package/@0x/contract-wrappers)   | JS/TS wrappers for interacting with the 0x smart contracts                                     |
-| [`@0x/order-utils`](/packages/order-utils)               | [![npm](https://img.shields.io/npm/v/@0x/order-utils.svg)](https://www.npmjs.com/package/@0x/order-utils)               | A set of utilities for generating, parsing, signing and validating 0x orders                   |
-| [`@0x/migrations`](/packages/migrations)                 | [![npm](https://img.shields.io/npm/v/@0x/migrations.svg)](https://www.npmjs.com/package/@0x/migrations)                 | Migration tool for deploying 0x smart contracts on private testnets                            |
 | [`@0x/contract-artifacts`](/packages/contract-artifacts) | [![npm](https://img.shields.io/npm/v/@0x/contract-artifacts.svg)](https://www.npmjs.com/package/@0x/contract-artifacts) | 0x smart contract compilation artifacts                                                        |  |
 
 ## Usage
@@ -92,7 +81,7 @@ yarn build
 To build a specific package:
 
 ```bash
-PKG=@0x/contract-wrappers yarn build
+PKG=@0x/protocol-utils yarn build
 ```
 
 To build all contracts packages:
@@ -115,7 +104,7 @@ To watch a specific package and all it's dependent packages:
 PKG=[NPM_PACKAGE_NAME] yarn watch
 
 e.g
-PKG=@0x/contract-wrappers yarn watch
+PKG=@0x/protocol-utils yarn watch
 ```
 
 ### Clean
@@ -129,7 +118,7 @@ yarn clean
 Clean a specific package
 
 ```bash
-PKG=0x.js yarn clean
+PKG=@0x/protocol-utils yarn clean
 ```
 
 ### Rebuild
@@ -143,7 +132,7 @@ yarn rebuild
 To re-build (clean & build) a specific package & it's deps:
 
 ```bash
-PKG=@0x/contract-wrappers yarn rebuild
+PKG=@0x/protocol-utils yarn rebuild
 ```
 
 ### Lint
@@ -157,7 +146,7 @@ yarn lint
 Lint a specific package:
 
 ```bash
-PKG=@0x/contract-wrappers yarn lint
+PKG=@0x/protocol-utils yarn lint
 ```
 
 ### Run Tests
@@ -171,7 +160,7 @@ yarn test
 Run a specific package's test:
 
 ```bash
-PKG=@0x/contract-wrappers yarn test
+PKG=@0x/protocol-utils yarn test
 ```
 
 Run all contracts packages tests:

contracts/README.md

@@ -1,16 +1,3 @@
-#### Deployed Contract Packages
-
-| Contract        | Package                                                             | Version                                                                          | Git Tag                                                                                                                                |
-| --------------- | ------------------------------------------------------------------- | -------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- |
-| AssetProxyOwner | [`@0x/contracts-multisig`](/contracts/multisig)                     | [v1.0.2](https://www.npmjs.com/package/@0x/contracts-multisig/v/1.0.2)           | [@0x/contracts-multisig@1.0.2](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-multisig@1.0.2)                     |
-| ERC20Proxy      | [`@0x/contracts-asset-proxy`](/contracts/asset-proxy)               | [v1.0.1](https://www.npmjs.com/package/@0x/contracts-asset-proxy/v/1.0.1)        | [@0x/contracts-asset-proxy@1.0.1](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-asset-proxy@1.0.1)               |
-| ERC721Proxy     | [`@0x/contracts-asset-proxy`](/contracts/asset-proxy)               | [v1.0.1](https://www.npmjs.com/package/@0x/contracts-asset-proxy/v/1.0.1)        | [@0x/contracts-asset-proxy@1.0.1](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-asset-proxy@1.0.1)               |
-| Exchange        | [`@0x/contracts-exchange`](/contracts/exchange)                     | [v1.0.1](https://www.npmjs.com/package/@0x/contracts-exchange/v/1.0.1)           | [@0x/contracts-exchange@1.0.1](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-exchange@1.0.1)                     |
-| DutchAuction    | [`@0x/contracts-extensions`](/contracts/extensions)                 | [v1.0.2](https://www.npmjs.com/package/@0x/contracts-extensions/v/1.0.2)         | [@0x/contracts-extensions@1.0.2](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-extensions@1.0.2)                 |
-| Forwarder       | [`@0x/contracts-exchange-forwarder`](/contracts/exchange-forwarder) | [v1.0.1](https://www.npmjs.com/package/@0x/contracts-exchange-forwarder/v/1.0.1) | [@0x/contracts-exchange-forwarder@1.0.1](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-exchange-forwarder@1.0.1) |
-| MultiAssetProxy | [`@0x/contracts-asset-proxy`](/contracts/asset-proxy)               | [v1.0.1](https://www.npmjs.com/package/@0x/contracts-asset-proxy/v/1.0.1)        | [@0x/contracts-asset-proxy@1.0.1](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-asset-proxy@1.0.1)               |
-| ZRXToken        | [`@0x/contracts-erc20`](/contracts/erc20)                           | [v1.0.1](https://www.npmjs.com/package/@0x/contracts-erc20/v/1.0.1)              | [@0x/contracts-erc20@1.0.1](https://github.com/0xProject/0x-monorepo/releases/tag/@0x/contracts-erc20@1.0.1)                           |
-
 #### Development
 
 Building solidity files will update the contract artifact in `{package-name}/generated-artifacts/{contract}.json`, but does not automatically update the `contract-artifacts` or `contract-wrappers` packages, which are generated from the artifact JSON. See `contract-artifacts/README.md` for instructions on updating these packages.

contracts/TESTING.md

@@ -1,48 +0,0 @@
-# Contracts testing options
-
-## Revert stack traces
-
-If you want to see helpful stack traces (incl. line number, code snippet) for smart contract reverts, run the tests with:
-
-```
-yarn test:trace
-```
-
-**Note:** This currently slows down the test runs and is therefore not enabled by default.
-
-## Backing Ethereum node
-
-By default, our tests run against an in-process [Ganache](https://github.com/trufflesuite/ganache-core) instance. In order to run the tests against [Geth](https://github.com/ethereum/go-ethereum), first follow the instructions in the README for the devnet package to start the devnet Geth node. Then run:
-
-```bash
-TEST_PROVIDER=geth yarn test
-```
-
-## Code coverage
-
-In order to see the Solidity code coverage output generated by `@0x/sol-coverage`, run:
-
-```
-yarn test:coverage
-```
-
-## Gas profiler
-
-In order to profile the gas costs for a specific smart contract call/transaction, you can run the tests in `profiler` mode.
-
-**Note:** Traces emitted by ganache have incorrect gas costs so we recommend using Geth for profiling.
-
-```
-TEST_PROVIDER=geth yarn test:profiler
-```
-
-You'll see a warning that you need to explicitly enable and disable the profiler before and after the block of code you want to profile.
-
-```typescript
-import { profiler } from './utils/profiler';
-profiler.start();
-// Some call to a smart contract
-profiler.stop();
-```
-
-Without explicitly starting and stopping the profiler, the profiler output will be too busy, and therefore unusable.

contracts/asset-proxy/.npmignore

@@ -1,10 +0,0 @@
-# Blacklist all files
-.*
-*
-# Whitelist lib
-!lib/**/*
-# Whitelist Solidity contracts
-!contracts/src/**/*
-# Blacklist tests in lib
-/lib/test/*
-# Package specific ignore

contracts/asset-proxy/.solhintignore

@@ -1,2 +0,0 @@
-# solhint can't parse `abi.decode` syntax.
-contracts/src/ERC1155Proxy.sol

contracts/asset-proxy/CHANGELOG.json

@@ -1,805 +0,0 @@
-[
-    {
-        "timestamp": 1616005394,
-        "version": "3.7.8",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1614141718,
-        "version": "3.7.7",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1612950500,
-        "version": "3.7.6",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1611648096,
-        "version": "3.7.5",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1610510890,
-        "version": "3.7.4",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1609802516,
-        "version": "3.7.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1608692071,
-        "version": "3.7.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1608245516,
-        "version": "3.7.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "3.7.0",
-        "changes": [
-            {
-                "note": "Fix Bancor support of ETH",
-                "pr": 88
-            }
-        ],
-        "timestamp": 1608105788
-    },
-    {
-        "timestamp": 1607485227,
-        "version": "3.6.9",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1607381756,
-        "version": "3.6.8",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1606961263,
-        "version": "3.6.7",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1605763885,
-        "version": "3.6.6",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1605302002,
-        "version": "3.6.5",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1604385937,
-        "version": "3.6.4",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1604376968,
-        "version": "3.6.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1604355662,
-        "version": "3.6.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1603851023,
-        "version": "3.6.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "3.6.0",
-        "changes": [
-            {
-                "note": "Add `SwerveBridge` and `SnowSwapBridge` (duplicate of `CurveBridge`)",
-                "pr": 2707
-            }
-        ],
-        "timestamp": 1603833198
-    },
-    {
-        "version": "3.5.0",
-        "changes": [
-            {
-                "note": "Update `CurveBridge` to support more varied curves",
-                "pr": 2633
-            },
-            {
-                "note": "Export DexForwarderBridgeContract",
-                "pr": 2656
-            },
-            {
-                "note": "Add BancorBridge and IBancorNetwork, ",
-                "pr": 2650
-            },
-            {
-                "note": "Added `MStableBridge`",
-                "pr": 2662
-            },
-            {
-                "note": "Added `MooniswapBridge`",
-                "pr": 2675
-            },
-            {
-                "note": "Reworked `KyberBridge`",
-                "pr": 2683
-            },
-            {
-                "note": "Added `CreamBridge`",
-                "pr": 2715
-            },
-            {
-                "note": "Added `ShellBridge`",
-                "pr": 2722
-            },
-            {
-                "note": "Added `DODOBridge`",
-                "pr": 2701
-            }
-        ],
-        "timestamp": 1603265572
-    },
-    {
-        "version": "3.4.0",
-        "changes": [
-            {
-                "note": "Fix instability with DFB.",
-                "pr": 2616
-            },
-            {
-                "note": "Add `BalancerBridge`",
-                "pr": 2613
-            }
-        ],
-        "timestamp": 1594788383
-    },
-    {
-        "version": "3.3.0",
-        "changes": [
-            {
-                "note": "Use `LibERC20Token.approveIfBelow()` in DEX bridges for for approvals.",
-                "pr": 2512
-            },
-            {
-                "note": "Emit `ERC20BridgeTransfer` events in bridges.",
-                "pr": 2512
-            },
-            {
-                "note": "Change names of `ERC20BridgeTransfer` args to be less ambiguous.",
-                "pr": 2524
-            },
-            {
-                "note": "Added `MixinGasToken` allowing Gas Tokens to be freed",
-                "pr": 2523
-            },
-            {
-                "note": "Add `DexForwaderBridge` bridge contract.",
-                "pr": 2525
-            },
-            {
-                "note": "Add `UniswapV2Bridge` bridge contract.",
-                "pr": 2590
-            },
-            {
-                "note": "Add Gas Token freeing to `DexForwarderBridge` contract.",
-                "pr": 2536
-            }
-        ],
-        "timestamp": 1592969527
-    },
-    {
-        "timestamp": 1583220306,
-        "version": "3.2.5",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1582837861,
-        "version": "3.2.4",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1582677073,
-        "version": "3.2.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1582623685,
-        "version": "3.2.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1581748629,
-        "version": "3.2.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "3.2.0",
-        "changes": [
-            {
-                "note": "Add more types and functions to `IDydx`",
-                "pr": 2466
-            },
-            {
-                "note": "Rename `DydxBrigeAction.accountId` to `DydxBridgeAction.accountIdx`",
-                "pr": 2466
-            },
-            {
-                "note": "Fix broken tests.",
-                "pr": 2462
-            },
-            {
-                "note": "Remove dependency on `@0x/contracts-dev-utils`",
-                "pr": 2462
-            },
-            {
-                "note": "Add asset data decoding functions",
-                "pr": 2462
-            },
-            {
-                "note": "Add `setOperators()` to `IDydx`",
-                "pr": 2462
-            }
-        ],
-        "timestamp": 1581204851
-    },
-    {
-        "timestamp": 1580988106,
-        "version": "3.1.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1580811564,
-        "version": "3.1.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1579682890,
-        "version": "3.1.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "3.1.0",
-        "changes": [
-            {
-                "note": "Integration tests for DydxBridge with ERC20BridgeProxy.",
-                "pr": 2401
-            },
-            {
-                "note": "Fix `UniswapBridge` token -> token transfer call.",
-                "pr": 2412
-            },
-            {
-                "note": "Fix `KyberBridge` incorrect `minConversionRate` calculation.",
-                "pr": 2412
-            }
-        ],
-        "timestamp": 1578272714
-    },
-    {
-        "timestamp": 1576540892,
-        "version": "3.0.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1575931811,
-        "version": "3.0.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "3.0.0",
-        "changes": [
-            {
-                "note": "Implement `KyberBridge`.",
-                "pr": 2352
-            },
-            {
-                "note": "Drastically reduced bundle size by adding .npmignore, only exporting specific artifacts/wrappers/utils",
-                "pr": 2330
-            },
-            {
-                "note": "ERC20Wrapper and ERC1155ProxyWrapper constructors now require an instance of DevUtilsContract",
-                "pr": 2034
-            },
-            {
-                "note": "Disallow the zero address from being made an authorized address in MixinAuthorizable, and created an archive directory that includes an old version of Ownable",
-                "pr": 2019
-            },
-            {
-                "note": "Remove `LibAssetProxyIds` contract",
-                "pr": 2055
-            },
-            {
-                "note": "Compile and export all contracts, artifacts, and wrappers by default",
-                "pr": 2055
-            },
-            {
-                "note": "Remove unused dependency on IAuthorizable in IAssetProxy",
-                "pr": 1910
-            },
-            {
-                "note": "Add `ERC20BridgeProxy`",
-                "pr": 2220
-            },
-            {
-                "note": "Add `Eth2DaiBridge`",
-                "pr": 2221
-            },
-            {
-                "note": "Add `UniswapBridge`",
-                "pr": 2233
-            },
-            {
-                "note": "Replaced `SafeMath` with `LibSafeMath`",
-                "pr": 2254
-            }
-        ],
-        "timestamp": 1575296764
-    },
-    {
-        "version": "2.3.0-beta.4",
-        "changes": [
-            {
-                "note": "Implement `KyberBridge`.",
-                "pr": 2352
-            },
-            {
-                "note": "Implement `DydxBridge`.",
-                "pr": 2365
-            }
-        ],
-        "timestamp": 1575290197
-    },
-    {
-        "version": "2.3.0-beta.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ],
-        "timestamp": 1574238768
-    },
-    {
-        "version": "2.3.0-beta.2",
-        "changes": [
-            {
-                "note": "Drastically reduced bundle size by adding .npmignore, only exporting specific artifacts/wrappers/utils",
-                "pr": 2330
-            }
-        ],
-        "timestamp": 1574030254
-    },
-    {
-        "version": "2.3.0-beta.1",
-        "changes": [
-            {
-                "note": "ERC20Wrapper and ERC1155ProxyWrapper constructors now require an instance of DevUtilsContract",
-                "pr": 2034
-            }
-        ],
-        "timestamp": 1573159180
-    },
-    {
-        "version": "2.3.0-beta.0",
-        "changes": [
-            {
-                "note": "Disallow the zero address from being made an authorized address in MixinAuthorizable, and created an archive directory that includes an old version of Ownable",
-                "pr": 2019
-            },
-            {
-                "note": "Remove `LibAssetProxyIds` contract",
-                "pr": 2055
-            },
-            {
-                "note": "Compile and export all contracts, artifacts, and wrappers by default",
-                "pr": 2055
-            },
-            {
-                "note": "Remove unused dependency on IAuthorizable in IAssetProxy",
-                "pr": 1910
-            },
-            {
-                "note": "Add `ERC20BridgeProxy`",
-                "pr": 2220
-            },
-            {
-                "note": "Add `Eth2DaiBridge`",
-                "pr": 2221
-            },
-            {
-                "note": "Add `UniswapBridge`",
-                "pr": 2233
-            },
-            {
-                "note": "Replaced `SafeMath` with `LibSafeMath`",
-                "pr": 2254
-            }
-        ],
-        "timestamp": 1570135330
-    },
-    {
-        "timestamp": 1568744790,
-        "version": "2.2.8",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1567521715,
-        "version": "2.2.7",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1566446343,
-        "version": "2.2.6",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1565296576,
-        "version": "2.2.5",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "2.2.4",
-        "changes": [
-            {
-                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
-                "pr": 1995
-            }
-        ],
-        "timestamp": 1564607468
-    },
-    {
-        "timestamp": 1563957393,
-        "version": "2.2.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1563193019,
-        "version": "2.2.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1563047529,
-        "version": "2.2.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "2.2.0",
-        "changes": [
-            {
-                "note": "Add `LibAssetProxyIds` contract",
-                "pr": 1835
-            },
-            {
-                "note": "Updated ERC1155 Asset Proxy. Less optimization. More explicit handling of edge cases.",
-                "pr": 1852
-            },
-            {
-                "note": "Implement StaticCallProxy",
-                "pr": 1863
-            }
-        ],
-        "timestamp": 1563006338
-    },
-    {
-        "timestamp": 1558712885,
-        "version": "2.1.5",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1557961111,
-        "version": "2.1.4",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1557799313,
-        "version": "2.1.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "2.1.2",
-        "changes": [
-            {
-                "note": "Update tests to use contract-built-in `awaitTransactionSuccessAsync`",
-                "pr": 1797
-            },
-            {
-                "note": "Make `ERC721Wrapper.setApprovalForAll()` take an owner address instead of a token ID",
-                "pr": 1819
-            },
-            {
-                "note": "Automatically set unlimited proxy allowances in `ERC721.setBalancesAndAllowancesAsync()`",
-                "pr": 1819
-            },
-            {
-                "note": "Add `setProxyAllowanceForAllAsync()` to `ERC1155ProxyWrapper`.",
-                "pr": 1819
-            }
-        ],
-        "timestamp": 1557507213
-    },
-    {
-        "version": "2.1.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ],
-        "timestamp": 1554997931
-    },
-    {
-        "version": "2.1.0",
-        "changes": [
-            {
-                "note": "Run Web3ProviderEngine without excess block polling",
-                "pr": 1695
-            }
-        ],
-        "timestamp": 1553183790
-    },
-    {
-        "version": "2.0.0",
-        "changes": [
-            {
-                "note": "Do not reexport external dependencies",
-                "pr": 1682
-            },
-            {
-                "note": "Add ERC1155Proxy",
-                "pr": 1661
-            },
-            {
-                "note": "Bumped solidity version to ^0.5.5",
-                "pr": 1701
-            },
-            {
-                "note": "Integration testing for ERC1155Proxy",
-                "pr": 1673
-            }
-        ],
-        "timestamp": 1553091633
-    },
-    {
-        "timestamp": 1551479279,
-        "version": "1.0.9",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1551299797,
-        "version": "1.0.8",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1551220833,
-        "version": "1.0.7",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1551130135,
-        "version": "1.0.6",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1549733923,
-        "version": "1.0.5",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "1.0.4",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ],
-        "timestamp": 1549547375
-    },
-    {
-        "version": "1.0.3",
-        "changes": [
-            {
-                "note": "Fake publish to enable pinning"
-            }
-        ],
-        "timestamp": 1549504360
-    },
-    {
-        "timestamp": 1549452781,
-        "version": "1.0.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1549373905,
-        "version": "1.0.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "version": "1.0.0",
-        "changes": [
-            {
-                "note": "Move all AssetProxy contracts out of contracts-protocol to new package",
-                "pr": 1539
-            }
-        ]
-    }
-]

contracts/asset-proxy/CHANGELOG.md

@@ -1,318 +0,0 @@
-<!--
-changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
-Edit the package's CHANGELOG.json file only.
--->
-
-CHANGELOG
-
-## v3.7.8 - _March 17, 2021_
-
-    * Dependencies updated
-
-## v3.7.7 - _February 24, 2021_
-
-    * Dependencies updated
-
-## v3.7.6 - _February 10, 2021_
-
-    * Dependencies updated
-
-## v3.7.5 - _January 26, 2021_
-
-    * Dependencies updated
-
-## v3.7.4 - _January 13, 2021_
-
-    * Dependencies updated
-
-## v3.7.3 - _January 4, 2021_
-
-    * Dependencies updated
-
-## v3.7.2 - _December 23, 2020_
-
-    * Dependencies updated
-
-## v3.7.1 - _December 17, 2020_
-
-    * Dependencies updated
-
-## v3.7.0 - _December 16, 2020_
-
-    * Fix Bancor support of ETH (#88)
-
-## v3.6.9 - _December 9, 2020_
-
-    * Dependencies updated
-
-## v3.6.8 - _December 7, 2020_
-
-    * Dependencies updated
-
-## v3.6.7 - _December 3, 2020_
-
-    * Dependencies updated
-
-## v3.6.6 - _November 19, 2020_
-
-    * Dependencies updated
-
-## v3.6.5 - _November 13, 2020_
-
-    * Dependencies updated
-
-## v3.6.4 - _November 3, 2020_
-
-    * Dependencies updated
-
-## v3.6.3 - _November 3, 2020_
-
-    * Dependencies updated
-
-## v3.6.2 - _November 2, 2020_
-
-    * Dependencies updated
-
-## v3.6.1 - _October 28, 2020_
-
-    * Dependencies updated
-
-## v3.6.0 - _October 27, 2020_
-
-    * Add `SwerveBridge` and `SnowSwapBridge` (duplicate of `CurveBridge`) (#2707)
-
-## v3.5.0 - _October 21, 2020_
-
-    * Update `CurveBridge` to support more varied curves (#2633)
-    * Export DexForwarderBridgeContract (#2656)
-    * Add BancorBridge and IBancorNetwork,  (#2650)
-    * Added `MStableBridge` (#2662)
-    * Added `MooniswapBridge` (#2675)
-    * Reworked `KyberBridge` (#2683)
-    * Added `CreamBridge` (#2715)
-    * Added `ShellBridge` (#2722)
-    * Added `DODOBridge` (#2701)
-
-## v3.4.0 - _July 15, 2020_
-
-    * Fix instability with DFB. (#2616)
-    * Add `BalancerBridge` (#2613)
-
-## v3.3.0 - _June 24, 2020_
-
-    * Use `LibERC20Token.approveIfBelow()` in DEX bridges for for approvals. (#2512)
-    * Emit `ERC20BridgeTransfer` events in bridges. (#2512)
-    * Change names of `ERC20BridgeTransfer` args to be less ambiguous. (#2524)
-    * Added `MixinGasToken` allowing Gas Tokens to be freed (#2523)
-    * Add `DexForwaderBridge` bridge contract. (#2525)
-    * Add `UniswapV2Bridge` bridge contract. (#2590)
-    * Add Gas Token freeing to `DexForwarderBridge` contract. (#2536)
-
-## v3.2.5 - _March 3, 2020_
-
-    * Dependencies updated
-
-## v3.2.4 - _February 27, 2020_
-
-    * Dependencies updated
-
-## v3.2.3 - _February 26, 2020_
-
-    * Dependencies updated
-
-## v3.2.2 - _February 25, 2020_
-
-    * Dependencies updated
-
-## v3.2.1 - _February 15, 2020_
-
-    * Dependencies updated
-
-## v3.2.0 - _February 8, 2020_
-
-    * Add more types and functions to `IDydx` (#2466)
-    * Rename `DydxBrigeAction.accountId` to `DydxBridgeAction.accountIdx` (#2466)
-    * Fix broken tests. (#2462)
-    * Remove dependency on `@0x/contracts-dev-utils` (#2462)
-    * Add asset data decoding functions (#2462)
-    * Add `setOperators()` to `IDydx` (#2462)
-
-## v3.1.3 - _February 6, 2020_
-
-    * Dependencies updated
-
-## v3.1.2 - _February 4, 2020_
-
-    * Dependencies updated
-
-## v3.1.1 - _January 22, 2020_
-
-    * Dependencies updated
-
-## v3.1.0 - _January 6, 2020_
-
-    * Integration tests for DydxBridge with ERC20BridgeProxy. (#2401)
-    * Fix `UniswapBridge` token -> token transfer call. (#2412)
-    * Fix `KyberBridge` incorrect `minConversionRate` calculation. (#2412)
-
-## v3.0.2 - _December 17, 2019_
-
-    * Dependencies updated
-
-## v3.0.1 - _December 9, 2019_
-
-    * Dependencies updated
-
-## v3.0.0 - _December 2, 2019_
-
-    * Implement `KyberBridge`. (#2352)
-    * Drastically reduced bundle size by adding .npmignore, only exporting specific artifacts/wrappers/utils (#2330)
-    * ERC20Wrapper and ERC1155ProxyWrapper constructors now require an instance of DevUtilsContract (#2034)
-    * Disallow the zero address from being made an authorized address in MixinAuthorizable, and created an archive directory that includes an old version of Ownable (#2019)
-    * Remove `LibAssetProxyIds` contract (#2055)
-    * Compile and export all contracts, artifacts, and wrappers by default (#2055)
-    * Remove unused dependency on IAuthorizable in IAssetProxy (#1910)
-    * Add `ERC20BridgeProxy` (#2220)
-    * Add `Eth2DaiBridge` (#2221)
-    * Add `UniswapBridge` (#2233)
-    * Replaced `SafeMath` with `LibSafeMath` (#2254)
-
-## v2.3.0-beta.4 - _December 2, 2019_
-
-    * Implement `KyberBridge`. (#2352)
-    * Implement `DydxBridge`. (#2365)
-
-## v2.3.0-beta.3 - _November 20, 2019_
-
-    * Dependencies updated
-
-## v2.3.0-beta.2 - _November 17, 2019_
-
-    * Drastically reduced bundle size by adding .npmignore, only exporting specific artifacts/wrappers/utils (#2330)
-
-## v2.3.0-beta.1 - _November 7, 2019_
-
-    * ERC20Wrapper and ERC1155ProxyWrapper constructors now require an instance of DevUtilsContract (#2034)
-
-## v2.3.0-beta.0 - _October 3, 2019_
-
-    * Disallow the zero address from being made an authorized address in MixinAuthorizable, and created an archive directory that includes an old version of Ownable (#2019)
-    * Remove `LibAssetProxyIds` contract (#2055)
-    * Compile and export all contracts, artifacts, and wrappers by default (#2055)
-    * Remove unused dependency on IAuthorizable in IAssetProxy (#1910)
-    * Add `ERC20BridgeProxy` (#2220)
-    * Add `Eth2DaiBridge` (#2221)
-    * Add `UniswapBridge` (#2233)
-    * Replaced `SafeMath` with `LibSafeMath` (#2254)
-
-## v2.2.8 - _September 17, 2019_
-
-    * Dependencies updated
-
-## v2.2.7 - _September 3, 2019_
-
-    * Dependencies updated
-
-## v2.2.6 - _August 22, 2019_
-
-    * Dependencies updated
-
-## v2.2.5 - _August 8, 2019_
-
-    * Dependencies updated
-
-## v2.2.4 - _July 31, 2019_
-
-    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
-
-## v2.2.3 - _July 24, 2019_
-
-    * Dependencies updated
-
-## v2.2.2 - _July 15, 2019_
-
-    * Dependencies updated
-
-## v2.2.1 - _July 13, 2019_
-
-    * Dependencies updated
-
-## v2.2.0 - _July 13, 2019_
-
-    * Add `LibAssetProxyIds` contract (#1835)
-    * Updated ERC1155 Asset Proxy. Less optimization. More explicit handling of edge cases. (#1852)
-    * Implement StaticCallProxy (#1863)
-
-## v2.1.5 - _May 24, 2019_
-
-    * Dependencies updated
-
-## v2.1.4 - _May 15, 2019_
-
-    * Dependencies updated
-
-## v2.1.3 - _May 14, 2019_
-
-    * Dependencies updated
-
-## v2.1.2 - _May 10, 2019_
-
-    * Update tests to use contract-built-in `awaitTransactionSuccessAsync` (#1797)
-    * Make `ERC721Wrapper.setApprovalForAll()` take an owner address instead of a token ID (#1819)
-    * Automatically set unlimited proxy allowances in `ERC721.setBalancesAndAllowancesAsync()` (#1819)
-    * Add `setProxyAllowanceForAllAsync()` to `ERC1155ProxyWrapper`. (#1819)
-
-## v2.1.1 - _April 11, 2019_
-
-    * Dependencies updated
-
-## v2.1.0 - _March 21, 2019_
-
-    * Run Web3ProviderEngine without excess block polling (#1695)
-
-## v2.0.0 - _March 20, 2019_
-
-    * Do not reexport external dependencies (#1682)
-    * Add ERC1155Proxy (#1661)
-    * Bumped solidity version to ^0.5.5 (#1701)
-    * Integration testing for ERC1155Proxy (#1673)
-
-## v1.0.9 - _March 1, 2019_
-
-    * Dependencies updated
-
-## v1.0.8 - _February 27, 2019_
-
-    * Dependencies updated
-
-## v1.0.7 - _February 26, 2019_
-
-    * Dependencies updated
-
-## v1.0.6 - _February 25, 2019_
-
-    * Dependencies updated
-
-## v1.0.5 - _February 9, 2019_
-
-    * Dependencies updated
-
-## v1.0.4 - _February 7, 2019_
-
-    * Dependencies updated
-
-## v1.0.3 - _February 7, 2019_
-
-    * Fake publish to enable pinning
-
-## v1.0.2 - _February 6, 2019_
-
-    * Dependencies updated
-
-## v1.0.1 - _February 5, 2019_
-
-    * Dependencies updated
-
-## v1.0.0 - _Invalid date_
-
-    * Move all AssetProxy contracts out of contracts-protocol to new package (#1539)

contracts/asset-proxy/DEPLOYS.json

@@ -1,47 +0,0 @@
-[
-    {
-        "name": "MultiAssetProxy",
-        "version": "1.0.0",
-        "changes": [
-            {
-                "note": "Add MultiAssetProxy implementation",
-                "pr": 1224,
-                "networks": {
-                    "3": "0xab8fbd189c569ccdee3a4d929bb7f557be4028f6",
-                    "4": "0xb34cde0ad3a83d04abebc0b66e75196f22216621",
-                    "42": "0xf6313a772c222f51c28f2304c0703b8cf5428fd8"
-                }
-            }
-        ]
-    },
-    {
-        "name": "ERC20Proxy",
-        "version": "1.0.0",
-        "changes": [
-            {
-                "note": "protocol v2 deploy",
-                "networks": {
-                    "1": "0x2240dab907db71e64d3e0dba4800c83b5c502d4e",
-                    "3": "0xb1408f4c245a23c31b98d2c626777d4c0d766caa",
-                    "4": "0x3e809c563c15a295e832e37053798ddc8d6c8dab",
-                    "42": "0xf1ec01d6236d3cd881a0bf0130ea25fe4234003e"
-                }
-            }
-        ]
-    },
-    {
-        "name": "ERC721Proxy",
-        "version": "1.0.0",
-        "changes": [
-            {
-                "note": "protocol v2 deploy",
-                "networks": {
-                    "1": "0x208e41fb445f1bb1b6780d58356e81405f3e6127",
-                    "3": "0xe654aac058bfbf9f83fcaee7793311dd82f6ddb4",
-                    "4": "0x8e1ff02637cb5e39f2fa36c14706aa348b065b09",
-                    "42": "0x2a9127c745688a165106c11cd4d647d2220af821"
-                }
-            }
-        ]
-    }
-]

contracts/asset-proxy/README.md

@@ -1,73 +0,0 @@
-## AssetProxy
-
-This package contains the implementations of all of the [`AssetProxy`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxy) contracts available within the 0x protocol. These contracts are responsible for decoding the `assetData` sent to them and performing the actual transfer of assets. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
-
-## Installation
-
-**Install**
-
-```bash
-npm install @0x/contracts-asset-proxy --save
-```
-
-## Bug bounty
-
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
-
-## Contributing
-
-We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
-
-For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
-
-Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
-
-### Install Dependencies
-
-If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
-
-```bash
-yarn config set workspaces-experimental true
-```
-
-Then install dependencies
-
-```bash
-yarn install
-```
-
-### Build
-
-To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
-
-```bash
-PKG=@0x/contracts-asset-proxy yarn build
-```
-
-Or continuously rebuild on change:
-
-```bash
-PKG=@0x/contracts-asset-proxy yarn watch
-```
-
-### Clean
-
-```bash
-yarn clean
-```
-
-### Lint
-
-```bash
-yarn lint
-```
-
-### Run Tests
-
-```bash
-yarn test
-```
-
-#### Testing options
-
-Contracts testing options like coverage, profiling, revert traces or backing node choosing - are described [here](../TESTING.md).

contracts/asset-proxy/compiler.json

@@ -1,27 +0,0 @@
-{
-    "artifactsDir": "./test/generated-artifacts",
-    "contractsDir": "./contracts",
-    "useDockerisedSolc": false,
-    "isOfflineMode": false,
-    "shouldSaveStandardInput": true,
-    "compilerSettings": {
-        "evmVersion": "istanbul",
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000,
-            "details": { "yul": true, "deduplicate": true, "cse": true, "constantOptimizer": true }
-        },
-        "outputSelection": {
-            "*": {
-                "*": [
-                    "abi",
-                    "devdoc",
-                    "evm.bytecode.object",
-                    "evm.bytecode.sourceMap",
-                    "evm.deployedBytecode.object",
-                    "evm.deployedBytecode.sourceMap"
-                ]
-            }
-        }
-    }
-}

contracts/asset-proxy/contracts/archive/MixinAssetProxyDispatcher.sol

@@ -1,172 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../archive/Ownable.sol";
-import "../src/interfaces/IAssetProxy.sol";
-import "../src/interfaces/IAssetProxyDispatcher.sol";
-
-
-contract MixinAssetProxyDispatcher is
-    Ownable,
-    IAssetProxyDispatcher
-{
-    // Mapping from Asset Proxy Id's to their respective Asset Proxy
-    mapping (bytes4 => address) public assetProxies;
-
-    /// @dev Registers an asset proxy to its asset proxy id.
-    ///      Once an asset proxy is registered, it cannot be unregistered.
-    /// @param assetProxy Address of new asset proxy to register.
-    function registerAssetProxy(address assetProxy)
-        external
-        onlyOwner
-    {
-        // Ensure that no asset proxy exists with current id.
-        bytes4 assetProxyId = IAssetProxy(assetProxy).getProxyId();
-        address currentAssetProxy = assetProxies[assetProxyId];
-        require(
-            currentAssetProxy == address(0),
-            "ASSET_PROXY_ALREADY_EXISTS"
-        );
-
-        // Add asset proxy and log registration.
-        assetProxies[assetProxyId] = assetProxy;
-        emit AssetProxyRegistered(
-            assetProxyId,
-            assetProxy
-        );
-    }
-
-    /// @dev Gets an asset proxy.
-    /// @param assetProxyId Id of the asset proxy.
-    /// @return The asset proxy registered to assetProxyId. Returns 0x0 if no proxy is registered.
-    function getAssetProxy(bytes4 assetProxyId)
-        external
-        view
-        returns (address)
-    {
-        return assetProxies[assetProxyId];
-    }
-
-    /// @dev Forwards arguments to assetProxy and calls `transferFrom`. Either succeeds or throws.
-    /// @param assetData Byte array encoded for the asset.
-    /// @param from Address to transfer token from.
-    /// @param to Address to transfer token to.
-    /// @param amount Amount of token to transfer.
-    function _dispatchTransferFrom(
-        bytes memory assetData,
-        address from,
-        address to,
-        uint256 amount
-    )
-        internal
-    {
-        // Do nothing if no amount should be transferred.
-        if (amount > 0 && from != to) {
-            // Ensure assetData length is valid
-            require(
-                assetData.length > 3,
-                "LENGTH_GREATER_THAN_3_REQUIRED"
-            );
-
-            // Lookup assetProxy. We do not use `LibBytes.readBytes4` for gas efficiency reasons.
-            bytes4 assetProxyId;
-            assembly {
-                assetProxyId := and(mload(
-                    add(assetData, 32)),
-                    0xFFFFFFFF00000000000000000000000000000000000000000000000000000000
-                )
-            }
-            address assetProxy = assetProxies[assetProxyId];
-
-            // Ensure that assetProxy exists
-            require(
-                assetProxy != address(0),
-                "ASSET_PROXY_DOES_NOT_EXIST"
-            );
-
-            // We construct calldata for the `assetProxy.transferFrom` ABI.
-            // The layout of this calldata is in the table below.
-            //
-            // | Area     | Offset | Length  | Contents                                    |
-            // | -------- |--------|---------|-------------------------------------------- |
-            // | Header   | 0      | 4       | function selector                           |
-            // | Params   |        | 4 * 32  | function parameters:                        |
-            // |          | 4      |         |   1. offset to assetData (*)                |
-            // |          | 36     |         |   2. from                                   |
-            // |          | 68     |         |   3. to                                     |
-            // |          | 100    |         |   4. amount                                 |
-            // | Data     |        |         | assetData:                                  |
-            // |          | 132    | 32      | assetData Length                            |
-            // |          | 164    | **      | assetData Contents                          |
-
-            assembly {
-                /////// Setup State ///////
-                // `cdStart` is the start of the calldata for `assetProxy.transferFrom` (equal to free memory ptr).
-                let cdStart := mload(64)
-                // `dataAreaLength` is the total number of words needed to store `assetData`
-                //  As-per the ABI spec, this value is padded up to the nearest multiple of 32,
-                //  and includes 32-bytes for length.
-                let dataAreaLength := and(add(mload(assetData), 63), 0xFFFFFFFFFFFE0)
-                // `cdEnd` is the end of the calldata for `assetProxy.transferFrom`.
-                let cdEnd := add(cdStart, add(132, dataAreaLength))
-
-
-                /////// Setup Header Area ///////
-                // This area holds the 4-byte `transferFromSelector`.
-                // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4
-                mstore(cdStart, 0xa85e59e400000000000000000000000000000000000000000000000000000000)
-
-                /////// Setup Params Area ///////
-                // Each parameter is padded to 32-bytes. The entire Params Area is 128 bytes.
-                // Notes:
-                //   1. The offset to `assetData` is the length of the Params Area (128 bytes).
-                //   2. A 20-byte mask is applied to addresses to zero-out the unused bytes.
-                mstore(add(cdStart, 4), 128)
-                mstore(add(cdStart, 36), and(from, 0xffffffffffffffffffffffffffffffffffffffff))
-                mstore(add(cdStart, 68), and(to, 0xffffffffffffffffffffffffffffffffffffffff))
-                mstore(add(cdStart, 100), amount)
-
-                /////// Setup Data Area ///////
-                // This area holds `assetData`.
-                let dataArea := add(cdStart, 132)
-                // solhint-disable-next-line no-empty-blocks
-                for {} lt(dataArea, cdEnd) {} {
-                    mstore(dataArea, mload(assetData))
-                    dataArea := add(dataArea, 32)
-                    assetData := add(assetData, 32)
-                }
-
-                /////// Call `assetProxy.transferFrom` using the constructed calldata ///////
-                let success := call(
-                    gas,                    // forward all gas
-                    assetProxy,             // call address of asset proxy
-                    0,                      // don't send any ETH
-                    cdStart,                // pointer to start of input
-                    sub(cdEnd, cdStart),    // length of input
-                    cdStart,                // write output over input
-                    512                     // reserve 512 bytes for output
-                )
-                if iszero(success) {
-                    revert(cdStart, returndatasize())
-                }
-            }
-        }
-    }
-}

contracts/asset-proxy/contracts/archive/MixinAuthorizable.sol

@@ -1,117 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../archive/Ownable.sol";
-import "../src/interfaces/IAuthorizable.sol";
-
-
-contract MixinAuthorizable is
-    Ownable,
-    IAuthorizable
-{
-    /// @dev Only authorized addresses can invoke functions with this modifier.
-    modifier onlyAuthorized {
-        require(
-            authorized[msg.sender],
-            "SENDER_NOT_AUTHORIZED"
-        );
-        _;
-    }
-
-    mapping (address => bool) public authorized;
-    address[] public authorities;
-
-    /// @dev Authorizes an address.
-    /// @param target Address to authorize.
-    function addAuthorizedAddress(address target)
-        external
-        onlyOwner
-    {
-        require(
-            !authorized[target],
-            "TARGET_ALREADY_AUTHORIZED"
-        );
-
-        authorized[target] = true;
-        authorities.push(target);
-        emit AuthorizedAddressAdded(target, msg.sender);
-    }
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    function removeAuthorizedAddress(address target)
-        external
-        onlyOwner
-    {
-        require(
-            authorized[target],
-            "TARGET_NOT_AUTHORIZED"
-        );
-
-        delete authorized[target];
-        for (uint256 i = 0; i < authorities.length; i++) {
-            if (authorities[i] == target) {
-                authorities[i] = authorities[authorities.length - 1];
-                authorities.length -= 1;
-                break;
-            }
-        }
-        emit AuthorizedAddressRemoved(target, msg.sender);
-    }
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    /// @param index Index of target in authorities array.
-    function removeAuthorizedAddressAtIndex(
-        address target,
-        uint256 index
-    )
-        external
-        onlyOwner
-    {
-        require(
-            authorized[target],
-            "TARGET_NOT_AUTHORIZED"
-        );
-        require(
-            index < authorities.length,
-            "INDEX_OUT_OF_BOUNDS"
-        );
-        require(
-            authorities[index] == target,
-            "AUTHORIZED_ADDRESS_MISMATCH"
-        );
-
-        delete authorized[target];
-        authorities[index] = authorities[authorities.length - 1];
-        authorities.length -= 1;
-        emit AuthorizedAddressRemoved(target, msg.sender);
-    }
-
-    /// @dev Gets all authorized addresses.
-    /// @return Array of authorized addresses.
-    function getAuthorizedAddresses()
-        external
-        view
-        returns (address[] memory)
-    {
-        return authorities;
-    }
-}

contracts/asset-proxy/contracts/archive/Ownable.sol

@@ -1,33 +0,0 @@
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-utils/contracts/src/interfaces/IOwnable.sol";
-
-
-contract Ownable is
-    IOwnable
-{
-    address public owner;
-
-    constructor ()
-        public
-    {
-        owner = msg.sender;
-    }
-
-    modifier onlyOwner() {
-        require(
-            msg.sender == owner,
-            "ONLY_CONTRACT_OWNER"
-        );
-        _;
-    }
-
-    function transferOwnership(address newOwner)
-        public
-        onlyOwner
-    {
-        if (newOwner != address(0)) {
-            owner = newOwner;
-        }
-    }
-}

contracts/asset-proxy/contracts/src/ERC1155Proxy.sol

@@ -1,97 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "@0x/contracts-erc1155/contracts/src/interfaces/IERC1155.sol";
-import "../archive/MixinAuthorizable.sol";
-import "./interfaces/IAssetProxy.sol";
-
-
-contract ERC1155Proxy is
-    MixinAuthorizable,
-    IAssetProxy
-{
-    using LibBytes for bytes;
-    using LibSafeMath for uint256;
-
-    // Id of this proxy.
-    bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC1155Assets(address,uint256[],uint256[],bytes)"));
-
-    /// @dev Transfers batch of ERC1155 assets. Either succeeds or throws.
-    /// @param assetData Byte array encoded with ERC1155 token address, array of ids, array of values, and callback data.
-    /// @param from Address to transfer assets from.
-    /// @param to Address to transfer assets to.
-    /// @param amount Amount that will be multiplied with each element of `assetData.values` to scale the
-    ///        values that will be transferred.
-    function transferFrom(
-        bytes calldata assetData,
-        address from,
-        address to,
-        uint256 amount
-    )
-        external
-        onlyAuthorized
-    {
-        // Decode params from `assetData`
-        // solhint-disable indent
-        (
-            address erc1155TokenAddress,
-            uint256[] memory ids,
-            uint256[] memory values,
-            bytes memory data
-        ) = abi.decode(
-            assetData.sliceDestructive(4, assetData.length),
-            (address, uint256[], uint256[], bytes)
-        );
-        // solhint-enable indent
-
-        // Scale values up by `amount`
-        uint256 length = values.length;
-        uint256[] memory scaledValues = new uint256[](length);
-        for (uint256 i = 0; i != length; i++) {
-            // We write the scaled values to an unused location in memory in order
-            // to avoid copying over `ids` or `data`. This is possible if they are
-            // identical to `values` and the offsets for each are pointing to the
-            // same location in the ABI encoded calldata.
-            scaledValues[i] = values[i].safeMul(amount);
-        }
-
-        // Execute `safeBatchTransferFrom` call
-        // Either succeeds or throws
-        IERC1155(erc1155TokenAddress).safeBatchTransferFrom(
-            from,
-            to,
-            ids,
-            scaledValues,
-            data
-        );
-    }
-
-    /// @dev Gets the proxy id associated with the proxy address.
-    /// @return Proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4)
-    {
-        return PROXY_ID;
-    }
-}

contracts/asset-proxy/contracts/src/ERC20BridgeProxy.sol

@@ -1,126 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "@0x/contracts-utils/contracts/src/Authorizable.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "./interfaces/IAssetProxy.sol";
-import "./interfaces/IERC20Bridge.sol";
-
-
-contract ERC20BridgeProxy is
-    IAssetProxy,
-    Authorizable
-{
-    using LibBytes for bytes;
-    using LibSafeMath for uint256;
-
-    // @dev Id of this proxy. Also the result of a successful bridge call.
-    //      bytes4(keccak256("ERC20Bridge(address,address,bytes)"))
-    bytes4 constant private PROXY_ID = 0xdc1600f3;
-
-    /// @dev Calls a bridge contract to transfer `amount` of ERC20 from `from`
-    ///      to `to`. Asserts that the balance of `to` has increased by `amount`.
-    /// @param assetData Abi-encoded data for this asset proxy encoded as:
-    ///          abi.encodeWithSelector(
-    ///             bytes4 PROXY_ID,
-    ///             address tokenAddress,
-    ///             address bridgeAddress,
-    ///             bytes bridgeData
-    ///          )
-    /// @param from Address to transfer asset from.
-    /// @param to Address to transfer asset to.
-    /// @param amount Amount of asset to transfer.
-    function transferFrom(
-        bytes calldata assetData,
-        address from,
-        address to,
-        uint256 amount
-    )
-        external
-        onlyAuthorized
-    {
-        // Extract asset data fields.
-        (
-            address tokenAddress,
-            address bridgeAddress,
-            bytes memory bridgeData
-        ) = abi.decode(
-            assetData.sliceDestructive(4, assetData.length),
-            (address, address, bytes)
-        );
-
-        // Remember the balance of `to` before calling the bridge.
-        uint256 balanceBefore = balanceOf(tokenAddress, to);
-        // Call the bridge, who should transfer `amount` of `tokenAddress` to
-        // `to`.
-        bytes4 success = IERC20Bridge(bridgeAddress).bridgeTransferFrom(
-            tokenAddress,
-            from,
-            to,
-            amount,
-            bridgeData
-        );
-        // Bridge must return the proxy ID to indicate success.
-        require(success == PROXY_ID, "BRIDGE_FAILED");
-        // Ensure that the balance of `to` has increased by at least `amount`.
-        require(
-            balanceBefore.safeAdd(amount) <= balanceOf(tokenAddress, to),
-            "BRIDGE_UNDERPAY"
-        );
-    }
-
-    /// @dev Gets the proxy id associated with this asset proxy.
-    /// @return proxyId The proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4 proxyId)
-    {
-        return PROXY_ID;
-    }
-
-    /// @dev Retrieves the balance of `owner` for this asset.
-    /// @return balance The balance of the ERC20 token being transferred by this
-    ///         asset proxy.
-    function balanceOf(bytes calldata assetData, address owner)
-        external
-        view
-        returns (uint256 balance)
-    {
-        (address tokenAddress) = abi.decode(
-            assetData.sliceDestructive(4, assetData.length),
-            (address)
-        );
-        return balanceOf(tokenAddress, owner);
-    }
-
-    /// @dev Retrieves the balance of `owner` given an ERC20 address.
-    /// @return balance The balance of the ERC20 token for `owner`.
-    function balanceOf(address tokenAddress, address owner)
-        private
-        view
-        returns (uint256 balance)
-    {
-        return IERC20Token(tokenAddress).balanceOf(owner);
-    }
-}

contracts/asset-proxy/contracts/src/ERC20Proxy.sol

@@ -1,184 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../archive/MixinAuthorizable.sol";
-
-
-contract ERC20Proxy is
-    MixinAuthorizable
-{
-    // Id of this proxy.
-    bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC20Token(address)"));
-
-    // solhint-disable-next-line payable-fallback
-    function ()
-        external
-    {
-        assembly {
-            // The first 4 bytes of calldata holds the function selector
-            let selector := and(calldataload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000)
-
-            // `transferFrom` will be called with the following parameters:
-            // assetData Encoded byte array.
-            // from Address to transfer asset from.
-            // to Address to transfer asset to.
-            // amount Amount of asset to transfer.
-            // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4
-            if eq(selector, 0xa85e59e400000000000000000000000000000000000000000000000000000000) {
-
-                // To lookup a value in a mapping, we load from the storage location keccak256(k, p),
-                // where k is the key left padded to 32 bytes and p is the storage slot
-                let start := mload(64)
-                mstore(start, and(caller, 0xffffffffffffffffffffffffffffffffffffffff))
-                mstore(add(start, 32), authorized_slot)
-
-                // Revert if authorized[msg.sender] == false
-                if iszero(sload(keccak256(start, 64))) {
-                    // Revert with `Error("SENDER_NOT_AUTHORIZED")`
-                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                    mstore(64, 0x0000001553454e4445525f4e4f545f415554484f52495a454400000000000000)
-                    mstore(96, 0)
-                    revert(0, 100)
-                }
-
-                // `transferFrom`.
-                // The function is marked `external`, so no abi decodeding is done for
-                // us. Instead, we expect the `calldata` memory to contain the
-                // following:
-                //
-                // | Area     | Offset | Length  | Contents                            |
-                // |----------|--------|---------|-------------------------------------|
-                // | Header   | 0      | 4       | function selector                   |
-                // | Params   |        | 4 * 32  | function parameters:                |
-                // |          | 4      |         |   1. offset to assetData (*)        |
-                // |          | 36     |         |   2. from                           |
-                // |          | 68     |         |   3. to                             |
-                // |          | 100    |         |   4. amount                         |
-                // | Data     |        |         | assetData:                          |
-                // |          | 132    | 32      | assetData Length                    |
-                // |          | 164    | **      | assetData Contents                  |
-                //
-                // (*): offset is computed from start of function parameters, so offset
-                //      by an additional 4 bytes in the calldata.
-                //
-                // (**): see table below to compute length of assetData Contents
-                //
-                // WARNING: The ABIv2 specification allows additional padding between
-                //          the Params and Data section. This will result in a larger
-                //          offset to assetData.
-
-                // Asset data itself is encoded as follows:
-                //
-                // | Area     | Offset | Length  | Contents                            |
-                // |----------|--------|---------|-------------------------------------|
-                // | Header   | 0      | 4       | function selector                   |
-                // | Params   |        | 1 * 32  | function parameters:                |
-                // |          | 4      | 12 + 20 |   1. token address                  |
-
-                // We construct calldata for the `token.transferFrom` ABI.
-                // The layout of this calldata is in the table below.
-                //
-                // | Area     | Offset | Length  | Contents                            |
-                // |----------|--------|---------|-------------------------------------|
-                // | Header   | 0      | 4       | function selector                   |
-                // | Params   |        | 3 * 32  | function parameters:                |
-                // |          | 4      |         |   1. from                           |
-                // |          | 36     |         |   2. to                             |
-                // |          | 68     |         |   3. amount                         |
-
-                /////// Read token address from calldata ///////
-                // * The token address is stored in `assetData`.
-                //
-                // * The "offset to assetData" is stored at offset 4 in the calldata (table 1).
-                //   [assetDataOffsetFromParams = calldataload(4)]
-                //
-                // * Notes that the "offset to assetData" is relative to the "Params" area of calldata;
-                //   add 4 bytes to account for the length of the "Header" area (table 1).
-                //   [assetDataOffsetFromHeader = assetDataOffsetFromParams + 4]
-                //
-                // * The "token address" is offset 32+4=36 bytes into "assetData" (tables 1 & 2).
-                //   [tokenOffset = assetDataOffsetFromHeader + 36 = calldataload(4) + 4 + 36]
-                let token := calldataload(add(calldataload(4), 40))
-
-                /////// Setup Header Area ///////
-                // This area holds the 4-byte `transferFrom` selector.
-                // Any trailing data in transferFromSelector will be
-                // overwritten in the next `mstore` call.
-                mstore(0, 0x23b872dd00000000000000000000000000000000000000000000000000000000)
-
-                /////// Setup Params Area ///////
-                // We copy the fields `from`, `to` and `amount` in bulk
-                // from our own calldata to the new calldata.
-                calldatacopy(4, 36, 96)
-
-                /////// Call `token.transferFrom` using the calldata ///////
-                let success := call(
-                    gas,            // forward all gas
-                    token,          // call address of token contract
-                    0,              // don't send any ETH
-                    0,              // pointer to start of input
-                    100,            // length of input
-                    0,              // write output over input
-                    32              // output size should be 32 bytes
-                )
-
-                /////// Check return data. ///////
-                // If there is no return data, we assume the token incorrectly
-                // does not return a bool. In this case we expect it to revert
-                // on failure, which was handled above.
-                // If the token does return data, we require that it is a single
-                // nonzero 32 bytes value.
-                // So the transfer succeeded if the call succeeded and either
-                // returned nothing, or returned a non-zero 32 byte value.
-                success := and(success, or(
-                    iszero(returndatasize),
-                    and(
-                        eq(returndatasize, 32),
-                        gt(mload(0), 0)
-                    )
-                ))
-                if success {
-                    return(0, 0)
-                }
-
-                // Revert with `Error("TRANSFER_FAILED")`
-                mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                mstore(64, 0x0000000f5452414e534645525f4641494c454400000000000000000000000000)
-                mstore(96, 0)
-                revert(0, 100)
-            }
-
-            // Revert if undefined function is called
-            revert(0, 0)
-        }
-    }
-
-    /// @dev Gets the proxy id associated with the proxy address.
-    /// @return Proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4)
-    {
-        return PROXY_ID;
-    }
-}

contracts/asset-proxy/contracts/src/ERC721Proxy.sol

@@ -1,171 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../archive/MixinAuthorizable.sol";
-
-
-contract ERC721Proxy is
-    MixinAuthorizable
-{
-    // Id of this proxy.
-    bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC721Token(address,uint256)"));
-
-    // solhint-disable-next-line payable-fallback
-    function ()
-        external
-    {
-        assembly {
-            // The first 4 bytes of calldata holds the function selector
-            let selector := and(calldataload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000)
-
-            // `transferFrom` will be called with the following parameters:
-            // assetData Encoded byte array.
-            // from Address to transfer asset from.
-            // to Address to transfer asset to.
-            // amount Amount of asset to transfer.
-            // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4
-            if eq(selector, 0xa85e59e400000000000000000000000000000000000000000000000000000000) {
-
-                // To lookup a value in a mapping, we load from the storage location keccak256(k, p),
-                // where k is the key left padded to 32 bytes and p is the storage slot
-                let start := mload(64)
-                mstore(start, and(caller, 0xffffffffffffffffffffffffffffffffffffffff))
-                mstore(add(start, 32), authorized_slot)
-
-                // Revert if authorized[msg.sender] == false
-                if iszero(sload(keccak256(start, 64))) {
-                    // Revert with `Error("SENDER_NOT_AUTHORIZED")`
-                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                    mstore(64, 0x0000001553454e4445525f4e4f545f415554484f52495a454400000000000000)
-                    mstore(96, 0)
-                    revert(0, 100)
-                }
-
-                // `transferFrom`.
-                // The function is marked `external`, so no abi decodeding is done for
-                // us. Instead, we expect the `calldata` memory to contain the
-                // following:
-                //
-                // | Area     | Offset | Length  | Contents                            |
-                // |----------|--------|---------|-------------------------------------|
-                // | Header   | 0      | 4       | function selector                   |
-                // | Params   |        | 4 * 32  | function parameters:                |
-                // |          | 4      |         |   1. offset to assetData (*)        |
-                // |          | 36     |         |   2. from                           |
-                // |          | 68     |         |   3. to                             |
-                // |          | 100    |         |   4. amount                         |
-                // | Data     |        |         | assetData:                          |
-                // |          | 132    | 32      | assetData Length                    |
-                // |          | 164    | **      | assetData Contents                  |
-                //
-                // (*): offset is computed from start of function parameters, so offset
-                //      by an additional 4 bytes in the calldata.
-                //
-                // (**): see table below to compute length of assetData Contents
-                //
-                // WARNING: The ABIv2 specification allows additional padding between
-                //          the Params and Data section. This will result in a larger
-                //          offset to assetData.
-
-                // Asset data itself is encoded as follows:
-                //
-                // | Area     | Offset | Length  | Contents                            |
-                // |----------|--------|---------|-------------------------------------|
-                // | Header   | 0      | 4       | function selector                   |
-                // | Params   |        | 2 * 32  | function parameters:                |
-                // |          | 4      | 12 + 20 |   1. token address                  |
-                // |          | 36     |         |   2. tokenId                        |
-
-                // We construct calldata for the `token.transferFrom` ABI.
-                // The layout of this calldata is in the table below.
-                //
-                // | Area     | Offset | Length  | Contents                            |
-                // |----------|--------|---------|-------------------------------------|
-                // | Header   | 0      | 4       | function selector                   |
-                // | Params   |        | 3 * 32  | function parameters:                |
-                // |          | 4      |         |   1. from                           |
-                // |          | 36     |         |   2. to                             |
-                // |          | 68     |         |   3. tokenId                        |
-
-                // There exists only 1 of each token.
-                // require(amount == 1, "INVALID_AMOUNT")
-                if sub(calldataload(100), 1) {
-                    // Revert with `Error("INVALID_AMOUNT")`
-                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                    mstore(64, 0x0000000e494e56414c49445f414d4f554e540000000000000000000000000000)
-                    mstore(96, 0)
-                    revert(0, 100)
-                }
-
-                /////// Setup Header Area ///////
-                // This area holds the 4-byte `transferFrom` selector.
-                // Any trailing data in transferFromSelector will be
-                // overwritten in the next `mstore` call.
-                mstore(0, 0x23b872dd00000000000000000000000000000000000000000000000000000000)
-
-                /////// Setup Params Area ///////
-                // We copy the fields `from` and `to` in bulk
-                // from our own calldata to the new calldata.
-                calldatacopy(4, 36, 64)
-
-                // Copy `tokenId` field from our own calldata to the new calldata.
-                let assetDataOffset := calldataload(4)
-                calldatacopy(68, add(assetDataOffset, 72), 32)
-
-                /////// Call `token.transferFrom` using the calldata ///////
-                let token := calldataload(add(assetDataOffset, 40))
-                let success := call(
-                    gas,            // forward all gas
-                    token,          // call address of token contract
-                    0,              // don't send any ETH
-                    0,              // pointer to start of input
-                    100,            // length of input
-                    0,              // write output to null
-                    0               // output size is 0 bytes
-                )
-                if success {
-                    return(0, 0)
-                }
-
-                // Revert with `Error("TRANSFER_FAILED")`
-                mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                mstore(64, 0x0000000f5452414e534645525f4641494c454400000000000000000000000000)
-                mstore(96, 0)
-                revert(0, 100)
-            }
-
-            // Revert if undefined function is called
-            revert(0, 0)
-        }
-    }
-
-    /// @dev Gets the proxy id associated with the proxy address.
-    /// @return Proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4)
-    {
-        return PROXY_ID;
-    }
-}

contracts/asset-proxy/contracts/src/MultiAssetProxy.sol

@@ -1,335 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../archive/MixinAssetProxyDispatcher.sol";
-import "../archive/MixinAuthorizable.sol";
-
-
-contract MultiAssetProxy is
-    MixinAssetProxyDispatcher,
-    MixinAuthorizable
-{
-    // Id of this proxy.
-    bytes4 constant internal PROXY_ID = bytes4(keccak256("MultiAsset(uint256[],bytes[])"));
-
-    // solhint-disable-next-line payable-fallback
-    function ()
-        external
-    {
-        // NOTE: The below assembly assumes that clients do some input validation and that the input is properly encoded according to the AbiV2 specification.
-        // It is technically possible for inputs with very large lengths and offsets to cause overflows. However, this would make the calldata prohibitively
-        // expensive and we therefore do not check for overflows in these scenarios.
-        assembly {
-            // The first 4 bytes of calldata holds the function selector
-            let selector := and(calldataload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000)
-
-            // `transferFrom` will be called with the following parameters:
-            // assetData Encoded byte array.
-            // from Address to transfer asset from.
-            // to Address to transfer asset to.
-            // amount Amount of asset to transfer.
-            // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4
-            if eq(selector, 0xa85e59e400000000000000000000000000000000000000000000000000000000) {
-
-                // To lookup a value in a mapping, we load from the storage location keccak256(k, p),
-                // where k is the key left padded to 32 bytes and p is the storage slot
-                mstore(0, caller)
-                mstore(32, authorized_slot)
-
-                // Revert if authorized[msg.sender] == false
-                if iszero(sload(keccak256(0, 64))) {
-                    // Revert with `Error("SENDER_NOT_AUTHORIZED")`
-                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                    mstore(64, 0x0000001553454e4445525f4e4f545f415554484f52495a454400000000000000)
-                    mstore(96, 0)
-                    revert(0, 100)
-                }
-
-                // `transferFrom`.
-                // The function is marked `external`, so no abi decoding is done for
-                // us. Instead, we expect the `calldata` memory to contain the
-                // following:
-                //
-                // | Area     | Offset | Length  | Contents                            |
-                // |----------|--------|---------|-------------------------------------|
-                // | Header   | 0      | 4       | function selector                   |
-                // | Params   |        | 4 * 32  | function parameters:                |
-                // |          | 4      |         |   1. offset to assetData (*)        |
-                // |          | 36     |         |   2. from                           |
-                // |          | 68     |         |   3. to                             |
-                // |          | 100    |         |   4. amount                         |
-                // | Data     |        |         | assetData:                          |
-                // |          | 132    | 32      | assetData Length                    |
-                // |          | 164    | **      | assetData Contents                  |
-                //
-                // (*): offset is computed from start of function parameters, so offset
-                //      by an additional 4 bytes in the calldata.
-                //
-                // (**): see table below to compute length of assetData Contents
-                //
-                // WARNING: The ABIv2 specification allows additional padding between
-                //          the Params and Data section. This will result in a larger
-                //          offset to assetData.
-
-                // Load offset to `assetData`
-                let assetDataOffset := add(calldataload(4), 4)
-
-                // Load length in bytes of `assetData`
-                let assetDataLength := calldataload(assetDataOffset)
-
-                // Asset data itself is encoded as follows:
-                //
-                // | Area     | Offset      | Length  | Contents                            |
-                // |----------|-------------|---------|-------------------------------------|
-                // | Header   | 0           | 4       | assetProxyId                        |
-                // | Params   |             | 2 * 32  | function parameters:                |
-                // |          | 4           |         |   1. offset to amounts (*)          |
-                // |          | 36          |         |   2. offset to nestedAssetData (*)  |
-                // | Data     |             |         | amounts:                            |
-                // |          | 68          | 32      | amounts Length                      |
-                // |          | 100         | a       | amounts Contents                    |
-                // |          |             |         | nestedAssetData:                    |
-                // |          | 100 + a     | 32      | nestedAssetData Length              |
-                // |          | 132 + a     | b       | nestedAssetData Contents (offsets)  |
-                // |          | 132 + a + b |         | nestedAssetData[0, ..., len]        |
-
-                // Assert that the length of asset data:
-                // 1. Must be at least 68 bytes (see table above)
-                // 2. Must be a multiple of 32 (excluding the 4-byte selector)
-                if or(lt(assetDataLength, 68), mod(sub(assetDataLength, 4), 32)) {
-                    // Revert with `Error("INVALID_ASSET_DATA_LENGTH")`
-                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                    mstore(64, 0x00000019494e56414c49445f41535345545f444154415f4c454e475448000000)
-                    mstore(96, 0)
-                    revert(0, 100)
-                }
-
-                // End of asset data in calldata
-                // assetDataOffset
-                // + 32 (assetData len)
-                let assetDataEnd := add(assetDataOffset, add(assetDataLength, 32))
-                if gt(assetDataEnd, calldatasize()) {
-                    // Revert with `Error("INVALID_ASSET_DATA_END")`
-                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                    mstore(64, 0x00000016494e56414c49445f41535345545f444154415f454e44000000000000)
-                    mstore(96, 0)
-                    revert(0, 100)
-                }
-
-                // In order to find the offset to `amounts`, we must add:
-                // assetDataOffset
-                // + 32 (assetData len)
-                // + 4 (assetProxyId)
-                let amountsOffset := calldataload(add(assetDataOffset, 36))
-
-                // In order to find the offset to `nestedAssetData`, we must add:
-                // assetDataOffset
-                // + 32 (assetData len)
-                // + 4 (assetProxyId)
-                // + 32 (amounts offset)
-                let nestedAssetDataOffset := calldataload(add(assetDataOffset, 68))
-
-                // In order to find the start of the `amounts` contents, we must add:
-                // assetDataOffset
-                // + 32 (assetData len)
-                // + 4 (assetProxyId)
-                // + amountsOffset
-                // + 32 (amounts len)
-                let amountsContentsStart := add(assetDataOffset, add(amountsOffset, 68))
-
-                // Load number of elements in `amounts`
-                let amountsLen := calldataload(sub(amountsContentsStart, 32))
-
-                // In order to find the start of the `nestedAssetData` contents, we must add:
-                // assetDataOffset
-                // + 32 (assetData len)
-                // + 4 (assetProxyId)
-                // + nestedAssetDataOffset
-                // + 32 (nestedAssetData len)
-                let nestedAssetDataContentsStart := add(assetDataOffset, add(nestedAssetDataOffset, 68))
-
-                // Load number of elements in `nestedAssetData`
-                let nestedAssetDataLen := calldataload(sub(nestedAssetDataContentsStart, 32))
-
-                // Revert if number of elements in `amounts` differs from number of elements in `nestedAssetData`
-                if sub(amountsLen, nestedAssetDataLen) {
-                    // Revert with `Error("LENGTH_MISMATCH")`
-                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                    mstore(64, 0x0000000f4c454e4754485f4d49534d4154434800000000000000000000000000)
-                    mstore(96, 0)
-                    revert(0, 100)
-                }
-
-                // Copy `transferFrom` selector, offset to `assetData`, `from`, and `to` from calldata to memory
-                calldatacopy(
-                    0,   // memory can safely be overwritten from beginning
-                    0,   // start of calldata
-                    100  // length of selector (4) and 3 params (32 * 3)
-                )
-
-                // Overwrite existing offset to `assetData` with our own
-                mstore(4, 128)
-
-                // Load `amount`
-                let amount := calldataload(100)
-
-                // Calculate number of bytes in `amounts` contents
-                let amountsByteLen := mul(amountsLen, 32)
-
-                // Initialize `assetProxyId` and `assetProxy` to 0
-                let assetProxyId := 0
-                let assetProxy := 0
-
-                // Loop through `amounts` and `nestedAssetData`, calling `transferFrom` for each respective element
-                for {let i := 0} lt(i, amountsByteLen) {i := add(i, 32)} {
-
-                    // Calculate the total amount
-                    let amountsElement := calldataload(add(amountsContentsStart, i))
-                    let totalAmount := mul(amountsElement, amount)
-
-                    // Revert if `amount` != 0 and multiplication resulted in an overflow
-                    if iszero(or(
-                        iszero(amount),
-                        eq(div(totalAmount, amount), amountsElement)
-                    )) {
-                        // Revert with `Error("UINT256_OVERFLOW")`
-                        mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                        mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                        mstore(64, 0x0000001055494e543235365f4f564552464c4f57000000000000000000000000)
-                        mstore(96, 0)
-                        revert(0, 100)
-                    }
-
-                    // Write `totalAmount` to memory
-                    mstore(100, totalAmount)
-
-                    // Load offset to `nestedAssetData[i]`
-                    let nestedAssetDataElementOffset := calldataload(add(nestedAssetDataContentsStart, i))
-
-                    // In order to find the start of the `nestedAssetData[i]` contents, we must add:
-                    // assetDataOffset
-                    // + 32 (assetData len)
-                    // + 4 (assetProxyId)
-                    // + nestedAssetDataOffset
-                    // + 32 (nestedAssetData len)
-                    // + nestedAssetDataElementOffset
-                    // + 32 (nestedAssetDataElement len)
-                    let nestedAssetDataElementContentsStart := add(
-                        assetDataOffset,
-                        add(
-                            nestedAssetDataOffset,
-                            add(nestedAssetDataElementOffset, 100)
-                        )
-                    )
-
-                    // Load length of `nestedAssetData[i]`
-                    let nestedAssetDataElementLenStart := sub(nestedAssetDataElementContentsStart, 32)
-                    let nestedAssetDataElementLen := calldataload(nestedAssetDataElementLenStart)
-
-                    // Revert if the `nestedAssetData` does not contain a 4 byte `assetProxyId`
-                    if lt(nestedAssetDataElementLen, 4) {
-                        // Revert with `Error("LENGTH_GREATER_THAN_3_REQUIRED")`
-                        mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                        mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                        mstore(64, 0x0000001e4c454e4754485f475245415445525f5448414e5f335f524551554952)
-                        mstore(96, 0x4544000000000000000000000000000000000000000000000000000000000000)
-                        revert(0, 100)
-                    }
-
-                    // Load AssetProxy id
-                    let currentAssetProxyId := and(
-                        calldataload(nestedAssetDataElementContentsStart),
-                        0xffffffff00000000000000000000000000000000000000000000000000000000
-                    )
-
-                    // Only load `assetProxy` if `currentAssetProxyId` does not equal `assetProxyId`
-                    // We do not need to check if `currentAssetProxyId` is 0 since `assetProxy` is also initialized to 0
-                    if sub(currentAssetProxyId, assetProxyId) {
-                        // Update `assetProxyId`
-                        assetProxyId := currentAssetProxyId
-                        // To lookup a value in a mapping, we load from the storage location keccak256(k, p),
-                        // where k is the key left padded to 32 bytes and p is the storage slot
-                        mstore(132, assetProxyId)
-                        mstore(164, assetProxies_slot)
-                        assetProxy := sload(keccak256(132, 64))
-                    }
-
-                    // Revert if AssetProxy with given id does not exist
-                    if iszero(assetProxy) {
-                        // Revert with `Error("ASSET_PROXY_DOES_NOT_EXIST")`
-                        mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
-                        mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
-                        mstore(64, 0x0000001a41535345545f50524f58595f444f45535f4e4f545f45584953540000)
-                        mstore(96, 0)
-                        revert(0, 100)
-                    }
-
-                    // Copy `nestedAssetData[i]` from calldata to memory
-                    calldatacopy(
-                        132,                                // memory slot after `amounts[i]`
-                        nestedAssetDataElementLenStart,     // location of `nestedAssetData[i]` in calldata
-                        add(nestedAssetDataElementLen, 32)  // `nestedAssetData[i].length` plus 32 byte length
-                    )
-
-                    // call `assetProxy.transferFrom`
-                    let success := call(
-                        gas,                                    // forward all gas
-                        assetProxy,                             // call address of asset proxy
-                        0,                                      // don't send any ETH
-                        0,                                      // pointer to start of input
-                        add(164, nestedAssetDataElementLen),    // length of input
-                        0,                                      // write output over memory that won't be reused
-                        0                                       // don't copy output to memory
-                    )
-
-                    // Revert with reason given by AssetProxy if `transferFrom` call failed
-                    if iszero(success) {
-                        returndatacopy(
-                            0,                // copy to memory at 0
-                            0,                // copy from return data at 0
-                            returndatasize()  // copy all return data
-                        )
-                        revert(0, returndatasize())
-                    }
-                }
-
-                // Return if no `transferFrom` calls reverted
-                return(0, 0)
-            }
-
-            // Revert if undefined function is called
-            revert(0, 0)
-        }
-    }
-
-    /// @dev Gets the proxy id associated with the proxy address.
-    /// @return Proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4)
-    {
-        return PROXY_ID;
-    }
-}

contracts/asset-proxy/contracts/src/StaticCallProxy.sol

@@ -1,83 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-
-
-// solhint-disable no-unused-vars
-contract StaticCallProxy {
-
-    using LibBytes for bytes;
-
-    // Id of this proxy.
-    bytes4 constant internal PROXY_ID = bytes4(keccak256("StaticCall(address,bytes,bytes32)"));
-
-    /// @dev Makes a staticcall to a target address and verifies that the data returned matches the expected return data.
-    /// @param assetData Byte array encoded with staticCallTarget, staticCallData, and expectedCallResultHash
-    /// @param from This value is ignored.
-    /// @param to This value is ignored.
-    /// @param amount This value is ignored.
-    function transferFrom(
-        bytes calldata assetData,
-        address from,
-        address to,
-        uint256 amount
-    )
-        external
-        view
-    {
-        // Decode params from `assetData`
-        (
-            address staticCallTarget,
-            bytes memory staticCallData,
-            bytes32 expectedReturnDataHash
-        ) = abi.decode(
-            assetData.sliceDestructive(4, assetData.length),
-            (address, bytes, bytes32)
-        );
-
-        // Execute staticcall
-        (bool success, bytes memory returnData) = staticCallTarget.staticcall(staticCallData);
-
-        // Revert with returned data if staticcall is unsuccessful
-        if (!success) {
-            assembly {
-                revert(add(returnData, 32), mload(returnData))
-            }
-        }
-
-        // Revert if hash of return data is not as expected
-        bytes32 returnDataHash = keccak256(returnData);
-        require(
-            expectedReturnDataHash == returnDataHash,
-            "UNEXPECTED_STATIC_CALL_RESULT"
-        );
-    }
-
-    /// @dev Gets the proxy id associated with the proxy address.
-    /// @return Proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4)
-    {
-        return PROXY_ID;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/BalancerBridge.sol

@@ -1,103 +0,0 @@
-
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IBalancerPool.sol";
-
-
-contract BalancerBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded addresses of the "from" token and Balancer pool.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data.
-        (address fromTokenAddress, address poolAddress) = abi.decode(
-            bridgeData,
-            (address, address)
-        );
-        require(toTokenAddress != fromTokenAddress, "BalancerBridge/INVALID_PAIR");
-
-        uint256 fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(fromTokenAddress, poolAddress, fromTokenBalance);
-
-        // Sell all of this contract's `fromTokenAddress` token balance.
-        (uint256 boughtAmount,) = IBalancerPool(poolAddress).swapExactAmountIn(
-            fromTokenAddress, // tokenIn
-            fromTokenBalance, // tokenAmountIn
-            toTokenAddress,   // tokenOut
-            amount,           // minAmountOut
-            uint256(-1)       // maxPrice
-        );
-
-        // Transfer the converted `toToken`s to `to`.
-        LibERC20Token.transfer(toTokenAddress, to, boughtAmount);
-
-        emit ERC20BridgeTransfer(
-            fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/BancorBridge.sol

@@ -1,144 +0,0 @@
-
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IBancorNetwork.sol";
-
-
-contract BancorBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    struct TransferState {
-        address bancorNetworkAddress;
-        address[] path;
-        IEtherToken weth;
-    }
-
-    /// @dev Bancor ETH pseudo-address.
-    address constant public BANCOR_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-
-    // solhint-disable no-empty-blocks
-    /// @dev Payable fallback to receive ETH from Bancor/WETH.
-    function ()
-        external
-        payable
-    {
-        // Poor man's receive in 0.5.9
-        require(msg.data.length == 0);
-    }
-
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded conversion path addresses and Bancor network address
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // hold variables to get around stack depth limitations
-        TransferState memory state;
-        // Decode the bridge data.
-        (
-            state.path,
-            state.bancorNetworkAddress
-        // solhint-disable indent
-        ) = abi.decode(bridgeData, (address[], address));
-        // solhint-enable indent
-        state.weth = IEtherToken(_getWethAddress());
-
-        require(state.path.length >= 2, "BancorBridge/PATH_LENGTH_MUST_BE_GREATER_THAN_TWO");
-
-        // Grant an allowance to the Bancor Network to spend `fromTokenAddress` token.
-        uint256 fromTokenBalance;
-        uint256 payableAmount = 0;
-        // If it's ETH in the path then withdraw from WETH
-        // The Bancor path will have ETH as the 0xeee address
-        // Bancor expects to be paid in ETH not WETH
-        if (state.path[0] == BANCOR_ETH_ADDRESS) {
-            fromTokenBalance = state.weth.balanceOf(address(this));
-            state.weth.withdraw(fromTokenBalance);
-            payableAmount = fromTokenBalance;
-        } else {
-            fromTokenBalance = IERC20Token(state.path[0]).balanceOf(address(this));
-            LibERC20Token.approveIfBelow(state.path[0], state.bancorNetworkAddress, fromTokenBalance);
-        }
-
-        // Convert the tokens
-        uint256 boughtAmount = IBancorNetwork(state.bancorNetworkAddress).convertByPath.value(payableAmount)(
-            state.path, // path originating with source token and terminating in destination token
-            fromTokenBalance, // amount of source token to trade
-            amount, // minimum amount of destination token expected to receive
-            state.path[state.path.length-1] == BANCOR_ETH_ADDRESS ? address(this) : to, // beneficiary
-            address(0), // affiliateAccount; no fee paid
-            0 // affiliateFee; no fee paid
-        );
-
-        if (state.path[state.path.length-1] == BANCOR_ETH_ADDRESS) {
-            state.weth.deposit.value(boughtAmount)();
-            state.weth.transfer(to, boughtAmount);
-        }
-
-        emit ERC20BridgeTransfer(
-            state.path[0] == BANCOR_ETH_ADDRESS ? address(state.weth) : state.path[0],
-            toTokenAddress,
-            fromTokenBalance,
-            boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-
-}

contracts/asset-proxy/contracts/src/bridges/ChaiBridge.sol

@@ -1,75 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IChai.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-
-
-// solhint-disable space-after-comma
-contract ChaiBridge is
-    IERC20Bridge,
-    DeploymentConstants
-{
-    /// @dev Withdraws `amount` of `from` address's Dai from the Chai contract.
-    ///      Transfers `amount` of Dai to `to` address.
-    /// @param from Address to transfer asset from.
-    /// @param to Address to transfer asset to.
-    /// @param amount Amount of asset to transfer.
-    /// @return success The magic bytes `0xdc1600f3` if successful.
-    function bridgeTransferFrom(
-        address /* tokenAddress */,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata /* bridgeData */
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Ensure that only the `ERC20BridgeProxy` can call this function.
-        require(
-            msg.sender == _getERC20BridgeProxyAddress(),
-            "ChaiBridge/ONLY_CALLABLE_BY_ERC20_BRIDGE_PROXY"
-        );
-
-        // Withdraw `from` address's Dai.
-        // NOTE: This contract must be approved to spend Chai on behalf of `from`.
-        bytes memory drawCalldata = abi.encodeWithSelector(
-            IChai(address(0)).draw.selector,
-            from,
-            amount
-        );
-
-        (bool success,) = _getChaiAddress().call(drawCalldata);
-        require(
-            success,
-            "ChaiBridge/DRAW_DAI_FAILED"
-        );
-
-        // Transfer Dai to `to`
-        // This will never fail if the `draw` call was successful
-        IERC20Token(_getDaiAddress()).transfer(to, amount);
-
-        return BRIDGE_SUCCESS;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/CreamBridge.sol

@@ -1,103 +0,0 @@
-
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IBalancerPool.sol";
-
-
-contract CreamBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded addresses of the "from" token and Balancer pool.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data.
-        (address fromTokenAddress, address poolAddress) = abi.decode(
-            bridgeData,
-            (address, address)
-        );
-        require(toTokenAddress != fromTokenAddress, "CreamBridge/INVALID_PAIR");
-
-        uint256 fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(fromTokenAddress, poolAddress, fromTokenBalance);
-
-        // Sell all of this contract's `fromTokenAddress` token balance.
-        (uint256 boughtAmount,) = IBalancerPool(poolAddress).swapExactAmountIn(
-            fromTokenAddress, // tokenIn
-            fromTokenBalance, // tokenAmountIn
-            toTokenAddress,   // tokenOut
-            amount,           // minAmountOut
-            uint256(-1)       // maxPrice
-        );
-
-        // Transfer the converted `toToken`s to `to`.
-        LibERC20Token.transfer(toTokenAddress, to, boughtAmount);
-
-        emit ERC20BridgeTransfer(
-            fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/CryptoComBridge.sol

@@ -1,136 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/LibAddressArray.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IUniswapV2Router01.sol";
-import "../interfaces/IERC20Bridge.sol";
-
-
-// solhint-disable space-after-comma
-// solhint-disable not-rely-on-time
-contract CryptoComBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    struct TransferState {
-        address[] path;
-        address router;
-        uint256 fromTokenBalance;
-    }
-
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded path of token addresses. Last element must be toTokenAddress
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // hold variables to get around stack depth limitations
-        TransferState memory state;
-
-        // Decode the bridge data to get the `fromTokenAddress`.
-        // solhint-disable indent
-        (state.path, state.router) = abi.decode(bridgeData, (address[], address));
-        // solhint-enable indent
-
-        require(state.path.length >= 2, "CryptoComBridge/PATH_LENGTH_MUST_BE_AT_LEAST_TWO");
-        require(state.path[state.path.length - 1] == toTokenAddress, "CryptoComBridge/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN");
-
-        // Just transfer the tokens if they're the same.
-        if (state.path[0] == toTokenAddress) {
-            LibERC20Token.transfer(state.path[0], to, amount);
-            return BRIDGE_SUCCESS;
-        }
-
-        // Get our balance of `fromTokenAddress` token.
-        state.fromTokenBalance = IERC20Token(state.path[0]).balanceOf(address(this));
-
-        // Grant the SushiSwap router an allowance.
-        LibERC20Token.approveIfBelow(
-            state.path[0],
-            state.router,
-            state.fromTokenBalance
-        );
-
-        // Buy as much `toTokenAddress` token with `fromTokenAddress` token
-        // and transfer it to `to`.
-        IUniswapV2Router01 router = IUniswapV2Router01(state.router);
-        uint[] memory amounts = router.swapExactTokensForTokens(
-             // Sell all tokens we hold.
-            state.fromTokenBalance,
-             // Minimum buy amount.
-            amount,
-            // Convert `fromTokenAddress` to `toTokenAddress`.
-            state.path,
-            // Recipient is `to`.
-            to,
-            // Expires after this block.
-            block.timestamp
-        );
-
-        emit ERC20BridgeTransfer(
-            // input token
-            state.path[0],
-            // output token
-            toTokenAddress,
-            // input token amount
-            state.fromTokenBalance,
-            // output token amount
-            amounts[amounts.length - 1],
-            from,
-            to
-        );
-
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/CurveBridge.sol

@@ -1,119 +0,0 @@
-
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/ICurve.sol";
-
-
-// solhint-disable not-rely-on-time
-// solhint-disable space-after-comma
-contract CurveBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    struct CurveBridgeData {
-        address curveAddress;
-        bytes4 exchangeFunctionSelector;
-        address fromTokenAddress;
-        int128 fromCoinIdx;
-        int128 toCoinIdx;
-    }
-
-    /// @dev Callback for `ICurve`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
-    ///      (DAI, USDC) to the Curve contract, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoeded "from" token address.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data to get the Curve metadata.
-        CurveBridgeData memory data = abi.decode(bridgeData, (CurveBridgeData));
-
-        require(toTokenAddress != data.fromTokenAddress, "CurveBridge/INVALID_PAIR");
-        uint256 fromTokenBalance = IERC20Token(data.fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(data.fromTokenAddress, data.curveAddress, fromTokenBalance);
-
-        // Try to sell all of this contract's `fromTokenAddress` token balance.
-        {
-            (bool didSucceed, bytes memory resultData) =
-                data.curveAddress.call(abi.encodeWithSelector(
-                    data.exchangeFunctionSelector,
-                    data.fromCoinIdx,
-                    data.toCoinIdx,
-                    // dx
-                    fromTokenBalance,
-                    // min dy
-                    amount
-                ));
-            if (!didSucceed) {
-                assembly { revert(add(resultData, 32), mload(resultData)) }
-            }
-        }
-
-        uint256 toTokenBalance = IERC20Token(toTokenAddress).balanceOf(address(this));
-        // Transfer the converted `toToken`s to `to`.
-        LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
-
-        emit ERC20BridgeTransfer(
-            data.fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            toTokenBalance,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/DODOBridge.sol

@@ -1,147 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-
-
-interface IDODOHelper {
-
-    function querySellQuoteToken(address dodo, uint256 amount) external view returns (uint256);
-}
-
-
-interface IDODO {
-
-    function sellBaseToken(uint256 amount, uint256 minReceiveQuote, bytes calldata data) external returns (uint256);
-
-    function buyBaseToken(uint256 amount, uint256 maxPayQuote, bytes calldata data) external returns (uint256);
-
-}
-
-
-contract DODOBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-
-    struct TransferState {
-        address fromTokenAddress;
-        uint256 fromTokenBalance;
-        address pool;
-        bool isSellBase;
-    }
-
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded path of token addresses. Last element must be toTokenAddress
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        TransferState memory state;
-        // Decode the bridge data to get the `fromTokenAddress`.
-        (state.fromTokenAddress, state.pool, state.isSellBase) = abi.decode(bridgeData, (address, address, bool));
-        require(state.pool != address(0), "DODOBridge/InvalidPool");
-        IDODO exchange = IDODO(state.pool);
-        // Get our balance of `fromTokenAddress` token.
-        state.fromTokenBalance = IERC20Token(state.fromTokenAddress).balanceOf(address(this));
-
-        // Grant the pool an allowance.
-        LibERC20Token.approveIfBelow(
-            state.fromTokenAddress,
-            address(exchange),
-            state.fromTokenBalance
-        );
-
-        uint256 boughtAmount;
-        if (state.isSellBase) {
-            boughtAmount = exchange.sellBaseToken(
-                // amount to sell
-                state.fromTokenBalance,
-                // min receive amount
-                1,
-                new bytes(0)
-            );
-        } else {
-            // Need to re-calculate the sell quote amount into buyBase
-            boughtAmount = IDODOHelper(_getDODOHelperAddress()).querySellQuoteToken(
-                address(exchange),
-                state.fromTokenBalance
-            );
-            exchange.buyBaseToken(
-                // amount to buy
-                boughtAmount,
-                // max pay amount
-                state.fromTokenBalance,
-                new bytes(0)
-            );
-        }
-        // Transfer funds to `to`
-        IERC20Token(toTokenAddress).transfer(to, boughtAmount);
-
-
-        emit ERC20BridgeTransfer(
-            // input token
-            state.fromTokenAddress,
-            // output token
-            toTokenAddress,
-            // input token amount
-            state.fromTokenBalance,
-            // output token amount
-            boughtAmount,
-            from,
-            to
-        );
-
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/DexForwarderBridge.sol

@@ -1,200 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-exchange-libs/contracts/src/LibMath.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "./MixinGasToken.sol";
-
-
-// solhint-disable space-after-comma, indent
-contract DexForwarderBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants,
-    MixinGasToken
-{
-    using LibSafeMath for uint256;
-
-    /// @dev Data needed to reconstruct a bridge call.
-    struct BridgeCall {
-        address target;
-        uint256 inputTokenAmount;
-        uint256 outputTokenAmount;
-        bytes bridgeData;
-    }
-
-    /// @dev Intermediate state variables used by `bridgeTransferFrom()`, in
-    ///      struct form to get around stack limits.
-    struct TransferFromState {
-        address inputToken;
-        uint256 initialInputTokenBalance;
-        uint256 callInputTokenAmount;
-        uint256 callOutputTokenAmount;
-        uint256 totalInputTokenSold;
-        BridgeCall[] calls;
-    }
-
-    /// @dev Spends this contract's entire balance of input tokens by forwarding
-    /// them to other bridges. Reverts if the entire balance is not spent.
-    /// @param outputToken The token being bought.
-    /// @param to The recipient of the bought tokens.
-    /// @param bridgeData The abi-encoded input token address.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address outputToken,
-        address /* from */,
-        address to,
-        uint256 /* amount */,
-        bytes calldata bridgeData
-    )
-        external
-        freesGasTokensFromCollector
-        returns (bytes4 success)
-    {
-        require(
-            msg.sender == _getERC20BridgeProxyAddress(),
-            "DexForwarderBridge/SENDER_NOT_AUTHORIZED"
-        );
-        TransferFromState memory state;
-        (
-            state.inputToken,
-            state.calls
-        ) = abi.decode(bridgeData, (address, BridgeCall[]));
-
-        state.initialInputTokenBalance =
-            IERC20Token(state.inputToken).balanceOf(address(this));
-
-        for (uint256 i = 0; i < state.calls.length; ++i) {
-            // Stop if the we've sold all our input tokens.
-            if (state.totalInputTokenSold >= state.initialInputTokenBalance) {
-                break;
-            }
-
-            // Compute token amounts.
-            state.callInputTokenAmount = LibSafeMath.min256(
-                state.calls[i].inputTokenAmount,
-                state.initialInputTokenBalance.safeSub(state.totalInputTokenSold)
-            );
-            state.callOutputTokenAmount = LibMath.getPartialAmountFloor(
-                state.callInputTokenAmount,
-                state.calls[i].inputTokenAmount,
-                state.calls[i].outputTokenAmount
-            );
-
-            // Execute the call in a new context so we can recoup transferred
-            // funds by reverting.
-            (bool didSucceed, ) = address(this)
-                .call(abi.encodeWithSelector(
-                    this.executeBridgeCall.selector,
-                    state.calls[i].target,
-                    to,
-                    state.inputToken,
-                    outputToken,
-                    state.callInputTokenAmount,
-                    state.callOutputTokenAmount,
-                    state.calls[i].bridgeData
-                ));
-
-            if (didSucceed) {
-                // Increase the amount of tokens sold.
-                state.totalInputTokenSold = state.totalInputTokenSold.safeAdd(
-                    state.callInputTokenAmount
-                );
-            }
-        }
-        // Always succeed.
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev Transfers `inputToken` token to a bridge contract then calls
-    ///      its `bridgeTransferFrom()`. This is executed in separate context
-    ///      so we can revert the transfer on error. This can only be called
-    //       by this contract itself.
-    /// @param bridge The bridge contract.
-    /// @param to The recipient of `outputToken` tokens.
-    /// @param inputToken The input token.
-    /// @param outputToken The output token.
-    /// @param inputTokenAmount The amount of input tokens to transfer to `bridge`.
-    /// @param outputTokenAmount The amount of expected output tokens to be sent
-    ///        to `to` by `bridge`.
-    function executeBridgeCall(
-        address bridge,
-        address to,
-        address inputToken,
-        address outputToken,
-        uint256 inputTokenAmount,
-        uint256 outputTokenAmount,
-        bytes calldata bridgeData
-    )
-        external
-    {
-        // Must be called through `bridgeTransferFrom()`.
-        require(msg.sender == address(this), "DexForwarderBridge/ONLY_SELF");
-        // `bridge` must not be this contract.
-        require(bridge != address(this));
-
-        // Get the starting balance of output tokens for `to`.
-        uint256 initialRecipientBalance = IERC20Token(outputToken).balanceOf(to);
-
-        // Transfer input tokens to the bridge.
-        LibERC20Token.transfer(inputToken, bridge, inputTokenAmount);
-
-        // Call the bridge.
-        (bool didSucceed, bytes memory resultData) =
-            bridge.call(abi.encodeWithSelector(
-                IERC20Bridge(0).bridgeTransferFrom.selector,
-                outputToken,
-                bridge,
-                to,
-                outputTokenAmount,
-                bridgeData
-            ));
-
-        // Revert if the call failed or not enough tokens were bought.
-        // This will also undo the token transfer.
-        require(
-            didSucceed
-            && resultData.length == 32
-            && LibBytes.readBytes32(resultData, 0) == bytes32(BRIDGE_SUCCESS)
-            && IERC20Token(outputToken).balanceOf(to).safeSub(initialRecipientBalance) >= outputTokenAmount
-        );
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/DydxBridge.sol

@@ -1,242 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "@0x/contracts-exchange-libs/contracts/src/LibMath.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IDydxBridge.sol";
-import "../interfaces/IDydx.sol";
-
-
-contract DydxBridge is
-    IERC20Bridge,
-    IDydxBridge,
-    DeploymentConstants
-{
-
-    using LibSafeMath for uint256;
-
-    /// @dev Callback for `IERC20Bridge`. Deposits or withdraws tokens from a dydx account.
-    ///      Notes:
-    ///         1. This bridge must be set as an operator of the input dydx account.
-    ///         2. This function may only be called in the context of the 0x Exchange.
-    ///         3. The maker or taker of the 0x order must be the dydx account owner.
-    ///         4. Deposits into dydx are made from the `from` address.
-    ///         5. Withdrawals from dydx are made to the `to` address.
-    ///         6. Calling this function must always withdraw at least `amount`,
-    ///            otherwise the `ERC20Bridge` will revert.
-    /// @param from The sender of the tokens and owner of the dydx account.
-    /// @param to The recipient of the tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to deposit or withdraw.
-    /// @param encodedBridgeData An abi-encoded `BridgeData` struct.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address, /* toTokenAddress */
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata encodedBridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Ensure that only the `ERC20BridgeProxy` can call this function.
-        require(
-            msg.sender == _getERC20BridgeProxyAddress(),
-            "DydxBridge/ONLY_CALLABLE_BY_ERC20_BRIDGE_PROXY"
-        );
-
-        // Decode bridge data.
-        (BridgeData memory bridgeData) = abi.decode(encodedBridgeData, (BridgeData));
-
-        // The dydx accounts are owned by the `from` address.
-        IDydx.AccountInfo[] memory accounts = _createAccounts(from, bridgeData);
-
-        // Create dydx actions to run on the dydx accounts.
-        IDydx.ActionArgs[] memory actions = _createActions(
-            from,
-            to,
-            amount,
-            bridgeData
-        );
-
-        // Run operation. This will revert on failure.
-        IDydx(_getDydxAddress()).operate(accounts, actions);
-
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev Creates an array of accounts for dydx to operate on.
-    ///      All accounts must belong to the same owner.
-    /// @param accountOwner Owner of the dydx account.
-    /// @param bridgeData A `BridgeData` struct.
-    function _createAccounts(
-        address accountOwner,
-        BridgeData memory bridgeData
-    )
-        internal
-        returns (IDydx.AccountInfo[] memory accounts)
-    {
-        uint256[] memory accountNumbers = bridgeData.accountNumbers;
-        uint256 nAccounts = accountNumbers.length;
-        accounts = new IDydx.AccountInfo[](nAccounts);
-        for (uint256 i = 0; i < nAccounts; ++i) {
-            accounts[i] = IDydx.AccountInfo({
-                owner: accountOwner,
-                number: accountNumbers[i]
-            });
-        }
-    }
-
-    /// @dev Creates an array of actions to carry out on dydx.
-    /// @param depositFrom Deposit value from this address (owner of the dydx account).
-    /// @param withdrawTo Withdraw value to this address.
-    /// @param amount The amount of value available to operate on.
-    /// @param bridgeData A `BridgeData` struct.
-    function _createActions(
-        address depositFrom,
-        address withdrawTo,
-        uint256 amount,
-        BridgeData memory bridgeData
-    )
-        internal
-        returns (IDydx.ActionArgs[] memory actions)
-    {
-        BridgeAction[] memory bridgeActions = bridgeData.actions;
-        uint256 nBridgeActions = bridgeActions.length;
-        actions = new IDydx.ActionArgs[](nBridgeActions);
-        for (uint256 i = 0; i < nBridgeActions; ++i) {
-            // Cache current bridge action.
-            BridgeAction memory bridgeAction = bridgeActions[i];
-
-            // Scale amount, if conversion rate is set.
-            uint256 scaledAmount;
-            if (bridgeAction.conversionRateDenominator > 0) {
-                scaledAmount = LibMath.safeGetPartialAmountFloor(
-                    bridgeAction.conversionRateNumerator,
-                    bridgeAction.conversionRateDenominator,
-                    amount
-                );
-            } else {
-                scaledAmount = amount;
-            }
-
-            // Construct dydx action.
-            if (bridgeAction.actionType == BridgeActionType.Deposit) {
-                // Deposit tokens from the account owner into their dydx account.
-                actions[i] = _createDepositAction(
-                    depositFrom,
-                    scaledAmount,
-                    bridgeAction
-                );
-            } else if (bridgeAction.actionType == BridgeActionType.Withdraw) {
-                // Withdraw tokens from dydx to the `otherAccount`.
-                actions[i] = _createWithdrawAction(
-                    withdrawTo,
-                    scaledAmount,
-                    bridgeAction
-                );
-            } else {
-                // If all values in the `Action` enum are handled then this
-                // revert is unreachable: Solidity will revert when casting
-                // from `uint8` to `Action`.
-                revert("DydxBridge/UNRECOGNIZED_BRIDGE_ACTION");
-            }
-        }
-    }
-
-    /// @dev Returns a dydx `DepositAction`.
-    /// @param depositFrom Deposit tokens from this address who is also the account owner.
-    /// @param amount of tokens to deposit.
-    /// @param bridgeAction A `BridgeAction` struct.
-    /// @return depositAction The encoded dydx action.
-    function _createDepositAction(
-        address depositFrom,
-        uint256 amount,
-        BridgeAction memory bridgeAction
-    )
-        internal
-        pure
-        returns (
-            IDydx.ActionArgs memory depositAction
-        )
-    {
-        // Create dydx amount.
-        IDydx.AssetAmount memory dydxAmount = IDydx.AssetAmount({
-            sign: true,                                 // true if positive.
-            denomination: IDydx.AssetDenomination.Wei,  // Wei => actual token amount held in account.
-            ref: IDydx.AssetReference.Delta,                // Delta => a relative amount.
-            value: amount                               // amount to deposit.
-        });
-
-        // Create dydx deposit action.
-        depositAction = IDydx.ActionArgs({
-            actionType: IDydx.ActionType.Deposit,           // deposit tokens.
-            amount: dydxAmount,                             // amount to deposit.
-            accountIdx: bridgeAction.accountIdx,             // index in the `accounts` when calling `operate`.
-            primaryMarketId: bridgeAction.marketId,         // indicates which token to deposit.
-            otherAddress: depositFrom,                      // deposit from the account owner.
-            // unused parameters
-            secondaryMarketId: 0,
-            otherAccountIdx: 0,
-            data: hex''
-        });
-    }
-
-    /// @dev Returns a dydx `WithdrawAction`.
-    /// @param withdrawTo Withdraw tokens to this address.
-    /// @param amount of tokens to withdraw.
-    /// @param bridgeAction A `BridgeAction` struct.
-    /// @return withdrawAction The encoded dydx action.
-    function _createWithdrawAction(
-        address withdrawTo,
-        uint256 amount,
-        BridgeAction memory bridgeAction
-    )
-        internal
-        pure
-        returns (
-            IDydx.ActionArgs memory withdrawAction
-        )
-    {
-        // Create dydx amount.
-        IDydx.AssetAmount memory amountToWithdraw = IDydx.AssetAmount({
-            sign: false,                                    // false if negative.
-            denomination: IDydx.AssetDenomination.Wei,      // Wei => actual token amount held in account.
-            ref: IDydx.AssetReference.Delta,                // Delta => a relative amount.
-            value: amount                                   // amount to withdraw.
-        });
-
-        // Create withdraw action.
-        withdrawAction = IDydx.ActionArgs({
-            actionType: IDydx.ActionType.Withdraw,          // withdraw tokens.
-            amount: amountToWithdraw,                       // amount to withdraw.
-            accountIdx: bridgeAction.accountIdx,            // index in the `accounts` when calling `operate`.
-            primaryMarketId: bridgeAction.marketId,         // indicates which token to withdraw.
-            otherAddress: withdrawTo,                       // withdraw tokens to this address.
-            // unused parameters
-            secondaryMarketId: 0,
-            otherAccountIdx: 0,
-            data: hex''
-        });
-    }
-}

contracts/asset-proxy/contracts/src/bridges/Eth2DaiBridge.sol

@@ -1,98 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IEth2Dai.sol";
-
-
-// solhint-disable space-after-comma
-contract Eth2DaiBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
-    ///      (DAI or WETH) to the Eth2Dai contract, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to give to `to` (either DAI or WETH).
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoeded "from" token address.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data to get the `fromTokenAddress`.
-        (address fromTokenAddress) = abi.decode(bridgeData, (address));
-
-        IEth2Dai exchange = IEth2Dai(_getEth2DaiAddress());
-        uint256 fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(fromTokenAddress, address(exchange), fromTokenBalance);
-
-        // Try to sell all of this contract's `fromTokenAddress` token balance.
-        uint256 boughtAmount = exchange.sellAllAmount(
-            fromTokenAddress,
-            fromTokenBalance,
-            toTokenAddress,
-            amount
-        );
-        // Transfer the converted `toToken`s to `to`.
-        LibERC20Token.transfer(toTokenAddress, to, boughtAmount);
-
-        emit ERC20BridgeTransfer(
-            fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/KyberBridge.sol

@@ -1,169 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IKyberNetworkProxy.sol";
-
-
-// solhint-disable space-after-comma
-contract KyberBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    using LibSafeMath for uint256;
-
-    // @dev Structure used internally to get around stack limits.
-    struct TradeState {
-        IKyberNetworkProxy kyber;
-        IEtherToken weth;
-        address fromTokenAddress;
-        uint256 fromTokenBalance;
-        uint256 payableAmount;
-        uint256 conversionRate;
-        bytes hint;
-    }
-
-    /// @dev Kyber ETH pseudo-address.
-    address constant public KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev `bridgeTransferFrom()` failure result.
-    bytes4 constant private BRIDGE_FAILED = 0x0;
-    /// @dev Precision of Kyber rates.
-    uint256 constant private KYBER_RATE_BASE = 10 ** 18;
-
-    // solhint-disable no-empty-blocks
-    /// @dev Payable fallback to receive ETH from Kyber/WETH.
-    function ()
-        external
-        payable
-    {
-        // Poor man's receive in 0.5.9
-        require(msg.data.length == 0);
-    }
-
-    /// @dev Callback for `IKyberBridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
-    ///      to the `KyberNetworkProxy` contract, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to give to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoeded "from" token address.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        TradeState memory state;
-        state.kyber = IKyberNetworkProxy(_getKyberNetworkProxyAddress());
-        state.weth = IEtherToken(_getWethAddress());
-        // Decode the bridge data to get the `fromTokenAddress`.
-        (state.fromTokenAddress, state.hint) = abi.decode(bridgeData, (address, bytes));
-        // Query the balance of "from" tokens.
-        state.fromTokenBalance = IERC20Token(state.fromTokenAddress).balanceOf(address(this));
-        if (state.fromTokenBalance == 0) {
-            // Return failure if no input tokens.
-            return BRIDGE_FAILED;
-        }
-        if (state.fromTokenAddress == toTokenAddress) {
-            // Just transfer the tokens if they're the same.
-            LibERC20Token.transfer(state.fromTokenAddress, to, state.fromTokenBalance);
-            return BRIDGE_SUCCESS;
-        }
-        if (state.fromTokenAddress == address(state.weth)) {
-            // From WETH
-            state.fromTokenAddress = KYBER_ETH_ADDRESS;
-            state.payableAmount = state.fromTokenBalance;
-            state.weth.withdraw(state.fromTokenBalance);
-        } else {
-            LibERC20Token.approveIfBelow(
-                state.fromTokenAddress,
-                address(state.kyber),
-                state.fromTokenBalance
-            );
-        }
-        bool isToTokenWeth = toTokenAddress == address(state.weth);
-
-        // Try to sell all of this contract's input token balance through
-        // `KyberNetworkProxy.trade()`.
-        uint256 boughtAmount = state.kyber.tradeWithHint.value(state.payableAmount)(
-            // Input token.
-            state.fromTokenAddress,
-            // Sell amount.
-            state.fromTokenBalance,
-            // Output token.
-            isToTokenWeth ? KYBER_ETH_ADDRESS : toTokenAddress,
-            // Transfer to this contract if converting to ETH, otherwise
-            // transfer directly to the recipient.
-            isToTokenWeth ? address(uint160(address(this))) : address(uint160(to)),
-            // Buy as much as possible.
-            uint256(-1),
-            // The minimum conversion rate
-            1,
-            // No affiliate address.
-            address(0),
-            state.hint
-        );
-        // Wrap ETH output and transfer to recipient.
-        if (isToTokenWeth) {
-            state.weth.deposit.value(boughtAmount)();
-            state.weth.transfer(to, boughtAmount);
-        }
-
-        emit ERC20BridgeTransfer(
-            state.fromTokenAddress == KYBER_ETH_ADDRESS ? address(state.weth) : state.fromTokenAddress,
-            toTokenAddress,
-            state.fromTokenBalance,
-            boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-
-}

contracts/asset-proxy/contracts/src/bridges/MStableBridge.sol

@@ -1,94 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IMStable.sol";
-
-
-contract MStableBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-
-    /// @dev Swaps specified tokens against the mStable mUSD contract
-    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded "from" token address.
-    /// @return success The magic bytes if successful.
-    // solhint-disable no-unused-vars
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data to get the `fromTokenAddress`.
-        (address fromTokenAddress) = abi.decode(bridgeData, (address));
-
-        IMStable exchange = IMStable(_getMUsdAddress());
-        uint256 fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(fromTokenAddress, address(exchange), fromTokenBalance);
-
-        // Try to sell all of this contract's `fromTokenAddress` token balance.
-        uint256 boughtAmount = exchange.swap(
-            fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            to
-        );
-
-        emit ERC20BridgeTransfer(
-            fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/MixinGasToken.sol

@@ -1,55 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.16;
-
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IGasToken.sol";
-
-
-contract MixinGasToken is
-    DeploymentConstants
-{
-
-    /// @dev Frees gas tokens based on the amount of gas consumed in the function
-    modifier freesGasTokens {
-        uint256 gasBefore = gasleft();
-        _;
-        IGasToken gst = IGasToken(_getGstAddress());
-        if (address(gst) != address(0)) {
-            // (gasUsed + FREE_BASE) / (2 * REIMBURSE - FREE_TOKEN)
-            //            14154             24000        6870
-            uint256 value = (gasBefore - gasleft() + 14154) / 41130;
-            gst.freeUpTo(value);
-        }
-    }
-
-    /// @dev Frees gas tokens using the balance of `from`. Amount freed is based
-    ///     on the gas consumed in the function
-    modifier freesGasTokensFromCollector() {
-        uint256 gasBefore = gasleft();
-        _;
-        IGasToken gst = IGasToken(_getGstAddress());
-        if (address(gst) != address(0)) {
-            // (gasUsed + FREE_BASE) / (2 * REIMBURSE - FREE_TOKEN)
-            //            14154             24000        6870
-            uint256 value = (gasBefore - gasleft() + 14154) / 41130;
-            gst.freeFromUpTo(_getGstCollectorAddress(), value);
-        }
-    }
-}

contracts/asset-proxy/contracts/src/bridges/MooniswapBridge.sol

@@ -1,148 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IMooniswap.sol";
-
-
-// solhint-disable space-after-comma
-// solhint-disable not-rely-on-time
-contract MooniswapBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-
-    struct TransferState {
-        IMooniswap pool;
-        uint256 fromTokenBalance;
-        IEtherToken weth;
-        uint256 boughtAmount;
-        address fromTokenAddress;
-        address toTokenAddress;
-    }
-
-    // solhint-disable no-empty-blocks
-    /// @dev Payable fallback to receive ETH from uniswap.
-    function ()
-        external
-        payable
-    {}
-
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded path of token addresses. Last element must be toTokenAddress
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // State memory object to avoid stack overflows.
-        TransferState memory state;
-        // Decode the bridge data to get the `fromTokenAddress`.
-        address fromTokenAddress = abi.decode(bridgeData, (address));
-        // Get the weth contract.
-        state.weth = IEtherToken(_getWethAddress());
-        // Get our balance of `fromTokenAddress` token.
-        state.fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-
-        state.fromTokenAddress = fromTokenAddress == address(state.weth) ? address(0) : fromTokenAddress;
-        state.toTokenAddress = toTokenAddress == address(state.weth) ? address(0) : toTokenAddress;
-        state.pool = IMooniswap(
-            IMooniswapRegistry(_getMooniswapAddress()).pools(
-                state.fromTokenAddress,
-                state.toTokenAddress
-            )
-        );
-
-        // withdraw WETH to ETH
-        if (state.fromTokenAddress == address(0)) {
-            state.weth.withdraw(state.fromTokenBalance);
-        } else {
-            // Grant the pool an allowance.
-            LibERC20Token.approveIfBelow(
-                state.fromTokenAddress,
-                address(state.pool),
-                state.fromTokenBalance
-            );
-        }
-        uint256 ethValue = state.fromTokenAddress == address(0) ? state.fromTokenBalance : 0;
-        state.boughtAmount = state.pool.swap.value(ethValue)(
-            state.fromTokenAddress,
-            state.toTokenAddress,
-            state.fromTokenBalance,
-            amount,
-            address(0)
-        );
-        // Deposit to WETH
-        if (state.toTokenAddress == address(0)) {
-            state.weth.deposit.value(state.boughtAmount)();
-        }
-
-        // Transfer funds to `to`
-        LibERC20Token.transfer(toTokenAddress, to, state.boughtAmount);
-
-        emit ERC20BridgeTransfer(
-            // input token
-            fromTokenAddress,
-            // output token
-            toTokenAddress,
-            // input token amount
-            state.fromTokenBalance,
-            // output token amount
-            state.boughtAmount,
-            from,
-            to
-        );
-
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/ShellBridge.sol

@@ -1,95 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/IShell.sol";
-
-
-contract ShellBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-
-    /// @dev Swaps specified tokens against the Shell contract
-    /// @param toTokenAddress The token to give to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded "from" token address.
-    /// @return success The magic bytes if successful.
-    // solhint-disable no-unused-vars
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data to get the `fromTokenAddress` and `pool`.
-        (address fromTokenAddress, address pool) = abi.decode(bridgeData, (address, address));
-
-        uint256 fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(fromTokenAddress, pool, fromTokenBalance);
-
-        // Try to sell all of this contract's `fromTokenAddress` token balance.
-        uint256 boughtAmount = IShell(pool).originSwap(
-            fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            amount, // min amount
-            block.timestamp + 1
-        );
-        LibERC20Token.transfer(toTokenAddress, to, boughtAmount);
-
-        emit ERC20BridgeTransfer(
-            fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/SnowSwapBridge.sol

@@ -1,119 +0,0 @@
-
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/ICurve.sol";
-
-
-// solhint-disable not-rely-on-time
-// solhint-disable space-after-comma
-contract SnowSwapBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    struct SnowSwapBridgeData {
-        address curveAddress;
-        bytes4 exchangeFunctionSelector;
-        address fromTokenAddress;
-        int128 fromCoinIdx;
-        int128 toCoinIdx;
-    }
-
-    /// @dev Callback for `ICurve`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
-    ///      (DAI, USDC) to the Curve contract, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoeded "from" token address.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data to get the SnowSwap metadata.
-        SnowSwapBridgeData memory data = abi.decode(bridgeData, (SnowSwapBridgeData));
-
-        require(toTokenAddress != data.fromTokenAddress, "SnowSwapBridge/INVALID_PAIR");
-        uint256 fromTokenBalance = IERC20Token(data.fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(data.fromTokenAddress, data.curveAddress, fromTokenBalance);
-
-        // Try to sell all of this contract's `fromTokenAddress` token balance.
-        {
-            (bool didSucceed, bytes memory resultData) =
-                data.curveAddress.call(abi.encodeWithSelector(
-                    data.exchangeFunctionSelector,
-                    data.fromCoinIdx,
-                    data.toCoinIdx,
-                    // dx
-                    fromTokenBalance,
-                    // min dy
-                    amount
-                ));
-            if (!didSucceed) {
-                assembly { revert(add(resultData, 32), mload(resultData)) }
-            }
-        }
-
-        uint256 toTokenBalance = IERC20Token(toTokenAddress).balanceOf(address(this));
-        // Transfer the converted `toToken`s to `to`.
-        LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
-
-        emit ERC20BridgeTransfer(
-            data.fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            toTokenBalance,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/SushiSwapBridge.sol

@@ -1,136 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/LibAddressArray.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IUniswapV2Router01.sol";
-import "../interfaces/IERC20Bridge.sol";
-
-
-// solhint-disable space-after-comma
-// solhint-disable not-rely-on-time
-contract SushiSwapBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    struct TransferState {
-        address[] path;
-        address router;
-        uint256 fromTokenBalance;
-    }
-
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded path of token addresses. Last element must be toTokenAddress
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // hold variables to get around stack depth limitations
-        TransferState memory state;
-
-        // Decode the bridge data to get the `fromTokenAddress`.
-        // solhint-disable indent
-        (state.path, state.router) = abi.decode(bridgeData, (address[], address));
-        // solhint-enable indent
-
-        require(state.path.length >= 2, "SushiSwapBridge/PATH_LENGTH_MUST_BE_AT_LEAST_TWO");
-        require(state.path[state.path.length - 1] == toTokenAddress, "SushiSwapBridge/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN");
-
-        // Just transfer the tokens if they're the same.
-        if (state.path[0] == toTokenAddress) {
-            LibERC20Token.transfer(state.path[0], to, amount);
-            return BRIDGE_SUCCESS;
-        }
-
-        // Get our balance of `fromTokenAddress` token.
-        state.fromTokenBalance = IERC20Token(state.path[0]).balanceOf(address(this));
-
-        // Grant the SushiSwap router an allowance.
-        LibERC20Token.approveIfBelow(
-            state.path[0],
-            state.router,
-            state.fromTokenBalance
-        );
-
-        // Buy as much `toTokenAddress` token with `fromTokenAddress` token
-        // and transfer it to `to`.
-        IUniswapV2Router01 router = IUniswapV2Router01(state.router);
-        uint[] memory amounts = router.swapExactTokensForTokens(
-             // Sell all tokens we hold.
-            state.fromTokenBalance,
-             // Minimum buy amount.
-            amount,
-            // Convert `fromTokenAddress` to `toTokenAddress`.
-            state.path,
-            // Recipient is `to`.
-            to,
-            // Expires after this block.
-            block.timestamp
-        );
-
-        emit ERC20BridgeTransfer(
-            // input token
-            state.path[0],
-            // output token
-            toTokenAddress,
-            // input token amount
-            state.fromTokenBalance,
-            // output token amount
-            amounts[amounts.length - 1],
-            from,
-            to
-        );
-
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/SwerveBridge.sol

@@ -1,119 +0,0 @@
-
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IERC20Bridge.sol";
-import "../interfaces/ICurve.sol";
-
-
-// solhint-disable not-rely-on-time
-// solhint-disable space-after-comma
-contract SwerveBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    struct SwerveBridgeData {
-        address curveAddress;
-        bytes4 exchangeFunctionSelector;
-        address fromTokenAddress;
-        int128 fromCoinIdx;
-        int128 toCoinIdx;
-    }
-
-    /// @dev Callback for `ICurve`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
-    ///      (DAI, USDC) to the Curve contract, then transfers the bought
-    ///      tokens to `to`.
-    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoeded "from" token address.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // Decode the bridge data to get the SwerveBridgeData metadata.
-        SwerveBridgeData memory data = abi.decode(bridgeData, (SwerveBridgeData));
-
-        require(toTokenAddress != data.fromTokenAddress, "SwerveBridge/INVALID_PAIR");
-        uint256 fromTokenBalance = IERC20Token(data.fromTokenAddress).balanceOf(address(this));
-        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(data.fromTokenAddress, data.curveAddress, fromTokenBalance);
-
-        // Try to sell all of this contract's `fromTokenAddress` token balance.
-        {
-            (bool didSucceed, bytes memory resultData) =
-                data.curveAddress.call(abi.encodeWithSelector(
-                    data.exchangeFunctionSelector,
-                    data.fromCoinIdx,
-                    data.toCoinIdx,
-                    // dx
-                    fromTokenBalance,
-                    // min dy
-                    amount
-                ));
-            if (!didSucceed) {
-                assembly { revert(add(resultData, 32), mload(resultData)) }
-            }
-        }
-
-        uint256 toTokenBalance = IERC20Token(toTokenAddress).balanceOf(address(this));
-        // Transfer the converted `toToken`s to `to`.
-        LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
-
-        emit ERC20BridgeTransfer(
-            data.fromTokenAddress,
-            toTokenAddress,
-            fromTokenBalance,
-            toTokenBalance,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Magic success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/UniswapBridge.sol

@@ -1,220 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IUniswapExchangeFactory.sol";
-import "../interfaces/IUniswapExchange.sol";
-import "../interfaces/IERC20Bridge.sol";
-
-
-// solhint-disable space-after-comma
-// solhint-disable not-rely-on-time
-contract UniswapBridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    // Struct to hold `bridgeTransferFrom()` local variables in memory and to avoid
-    // stack overflows.
-    struct TransferState {
-        IUniswapExchange exchange;
-        uint256 fromTokenBalance;
-        IEtherToken weth;
-        uint256 boughtAmount;
-    }
-
-    // solhint-disable no-empty-blocks
-    /// @dev Payable fallback to receive ETH from uniswap.
-    function ()
-        external
-        payable
-    {}
-
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded "from" token address.
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // State memory object to avoid stack overflows.
-        TransferState memory state;
-        // Decode the bridge data to get the `fromTokenAddress`.
-        (address fromTokenAddress) = abi.decode(bridgeData, (address));
-
-        // Just transfer the tokens if they're the same.
-        if (fromTokenAddress == toTokenAddress) {
-            LibERC20Token.transfer(fromTokenAddress, to, amount);
-            return BRIDGE_SUCCESS;
-        }
-
-        // Get the exchange for the token pair.
-        state.exchange = _getUniswapExchangeForTokenPair(
-            fromTokenAddress,
-            toTokenAddress
-        );
-        // Get our balance of `fromTokenAddress` token.
-        state.fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        // Get the weth contract.
-        state.weth = IEtherToken(_getWethAddress());
-
-        // Convert from WETH to a token.
-        if (fromTokenAddress == address(state.weth)) {
-            // Unwrap the WETH.
-            state.weth.withdraw(state.fromTokenBalance);
-            // Buy as much of `toTokenAddress` token with ETH as possible and
-            // transfer it to `to`.
-            state.boughtAmount = state.exchange.ethToTokenTransferInput.value(state.fromTokenBalance)(
-                // Minimum buy amount.
-                amount,
-                // Expires after this block.
-                block.timestamp,
-                // Recipient is `to`.
-                to
-            );
-
-        // Convert from a token to WETH.
-        } else if (toTokenAddress == address(state.weth)) {
-            // Grant the exchange an allowance.
-            _grantExchangeAllowance(state.exchange, fromTokenAddress, state.fromTokenBalance);
-            // Buy as much ETH with `fromTokenAddress` token as possible.
-            state.boughtAmount = state.exchange.tokenToEthSwapInput(
-                // Sell all tokens we hold.
-                state.fromTokenBalance,
-                // Minimum buy amount.
-                amount,
-                // Expires after this block.
-                block.timestamp
-            );
-            // Wrap the ETH.
-            state.weth.deposit.value(state.boughtAmount)();
-            // Transfer the WETH to `to`.
-            IEtherToken(toTokenAddress).transfer(to, state.boughtAmount);
-
-        // Convert from one token to another.
-        } else {
-            // Grant the exchange an allowance.
-            _grantExchangeAllowance(state.exchange, fromTokenAddress, state.fromTokenBalance);
-            // Buy as much `toTokenAddress` token with `fromTokenAddress` token
-            // and transfer it to `to`.
-            state.boughtAmount = state.exchange.tokenToTokenTransferInput(
-                // Sell all tokens we hold.
-                state.fromTokenBalance,
-                // Minimum buy amount.
-                amount,
-                // Must buy at least 1 intermediate ETH.
-                1,
-                // Expires after this block.
-                block.timestamp,
-                // Recipient is `to`.
-                to,
-                // Convert to `toTokenAddress`.
-                toTokenAddress
-            );
-        }
-
-        emit ERC20BridgeTransfer(
-            fromTokenAddress,
-            toTokenAddress,
-            state.fromTokenBalance,
-            state.boughtAmount,
-            from,
-            to
-        );
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-
-    /// @dev Grants an unlimited allowance to the exchange for its token
-    ///      on behalf of this contract.
-    /// @param exchange The Uniswap token exchange.
-    /// @param tokenAddress The token address for the exchange.
-    /// @param minimumAllowance The minimum necessary allowance.
-    function _grantExchangeAllowance(
-        IUniswapExchange exchange,
-        address tokenAddress,
-        uint256 minimumAllowance
-    )
-        private
-    {
-        LibERC20Token.approveIfBelow(
-            tokenAddress,
-            address(exchange),
-            minimumAllowance
-        );
-    }
-
-    /// @dev Retrieves the uniswap exchange for a given token pair.
-    ///      In the case of a WETH-token exchange, this will be the non-WETH token.
-    ///      In th ecase of a token-token exchange, this will be the first token.
-    /// @param fromTokenAddress The address of the token we are converting from.
-    /// @param toTokenAddress The address of the token we are converting to.
-    /// @return exchange The uniswap exchange.
-    function _getUniswapExchangeForTokenPair(
-        address fromTokenAddress,
-        address toTokenAddress
-    )
-        private
-        view
-        returns (IUniswapExchange exchange)
-    {
-        address exchangeTokenAddress = fromTokenAddress;
-        // Whichever isn't WETH is the exchange token.
-        if (fromTokenAddress == _getWethAddress()) {
-            exchangeTokenAddress = toTokenAddress;
-        }
-        exchange = IUniswapExchange(
-            IUniswapExchangeFactory(_getUniswapExchangeFactoryAddress())
-            .getExchange(exchangeTokenAddress)
-        );
-        require(address(exchange) != address(0), "NO_UNISWAP_EXCHANGE_FOR_TOKEN");
-        return exchange;
-    }
-}

contracts/asset-proxy/contracts/src/bridges/UniswapV2Bridge.sol

@@ -1,135 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
-import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
-import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
-import "@0x/contracts-utils/contracts/src/LibAddressArray.sol";
-import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
-import "../interfaces/IUniswapV2Router01.sol";
-import "../interfaces/IERC20Bridge.sol";
-
-
-// solhint-disable space-after-comma
-// solhint-disable not-rely-on-time
-contract UniswapV2Bridge is
-    IERC20Bridge,
-    IWallet,
-    DeploymentConstants
-{
-    struct TransferState {
-        address[] path;
-        uint256 fromTokenBalance;
-    }
-
-    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
-    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
-    ///      token encoded in the bridge data.
-    /// @param toTokenAddress The token to buy and transfer to `to`.
-    /// @param from The maker (this contract).
-    /// @param to The recipient of the bought tokens.
-    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
-    /// @param bridgeData The abi-encoded path of token addresses. Last element must be toTokenAddress
-    /// @return success The magic bytes if successful.
-    function bridgeTransferFrom(
-        address toTokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success)
-    {
-        // hold variables to get around stack depth limitations
-        TransferState memory state;
-
-        // Decode the bridge data to get the `fromTokenAddress`.
-        // solhint-disable indent
-        state.path = abi.decode(bridgeData, (address[]));
-        // solhint-enable indent
-
-        require(state.path.length >= 2, "UniswapV2Bridge/PATH_LENGTH_MUST_BE_AT_LEAST_TWO");
-        require(state.path[state.path.length - 1] == toTokenAddress, "UniswapV2Bridge/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN");
-
-        // Just transfer the tokens if they're the same.
-        if (state.path[0] == toTokenAddress) {
-            LibERC20Token.transfer(state.path[0], to, amount);
-            return BRIDGE_SUCCESS;
-        }
-
-        // Get our balance of `fromTokenAddress` token.
-        state.fromTokenBalance = IERC20Token(state.path[0]).balanceOf(address(this));
-
-        // Grant the Uniswap router an allowance.
-        LibERC20Token.approveIfBelow(
-            state.path[0],
-            _getUniswapV2Router01Address(),
-            state.fromTokenBalance
-        );
-
-        // Buy as much `toTokenAddress` token with `fromTokenAddress` token
-        // and transfer it to `to`.
-        IUniswapV2Router01 router = IUniswapV2Router01(_getUniswapV2Router01Address());
-        uint[] memory amounts = router.swapExactTokensForTokens(
-             // Sell all tokens we hold.
-            state.fromTokenBalance,
-             // Minimum buy amount.
-            amount,
-            // Convert `fromTokenAddress` to `toTokenAddress`.
-            state.path,
-            // Recipient is `to`.
-            to,
-            // Expires after this block.
-            block.timestamp
-        );
-
-        emit ERC20BridgeTransfer(
-            // input token
-            state.path[0],
-            // output token
-            toTokenAddress,
-            // input token amount
-            state.fromTokenBalance,
-            // output token amount
-            amounts[amounts.length - 1],
-            from,
-            to
-        );
-
-        return BRIDGE_SUCCESS;
-    }
-
-    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
-    ///      and sign for itself in orders. Always succeeds.
-    /// @return magicValue Success bytes, always.
-    function isValidSignature(
-        bytes32,
-        bytes calldata
-    )
-        external
-        view
-        returns (bytes4 magicValue)
-    {
-        return LEGACY_WALLET_MAGIC_VALUE;
-    }
-}

contracts/asset-proxy/contracts/src/interfaces/IAssetData.sol

@@ -1,88 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-// solhint-disable
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-
-// @dev Interface of the asset proxy's assetData.
-// The asset proxies take an ABI encoded `bytes assetData` as argument.
-// This argument is ABI encoded as one of the methods of this interface.
-interface IAssetData {
-
-    /// @dev Function signature for encoding ERC20 assetData.
-    /// @param tokenAddress Address of ERC20Token contract.
-    function ERC20Token(address tokenAddress)
-        external;
-
-    /// @dev Function signature for encoding ERC721 assetData.
-    /// @param tokenAddress Address of ERC721 token contract.
-    /// @param tokenId Id of ERC721 token to be transferred.
-    function ERC721Token(
-        address tokenAddress,
-        uint256 tokenId
-    )
-        external;
-
-    /// @dev Function signature for encoding ERC1155 assetData.
-    /// @param tokenAddress Address of ERC1155 token contract.
-    /// @param tokenIds Array of ids of tokens to be transferred.
-    /// @param values Array of values that correspond to each token id to be transferred.
-    ///        Note that each value will be multiplied by the amount being filled in the order before transferring.
-    /// @param callbackData Extra data to be passed to receiver's `onERC1155Received` callback function.
-    function ERC1155Assets(
-        address tokenAddress,
-        uint256[] calldata tokenIds,
-        uint256[] calldata values,
-        bytes calldata callbackData
-    )
-        external;
-
-    /// @dev Function signature for encoding MultiAsset assetData.
-    /// @param values Array of amounts that correspond to each asset to be transferred.
-    ///        Note that each value will be multiplied by the amount being filled in the order before transferring.
-    /// @param nestedAssetData Array of assetData fields that will be be dispatched to their correspnding AssetProxy contract.
-    function MultiAsset(
-        uint256[] calldata values,
-        bytes[] calldata nestedAssetData
-    )
-        external;
-
-    /// @dev Function signature for encoding StaticCall assetData.
-    /// @param staticCallTargetAddress Address that will execute the staticcall.
-    /// @param staticCallData Data that will be executed via staticcall on the staticCallTargetAddress.
-    /// @param expectedReturnDataHash Keccak-256 hash of the expected staticcall return data.
-    function StaticCall(
-        address staticCallTargetAddress,
-        bytes calldata staticCallData,
-        bytes32 expectedReturnDataHash
-    )
-        external;
-
-    /// @dev Function signature for encoding ERC20Bridge assetData.
-    /// @param tokenAddress Address of token to transfer.
-    /// @param bridgeAddress Address of the bridge contract.
-    /// @param bridgeData Arbitrary data to be passed to the bridge contract.
-    function ERC20Bridge(
-        address tokenAddress,
-        address bridgeAddress,
-        bytes calldata bridgeData
-    )
-        external;
-}

contracts/asset-proxy/contracts/src/interfaces/IAssetProxy.sol

@@ -1,43 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-contract IAssetProxy {
-
-    /// @dev Transfers assets. Either succeeds or throws.
-    /// @param assetData Byte array encoded for the respective asset proxy.
-    /// @param from Address to transfer asset from.
-    /// @param to Address to transfer asset to.
-    /// @param amount Amount of asset to transfer.
-    function transferFrom(
-        bytes calldata assetData,
-        address from,
-        address to,
-        uint256 amount
-    )
-        external;
-    
-    /// @dev Gets the proxy id associated with the proxy address.
-    /// @return Proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4);
-}

contracts/asset-proxy/contracts/src/interfaces/IAssetProxyDispatcher.sol

@@ -1,43 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-contract IAssetProxyDispatcher {
-
-    // Logs registration of new asset proxy
-    event AssetProxyRegistered(
-        bytes4 id,              // Id of new registered AssetProxy.
-        address assetProxy      // Address of new registered AssetProxy.
-    );
-
-    /// @dev Registers an asset proxy to its asset proxy id.
-    ///      Once an asset proxy is registered, it cannot be unregistered.
-    /// @param assetProxy Address of new asset proxy to register.
-    function registerAssetProxy(address assetProxy)
-        external;
-
-    /// @dev Gets an asset proxy.
-    /// @param assetProxyId Id of the asset proxy.
-    /// @return The asset proxy registered to assetProxyId. Returns 0x0 if no proxy is registered.
-    function getAssetProxy(bytes4 assetProxyId)
-        external
-        view
-        returns (address);
-}

contracts/asset-proxy/contracts/src/interfaces/IAuthorizable.sol

@@ -1,64 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-utils/contracts/src/interfaces/IOwnable.sol";
-
-
-contract IAuthorizable is
-    IOwnable
-{
-    // Event logged when a new address is authorized.
-    event AuthorizedAddressAdded(
-        address indexed target,
-        address indexed caller
-    );
-
-    // Event logged when a currently authorized address is unauthorized.
-    event AuthorizedAddressRemoved(
-        address indexed target,
-        address indexed caller
-    );
-
-    /// @dev Authorizes an address.
-    /// @param target Address to authorize.
-    function addAuthorizedAddress(address target)
-        external;
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    function removeAuthorizedAddress(address target)
-        external;
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    /// @param index Index of target in authorities array.
-    function removeAuthorizedAddressAtIndex(
-        address target,
-        uint256 index
-    )
-        external;
-
-    /// @dev Gets all authorized addresses.
-    /// @return Array of authorized addresses.
-    function getAuthorizedAddresses()
-        external
-        view
-        returns (address[] memory);
-}

contracts/asset-proxy/contracts/src/interfaces/IBalancerPool.sol

@@ -1,39 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IBalancerPool {
-    /// @dev Sell `tokenAmountIn` of `tokenIn` and receive `tokenOut`.
-    /// @param tokenIn The token being sold
-    /// @param tokenAmountIn The amount of `tokenIn` to sell.
-    /// @param tokenOut The token being bought.
-    /// @param minAmountOut The minimum amount of `tokenOut` to buy.
-    /// @param maxPrice The maximum value for `spotPriceAfter`.
-    /// @return tokenAmountOut The amount of `tokenOut` bought.
-    /// @return spotPriceAfter The new marginal spot price of the given
-    ///         token pair for this pool.
-    function swapExactAmountIn(
-        address tokenIn,
-        uint tokenAmountIn,
-        address tokenOut,
-        uint minAmountOut,
-        uint maxPrice
-    ) external returns (uint tokenAmountOut, uint spotPriceAfter);
-}

contracts/asset-proxy/contracts/src/interfaces/IBancorNetwork.sol

@@ -1,38 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-contract IContractRegistry {
-    function addressOf(
-        bytes32 contractName
-    ) external returns(address);
-}
-
-
-contract IBancorNetwork {
-    function convertByPath(
-        address[] calldata _path,
-        uint256 _amount,
-        uint256 _minReturn,
-        address _beneficiary,
-        address _affiliateAccount,
-        uint256 _affiliateFee
-    ) external payable returns (uint256);
-}

contracts/asset-proxy/contracts/src/interfaces/IChai.sol

@@ -1,66 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-
-
-contract PotLike {
-    function chi() external returns (uint256);
-    function rho() external returns (uint256);
-    function drip() external returns (uint256);
-    function join(uint256) external;
-    function exit(uint256) external;
-}
-
-
-// The actual Chai contract can be found here: https://github.com/dapphub/chai
-contract IChai is
-    IERC20Token
-{
-    /// @dev Withdraws Dai owned by `src`
-    /// @param src Address that owns Dai.
-    /// @param wad Amount of Dai to withdraw.
-    function draw(
-        address src,
-        uint256 wad
-    )
-        external;
-
-    /// @dev Queries Dai balance of Chai holder.
-    /// @param usr Address of Chai holder.
-    /// @return Dai balance.
-    function dai(address usr)
-        external
-        returns (uint256);
-
-    /// @dev Queries the Pot contract used by the Chai contract.
-    function pot()
-        external
-        returns (PotLike);
-
-    /// @dev Deposits Dai in exchange for Chai
-    /// @param dst Address to receive Chai.
-    /// @param wad Amount of Dai to deposit.
-    function join(
-        address dst,
-        uint256 wad
-    )
-        external;
-}

contracts/asset-proxy/contracts/src/interfaces/ICurve.sol

@@ -1,70 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-// solhint-disable func-name-mixedcase
-interface ICurve {
-
-    /// @dev Sell `sellAmount` of `fromToken` token and receive `toToken` token.
-    ///      This function exists on later versions of Curve (USDC/DAI/USDT)
-    /// @param i The token index being sold.
-    /// @param j The token index being bought.
-    /// @param sellAmount The amount of token being bought.
-    /// @param minBuyAmount The minimum buy amount of the token being bought.
-    function exchange_underlying(
-        int128 i,
-        int128 j,
-        uint256 sellAmount,
-        uint256 minBuyAmount
-    )
-        external;
-
-    /// @dev Get the amount of `toToken` by selling `sellAmount` of `fromToken`
-    /// @param i The token index being sold.
-    /// @param j The token index being bought.
-    /// @param sellAmount The amount of token being bought.
-    function get_dy_underlying(
-        int128 i,
-        int128 j,
-        uint256 sellAmount
-    )
-        external
-        returns (uint256 dy);
-
-    /// @dev Get the amount of `fromToken` by buying `buyAmount` of `toToken`
-    /// @param i The token index being sold.
-    /// @param j The token index being bought.
-    /// @param buyAmount The amount of token being bought.
-    function get_dx_underlying(
-        int128 i,
-        int128 j,
-        uint256 buyAmount
-    )
-        external
-        returns (uint256 dx);
-
-    /// @dev Get the underlying token address from the token index
-    /// @param i The token index.
-    function underlying_coins(
-        int128 i
-    )
-        external
-        returns (address tokenAddress);
-}

contracts/asset-proxy/contracts/src/interfaces/IDydx.sol

@@ -1,192 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-
-interface IDydx {
-
-    /// @dev Represents the unique key that specifies an account
-    struct AccountInfo {
-        address owner;  // The address that owns the account
-        uint256 number; // A nonce that allows a single address to control many accounts
-    }
-
-    enum ActionType {
-        Deposit,   // supply tokens
-        Withdraw,  // borrow tokens
-        Transfer,  // transfer balance between accounts
-        Buy,       // buy an amount of some token (externally)
-        Sell,      // sell an amount of some token (externally)
-        Trade,     // trade tokens against another account
-        Liquidate, // liquidate an undercollateralized or expiring account
-        Vaporize,  // use excess tokens to zero-out a completely negative account
-        Call       // send arbitrary data to an address
-    }
-
-    /// @dev Arguments that are passed to Solo in an ordered list as part of a single operation.
-    /// Each ActionArgs has an actionType which specifies which action struct that this data will be
-    /// parsed into before being processed.
-    struct ActionArgs {
-        ActionType actionType;
-        uint256 accountIdx;
-        AssetAmount amount;
-        uint256 primaryMarketId;
-        uint256 secondaryMarketId;
-        address otherAddress;
-        uint256 otherAccountIdx;
-        bytes data;
-    }
-
-    enum AssetDenomination {
-        Wei, // the amount is denominated in wei
-        Par  // the amount is denominated in par
-    }
-
-    enum AssetReference {
-        Delta, // the amount is given as a delta from the current value
-        Target // the amount is given as an exact number to end up at
-    }
-
-    struct AssetAmount {
-        bool sign; // true if positive
-        AssetDenomination denomination;
-        AssetReference ref;
-        uint256 value;
-    }
-
-    struct D256 {
-        uint256 value;
-    }
-
-    struct Value {
-        uint256 value;
-    }
-
-    struct Price {
-        uint256 value;
-    }
-
-    struct OperatorArg {
-        address operator;
-        bool trusted;
-    }
-
-    /// @dev The global risk parameters that govern the health and security of the system
-    struct RiskParams {
-        // Required ratio of over-collateralization
-        D256 marginRatio;
-        // Percentage penalty incurred by liquidated accounts
-        D256 liquidationSpread;
-        // Percentage of the borrower's interest fee that gets passed to the suppliers
-        D256 earningsRate;
-        // The minimum absolute borrow value of an account
-        // There must be sufficient incentivize to liquidate undercollateralized accounts
-        Value minBorrowedValue;
-    }
-
-    /// @dev The main entry-point to Solo that allows users and contracts to manage accounts.
-    ///      Take one or more actions on one or more accounts. The msg.sender must be the owner or
-    ///      operator of all accounts except for those being liquidated, vaporized, or traded with.
-    ///      One call to operate() is considered a singular "operation". Account collateralization is
-    ///      ensured only after the completion of the entire operation.
-    /// @param  accounts  A list of all accounts that will be used in this operation. Cannot contain
-    ///                   duplicates. In each action, the relevant account will be referred-to by its
-    ///                   index in the list.
-    /// @param  actions   An ordered list of all actions that will be taken in this operation. The
-    ///                   actions will be processed in order.
-    function operate(
-        AccountInfo[] calldata accounts,
-        ActionArgs[] calldata actions
-    )
-        external;
-
-    // @dev Approves/disapproves any number of operators. An operator is an external address that has the
-    //      same permissions to manipulate an account as the owner of the account. Operators are simply
-    //      addresses and therefore may either be externally-owned Ethereum accounts OR smart contracts.
-    //      Operators are also able to act as AutoTrader contracts on behalf of the account owner if the
-    //      operator is a smart contract and implements the IAutoTrader interface.
-    // @param args A list of OperatorArgs which have an address and a boolean. The boolean value
-    //        denotes whether to approve (true) or revoke approval (false) for that address.
-    function setOperators(OperatorArg[] calldata args) external;
-
-    /// @dev Return true if a particular address is approved as an operator for an owner's accounts.
-    ///      Approved operators can act on the accounts of the owner as if it were the operator's own.
-    /// @param owner The owner of the accounts
-    /// @param operator The possible operator
-    /// @return isLocalOperator True if operator is approved for owner's accounts
-    function getIsLocalOperator(
-        address owner,
-        address operator
-    )
-        external
-        view
-        returns (bool isLocalOperator);
-
-    /// @dev Get the ERC20 token address for a market.
-    /// @param marketId The market to query
-    /// @return tokenAddress The token address
-    function getMarketTokenAddress(
-        uint256 marketId
-    )
-        external
-        view
-        returns (address tokenAddress);
-
-    /// @dev Get all risk parameters in a single struct.
-    /// @return riskParams All global risk parameters
-    function getRiskParams()
-        external
-        view
-        returns (RiskParams memory riskParams);
-
-    /// @dev Get the price of the token for a market.
-    /// @param marketId The market to query
-    /// @return price The price of each atomic unit of the token
-    function getMarketPrice(
-        uint256 marketId
-    )
-        external
-        view
-        returns (Price memory price);
-
-    /// @dev Get the margin premium for a market. A margin premium makes it so that any positions that
-    ///      include the market require a higher collateralization to avoid being liquidated.
-    /// @param  marketId  The market to query
-    /// @return premium The market's margin premium
-    function getMarketMarginPremium(uint256 marketId)
-        external
-        view
-        returns (D256 memory premium);
-
-    /// @dev Get the total supplied and total borrowed values of an account adjusted by the marginPremium
-    ///      of each market. Supplied values are divided by (1 + marginPremium) for each market and
-    ///      borrowed values are multiplied by (1 + marginPremium) for each market. Comparing these
-    ///      adjusted values gives the margin-ratio of the account which will be compared to the global
-    ///      margin-ratio when determining if the account can be liquidated.
-    /// @param account The account to query
-    /// @return supplyValue The supplied value of the account (adjusted for marginPremium)
-    /// @return borrowValue The borrowed value of the account (adjusted for marginPremium)
-    function getAdjustedAccountValues(
-        AccountInfo calldata account
-    )
-        external
-        view
-        returns (Value memory supplyValue, Value memory borrowValue);
-}

contracts/asset-proxy/contracts/src/interfaces/IDydxBridge.sol

@@ -1,42 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IDydxBridge {
-
-    /// @dev This is the subset of `IDydx.ActionType` that are supported by the bridge.
-    enum BridgeActionType {
-        Deposit,                    // Deposit tokens into dydx account.
-        Withdraw                    // Withdraw tokens from dydx account.
-    }
-
-    struct BridgeAction {
-        BridgeActionType actionType;            // Action to run on dydx account.
-        uint256 accountIdx;                     // Index in `BridgeData.accountNumbers` for this action.
-        uint256 marketId;                       // Market to operate on.
-        uint256 conversionRateNumerator;        // Optional. If set, transfer amount is scaled by (conversionRateNumerator/conversionRateDenominator).
-        uint256 conversionRateDenominator;      // Optional. If set, transfer amount is scaled by (conversionRateNumerator/conversionRateDenominator).
-    }
-
-    struct BridgeData {
-        uint256[] accountNumbers;               // Account number used to identify the owner's specific account.
-        BridgeAction[] actions;                 // Actions to carry out on the owner's accounts.
-    }
-}

contracts/asset-proxy/contracts/src/interfaces/IERC20Bridge.sol

@@ -1,59 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-contract IERC20Bridge {
-
-    /// @dev Result of a successful bridge call.
-    bytes4 constant internal BRIDGE_SUCCESS = 0xdc1600f3;
-
-    /// @dev Emitted when a trade occurs.
-    /// @param inputToken The token the bridge is converting from.
-    /// @param outputToken The token the bridge is converting to.
-    /// @param inputTokenAmount Amount of input token.
-    /// @param outputTokenAmount Amount of output token.
-    /// @param from The `from` address in `bridgeTransferFrom()`
-    /// @param to The `to` address in `bridgeTransferFrom()`
-    event ERC20BridgeTransfer(
-        address inputToken,
-        address outputToken,
-        uint256 inputTokenAmount,
-        uint256 outputTokenAmount,
-        address from,
-        address to
-    );
-
-    /// @dev Transfers `amount` of the ERC20 `tokenAddress` from `from` to `to`.
-    /// @param tokenAddress The address of the ERC20 token to transfer.
-    /// @param from Address to transfer asset from.
-    /// @param to Address to transfer asset to.
-    /// @param amount Amount of asset to transfer.
-    /// @param bridgeData Arbitrary asset data needed by the bridge contract.
-    /// @return success The magic bytes `0xdc1600f3` if successful.
-    function bridgeTransferFrom(
-        address tokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success);
-}

contracts/asset-proxy/contracts/src/interfaces/IEth2Dai.sol

@@ -1,38 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IEth2Dai {
-
-    /// @dev Sell `sellAmount` of `fromToken` token and receive `toToken` token.
-    /// @param fromToken The token being sold.
-    /// @param sellAmount The amount of `fromToken` token being sold.
-    /// @param toToken The token being bought.
-    /// @param minFillAmount Minimum amount of `toToken` token to buy.
-    /// @return fillAmount Amount of `toToken` bought.
-    function sellAllAmount(
-        address fromToken,
-        uint256 sellAmount,
-        address toToken,
-        uint256 minFillAmount
-    )
-        external
-        returns (uint256 fillAmount);
-}

contracts/asset-proxy/contracts/src/interfaces/IGasToken.sol

@@ -1,40 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.15;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-
-
-contract IGasToken is IERC20Token {
-
-    /// @dev Frees up to `value` sub-tokens
-    /// @param value The amount of tokens to free
-    /// @return How many tokens were freed
-    function freeUpTo(uint256 value) external returns (uint256 freed);
-
-    /// @dev Frees up to `value` sub-tokens owned by `from`
-    /// @param from The owner of tokens to spend
-    /// @param value The amount of tokens to free
-    /// @return How many tokens were freed
-    function freeFromUpTo(address from, uint256 value) external returns (uint256 freed);
-
-    /// @dev Mints `value` amount of tokens
-    /// @param value The amount of tokens to mint
-    function mint(uint256 value) external;
-}

contracts/asset-proxy/contracts/src/interfaces/IKyberNetworkProxy.sol

@@ -1,72 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IKyberNetworkProxy {
-
-    /// @dev Sells `sellTokenAddress` tokens for `buyTokenAddress` tokens.
-    /// @param sellTokenAddress Token to sell.
-    /// @param sellAmount Amount of tokens to sell.
-    /// @param buyTokenAddress Token to buy.
-    /// @param recipientAddress Address to send bought tokens to.
-    /// @param maxBuyTokenAmount A limit on the amount of tokens to buy.
-    /// @param minConversionRate The minimal conversion rate. If actual rate
-    ///        is lower, trade is canceled.
-    /// @param walletId The wallet ID to send part of the fees
-    /// @return boughtAmount Amount of tokens bought.
-    function trade(
-        address sellTokenAddress,
-        uint256 sellAmount,
-        address buyTokenAddress,
-        address payable recipientAddress,
-        uint256 maxBuyTokenAmount,
-        uint256 minConversionRate,
-        address walletId
-    )
-        external
-        payable
-        returns (uint256 boughtAmount);
-
-    /// @dev Sells `sellTokenAddress` tokens for `buyTokenAddress` tokens
-    /// using a hint for the reserve.
-    /// @param sellTokenAddress Token to sell.
-    /// @param sellAmount Amount of tokens to sell.
-    /// @param buyTokenAddress Token to buy.
-    /// @param recipientAddress Address to send bought tokens to.
-    /// @param maxBuyTokenAmount A limit on the amount of tokens to buy.
-    /// @param minConversionRate The minimal conversion rate. If actual rate
-    ///        is lower, trade is canceled.
-    /// @param walletId The wallet ID to send part of the fees
-    /// @param hint The hint for the selective inclusion (or exclusion) of reserves
-    /// @return boughtAmount Amount of tokens bought.
-    function tradeWithHint(
-        address sellTokenAddress,
-        uint256 sellAmount,
-        address buyTokenAddress,
-        address payable recipientAddress,
-        uint256 maxBuyTokenAmount,
-        uint256 minConversionRate,
-        address payable walletId,
-        bytes calldata hint
-    )
-        external
-        payable
-        returns (uint256 boughtAmount);
-}

contracts/asset-proxy/contracts/src/interfaces/IMStable.sol

@@ -1,32 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IMStable {
-
-    function swap(
-        address _input,
-        address _output,
-        uint256 _quantity,
-        address _recipient
-    )
-        external
-        returns (uint256 output);
-}

contracts/asset-proxy/contracts/src/interfaces/IMooniswap.sol

@@ -1,40 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IMooniswapRegistry {
-
-    function pools(address token1, address token2) external view returns(address);
-}
-
-
-interface IMooniswap {
-
-    function swap(
-        address fromToken,
-        address destToken,
-        uint256 amount,
-        uint256 minReturn,
-        address referral
-    )
-        external
-        payable
-        returns(uint256 returnAmount);
-}

contracts/asset-proxy/contracts/src/interfaces/IShell.sol

@@ -1,34 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IShell {
-
-    function originSwap(
-        address from,
-        address to,
-        uint256 fromAmount,
-        uint256 minTargetAmount,
-        uint256 deadline
-    )
-        external
-        returns (uint256 toAmount);
-}
-

contracts/asset-proxy/contracts/src/interfaces/IUniswapExchange.sol

@@ -1,70 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IUniswapExchange {
-
-    /// @dev Buys at least `minTokensBought` tokens with ETH and transfer them
-    ///      to `recipient`.
-    /// @param minTokensBought The minimum number of tokens to buy.
-    /// @param deadline Time when this order expires.
-    /// @param recipient Who to transfer the tokens to.
-    /// @return tokensBought Amount of tokens bought.
-    function ethToTokenTransferInput(
-        uint256 minTokensBought,
-        uint256 deadline,
-        address recipient
-    )
-        external
-        payable
-        returns (uint256 tokensBought);
-
-    /// @dev Buys at least `minEthBought` ETH with tokens.
-    /// @param tokensSold Amount of tokens to sell.
-    /// @param minEthBought The minimum amount of ETH to buy.
-    /// @param deadline Time when this order expires.
-    /// @return ethBought Amount of tokens bought.
-    function tokenToEthSwapInput(
-        uint256 tokensSold,
-        uint256 minEthBought,
-        uint256 deadline
-    )
-        external
-        returns (uint256 ethBought);
-
-    /// @dev Buys at least `minTokensBought` tokens with the exchange token
-    ///      and transfer them to `recipient`.
-    /// @param minTokensBought The minimum number of tokens to buy.
-    /// @param minEthBought The minimum amount of intermediate ETH to buy.
-    /// @param deadline Time when this order expires.
-    /// @param recipient Who to transfer the tokens to.
-    /// @param toTokenAddress The token being bought.
-    /// @return tokensBought Amount of tokens bought.
-    function tokenToTokenTransferInput(
-        uint256 tokensSold,
-        uint256 minTokensBought,
-        uint256 minEthBought,
-        uint256 deadline,
-        address recipient,
-        address toTokenAddress
-    )
-        external
-        returns (uint256 tokensBought);
-}

contracts/asset-proxy/contracts/src/interfaces/IUniswapExchangeFactory.sol

@@ -1,32 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./IUniswapExchange.sol";
-
-
-interface IUniswapExchangeFactory {
-
-    /// @dev Get the exchange for a token.
-    /// @param tokenAddress The address of the token contract.
-    function getExchange(address tokenAddress)
-        external
-        view
-        returns (address);
-}

contracts/asset-proxy/contracts/src/interfaces/IUniswapV2Router01.sol

@@ -1,40 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-
-interface IUniswapV2Router01 {
-
-    /// @dev Swaps an exact amount of input tokens for as many output tokens as possible, along the route determined by the path.
-    ///      The first element of path is the input token, the last is the output token, and any intermediate elements represent
-    ///      intermediate pairs to trade through (if, for example, a direct pair does not exist).
-    /// @param amountIn The amount of input tokens to send.
-    /// @param amountOutMin The minimum amount of output tokens that must be received for the transaction not to revert.
-    /// @param path An array of token addresses. path.length must be >= 2. Pools for each consecutive pair of addresses must exist and have liquidity.
-    /// @param to Recipient of the output tokens.
-    /// @param deadline Unix timestamp after which the transaction will revert.
-    /// @return amounts The input token amount and all subsequent output token amounts.
-    function swapExactTokensForTokens(
-        uint amountIn,
-        uint amountOutMin,
-        address[] calldata path,
-        address to,
-        uint deadline
-    ) external returns (uint[] memory amounts);
-}

contracts/asset-proxy/contracts/test/TestBancorBridge.sol

@@ -1,247 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "@0x/contracts-utils/contracts/src/LibAddressArray.sol";
-import "../src/bridges/BancorBridge.sol";
-import "../src/interfaces/IBancorNetwork.sol";
-
-
-contract TestEventsRaiser {
-
-    event TokenTransfer(
-        address token,
-        address from,
-        address to,
-        uint256 amount
-    );
-
-    event TokenApprove(
-        address spender,
-        uint256 allowance
-    );
-
-    event ConvertByPathInput(
-        uint amountIn,
-        uint amountOutMin,
-        address toTokenAddress,
-        address to,
-        address feeRecipient,
-        uint256 feeAmount
-    );
-
-    function raiseTokenTransfer(
-        address from,
-        address to,
-        uint256 amount
-    )
-        external
-    {
-        emit TokenTransfer(
-            msg.sender,
-            from,
-            to,
-            amount
-        );
-    }
-
-    function raiseTokenApprove(address spender, uint256 allowance) external {
-        emit TokenApprove(spender, allowance);
-    }
-
-    function raiseConvertByPathInput(
-        uint amountIn,
-        uint amountOutMin,
-        address toTokenAddress,
-        address to,
-        address feeRecipient,
-        uint256 feeAmount
-    ) external
-    {
-        emit ConvertByPathInput(
-            amountIn,
-            amountOutMin,
-            toTokenAddress,
-            to,
-            feeRecipient,
-            feeAmount
-        );
-    }
-}
-
-
-/// @dev A minimalist ERC20 token.
-contract TestToken {
-
-    using LibSafeMath for uint256;
-
-    mapping (address => uint256) public balances;
-    string private _nextRevertReason;
-
-    /// @dev Set the balance for `owner`.
-    function setBalance(address owner, uint256 balance)
-        external
-        payable
-    {
-        balances[owner] = balance;
-    }
-
-    /// @dev Just emits a TokenTransfer event on the caller
-    function transfer(address to, uint256 amount)
-        external
-        returns (bool)
-    {
-        TestEventsRaiser(msg.sender).raiseTokenTransfer(msg.sender, to, amount);
-        return true;
-    }
-
-    /// @dev Just emits a TokenApprove event on the caller
-    function approve(address spender, uint256 allowance)
-        external
-        returns (bool)
-    {
-        TestEventsRaiser(msg.sender).raiseTokenApprove(spender, allowance);
-        return true;
-    }
-
-    function allowance(address, address) external view returns (uint256) {
-        return 0;
-    }
-
-    /// @dev Retrieve the balance for `owner`.
-    function balanceOf(address owner)
-        external
-        view
-        returns (uint256)
-    {
-        return balances[owner];
-    }
-}
-
-
-/// @dev Mock the BancorNetwork contract
-contract TestBancorNetwork is
-    IBancorNetwork
-{
-    string private _nextRevertReason;
-
-    /// @dev Set the revert reason for `swapExactTokensForTokens`.
-    function setRevertReason(string calldata reason)
-        external
-    {
-        _nextRevertReason = reason;
-    }
-
-    function convertByPath(
-        address[] calldata _path,
-        uint256 _amount,
-        uint256 _minReturn,
-        address _beneficiary,
-        address _affiliateAccount,
-        uint256 _affiliateFee
-    ) external payable returns (uint256)
-    {
-        _revertIfReasonExists();
-
-        TestEventsRaiser(msg.sender).raiseConvertByPathInput(
-            // tokens sold
-            _amount,
-            // tokens bought
-            _minReturn,
-            // output token
-            _path[_path.length - 1],
-            // recipient
-            _beneficiary,
-            // fee recipient
-            _affiliateAccount,
-            // fee amount
-            _affiliateFee
-        );
-    }
-
-    function _revertIfReasonExists()
-        private
-        view
-    {
-        if (bytes(_nextRevertReason).length != 0) {
-            revert(_nextRevertReason);
-        }
-    }
-
-}
-
-
-/// @dev BancorBridge overridden to mock tokens and BancorNetwork
-contract TestBancorBridge is
-    BancorBridge,
-    TestEventsRaiser
-{
-
-    // Token address to TestToken instance.
-    mapping (address => TestToken) private _testTokens;
-    // TestRouter instance.
-    TestBancorNetwork private _testNetwork;
-
-    constructor() public {
-        _testNetwork = new TestBancorNetwork();
-    }
-
-    function setNetworkRevertReason(string calldata revertReason)
-        external
-    {
-        _testNetwork.setRevertReason(revertReason);
-    }
-
-    /// @dev Sets the balance of this contract for an existing token.
-    function setTokenBalance(address tokenAddress, uint256 balance)
-        external
-    {
-        TestToken token = _testTokens[tokenAddress];
-        token.setBalance(address(this), balance);
-    }
-
-    /// @dev Create a new token
-    /// @param tokenAddress The token address. If zero, one will be created.
-    function createToken(
-        address tokenAddress
-    )
-        external
-        returns (TestToken token)
-    {
-        token = TestToken(tokenAddress);
-        if (tokenAddress == address(0)) {
-            token = new TestToken();
-        }
-        _testTokens[address(token)] = token;
-
-        return token;
-    }
-
-    function getNetworkAddress()
-        external
-        view
-        returns (address)
-    {
-        return address(_testNetwork);
-    }
-
-}

contracts/asset-proxy/contracts/test/TestChaiBridge.sol

@@ -1,80 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "../src/bridges/ChaiBridge.sol";
-import "@0x/contracts-erc20/contracts/src/ERC20Token.sol";
-
-
-contract TestChaiDai is
-    ERC20Token
-{
-    address private constant ALWAYS_REVERT_ADDRESS = address(1);
-
-    function draw(
-        address from,
-        uint256 amount
-    )
-        external
-    {
-        if (from == ALWAYS_REVERT_ADDRESS) {
-            revert();
-        }
-        balances[msg.sender] += amount;
-    }
-}
-
-
-contract TestChaiBridge is
-    ChaiBridge
-{
-    address public testChaiDai;
-    address private constant ALWAYS_REVERT_ADDRESS = address(1);
-
-    constructor()
-        public
-    {
-        testChaiDai = address(new TestChaiDai());
-    }
-
-    function _getDaiAddress()
-        internal
-        view
-        returns (address)
-    {
-        return testChaiDai;
-    }
-
-    function _getChaiAddress()
-        internal
-        view
-        returns (address)
-    {
-        return testChaiDai;
-    }
-
-    function _getERC20BridgeProxyAddress()
-        internal
-        view
-        returns (address)
-    {
-        return msg.sender == ALWAYS_REVERT_ADDRESS ? address(0) : msg.sender;
-    }
-}

contracts/asset-proxy/contracts/test/TestDexForwarderBridge.sol

@@ -1,244 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "../src/bridges/DexForwarderBridge.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-
-
-interface ITestDexForwarderBridge {
-    event BridgeTransferFromCalled(
-        address caller,
-        uint256 inputTokenBalance,
-        address inputToken,
-        address outputToken,
-        address from,
-        address to,
-        uint256 amount
-    );
-
-    event TokenTransferCalled(
-        address from,
-        address to,
-        uint256 amount
-    );
-
-    function emitBridgeTransferFromCalled(
-        address caller,
-        uint256 inputTokenBalance,
-        address inputToken,
-        address outputToken,
-        address from,
-        address to,
-        uint256 amount
-    ) external;
-
-    function emitTokenTransferCalled(
-        address from,
-        address to,
-        uint256 amount
-    ) external;
-}
-
-
-interface ITestDexForwarderBridgeTestToken {
-
-    function transfer(address to, uint256 amount)
-        external
-        returns (bool);
-
-    function mint(address to, uint256 amount)
-        external;
-
-    function balanceOf(address owner) external view returns (uint256);
-}
-
-
-contract TestDexForwarderBridgeTestBridge {
-
-    bytes4 private _returnCode;
-    string private _revertError;
-    uint256 private _transferAmount;
-    ITestDexForwarderBridge private _testContract;
-
-    constructor(bytes4 returnCode, string memory revertError) public {
-        _testContract = ITestDexForwarderBridge(msg.sender);
-        _returnCode = returnCode;
-        _revertError = revertError;
-    }
-
-    function setTransferAmount(uint256 amount) external {
-        _transferAmount = amount;
-    }
-
-    function bridgeTransferFrom(
-        address outputToken,
-        address from,
-        address to,
-        uint256 amount,
-        bytes memory bridgeData
-    )
-        public
-        returns (bytes4 success)
-    {
-        if (bytes(_revertError).length != 0) {
-            revert(_revertError);
-        }
-        address inputToken = abi.decode(bridgeData, (address));
-        _testContract.emitBridgeTransferFromCalled(
-            msg.sender,
-            ITestDexForwarderBridgeTestToken(inputToken).balanceOf(address(this)),
-            inputToken,
-            outputToken,
-            from,
-            to,
-            amount
-        );
-        ITestDexForwarderBridgeTestToken(outputToken).mint(to, _transferAmount);
-        return _returnCode;
-    }
-}
-
-
-contract TestDexForwarderBridgeTestToken {
-
-    using LibSafeMath for uint256;
-
-    mapping(address => uint256) public balanceOf;
-    ITestDexForwarderBridge private _testContract;
-
-    constructor() public {
-        _testContract = ITestDexForwarderBridge(msg.sender);
-    }
-
-    function transfer(address to, uint256 amount)
-        external
-        returns (bool)
-    {
-        balanceOf[msg.sender] = balanceOf[msg.sender].safeSub(amount);
-        balanceOf[to] = balanceOf[to].safeAdd(amount);
-        _testContract.emitTokenTransferCalled(msg.sender, to, amount);
-        return true;
-    }
-
-    function mint(address owner, uint256 amount)
-        external
-    {
-        balanceOf[owner] = balanceOf[owner].safeAdd(amount);
-    }
-
-    function setBalance(address owner, uint256 amount)
-        external
-    {
-        balanceOf[owner] = amount;
-    }
-}
-
-
-contract TestDexForwarderBridge is
-    ITestDexForwarderBridge,
-    DexForwarderBridge
-{
-    address private AUTHORIZED_ADDRESS; // solhint-disable-line var-name-mixedcase
-
-    function setAuthorized(address authorized)
-        public
-    {
-        AUTHORIZED_ADDRESS = authorized;
-    }
-
-    function createBridge(
-        bytes4 returnCode,
-        string memory revertError
-    )
-        public
-        returns (address bridge)
-    {
-        return address(new TestDexForwarderBridgeTestBridge(returnCode, revertError));
-    }
-
-    function createToken() public returns (address token) {
-        return address(new TestDexForwarderBridgeTestToken());
-    }
-
-    function setTokenBalance(address token, address owner, uint256 amount) public {
-        TestDexForwarderBridgeTestToken(token).setBalance(owner, amount);
-    }
-
-    function setBridgeTransferAmount(address bridge, uint256 amount) public {
-        TestDexForwarderBridgeTestBridge(bridge).setTransferAmount(amount);
-    }
-
-    function emitBridgeTransferFromCalled(
-        address caller,
-        uint256 inputTokenBalance,
-        address inputToken,
-        address outputToken,
-        address from,
-        address to,
-        uint256 amount
-    )
-        public
-    {
-        emit BridgeTransferFromCalled(
-            caller,
-            inputTokenBalance,
-            inputToken,
-            outputToken,
-            from,
-            to,
-            amount
-        );
-    }
-
-    function emitTokenTransferCalled(
-        address from,
-        address to,
-        uint256 amount
-    )
-        public
-    {
-        emit TokenTransferCalled(
-            from,
-            to,
-            amount
-        );
-    }
-
-    function balanceOf(address token, address owner) public view returns (uint256) {
-        return TestDexForwarderBridgeTestToken(token).balanceOf(owner);
-    }
-
-    function _getGstAddress()
-        internal
-        view
-        returns (address gst)
-    {
-        return address(0);
-    }
-
-    function _getERC20BridgeProxyAddress()
-        internal
-        view
-        returns (address erc20BridgeProxyAddress)
-    {
-        return AUTHORIZED_ADDRESS;
-    }
-}

contracts/asset-proxy/contracts/test/TestDydxBridge.sol

@@ -1,246 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "../src/bridges/DydxBridge.sol";
-
-
-// solhint-disable no-empty-blocks
-contract TestDydxBridgeToken {
-
-    uint256 private constant INIT_HOLDER_BALANCE = 10 * 10**18; // 10 tokens
-    mapping (address => uint256) private _balances;
-
-    /// @dev Sets initial balance of token holders.
-    constructor(address[] memory holders)
-        public
-    {
-        for (uint256 i = 0; i != holders.length; ++i) {
-            _balances[holders[i]] = INIT_HOLDER_BALANCE;
-        }
-        _balances[msg.sender] = INIT_HOLDER_BALANCE;
-    }
-
-    /// @dev Basic transferFrom implementation.
-    function transferFrom(address from, address to, uint256 amount)
-        external
-        returns (bool)
-    {
-        if (_balances[from] < amount || _balances[to] + amount < _balances[to]) {
-            return false;
-        }
-        _balances[from] -= amount;
-        _balances[to] += amount;
-        return true;
-    }
-
-    /// @dev Returns balance of `holder`.
-    function balanceOf(address holder)
-        external
-        view
-        returns (uint256)
-    {
-        return _balances[holder];
-    }
-}
-
-
-// solhint-disable space-after-comma
-contract TestDydxBridge is
-    IDydx,
-    DydxBridge
-{
-
-    address private constant ALWAYS_REVERT_ADDRESS = address(1);
-    address private _testTokenAddress;
-    bool private _shouldRevertOnOperate;
-
-    event OperateAccount(
-        address owner,
-        uint256 number
-    );
-
-    event OperateAction(
-        ActionType actionType,
-        uint256 accountIdx,
-        bool amountSign,
-        AssetDenomination amountDenomination,
-        AssetReference amountRef,
-        uint256 amountValue,
-        uint256 primaryMarketId,
-        uint256 secondaryMarketId,
-        address otherAddress,
-        uint256 otherAccountId,
-        bytes data
-    );
-
-    constructor(address[] memory holders)
-        public
-    {
-        // Deploy a test token. This represents the asset being deposited/withdrawn from dydx.
-        _testTokenAddress = address(new TestDydxBridgeToken(holders));
-    }
-
-    /// @dev Simulates `operate` in dydx contract.
-    ///      Emits events so that arguments can be validated client-side.
-    function operate(
-        AccountInfo[] calldata accounts,
-        ActionArgs[] calldata actions
-    )
-        external
-    {
-        if (_shouldRevertOnOperate) {
-            revert("TestDydxBridge/SHOULD_REVERT_ON_OPERATE");
-        }
-
-        for (uint i = 0; i < accounts.length; ++i) {
-            emit OperateAccount(
-                accounts[i].owner,
-                accounts[i].number
-            );
-        }
-
-        for (uint i = 0; i < actions.length; ++i) {
-            emit OperateAction(
-                actions[i].actionType,
-                actions[i].accountIdx,
-                actions[i].amount.sign,
-                actions[i].amount.denomination,
-                actions[i].amount.ref,
-                actions[i].amount.value,
-                actions[i].primaryMarketId,
-                actions[i].secondaryMarketId,
-                actions[i].otherAddress,
-                actions[i].otherAccountIdx,
-                actions[i].data
-            );
-
-            if (actions[i].actionType == IDydx.ActionType.Withdraw) {
-                require(
-                    IERC20Token(_testTokenAddress).transferFrom(
-                        address(this),
-                        actions[i].otherAddress,
-                        actions[i].amount.value
-                    ),
-                    "TestDydxBridge/WITHDRAW_FAILED"
-                );
-            } else if (actions[i].actionType == IDydx.ActionType.Deposit) {
-                require(
-                    IERC20Token(_testTokenAddress).transferFrom(
-                        actions[i].otherAddress,
-                        address(this),
-                        actions[i].amount.value
-                    ),
-                    "TestDydxBridge/DEPOSIT_FAILED"
-                );
-            } else {
-                revert("TestDydxBridge/UNSUPPORTED_ACTION");
-            }
-        }
-    }
-
-    /// @dev If `true` then subsequent calls to `operate` will revert.
-    function setRevertOnOperate(bool shouldRevert)
-        external
-    {
-        _shouldRevertOnOperate = shouldRevert;
-    }
-
-    /// @dev Returns test token.
-    function getTestToken()
-        external
-        returns (address)
-    {
-        return _testTokenAddress;
-    }
-
-    /// @dev Unused.
-    function setOperators(OperatorArg[] calldata args) external {}
-
-    /// @dev Unused.
-    function getIsLocalOperator(
-        address owner,
-        address operator
-    )
-        external
-        view
-        returns (bool isLocalOperator)
-    {}
-
-    /// @dev Unused.
-    function getMarketTokenAddress(
-        uint256 marketId
-    )
-        external
-        view
-        returns (address tokenAddress)
-    {}
-
-    /// @dev Unused.
-    function getRiskParams()
-        external
-        view
-        returns (RiskParams memory riskParams)
-    {}
-
-    /// @dev Unsused.
-    function getMarketPrice(
-        uint256 marketId
-    )
-        external
-        view
-        returns (Price memory price)
-    {}
-
-    /// @dev Unsused
-    function getMarketMarginPremium(uint256 marketId)
-        external
-        view
-        returns (IDydx.D256 memory premium)
-    {}
-
-    /// @dev Unused.
-    function getAdjustedAccountValues(
-        AccountInfo calldata account
-    )
-        external
-        view
-        returns (Value memory supplyValue, Value memory borrowValue)
-    {}
-
-    /// @dev overrides `_getDydxAddress()` from `DeploymentConstants` to return this address.
-    function _getDydxAddress()
-        internal
-        view
-        returns (address)
-    {
-        return address(this);
-    }
-
-    /// @dev overrides `_getERC20BridgeProxyAddress()` from `DeploymentConstants` for testing.
-    function _getERC20BridgeProxyAddress()
-        internal
-        view
-        returns (address)
-    {
-        return msg.sender == ALWAYS_REVERT_ADDRESS ? address(0) : msg.sender;
-    }
-}

contracts/asset-proxy/contracts/test/TestERC20Bridge.sol

@@ -1,108 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "../src/interfaces/IERC20Bridge.sol";
-
-
-/// @dev Test bridge token
-contract TestERC20BridgeToken {
-    mapping (address => uint256) private _balances;
-
-    function addBalance(address owner, int256 amount)
-        external
-    {
-        setBalance(owner, uint256(int256(balanceOf(owner)) + amount));
-    }
-
-    function setBalance(address owner, uint256 balance)
-        public
-    {
-        _balances[owner] = balance;
-    }
-
-    function balanceOf(address owner)
-        public
-        view
-        returns (uint256)
-    {
-        return _balances[owner];
-    }
-}
-
-
-/// @dev Test bridge contract.
-contract TestERC20Bridge is
-    IERC20Bridge
-{
-    TestERC20BridgeToken public testToken;
-
-    event BridgeWithdrawTo(
-        address tokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes bridgeData
-    );
-
-    constructor() public {
-        testToken = new TestERC20BridgeToken();
-    }
-
-    function setTestTokenBalance(address owner, uint256 balance)
-        external
-    {
-        testToken.setBalance(owner, balance);
-    }
-
-    function bridgeTransferFrom(
-        address tokenAddress,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4)
-    {
-        emit BridgeWithdrawTo(
-            tokenAddress,
-            from,
-            to,
-            amount,
-            bridgeData
-        );
-        // Unpack the bridgeData.
-        (
-            int256 transferAmount,
-            bytes memory revertData,
-            bytes memory returnData
-        ) = abi.decode(bridgeData, (int256, bytes, bytes));
-
-        // If `revertData` is set, revert.
-        if (revertData.length != 0) {
-            assembly { revert(add(revertData, 0x20), mload(revertData)) }
-        }
-        // Increase `to`'s balance by `transferAmount`.
-        TestERC20BridgeToken(tokenAddress).addBalance(to, transferAmount);
-        // Return `returnData`.
-        assembly { return(add(returnData, 0x20), mload(returnData)) }
-    }
-}

contracts/asset-proxy/contracts/test/TestEth2DaiBridge.sol

@@ -1,206 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "../src/bridges/Eth2DaiBridge.sol";
-import "../src/interfaces/IEth2Dai.sol";
-
-
-// solhint-disable no-simple-event-func-name
-contract TestEvents {
-
-    event TokenTransfer(
-        address token,
-        address from,
-        address to,
-        uint256 amount
-    );
-
-    event TokenApprove(
-        address token,
-        address spender,
-        uint256 allowance
-    );
-
-    function raiseTokenTransfer(
-        address from,
-        address to,
-        uint256 amount
-    )
-        external
-    {
-        emit TokenTransfer(
-            msg.sender,
-            from,
-            to,
-            amount
-        );
-    }
-
-    function raiseTokenApprove(address spender, uint256 allowance)
-        external
-    {
-        emit TokenApprove(msg.sender, spender, allowance);
-    }
-}
-
-
-/// @dev A minimalist ERC20 token.
-contract TestToken {
-
-    mapping (address => uint256) public balances;
-    string private _nextTransferRevertReason;
-    bytes private _nextTransferReturnData;
-
-    /// @dev Just calls `raiseTokenTransfer()` on the caller.
-    function transfer(address to, uint256 amount)
-        external
-        returns (bool)
-    {
-        TestEvents(msg.sender).raiseTokenTransfer(msg.sender, to, amount);
-        if (bytes(_nextTransferRevertReason).length != 0) {
-            revert(_nextTransferRevertReason);
-        }
-        bytes memory returnData = _nextTransferReturnData;
-        assembly { return(add(returnData, 0x20), mload(returnData)) }
-    }
-
-    /// @dev Set the balance for `owner`.
-    function setBalance(address owner, uint256 balance)
-        external
-    {
-        balances[owner] = balance;
-    }
-
-    /// @dev Set the behavior of the `transfer()` call.
-    function setTransferBehavior(
-        string calldata revertReason,
-        bytes calldata returnData
-    )
-        external
-    {
-        _nextTransferRevertReason = revertReason;
-        _nextTransferReturnData = returnData;
-    }
-
-    /// @dev Just calls `raiseTokenApprove()` on the caller.
-    function approve(address spender, uint256 allowance)
-        external
-        returns (bool)
-    {
-        TestEvents(msg.sender).raiseTokenApprove(spender, allowance);
-        return true;
-    }
-
-    function allowance(address, address) external view returns (uint256) {
-        return 0;
-    }
-
-    /// @dev Retrieve the balance for `owner`.
-    function balanceOf(address owner)
-        external
-        view
-        returns (uint256)
-    {
-        return balances[owner];
-    }
-}
-
-
-/// @dev Eth2DaiBridge overridden to mock tokens and
-///      implement IEth2Dai.
-contract TestEth2DaiBridge is
-    TestEvents,
-    IEth2Dai,
-    Eth2DaiBridge
-{
-    event SellAllAmount(
-        address sellToken,
-        uint256 sellTokenAmount,
-        address buyToken,
-        uint256 minimumFillAmount
-    );
-
-    mapping (address => TestToken)  public testTokens;
-    string private _nextRevertReason;
-    uint256 private _nextFillAmount;
-
-    /// @dev Create a token and set this contract's balance.
-    function createToken(uint256 balance)
-        external
-        returns (address tokenAddress)
-    {
-        TestToken token = new TestToken();
-        testTokens[address(token)] = token;
-        token.setBalance(address(this), balance);
-        return address(token);
-    }
-
-    /// @dev Set the behavior for `IEth2Dai.sellAllAmount()`.
-    function setFillBehavior(string calldata revertReason, uint256 fillAmount)
-        external
-    {
-        _nextRevertReason = revertReason;
-        _nextFillAmount = fillAmount;
-    }
-
-    /// @dev Set the behavior of a token's `transfer()`.
-    function setTransferBehavior(
-        address tokenAddress,
-        string calldata revertReason,
-        bytes calldata returnData
-    )
-        external
-    {
-        testTokens[tokenAddress].setTransferBehavior(revertReason, returnData);
-    }
-
-    /// @dev Implementation of `IEth2Dai.sellAllAmount()`
-    function sellAllAmount(
-        address sellTokenAddress,
-        uint256 sellTokenAmount,
-        address buyTokenAddress,
-        uint256 minimumFillAmount
-    )
-        external
-        returns (uint256 fillAmount)
-    {
-        emit SellAllAmount(
-            sellTokenAddress,
-            sellTokenAmount,
-            buyTokenAddress,
-            minimumFillAmount
-        );
-        if (bytes(_nextRevertReason).length != 0) {
-            revert(_nextRevertReason);
-        }
-        return _nextFillAmount;
-    }
-
-    // @dev This contract will double as the Eth2Dai contract.
-    function _getEth2DaiAddress()
-        internal
-        view
-        returns (address)
-    {
-        return address(this);
-    }
-}

contracts/asset-proxy/contracts/test/TestKyberBridge.sol

@@ -1,355 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "../src/bridges/KyberBridge.sol";
-import "../src/interfaces/IKyberNetworkProxy.sol";
-
-
-// solhint-disable no-simple-event-func-name
-interface ITestContract {
-
-    function wethWithdraw(
-        address payable ownerAddress,
-        uint256 amount
-    )
-        external;
-
-    function wethDeposit(
-        address ownerAddress
-    )
-        external
-        payable;
-
-    function tokenTransfer(
-        address ownerAddress,
-        address recipientAddress,
-        uint256 amount
-    )
-        external
-        returns (bool success);
-
-    function tokenApprove(
-        address ownerAddress,
-        address spenderAddress,
-        uint256 allowance
-    )
-        external
-        returns (bool success);
-
-    function tokenBalanceOf(
-        address ownerAddress
-    )
-        external
-        view
-        returns (uint256 balance);
-}
-
-
-/// @dev A minimalist ERC20/WETH token.
-contract TestToken {
-
-    uint8 public decimals;
-    ITestContract private _testContract;
-
-    constructor(uint8 decimals_) public {
-        decimals = decimals_;
-        _testContract = ITestContract(msg.sender);
-    }
-
-    function approve(address spender, uint256 allowance)
-        external
-        returns (bool)
-    {
-        return _testContract.tokenApprove(
-            msg.sender,
-            spender,
-            allowance
-        );
-    }
-
-    function transfer(address recipient, uint256 amount)
-        external
-        returns (bool)
-    {
-        return _testContract.tokenTransfer(
-            msg.sender,
-            recipient,
-            amount
-        );
-    }
-
-    function withdraw(uint256 amount)
-        external
-    {
-        return _testContract.wethWithdraw(msg.sender, amount);
-    }
-
-    function deposit()
-        external
-        payable
-    {
-        return _testContract.wethDeposit.value(msg.value)(msg.sender);
-    }
-
-    function allowance(address, address) external view returns (uint256) {
-        return 0;
-    }
-
-    function balanceOf(address owner)
-        external
-        view
-        returns (uint256)
-    {
-        return _testContract.tokenBalanceOf(owner);
-    }
-}
-
-
-/// @dev KyberBridge overridden to mock tokens and implement IKyberBridge.
-contract TestKyberBridge is
-    KyberBridge,
-    ITestContract,
-    IKyberNetworkProxy
-{
-    event KyberBridgeTrade(
-        uint256 msgValue,
-        address sellTokenAddress,
-        uint256 sellAmount,
-        address buyTokenAddress,
-        address payable recipientAddress,
-        uint256 maxBuyTokenAmount,
-        uint256 minConversionRate,
-        address walletId
-    );
-
-    event KyberBridgeWethWithdraw(
-        address ownerAddress,
-        uint256 amount
-    );
-
-    event KyberBridgeWethDeposit(
-        uint256 msgValue,
-        address ownerAddress,
-        uint256 amount
-    );
-
-    event KyberBridgeTokenApprove(
-        address tokenAddress,
-        address ownerAddress,
-        address spenderAddress,
-        uint256 allowance
-    );
-
-    event KyberBridgeTokenTransfer(
-        address tokenAddress,
-        address ownerAddress,
-        address recipientAddress,
-        uint256 amount
-    );
-
-    IEtherToken public weth;
-    mapping (address => mapping (address => uint256)) private _tokenBalances;
-    uint256 private _nextFillAmount;
-
-    constructor() public {
-        weth = IEtherToken(address(new TestToken(18)));
-    }
-
-    /// @dev Implementation of `IKyberNetworkProxy.trade()`
-    function trade(
-        address sellTokenAddress,
-        uint256 sellAmount,
-        address buyTokenAddress,
-        address payable recipientAddress,
-        uint256 maxBuyTokenAmount,
-        uint256 minConversionRate,
-        address walletId
-    )
-        external
-        payable
-        returns(uint256 boughtAmount)
-    {
-        emit KyberBridgeTrade(
-            msg.value,
-            sellTokenAddress,
-            sellAmount,
-            buyTokenAddress,
-            recipientAddress,
-            maxBuyTokenAmount,
-            minConversionRate,
-            walletId
-        );
-        return _nextFillAmount;
-    }
-
-    function tradeWithHint(
-        address sellTokenAddress,
-        uint256 sellAmount,
-        address buyTokenAddress,
-        address payable recipientAddress,
-        uint256 maxBuyTokenAmount,
-        uint256 minConversionRate,
-        address payable walletId,
-        bytes calldata hint
-    )
-        external
-        payable
-        returns (uint256 boughtAmount)
-    {
-        emit KyberBridgeTrade(
-            msg.value,
-            sellTokenAddress,
-            sellAmount,
-            buyTokenAddress,
-            recipientAddress,
-            maxBuyTokenAmount,
-            minConversionRate,
-            walletId
-        );
-        return _nextFillAmount;
-    }
-
-    function createToken(uint8 decimals)
-        external
-        returns (address tokenAddress)
-    {
-        return address(new TestToken(decimals));
-    }
-
-    function setNextFillAmount(uint256 amount)
-        external
-        payable
-    {
-        if (msg.value != 0) {
-            require(amount == msg.value, "VALUE_AMOUNT_MISMATCH");
-            grantTokensTo(address(weth), address(this), msg.value);
-        }
-        _nextFillAmount = amount;
-    }
-
-    function wethDeposit(
-        address ownerAddress
-    )
-        external
-        payable
-    {
-        require(msg.sender == address(weth), "ONLY_WETH");
-        grantTokensTo(address(weth), ownerAddress, msg.value);
-        emit KyberBridgeWethDeposit(
-            msg.value,
-            ownerAddress,
-            msg.value
-        );
-    }
-
-    function wethWithdraw(
-        address payable ownerAddress,
-        uint256 amount
-    )
-        external
-    {
-        require(msg.sender == address(weth), "ONLY_WETH");
-        _tokenBalances[address(weth)][ownerAddress] -= amount;
-        ownerAddress.transfer(amount);
-        emit KyberBridgeWethWithdraw(
-            ownerAddress,
-            amount
-        );
-    }
-
-    function tokenApprove(
-        address ownerAddress,
-        address spenderAddress,
-        uint256 allowance
-    )
-        external
-        returns (bool success)
-    {
-        emit KyberBridgeTokenApprove(
-            msg.sender,
-            ownerAddress,
-            spenderAddress,
-            allowance
-        );
-        return true;
-    }
-
-    function tokenTransfer(
-        address ownerAddress,
-        address recipientAddress,
-        uint256 amount
-    )
-        external
-        returns (bool success)
-    {
-        _tokenBalances[msg.sender][ownerAddress] -= amount;
-        _tokenBalances[msg.sender][recipientAddress] += amount;
-        emit KyberBridgeTokenTransfer(
-            msg.sender,
-            ownerAddress,
-            recipientAddress,
-            amount
-        );
-        return true;
-    }
-
-    function tokenBalanceOf(
-        address ownerAddress
-    )
-        external
-        view
-        returns (uint256 balance)
-    {
-        return _tokenBalances[msg.sender][ownerAddress];
-    }
-
-    function grantTokensTo(address tokenAddress, address ownerAddress, uint256 amount)
-        public
-        payable
-    {
-        _tokenBalances[tokenAddress][ownerAddress] += amount;
-        if (tokenAddress != address(weth)) {
-            // Send back ether if not WETH.
-            msg.sender.transfer(msg.value);
-        } else {
-            require(msg.value == amount, "VALUE_AMOUNT_MISMATCH");
-        }
-    }
-
-    // @dev overridden to point to this contract.
-    function _getKyberNetworkProxyAddress()
-        internal
-        view
-        returns (address)
-    {
-        return address(this);
-    }
-
-    // @dev overridden to point to test WETH.
-    function _getWethAddress()
-        internal
-        view
-        returns (address)
-    {
-        return address(weth);
-    }
-}

contracts/asset-proxy/contracts/test/TestStaticCallTarget.sol

@@ -1,82 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-
-
-contract TestStaticCallTarget {
-
-    using LibBytes for bytes;
-
-    uint256 internal _state;
- 
-    function updateState()
-        external
-    {
-        _state++;
-    }
-
-    function assertEvenNumber(uint256 target)
-        external
-        pure
-    {
-        require(
-            target % 2 == 0,
-            "TARGET_NOT_EVEN"
-        );
-    }
-
-    function isOddNumber(uint256 target)
-        external
-        pure
-        returns (bool isOdd)
-    {
-        isOdd = target % 2 == 1;
-        return isOdd;
-    }
-
-    function noInputFunction()
-        external
-        pure
-    {
-        assert(msg.data.length == 4 && msg.data.readBytes4(0) == bytes4(keccak256("noInputFunction()")));
-    }
-
-    function dynamicInputFunction(bytes calldata a)
-        external
-        pure
-    {
-        bytes memory abiEncodedData = abi.encodeWithSignature("dynamicInputFunction(bytes)", a);
-        assert(msg.data.equals(abiEncodedData));
-    }
-
-    function returnComplexType(uint256 a, uint256 b)
-        external
-        view
-        returns (bytes memory result)
-    {
-        result = abi.encodePacked(
-            address(this),
-            a,
-            b
-        );
-        return result;
-    }
-}

contracts/asset-proxy/contracts/test/TestUniswapBridge.sol

@@ -1,436 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "../src/bridges/UniswapBridge.sol";
-import "../src/interfaces/IUniswapExchangeFactory.sol";
-import "../src/interfaces/IUniswapExchange.sol";
-
-
-// solhint-disable no-simple-event-func-name
-contract TestEventsRaiser {
-
-    event TokenTransfer(
-        address token,
-        address from,
-        address to,
-        uint256 amount
-    );
-
-    event TokenApprove(
-        address spender,
-        uint256 allowance
-    );
-
-    event WethDeposit(
-        uint256 amount
-    );
-
-    event WethWithdraw(
-        uint256 amount
-    );
-
-    event EthToTokenTransferInput(
-        address exchange,
-        uint256 minTokensBought,
-        uint256 deadline,
-        address recipient
-    );
-
-    event TokenToEthSwapInput(
-        address exchange,
-        uint256 tokensSold,
-        uint256 minEthBought,
-        uint256 deadline
-    );
-
-    event TokenToTokenTransferInput(
-        address exchange,
-        uint256 tokensSold,
-        uint256 minTokensBought,
-        uint256 minEthBought,
-        uint256 deadline,
-        address recipient,
-        address toTokenAddress
-    );
-
-    function raiseEthToTokenTransferInput(
-        uint256 minTokensBought,
-        uint256 deadline,
-        address recipient
-    )
-        external
-    {
-        emit EthToTokenTransferInput(
-            msg.sender,
-            minTokensBought,
-            deadline,
-            recipient
-        );
-    }
-
-    function raiseTokenToEthSwapInput(
-        uint256 tokensSold,
-        uint256 minEthBought,
-        uint256 deadline
-    )
-        external
-    {
-        emit TokenToEthSwapInput(
-            msg.sender,
-            tokensSold,
-            minEthBought,
-            deadline
-        );
-    }
-
-    function raiseTokenToTokenTransferInput(
-        uint256 tokensSold,
-        uint256 minTokensBought,
-        uint256 minEthBought,
-        uint256 deadline,
-        address recipient,
-        address toTokenAddress
-    )
-        external
-    {
-        emit TokenToTokenTransferInput(
-            msg.sender,
-            tokensSold,
-            minTokensBought,
-            minEthBought,
-            deadline,
-            recipient,
-            toTokenAddress
-        );
-    }
-
-    function raiseTokenTransfer(
-        address from,
-        address to,
-        uint256 amount
-    )
-        external
-    {
-        emit TokenTransfer(
-            msg.sender,
-            from,
-            to,
-            amount
-        );
-    }
-
-    function raiseTokenApprove(address spender, uint256 allowance)
-        external
-    {
-        emit TokenApprove(spender, allowance);
-    }
-
-    function raiseWethDeposit(uint256 amount)
-        external
-    {
-        emit WethDeposit(amount);
-    }
-
-    function raiseWethWithdraw(uint256 amount)
-        external
-    {
-        emit WethWithdraw(amount);
-    }
-}
-
-
-/// @dev A minimalist ERC20/WETH token.
-contract TestToken {
-
-    using LibSafeMath for uint256;
-
-    mapping (address => uint256) public balances;
-    string private _nextRevertReason;
-
-    /// @dev Set the balance for `owner`.
-    function setBalance(address owner)
-        external
-        payable
-    {
-        balances[owner] = msg.value;
-    }
-
-    /// @dev Set the revert reason for `transfer()`,
-    ///      `deposit()`, and `withdraw()`.
-    function setRevertReason(string calldata reason)
-        external
-    {
-        _nextRevertReason = reason;
-    }
-
-    /// @dev Just calls `raiseTokenTransfer()` on the caller.
-    function transfer(address to, uint256 amount)
-        external
-        returns (bool)
-    {
-        _revertIfReasonExists();
-        TestEventsRaiser(msg.sender).raiseTokenTransfer(msg.sender, to, amount);
-        return true;
-    }
-
-    /// @dev Just calls `raiseTokenApprove()` on the caller.
-    function approve(address spender, uint256 allowance)
-        external
-        returns (bool)
-    {
-        TestEventsRaiser(msg.sender).raiseTokenApprove(spender, allowance);
-        return true;
-    }
-
-    /// @dev `IWETH.deposit()` that increases balances and calls
-    ///     `raiseWethDeposit()` on the caller.
-    function deposit()
-        external
-        payable
-    {
-        _revertIfReasonExists();
-        balances[msg.sender] += balances[msg.sender].safeAdd(msg.value);
-        TestEventsRaiser(msg.sender).raiseWethDeposit(msg.value);
-    }
-
-    /// @dev `IWETH.withdraw()` that just reduces balances and calls
-    ///       `raiseWethWithdraw()` on the caller.
-    function withdraw(uint256 amount)
-        external
-    {
-        _revertIfReasonExists();
-        balances[msg.sender] = balances[msg.sender].safeSub(amount);
-        msg.sender.transfer(amount);
-        TestEventsRaiser(msg.sender).raiseWethWithdraw(amount);
-    }
-
-    function allowance(address, address) external view returns (uint256) {
-        return 0;
-    }
-
-    /// @dev Retrieve the balance for `owner`.
-    function balanceOf(address owner)
-        external
-        view
-        returns (uint256)
-    {
-        return balances[owner];
-    }
-
-    function _revertIfReasonExists()
-        private
-        view
-    {
-        if (bytes(_nextRevertReason).length != 0) {
-            revert(_nextRevertReason);
-        }
-    }
-}
-
-
-contract TestExchange is
-    IUniswapExchange
-{
-    address public tokenAddress;
-    string private _nextRevertReason;
-
-    constructor(address _tokenAddress) public {
-        tokenAddress = _tokenAddress;
-    }
-
-    function setFillBehavior(
-        string calldata revertReason
-    )
-        external
-        payable
-    {
-        _nextRevertReason = revertReason;
-    }
-
-    function ethToTokenTransferInput(
-        uint256 minTokensBought,
-        uint256 deadline,
-        address recipient
-    )
-        external
-        payable
-        returns (uint256 tokensBought)
-    {
-        TestEventsRaiser(msg.sender).raiseEthToTokenTransferInput(
-            minTokensBought,
-            deadline,
-            recipient
-        );
-        _revertIfReasonExists();
-        return address(this).balance;
-    }
-
-    function tokenToEthSwapInput(
-        uint256 tokensSold,
-        uint256 minEthBought,
-        uint256 deadline
-    )
-        external
-        returns (uint256 ethBought)
-    {
-        TestEventsRaiser(msg.sender).raiseTokenToEthSwapInput(
-            tokensSold,
-            minEthBought,
-            deadline
-        );
-        _revertIfReasonExists();
-        uint256 fillAmount = address(this).balance;
-        msg.sender.transfer(fillAmount);
-        return fillAmount;
-    }
-
-    function tokenToTokenTransferInput(
-        uint256 tokensSold,
-        uint256 minTokensBought,
-        uint256 minEthBought,
-        uint256 deadline,
-        address recipient,
-        address toTokenAddress
-    )
-        external
-        returns (uint256 tokensBought)
-    {
-        TestEventsRaiser(msg.sender).raiseTokenToTokenTransferInput(
-            tokensSold,
-            minTokensBought,
-            minEthBought,
-            deadline,
-            recipient,
-            toTokenAddress
-        );
-        _revertIfReasonExists();
-        return address(this).balance;
-    }
-
-    function toTokenAddress()
-        external
-        view
-        returns (address _tokenAddress)
-    {
-        return tokenAddress;
-    }
-
-    function _revertIfReasonExists()
-        private
-        view
-    {
-        if (bytes(_nextRevertReason).length != 0) {
-            revert(_nextRevertReason);
-        }
-    }
-}
-
-
-/// @dev UniswapBridge overridden to mock tokens and implement IUniswapExchangeFactory.
-contract TestUniswapBridge is
-    IUniswapExchangeFactory,
-    TestEventsRaiser,
-    UniswapBridge
-{
-    TestToken public wethToken;
-    // Token address to TestToken instance.
-    mapping (address => TestToken) private _testTokens;
-    // Token address to TestExchange instance.
-    mapping (address => TestExchange) private _testExchanges;
-
-    constructor() public {
-        wethToken = new TestToken();
-        _testTokens[address(wethToken)] = wethToken;
-    }
-
-    /// @dev Sets the balance of this contract for an existing token.
-    ///      The wei attached will be the balance.
-    function setTokenBalance(address tokenAddress)
-        external
-        payable
-    {
-        TestToken token = _testTokens[tokenAddress];
-        token.deposit.value(msg.value)();
-    }
-
-    /// @dev Sets the revert reason for an existing token.
-    function setTokenRevertReason(address tokenAddress, string calldata revertReason)
-        external
-    {
-        TestToken token = _testTokens[tokenAddress];
-        token.setRevertReason(revertReason);
-    }
-
-    /// @dev Create a token and exchange (if they don't exist) for a new token
-    ///      and sets the exchange revert and fill behavior. The wei attached
-    ///      will be the fill amount for the exchange.
-    /// @param tokenAddress The token address. If zero, one will be created.
-    /// @param revertReason The revert reason for exchange operations.
-    function createTokenAndExchange(
-        address tokenAddress,
-        string calldata revertReason
-    )
-        external
-        payable
-        returns (TestToken token, TestExchange exchange)
-    {
-        token = TestToken(tokenAddress);
-        if (tokenAddress == address(0)) {
-            token = new TestToken();
-        }
-        _testTokens[address(token)] = token;
-        exchange = _testExchanges[address(token)];
-        if (address(exchange) == address(0)) {
-            _testExchanges[address(token)] = exchange = new TestExchange(address(token));
-        }
-        exchange.setFillBehavior.value(msg.value)(revertReason);
-        return (token, exchange);
-    }
-
-    /// @dev `IUniswapExchangeFactory.getExchange`
-    function getExchange(address tokenAddress)
-        external
-        view
-        returns (address)
-    {
-        return address(_testExchanges[tokenAddress]);
-    }
-
-    // @dev Use `wethToken`.
-    function _getWethAddress()
-        internal
-        view
-        returns (address)
-    {
-        return address(wethToken);
-    }
-
-    // @dev This contract will double as the Uniswap contract.
-    function _getUniswapExchangeFactoryAddress()
-        internal
-        view
-        returns (address)
-    {
-        return address(this);
-    }
-}

contracts/asset-proxy/contracts/test/TestUniswapV2Bridge.sol

@@ -1,253 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "@0x/contracts-utils/contracts/src/LibAddressArray.sol";
-import "../src/bridges/UniswapV2Bridge.sol";
-import "../src/interfaces/IUniswapV2Router01.sol";
-
-
-contract TestEventsRaiser {
-
-    event TokenTransfer(
-        address token,
-        address from,
-        address to,
-        uint256 amount
-    );
-
-    event TokenApprove(
-        address spender,
-        uint256 allowance
-    );
-
-    event SwapExactTokensForTokensInput(
-        uint amountIn,
-        uint amountOutMin,
-        address toTokenAddress,
-        address to,
-        uint deadline
-    );
-
-    function raiseTokenTransfer(
-        address from,
-        address to,
-        uint256 amount
-    )
-        external
-    {
-        emit TokenTransfer(
-            msg.sender,
-            from,
-            to,
-            amount
-        );
-    }
-
-    function raiseTokenApprove(address spender, uint256 allowance) external {
-        emit TokenApprove(spender, allowance);
-    }
-
-    function raiseSwapExactTokensForTokensInput(
-        uint amountIn,
-        uint amountOutMin,
-        address toTokenAddress,
-        address to,
-        uint deadline
-    ) external
-    {
-        emit SwapExactTokensForTokensInput(
-            amountIn,
-            amountOutMin,
-            toTokenAddress,
-            to,
-            deadline
-        );
-    }
-}
-
-
-/// @dev A minimalist ERC20 token.
-contract TestToken {
-
-    using LibSafeMath for uint256;
-
-    mapping (address => uint256) public balances;
-    string private _nextRevertReason;
-
-    /// @dev Set the balance for `owner`.
-    function setBalance(address owner, uint256 balance)
-        external
-        payable
-    {
-        balances[owner] = balance;
-    }
-
-    /// @dev Just emits a TokenTransfer event on the caller
-    function transfer(address to, uint256 amount)
-        external
-        returns (bool)
-    {
-        TestEventsRaiser(msg.sender).raiseTokenTransfer(msg.sender, to, amount);
-        return true;
-    }
-
-    /// @dev Just emits a TokenApprove event on the caller
-    function approve(address spender, uint256 allowance)
-        external
-        returns (bool)
-    {
-        TestEventsRaiser(msg.sender).raiseTokenApprove(spender, allowance);
-        return true;
-    }
-
-    function allowance(address, address) external view returns (uint256) {
-        return 0;
-    }
-
-    /// @dev Retrieve the balance for `owner`.
-    function balanceOf(address owner)
-        external
-        view
-        returns (uint256)
-    {
-        return balances[owner];
-    }
-}
-
-
-/// @dev Mock the UniswapV2Router01 contract
-contract TestRouter is
-    IUniswapV2Router01
-{
-    string private _nextRevertReason;
-
-    /// @dev Set the revert reason for `swapExactTokensForTokens`.
-    function setRevertReason(string calldata reason)
-        external
-    {
-        _nextRevertReason = reason;
-    }
-
-    function swapExactTokensForTokens(
-        uint amountIn,
-        uint amountOutMin,
-        address[] calldata path,
-        address to,
-        uint deadline
-    ) external returns (uint[] memory amounts)
-    {
-        _revertIfReasonExists();
-
-        amounts = new uint[](path.length);
-        amounts[0] = amountIn;
-        amounts[amounts.length - 1] = amountOutMin;
-
-        TestEventsRaiser(msg.sender).raiseSwapExactTokensForTokensInput(
-            // tokens sold
-            amountIn,
-            // tokens bought
-            amountOutMin,
-            // output token (toTokenAddress)
-            path[path.length - 1],
-            // recipient
-            to,
-            // deadline
-            deadline
-        );
-    }
-
-    function _revertIfReasonExists()
-        private
-        view
-    {
-        if (bytes(_nextRevertReason).length != 0) {
-            revert(_nextRevertReason);
-        }
-    }
-
-}
-
-
-/// @dev UniswapV2Bridge overridden to mock tokens and Uniswap router
-contract TestUniswapV2Bridge is
-    UniswapV2Bridge,
-    TestEventsRaiser
-{
-
-    // Token address to TestToken instance.
-    mapping (address => TestToken) private _testTokens;
-    // TestRouter instance.
-    TestRouter private _testRouter;
-
-    constructor() public {
-        _testRouter = new TestRouter();
-    }
-
-    function setRouterRevertReason(string calldata revertReason)
-        external
-    {
-        _testRouter.setRevertReason(revertReason);
-    }
-
-    /// @dev Sets the balance of this contract for an existing token.
-    ///      The wei attached will be the balance.
-    function setTokenBalance(address tokenAddress, uint256 balance)
-        external
-    {
-        TestToken token = _testTokens[tokenAddress];
-        token.setBalance(address(this), balance);
-    }
-
-    /// @dev Create a new token
-    /// @param tokenAddress The token address. If zero, one will be created.
-    function createToken(
-        address tokenAddress
-    )
-        external
-        returns (TestToken token)
-    {
-        token = TestToken(tokenAddress);
-        if (tokenAddress == address(0)) {
-            token = new TestToken();
-        }
-        _testTokens[address(token)] = token;
-
-        return token;
-    }
-
-    function getRouterAddress()
-        external
-        view
-        returns (address)
-    {
-        return address(_testRouter);
-    }
-
-    function _getUniswapV2Router01Address()
-        internal
-        view
-        returns (address)
-    {
-        return address(_testRouter);
-    }
-}

contracts/asset-proxy/package.json

@@ -1,99 +0,0 @@
-{
-    "name": "@0x/contracts-asset-proxy",
-    "version": "3.7.8",
-    "engines": {
-        "node": ">=6.12"
-    },
-    "description": "Smart contract components of 0x protocol",
-    "main": "lib/src/index.js",
-    "directories": {
-        "test": "test"
-    },
-    "scripts": {
-        "build": "yarn pre_build && tsc -b",
-        "build:ci": "yarn build",
-        "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
-        "test": "yarn run_mocha",
-        "rebuild_and_test": "run-s build test",
-        "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
-        "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
-        "test:trace": "SOLIDITY_REVERT_TRACE=true run-s build run_mocha",
-        "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
-        "compile": "sol-compiler",
-        "watch": "sol-compiler -w",
-        "clean": "shx rm -rf lib test/generated-artifacts test/generated-wrappers generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --debug --abis  ${npm_package_config_abis} --output test/generated-wrappers --backend ethers",
-        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./test/generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude ./test/generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
-        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./test/generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude ./test/generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
-        "coverage:report:text": "istanbul report text",
-        "coverage:report:html": "istanbul report html && open coverage/index.html",
-        "profiler:report:html": "istanbul report html && open coverage/index.html",
-        "coverage:report:lcov": "istanbul report lcov",
-        "test:circleci": "yarn test",
-        "contracts:gen": "contracts-gen generate",
-        "contracts:copy": "contracts-gen copy",
-        "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol",
-        "compile:truffle": "truffle compile",
-        "docs:md": "ts-doc-gen --sourceDir='$PROJECT_FILES' --output=$MD_FILE_DIR --fileExtension=mdx --tsconfig=./typedoc-tsconfig.json",
-        "docs:json": "typedoc --excludePrivate --excludeExternals --excludeProtected --ignoreCompilerErrors --target ES5 --tsconfig typedoc-tsconfig.json --json $JSON_FILE_PATH $PROJECT_FILES"
-    },
-    "config": {
-        "abis": "./test/generated-artifacts/@(BalancerBridge|BancorBridge|ChaiBridge|CreamBridge|CryptoComBridge|CurveBridge|DODOBridge|DexForwarderBridge|DydxBridge|ERC1155Proxy|ERC20BridgeProxy|ERC20Proxy|ERC721Proxy|Eth2DaiBridge|IAssetData|IAssetProxy|IAssetProxyDispatcher|IAuthorizable|IBalancerPool|IBancorNetwork|IChai|ICurve|IDydx|IDydxBridge|IERC20Bridge|IEth2Dai|IGasToken|IKyberNetworkProxy|IMStable|IMooniswap|IShell|IUniswapExchange|IUniswapExchangeFactory|IUniswapV2Router01|KyberBridge|MStableBridge|MixinAssetProxyDispatcher|MixinAuthorizable|MixinGasToken|MooniswapBridge|MultiAssetProxy|Ownable|ShellBridge|SnowSwapBridge|StaticCallProxy|SushiSwapBridge|SwerveBridge|TestBancorBridge|TestChaiBridge|TestDexForwarderBridge|TestDydxBridge|TestERC20Bridge|TestEth2DaiBridge|TestKyberBridge|TestStaticCallTarget|TestUniswapBridge|TestUniswapV2Bridge|UniswapBridge|UniswapV2Bridge).json",
-        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
-    },
-    "repository": {
-        "type": "git",
-        "url": "https://github.com/0xProject/protocol.git"
-    },
-    "license": "Apache-2.0",
-    "bugs": {
-        "url": "https://github.com/0xProject/protocol/issues"
-    },
-    "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/protocol",
-    "devDependencies": {
-        "@0x/abi-gen": "^5.4.21",
-        "@0x/contract-wrappers": "^13.14.0",
-        "@0x/contracts-gen": "^2.0.32",
-        "@0x/contracts-test-utils": "^5.3.23",
-        "@0x/contracts-utils": "^4.7.5",
-        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.6.1",
-        "@0x/ts-doc-gen": "^0.0.28",
-        "@0x/tslint-config": "^4.1.3",
-        "@types/lodash": "4.14.104",
-        "@types/mocha": "^5.2.7",
-        "@types/node": "12.12.54",
-        "chai": "^4.0.1",
-        "chai-as-promised": "^7.1.0",
-        "chai-bignumber": "^3.0.0",
-        "dirty-chai": "^2.0.1",
-        "ethereumjs-util": "^5.1.1",
-        "make-promises-safe": "^1.1.0",
-        "mocha": "^6.2.0",
-        "npm-run-all": "^4.1.2",
-        "shx": "^0.2.2",
-        "solhint": "^1.4.1",
-        "truffle": "^5.0.32",
-        "tslint": "5.11.0",
-        "typedoc": "~0.16.11",
-        "typescript": "3.0.1"
-    },
-    "dependencies": {
-        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-erc1155": "^2.1.26",
-        "@0x/contracts-erc20": "^3.3.5",
-        "@0x/contracts-erc721": "^3.1.26",
-        "@0x/contracts-exchange-libs": "^4.3.26",
-        "@0x/order-utils": "^10.4.18",
-        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.4.1",
-        "ethereum-types": "^3.4.0",
-        "lodash": "^4.17.11"
-    },
-    "publishConfig": {
-        "access": "public"
-    },
-    "gitHead": "4f91bfd907996b2f4dd383778b50c479c2602b56"
-}

contracts/asset-proxy/src/artifacts.ts

@@ -1,127 +0,0 @@
-/*
- * -----------------------------------------------------------------------------
- * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
- * -----------------------------------------------------------------------------
- */
-import { ContractArtifact } from 'ethereum-types';
-
-import * as BalancerBridge from '../generated-artifacts/BalancerBridge.json';
-import * as BancorBridge from '../generated-artifacts/BancorBridge.json';
-import * as ChaiBridge from '../generated-artifacts/ChaiBridge.json';
-import * as CreamBridge from '../generated-artifacts/CreamBridge.json';
-import * as CryptoComBridge from '../generated-artifacts/CryptoComBridge.json';
-import * as CurveBridge from '../generated-artifacts/CurveBridge.json';
-import * as DexForwarderBridge from '../generated-artifacts/DexForwarderBridge.json';
-import * as DODOBridge from '../generated-artifacts/DODOBridge.json';
-import * as DydxBridge from '../generated-artifacts/DydxBridge.json';
-import * as ERC1155Proxy from '../generated-artifacts/ERC1155Proxy.json';
-import * as ERC20BridgeProxy from '../generated-artifacts/ERC20BridgeProxy.json';
-import * as ERC20Proxy from '../generated-artifacts/ERC20Proxy.json';
-import * as ERC721Proxy from '../generated-artifacts/ERC721Proxy.json';
-import * as Eth2DaiBridge from '../generated-artifacts/Eth2DaiBridge.json';
-import * as IAssetData from '../generated-artifacts/IAssetData.json';
-import * as IAssetProxy from '../generated-artifacts/IAssetProxy.json';
-import * as IAssetProxyDispatcher from '../generated-artifacts/IAssetProxyDispatcher.json';
-import * as IAuthorizable from '../generated-artifacts/IAuthorizable.json';
-import * as IBalancerPool from '../generated-artifacts/IBalancerPool.json';
-import * as IBancorNetwork from '../generated-artifacts/IBancorNetwork.json';
-import * as IChai from '../generated-artifacts/IChai.json';
-import * as ICurve from '../generated-artifacts/ICurve.json';
-import * as IDydx from '../generated-artifacts/IDydx.json';
-import * as IDydxBridge from '../generated-artifacts/IDydxBridge.json';
-import * as IERC20Bridge from '../generated-artifacts/IERC20Bridge.json';
-import * as IEth2Dai from '../generated-artifacts/IEth2Dai.json';
-import * as IGasToken from '../generated-artifacts/IGasToken.json';
-import * as IKyberNetworkProxy from '../generated-artifacts/IKyberNetworkProxy.json';
-import * as IMooniswap from '../generated-artifacts/IMooniswap.json';
-import * as IMStable from '../generated-artifacts/IMStable.json';
-import * as IShell from '../generated-artifacts/IShell.json';
-import * as IUniswapExchange from '../generated-artifacts/IUniswapExchange.json';
-import * as IUniswapExchangeFactory from '../generated-artifacts/IUniswapExchangeFactory.json';
-import * as IUniswapV2Router01 from '../generated-artifacts/IUniswapV2Router01.json';
-import * as KyberBridge from '../generated-artifacts/KyberBridge.json';
-import * as MixinAssetProxyDispatcher from '../generated-artifacts/MixinAssetProxyDispatcher.json';
-import * as MixinAuthorizable from '../generated-artifacts/MixinAuthorizable.json';
-import * as MixinGasToken from '../generated-artifacts/MixinGasToken.json';
-import * as MooniswapBridge from '../generated-artifacts/MooniswapBridge.json';
-import * as MStableBridge from '../generated-artifacts/MStableBridge.json';
-import * as MultiAssetProxy from '../generated-artifacts/MultiAssetProxy.json';
-import * as Ownable from '../generated-artifacts/Ownable.json';
-import * as ShellBridge from '../generated-artifacts/ShellBridge.json';
-import * as SnowSwapBridge from '../generated-artifacts/SnowSwapBridge.json';
-import * as StaticCallProxy from '../generated-artifacts/StaticCallProxy.json';
-import * as SushiSwapBridge from '../generated-artifacts/SushiSwapBridge.json';
-import * as SwerveBridge from '../generated-artifacts/SwerveBridge.json';
-import * as TestBancorBridge from '../generated-artifacts/TestBancorBridge.json';
-import * as TestChaiBridge from '../generated-artifacts/TestChaiBridge.json';
-import * as TestDexForwarderBridge from '../generated-artifacts/TestDexForwarderBridge.json';
-import * as TestDydxBridge from '../generated-artifacts/TestDydxBridge.json';
-import * as TestERC20Bridge from '../generated-artifacts/TestERC20Bridge.json';
-import * as TestEth2DaiBridge from '../generated-artifacts/TestEth2DaiBridge.json';
-import * as TestKyberBridge from '../generated-artifacts/TestKyberBridge.json';
-import * as TestStaticCallTarget from '../generated-artifacts/TestStaticCallTarget.json';
-import * as TestUniswapBridge from '../generated-artifacts/TestUniswapBridge.json';
-import * as TestUniswapV2Bridge from '../generated-artifacts/TestUniswapV2Bridge.json';
-import * as UniswapBridge from '../generated-artifacts/UniswapBridge.json';
-import * as UniswapV2Bridge from '../generated-artifacts/UniswapV2Bridge.json';
-export const artifacts = {
-    MixinAssetProxyDispatcher: MixinAssetProxyDispatcher as ContractArtifact,
-    MixinAuthorizable: MixinAuthorizable as ContractArtifact,
-    Ownable: Ownable as ContractArtifact,
-    ERC1155Proxy: ERC1155Proxy as ContractArtifact,
-    ERC20BridgeProxy: ERC20BridgeProxy as ContractArtifact,
-    ERC20Proxy: ERC20Proxy as ContractArtifact,
-    ERC721Proxy: ERC721Proxy as ContractArtifact,
-    MultiAssetProxy: MultiAssetProxy as ContractArtifact,
-    StaticCallProxy: StaticCallProxy as ContractArtifact,
-    BalancerBridge: BalancerBridge as ContractArtifact,
-    BancorBridge: BancorBridge as ContractArtifact,
-    ChaiBridge: ChaiBridge as ContractArtifact,
-    CreamBridge: CreamBridge as ContractArtifact,
-    CryptoComBridge: CryptoComBridge as ContractArtifact,
-    CurveBridge: CurveBridge as ContractArtifact,
-    DODOBridge: DODOBridge as ContractArtifact,
-    DexForwarderBridge: DexForwarderBridge as ContractArtifact,
-    DydxBridge: DydxBridge as ContractArtifact,
-    Eth2DaiBridge: Eth2DaiBridge as ContractArtifact,
-    KyberBridge: KyberBridge as ContractArtifact,
-    MStableBridge: MStableBridge as ContractArtifact,
-    MixinGasToken: MixinGasToken as ContractArtifact,
-    MooniswapBridge: MooniswapBridge as ContractArtifact,
-    ShellBridge: ShellBridge as ContractArtifact,
-    SnowSwapBridge: SnowSwapBridge as ContractArtifact,
-    SushiSwapBridge: SushiSwapBridge as ContractArtifact,
-    SwerveBridge: SwerveBridge as ContractArtifact,
-    UniswapBridge: UniswapBridge as ContractArtifact,
-    UniswapV2Bridge: UniswapV2Bridge as ContractArtifact,
-    IAssetData: IAssetData as ContractArtifact,
-    IAssetProxy: IAssetProxy as ContractArtifact,
-    IAssetProxyDispatcher: IAssetProxyDispatcher as ContractArtifact,
-    IAuthorizable: IAuthorizable as ContractArtifact,
-    IBalancerPool: IBalancerPool as ContractArtifact,
-    IBancorNetwork: IBancorNetwork as ContractArtifact,
-    IChai: IChai as ContractArtifact,
-    ICurve: ICurve as ContractArtifact,
-    IDydx: IDydx as ContractArtifact,
-    IDydxBridge: IDydxBridge as ContractArtifact,
-    IERC20Bridge: IERC20Bridge as ContractArtifact,
-    IEth2Dai: IEth2Dai as ContractArtifact,
-    IGasToken: IGasToken as ContractArtifact,
-    IKyberNetworkProxy: IKyberNetworkProxy as ContractArtifact,
-    IMStable: IMStable as ContractArtifact,
-    IMooniswap: IMooniswap as ContractArtifact,
-    IShell: IShell as ContractArtifact,
-    IUniswapExchange: IUniswapExchange as ContractArtifact,
-    IUniswapExchangeFactory: IUniswapExchangeFactory as ContractArtifact,
-    IUniswapV2Router01: IUniswapV2Router01 as ContractArtifact,
-    TestBancorBridge: TestBancorBridge as ContractArtifact,
-    TestChaiBridge: TestChaiBridge as ContractArtifact,
-    TestDexForwarderBridge: TestDexForwarderBridge as ContractArtifact,
-    TestDydxBridge: TestDydxBridge as ContractArtifact,
-    TestERC20Bridge: TestERC20Bridge as ContractArtifact,
-    TestEth2DaiBridge: TestEth2DaiBridge as ContractArtifact,
-    TestKyberBridge: TestKyberBridge as ContractArtifact,
-    TestStaticCallTarget: TestStaticCallTarget as ContractArtifact,
-    TestUniswapBridge: TestUniswapBridge as ContractArtifact,
-    TestUniswapV2Bridge: TestUniswapV2Bridge as ContractArtifact,
-};

contracts/asset-proxy/src/asset_data.ts

@@ -1,112 +0,0 @@
-import { AssetProxyId } from '@0x/types';
-import { BigNumber, hexUtils } from '@0x/utils';
-
-import { IAssetDataContract } from './wrappers';
-
-const assetDataIface = new IAssetDataContract('0x0000000000000000000000000000000000000000', { isEIP1193: true } as any);
-
-/**
- * Get the proxy ID from encoded asset data.
- */
-export function getAssetDataProxyId(encoded: string): AssetProxyId {
-    // tslint:disable-next-line: no-unnecessary-type-assertion
-    return hexUtils.slice(encoded, 0, 4) as AssetProxyId;
-}
-
-/**
- * Decode ERC20 asset data.
- */
-export function decodeERC20AssetData(encoded: string): string {
-    return assetDataIface.getABIDecodedTransactionData<string>('ERC20Token', encoded);
-}
-
-/**
- * Decode ERC721 asset data.
- */
-export function decodeERC721AssetData(encoded: string): [string, BigNumber] {
-    return assetDataIface.getABIDecodedTransactionData<[string, BigNumber]>('ERC721Token', encoded);
-}
-
-/**
- * Decode ERC1155 asset data.
- */
-export function decodeERC1155AssetData(encoded: string): [string, BigNumber[], BigNumber[], string] {
-    return assetDataIface.getABIDecodedTransactionData<[string, BigNumber[], BigNumber[], string]>(
-        'ERC1155Assets',
-        encoded,
-    );
-}
-
-/**
- * Decode MultiAsset asset data.
- */
-export function decodeMultiAssetData(encoded: string): [BigNumber[], string[]] {
-    return assetDataIface.getABIDecodedTransactionData<[BigNumber[], string[]]>('MultiAsset', encoded);
-}
-
-/**
- * Decode StaticCall asset data.
- */
-export function decodeStaticCallAssetData(encoded: string): [string, string, string] {
-    return assetDataIface.getABIDecodedTransactionData<[string, string, string]>('StaticCall', encoded);
-}
-
-/**
- * Decode ERC20Bridge asset data.
- */
-export function decodeERC20BridgeAssetData(encoded: string): [string, string, string] {
-    return assetDataIface.getABIDecodedTransactionData<[string, string, string]>('ERC20Bridge', encoded);
-}
-
-/**
- * Encode ERC20 asset data.
- */
-export function encodeERC20AssetData(tokenAddress: string): string {
-    return assetDataIface.ERC20Token(tokenAddress).getABIEncodedTransactionData();
-}
-
-/**
- * Encode ERC721 asset data.
- */
-export function encodeERC721AssetData(tokenAddress: string, tokenId: BigNumber): string {
-    return assetDataIface.ERC721Token(tokenAddress, tokenId).getABIEncodedTransactionData();
-}
-
-/**
- * Encode ERC1155 asset data.
- */
-export function encodeERC1155AssetData(
-    tokenAddress: string,
-    tokenIds: BigNumber[],
-    values: BigNumber[],
-    callbackData: string,
-): string {
-    return assetDataIface.ERC1155Assets(tokenAddress, tokenIds, values, callbackData).getABIEncodedTransactionData();
-}
-
-/**
- * Encode MultiAsset asset data.
- */
-export function encodeMultiAssetData(values: BigNumber[], nestedAssetData: string[]): string {
-    return assetDataIface.MultiAsset(values, nestedAssetData).getABIEncodedTransactionData();
-}
-
-/**
- * Encode StaticCall asset data.
- */
-export function encodeStaticCallAssetData(
-    staticCallTargetAddress: string,
-    staticCallData: string,
-    expectedReturnDataHash: string,
-): string {
-    return assetDataIface
-        .StaticCall(staticCallTargetAddress, staticCallData, expectedReturnDataHash)
-        .getABIEncodedTransactionData();
-}
-
-/**
- * Encode ERC20Bridge asset data.
- */
-export function encodeERC20BridgeAssetData(tokenAddress: string, bridgeAddress: string, bridgeData: string): string {
-    return assetDataIface.ERC20Bridge(tokenAddress, bridgeAddress, bridgeData).getABIEncodedTransactionData();
-}

contracts/asset-proxy/src/dex_forwarder_bridge.ts

@@ -1,27 +0,0 @@
-import { AbiEncoder, BigNumber } from '@0x/utils';
-
-export interface DexForwarderBridgeCall {
-    target: string;
-    inputTokenAmount: BigNumber;
-    outputTokenAmount: BigNumber;
-    bridgeData: string;
-}
-
-export interface DexForwaderBridgeData {
-    inputToken: string;
-    calls: DexForwarderBridgeCall[];
-}
-
-export const dexForwarderBridgeDataEncoder = AbiEncoder.create([
-    { name: 'inputToken', type: 'address' },
-    {
-        name: 'calls',
-        type: 'tuple[]',
-        components: [
-            { name: 'target', type: 'address' },
-            { name: 'inputTokenAmount', type: 'uint256' },
-            { name: 'outputTokenAmount', type: 'uint256' },
-            { name: 'bridgeData', type: 'bytes' },
-        ],
-    },
-]);

contracts/asset-proxy/src/dydx_bridge_encoder.ts

@@ -1,40 +0,0 @@
-import { AbiEncoder, BigNumber } from '@0x/utils';
-
-export enum DydxBridgeActionType {
-    Deposit,
-    Withdraw,
-}
-
-export interface DydxBridgeAction {
-    actionType: DydxBridgeActionType;
-    accountIdx: BigNumber;
-    marketId: BigNumber;
-    conversionRateNumerator: BigNumber;
-    conversionRateDenominator: BigNumber;
-}
-
-export interface DydxBridgeData {
-    accountNumbers: BigNumber[];
-    actions: DydxBridgeAction[];
-}
-
-export const dydxBridgeDataEncoder = AbiEncoder.create([
-    {
-        name: 'bridgeData',
-        type: 'tuple',
-        components: [
-            { name: 'accountNumbers', type: 'uint256[]' },
-            {
-                name: 'actions',
-                type: 'tuple[]',
-                components: [
-                    { name: 'actionType', type: 'uint8' },
-                    { name: 'accountIdx', type: 'uint256' },
-                    { name: 'marketId', type: 'uint256' },
-                    { name: 'conversionRateNumerator', type: 'uint256' },
-                    { name: 'conversionRateDenominator', type: 'uint256' },
-                ],
-            },
-        ],
-    },
-]);

contracts/asset-proxy/src/erc1155_proxy_wrapper.ts

@@ -1,410 +0,0 @@
-import { artifacts as erc1155Artifacts, ERC1155MintableContract, Erc1155Wrapper } from '@0x/contracts-erc1155';
-import {
-    constants,
-    ERC1155FungibleHoldingsByOwner,
-    ERC1155HoldingsByOwner,
-    ERC1155NonFungibleHoldingsByOwner,
-    LogDecoder,
-    txDefaults,
-} from '@0x/contracts-test-utils';
-import { BigNumber } from '@0x/utils';
-import { Web3Wrapper } from '@0x/web3-wrapper';
-import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-
-import { ERC1155ProxyContract, IAssetDataContract, IAssetProxyContract } from './wrappers';
-
-export class ERC1155ProxyWrapper {
-    private readonly _tokenOwnerAddresses: string[];
-    private readonly _fungibleTokenIds: string[];
-    private readonly _nonFungibleTokenIds: string[];
-    private readonly _nfts: Array<{ id: BigNumber; tokenId: BigNumber }>;
-    private readonly _contractOwnerAddress: string;
-    private readonly _web3Wrapper: Web3Wrapper;
-    private readonly _provider: Provider;
-    private readonly _logDecoder: LogDecoder;
-    private readonly _dummyTokenWrappers: Erc1155Wrapper[];
-    private readonly _assetProxyInterface: IAssetProxyContract;
-    private readonly _assetDataInterface: IAssetDataContract;
-    private _proxyContract?: ERC1155ProxyContract;
-    private _proxyIdIfExists?: string;
-    private _initialTokenIdsByOwner: ERC1155HoldingsByOwner = { fungible: {}, nonFungible: {} };
-
-    constructor(provider: Provider, tokenOwnerAddresses: string[], contractOwnerAddress: string) {
-        this._web3Wrapper = new Web3Wrapper(provider);
-        this._provider = provider;
-        const allArtifacts = _.merge(artifacts, erc1155Artifacts);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, allArtifacts);
-        this._dummyTokenWrappers = [];
-        this._assetProxyInterface = new IAssetProxyContract(constants.NULL_ADDRESS, provider);
-        this._assetDataInterface = new IAssetDataContract(constants.NULL_ADDRESS, provider);
-        this._tokenOwnerAddresses = tokenOwnerAddresses;
-        this._contractOwnerAddress = contractOwnerAddress;
-        this._fungibleTokenIds = [];
-        this._nonFungibleTokenIds = [];
-        this._nfts = [];
-    }
-    /**
-     * @dev Deploys dummy ERC1155 contracts
-     * @return An array of ERC1155 wrappers; one for each deployed contract.
-     */
-    public async deployDummyContractsAsync(): Promise<Erc1155Wrapper[]> {
-        // tslint:disable-next-line:no-unused-variable
-        for (const i of _.times(constants.NUM_DUMMY_ERC1155_CONTRACTS_TO_DEPLOY)) {
-            const erc1155Contract = await ERC1155MintableContract.deployFrom0xArtifactAsync(
-                erc1155Artifacts.ERC1155Mintable,
-                this._provider,
-                txDefaults,
-                artifacts,
-            );
-            const erc1155Wrapper = new Erc1155Wrapper(erc1155Contract, this._contractOwnerAddress);
-            this._dummyTokenWrappers.push(erc1155Wrapper);
-        }
-        return this._dummyTokenWrappers;
-    }
-    /**
-     * @dev Deploys the ERC1155 proxy
-     * @return Deployed ERC1155 proxy contract instance
-     */
-    public async deployProxyAsync(): Promise<ERC1155ProxyContract> {
-        this._proxyContract = await ERC1155ProxyContract.deployFrom0xArtifactAsync(
-            artifacts.ERC1155Proxy,
-            this._provider,
-            txDefaults,
-            artifacts,
-        );
-        this._proxyIdIfExists = await this._proxyContract.getProxyId().callAsync();
-        return this._proxyContract;
-    }
-    /**
-     * @dev Gets the ERC1155 proxy id
-     */
-    public getProxyId(): string {
-        this._validateProxyContractExistsOrThrow();
-        return this._proxyIdIfExists as string;
-    }
-    /**
-     * @dev generates abi-encoded tx data for transferring erc1155 fungible/non-fungible tokens.
-     * @param from source address
-     * @param to destination address
-     * @param contractAddress address of erc155 contract
-     * @param tokensToTransfer array of erc1155 tokens to transfer
-     * @param valuesToTransfer array of corresponding values for each erc1155 token to transfer
-     * @param valueMultiplier each value in `valuesToTransfer` is multiplied by this
-     * @param receiverCallbackData callback data if `to` is a contract
-     * @param authorizedSender sender of `transferFrom` transaction
-     * @param extraData extra data to append to `transferFrom` transaction. Optional.
-     * @return abi encoded tx data.
-     */
-    public async getTransferFromAbiEncodedTxDataAsync(
-        from: string,
-        to: string,
-        contractAddress: string,
-        tokensToTransfer: BigNumber[],
-        valuesToTransfer: BigNumber[],
-        valueMultiplier: BigNumber,
-        receiverCallbackData: string,
-        authorizedSender: string,
-        assetData_?: string,
-    ): Promise<string> {
-        this._validateProxyContractExistsOrThrow();
-        const assetData =
-            assetData_ === undefined
-                ? this._assetDataInterface
-                      .ERC1155Assets(contractAddress, tokensToTransfer, valuesToTransfer, receiverCallbackData)
-                      .getABIEncodedTransactionData()
-                : assetData_;
-        const data = this._assetProxyInterface
-            .transferFrom(assetData, from, to, valueMultiplier)
-            .getABIEncodedTransactionData();
-        return data;
-    }
-    /**
-     * @dev transfers erc1155 fungible/non-fungible tokens.
-     * @param txData: abi-encoded tx data
-     * @param authorizedSender sender of `transferFrom` transaction
-     */
-    public async transferFromRawAsync(
-        txData: string,
-        authorizedSender: string,
-    ): Promise<TransactionReceiptWithDecodedLogs> {
-        const txHash = await this._web3Wrapper.sendTransactionAsync({
-            to: (this._proxyContract as ERC1155ProxyContract).address,
-            data: txData,
-            from: authorizedSender,
-            gas: 300000,
-        });
-        const txReceipt = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
-        return txReceipt;
-    }
-    /**
-     * @dev transfers erc1155 fungible/non-fungible tokens.
-     * @param from source address
-     * @param to destination address
-     * @param contractAddress address of erc155 contract
-     * @param tokensToTransfer array of erc1155 tokens to transfer
-     * @param valuesToTransfer array of corresponding values for each erc1155 token to transfer
-     * @param valueMultiplier each value in `valuesToTransfer` is multiplied by this
-     * @param receiverCallbackData callback data if `to` is a contract
-     * @param authorizedSender sender of `transferFrom` transaction
-     * @param extraData extra data to append to `transferFrom` transaction. Optional.
-     * @return tranasction hash.
-     */
-    public async transferFromAsync(
-        from: string,
-        to: string,
-        contractAddress: string,
-        tokensToTransfer: BigNumber[],
-        valuesToTransfer: BigNumber[],
-        valueMultiplier: BigNumber,
-        receiverCallbackData: string,
-        authorizedSender: string,
-        assetData_?: string,
-    ): Promise<TransactionReceiptWithDecodedLogs> {
-        this._validateProxyContractExistsOrThrow();
-        const assetData =
-            assetData_ === undefined
-                ? this._assetDataInterface
-                      .ERC1155Assets(contractAddress, tokensToTransfer, valuesToTransfer, receiverCallbackData)
-                      .getABIEncodedTransactionData()
-                : assetData_;
-        const data = this._assetProxyInterface
-            .transferFrom(assetData, from, to, valueMultiplier)
-            .getABIEncodedTransactionData();
-        const txHash = await this._web3Wrapper.sendTransactionAsync({
-            to: (this._proxyContract as ERC1155ProxyContract).address,
-            data,
-            from: authorizedSender,
-            gas: 300000,
-        });
-        const txReceipt = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
-        return txReceipt;
-    }
-    /**
-     * @dev For each deployed ERC1155 contract, this function mints a set of fungible/non-fungible
-     *      tokens for each token owner address (`_tokenOwnerAddresses`).
-     * @return Balances of each token owner, across all ERC1155 contracts and tokens.
-     */
-    public async setBalancesAndAllowancesAsync(): Promise<ERC1155HoldingsByOwner> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateProxyContractExistsOrThrow();
-        this._initialTokenIdsByOwner = {
-            fungible: {},
-            nonFungible: {},
-        };
-        const fungibleHoldingsByOwner: ERC1155FungibleHoldingsByOwner = {};
-        const nonFungibleHoldingsByOwner: ERC1155NonFungibleHoldingsByOwner = {};
-        // Set balances accordingly
-        for (const dummyWrapper of this._dummyTokenWrappers) {
-            const dummyAddress = dummyWrapper.getContract().address;
-            // tslint:disable-next-line:no-unused-variable
-            for (const i of _.times(constants.NUM_ERC1155_FUNGIBLE_TOKENS_MINT)) {
-                // Create a fungible token
-                const tokenId = await dummyWrapper.mintFungibleTokensAsync(
-                    this._tokenOwnerAddresses,
-                    constants.INITIAL_ERC1155_FUNGIBLE_BALANCE,
-                );
-                const tokenIdAsString = tokenId.toString();
-                this._fungibleTokenIds.push(tokenIdAsString);
-                // Mint tokens for each owner for this token
-                for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                    // tslint:disable-next-line:no-unused-variable
-                    if (fungibleHoldingsByOwner[tokenOwnerAddress] === undefined) {
-                        fungibleHoldingsByOwner[tokenOwnerAddress] = {};
-                    }
-                    if (fungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress] === undefined) {
-                        fungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress] = {};
-                    }
-                    fungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress][tokenIdAsString] =
-                        constants.INITIAL_ERC1155_FUNGIBLE_BALANCE;
-                    await dummyWrapper.setApprovalForAllAsync(
-                        tokenOwnerAddress,
-                        (this._proxyContract as ERC1155ProxyContract).address,
-                        true,
-                    );
-                }
-            }
-            // Non-fungible tokens
-            // tslint:disable-next-line:no-unused-variable
-            for (const j of _.times(constants.NUM_ERC1155_NONFUNGIBLE_TOKENS_MINT)) {
-                const [tokenId, nftIds] = await dummyWrapper.mintNonFungibleTokensAsync(this._tokenOwnerAddresses);
-                const tokenIdAsString = tokenId.toString();
-                this._nonFungibleTokenIds.push(tokenIdAsString);
-                _.each(this._tokenOwnerAddresses, async (tokenOwnerAddress: string, i: number) => {
-                    if (nonFungibleHoldingsByOwner[tokenOwnerAddress] === undefined) {
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress] = {};
-                    }
-                    if (nonFungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress] === undefined) {
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress] = {};
-                    }
-                    if (nonFungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress][tokenIdAsString] === undefined) {
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress][tokenIdAsString] = [];
-                    }
-                    this._nfts.push({ id: nftIds[i], tokenId });
-                    nonFungibleHoldingsByOwner[tokenOwnerAddress][dummyAddress][tokenIdAsString].push(nftIds[i]);
-                    await dummyWrapper.setApprovalForAllAsync(
-                        tokenOwnerAddress,
-                        (this._proxyContract as ERC1155ProxyContract).address,
-                        true,
-                    );
-                });
-            }
-        }
-        this._initialTokenIdsByOwner = {
-            fungible: fungibleHoldingsByOwner,
-            nonFungible: nonFungibleHoldingsByOwner,
-        };
-        return this._initialTokenIdsByOwner;
-    }
-    /**
-     * @dev For each deployed ERC1155 contract, this function quieries the set of fungible/non-fungible
-     *      tokens for each token owner address (`_tokenOwnerAddresses`).
-     * @return Balances of each token owner, across all ERC1155 contracts and tokens.
-     */
-    public async getBalancesAsync(): Promise<ERC1155HoldingsByOwner> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateBalancesAndAllowancesSetOrThrow();
-        const tokenHoldingsByOwner: ERC1155FungibleHoldingsByOwner = {};
-        const nonFungibleHoldingsByOwner: ERC1155NonFungibleHoldingsByOwner = {};
-        for (const dummyTokenWrapper of this._dummyTokenWrappers) {
-            const tokenContract = dummyTokenWrapper.getContract();
-            const tokenAddress = tokenContract.address;
-            // Construct batch balance call
-            const tokenOwners: string[] = [];
-            const tokenIds: BigNumber[] = [];
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                for (const tokenId of this._fungibleTokenIds) {
-                    tokenOwners.push(tokenOwnerAddress);
-                    tokenIds.push(new BigNumber(tokenId));
-                }
-                for (const nft of this._nfts) {
-                    tokenOwners.push(tokenOwnerAddress);
-                    tokenIds.push(nft.id);
-                }
-            }
-            const balances = await dummyTokenWrapper.getBalancesAsync(tokenOwners, tokenIds);
-            // Parse out balances into fungible / non-fungible token holdings
-            let i = 0;
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                // Fungible tokens
-                for (const tokenId of this._fungibleTokenIds) {
-                    if (tokenHoldingsByOwner[tokenOwnerAddress] === undefined) {
-                        tokenHoldingsByOwner[tokenOwnerAddress] = {};
-                    }
-                    if (tokenHoldingsByOwner[tokenOwnerAddress][tokenAddress] === undefined) {
-                        tokenHoldingsByOwner[tokenOwnerAddress][tokenAddress] = {};
-                    }
-                    tokenHoldingsByOwner[tokenOwnerAddress][tokenAddress][tokenId] = balances[i++];
-                }
-                // Non-fungible tokens
-                for (const nft of this._nfts) {
-                    if (nonFungibleHoldingsByOwner[tokenOwnerAddress] === undefined) {
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress] = {};
-                    }
-                    if (nonFungibleHoldingsByOwner[tokenOwnerAddress][tokenAddress] === undefined) {
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress][tokenAddress] = {};
-                    }
-                    if (
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress][tokenAddress][nft.tokenId.toString()] ===
-                        undefined
-                    ) {
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress][tokenAddress][nft.tokenId.toString()] = [];
-                    }
-                    const isOwner = balances[i++];
-                    if (isOwner.isEqualTo(1)) {
-                        nonFungibleHoldingsByOwner[tokenOwnerAddress][tokenAddress][nft.tokenId.toString()].push(
-                            nft.id,
-                        );
-                    }
-                }
-            }
-        }
-        const holdingsByOwner = {
-            fungible: tokenHoldingsByOwner,
-            nonFungible: nonFungibleHoldingsByOwner,
-        };
-        return holdingsByOwner;
-    }
-    /**
-     * @dev Set the approval for the proxy on behalf of `userAddress` .
-     * @param userAddress owner of ERC1155 tokens.
-     * @param contractAddress address of ERC1155 contract.
-     * @param isApproved Whether to approve the proxy for all or not.
-     */
-    public async setProxyAllowanceForAllAsync(
-        userAddress: string,
-        contractAddress: string,
-        isApproved: boolean,
-    ): Promise<void> {
-        this._validateProxyContractExistsOrThrow();
-        const tokenWrapper = this.getContractWrapper(contractAddress);
-        const operator = (this._proxyContract as ERC1155ProxyContract).address;
-        await tokenWrapper.setApprovalForAllAsync(userAddress, operator, isApproved);
-    }
-    /**
-     * @dev Checks if proxy is approved to transfer tokens on behalf of `userAddress`.
-     * @param userAddress owner of ERC1155 tokens.
-     * @param contractAddress address of ERC1155 contract.
-     * @return True iff the proxy is approved for all. False otherwise.
-     */
-    public async isProxyApprovedForAllAsync(userAddress: string, contractAddress: string): Promise<boolean> {
-        this._validateProxyContractExistsOrThrow();
-        const tokenContract = this._getContractFromAddress(contractAddress);
-        const operator = (this._proxyContract as ERC1155ProxyContract).address;
-        const didApproveAll = await tokenContract.isApprovedForAll(userAddress, operator).callAsync();
-        return didApproveAll;
-    }
-    public getFungibleTokenIds(): BigNumber[] {
-        const fungibleTokenIds = _.map(this._fungibleTokenIds, (tokenIdAsString: string) => {
-            return new BigNumber(tokenIdAsString);
-        });
-        return fungibleTokenIds;
-    }
-    public getNonFungibleTokenIds(): BigNumber[] {
-        const nonFungibleTokenIds = _.map(this._nonFungibleTokenIds, (tokenIdAsString: string) => {
-            return new BigNumber(tokenIdAsString);
-        });
-        return nonFungibleTokenIds;
-    }
-    public getTokenOwnerAddresses(): string[] {
-        return this._tokenOwnerAddresses;
-    }
-    public getContractWrapper(contractAddress: string): Erc1155Wrapper {
-        const tokenWrapper = _.find(this._dummyTokenWrappers, (wrapper: Erc1155Wrapper) => {
-            return wrapper.getContract().address === contractAddress;
-        });
-        if (tokenWrapper === undefined) {
-            throw new Error(`Contract: ${contractAddress} was not deployed through ERC1155ProxyWrapper`);
-        }
-        return tokenWrapper;
-    }
-    private _getContractFromAddress(tokenAddress: string): ERC1155MintableContract {
-        const tokenContractIfExists = _.find(this._dummyTokenWrappers, c => c.getContract().address === tokenAddress);
-        if (tokenContractIfExists === undefined) {
-            throw new Error(`Token: ${tokenAddress} was not deployed through ERC1155ProxyWrapper`);
-        }
-        return tokenContractIfExists.getContract();
-    }
-    private _validateDummyTokenContractsExistOrThrow(): void {
-        if (this._dummyTokenWrappers === undefined) {
-            throw new Error('Dummy ERC1155 tokens not yet deployed, please call "deployDummyTokensAsync"');
-        }
-    }
-    private _validateProxyContractExistsOrThrow(): void {
-        if (this._proxyContract === undefined) {
-            throw new Error('ERC1155 proxy contract not yet deployed, please call "deployProxyAsync"');
-        }
-    }
-    private _validateBalancesAndAllowancesSetOrThrow(): void {
-        if (
-            _.keys(this._initialTokenIdsByOwner.fungible).length === 0 ||
-            _.keys(this._initialTokenIdsByOwner.nonFungible).length === 0
-        ) {
-            throw new Error(
-                'Dummy ERC1155 balances and allowances not yet set, please call "setBalancesAndAllowancesAsync"',
-            );
-        }
-    }
-}

contracts/asset-proxy/src/erc20_wrapper.ts

@@ -1,164 +0,0 @@
-import { artifacts as erc20Artifacts, DummyERC20TokenContract } from '@0x/contracts-erc20';
-import { constants, ERC20BalancesByOwner, txDefaults } from '@0x/contracts-test-utils';
-import { BigNumber } from '@0x/utils';
-import { ZeroExProvider } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-
-import { ERC20ProxyContract, IAssetDataContract } from './wrappers';
-
-export class ERC20Wrapper {
-    private readonly _tokenOwnerAddresses: string[];
-    private readonly _contractOwnerAddress: string;
-    private readonly _provider: ZeroExProvider;
-    private readonly _dummyTokenContracts: DummyERC20TokenContract[];
-    private readonly _assetDataInterface: IAssetDataContract;
-    private _proxyContract?: ERC20ProxyContract;
-    private _proxyIdIfExists?: string;
-    /**
-     * Instanitates an ERC20Wrapper
-     * @param provider Web3 provider to use for all JSON RPC requests
-     * @param tokenOwnerAddresses Addresses that we want to endow as owners for dummy ERC20 tokens
-     * @param contractOwnerAddress Desired owner of the contract
-     * Instance of ERC20Wrapper
-     */
-    constructor(provider: ZeroExProvider, tokenOwnerAddresses: string[], contractOwnerAddress: string) {
-        this._dummyTokenContracts = [];
-        this._provider = provider;
-        this._tokenOwnerAddresses = tokenOwnerAddresses;
-        this._contractOwnerAddress = contractOwnerAddress;
-        this._assetDataInterface = new IAssetDataContract(constants.NULL_ADDRESS, provider);
-    }
-    public async deployDummyTokensAsync(
-        numberToDeploy: number,
-        decimals: BigNumber,
-    ): Promise<DummyERC20TokenContract[]> {
-        for (let i = 0; i < numberToDeploy; i++) {
-            this._dummyTokenContracts.push(
-                await DummyERC20TokenContract.deployFrom0xArtifactAsync(
-                    erc20Artifacts.DummyERC20Token,
-                    this._provider,
-                    txDefaults,
-                    artifacts,
-                    constants.DUMMY_TOKEN_NAME,
-                    constants.DUMMY_TOKEN_SYMBOL,
-                    decimals,
-                    constants.DUMMY_TOKEN_TOTAL_SUPPLY,
-                ),
-            );
-        }
-        return this._dummyTokenContracts;
-    }
-    public async deployProxyAsync(): Promise<ERC20ProxyContract> {
-        this._proxyContract = await ERC20ProxyContract.deployFrom0xArtifactAsync(
-            artifacts.ERC20Proxy,
-            this._provider,
-            txDefaults,
-            artifacts,
-        );
-        this._proxyIdIfExists = await this._proxyContract.getProxyId().callAsync();
-        return this._proxyContract;
-    }
-    public getProxyId(): string {
-        this._validateProxyContractExistsOrThrow();
-        return this._proxyIdIfExists as string;
-    }
-    public async setBalancesAndAllowancesAsync(): Promise<void> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateProxyContractExistsOrThrow();
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                await dummyTokenContract
-                    .setBalance(tokenOwnerAddress, constants.INITIAL_ERC20_BALANCE)
-                    .awaitTransactionSuccessAsync({ from: this._contractOwnerAddress });
-                await dummyTokenContract
-                    .approve((this._proxyContract as ERC20ProxyContract).address, constants.INITIAL_ERC20_ALLOWANCE)
-                    .awaitTransactionSuccessAsync({ from: tokenOwnerAddress });
-            }
-        }
-    }
-    public async getBalanceAsync(userAddress: string, assetData: string): Promise<BigNumber> {
-        const tokenContract = await this._getTokenContractFromAssetDataAsync(assetData);
-        const balance = new BigNumber(await tokenContract.balanceOf(userAddress).callAsync());
-        return balance;
-    }
-    public async setBalanceAsync(userAddress: string, assetData: string, amount: BigNumber): Promise<void> {
-        const tokenContract = await this._getTokenContractFromAssetDataAsync(assetData);
-        await tokenContract
-            .setBalance(userAddress, amount)
-            .awaitTransactionSuccessAsync(
-                { from: this._contractOwnerAddress },
-                { pollingIntervalMs: constants.AWAIT_TRANSACTION_MINED_MS },
-            );
-    }
-    public async getProxyAllowanceAsync(userAddress: string, assetData: string): Promise<BigNumber> {
-        const tokenContract = await this._getTokenContractFromAssetDataAsync(assetData);
-        const proxyAddress = (this._proxyContract as ERC20ProxyContract).address;
-        const allowance = new BigNumber(await tokenContract.allowance(userAddress, proxyAddress).callAsync());
-        return allowance;
-    }
-    public async setAllowanceAsync(userAddress: string, assetData: string, amount: BigNumber): Promise<void> {
-        const tokenContract = await this._getTokenContractFromAssetDataAsync(assetData);
-        const proxyAddress = (this._proxyContract as ERC20ProxyContract).address;
-        await tokenContract.approve(proxyAddress, amount).awaitTransactionSuccessAsync({ from: userAddress });
-    }
-    public async getBalancesAsync(): Promise<ERC20BalancesByOwner> {
-        this._validateDummyTokenContractsExistOrThrow();
-        const balancesByOwner: ERC20BalancesByOwner = {};
-        const balances: BigNumber[] = [];
-        const balanceInfo: Array<{ tokenOwnerAddress: string; tokenAddress: string }> = [];
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                balances.push(await dummyTokenContract.balanceOf(tokenOwnerAddress).callAsync());
-                balanceInfo.push({
-                    tokenOwnerAddress,
-                    tokenAddress: dummyTokenContract.address,
-                });
-            }
-        }
-        _.forEach(balances, (balance, balanceIndex) => {
-            const tokenAddress = balanceInfo[balanceIndex].tokenAddress;
-            const tokenOwnerAddress = balanceInfo[balanceIndex].tokenOwnerAddress;
-            if (balancesByOwner[tokenOwnerAddress] === undefined) {
-                balancesByOwner[tokenOwnerAddress] = {};
-            }
-            const wrappedBalance = new BigNumber(balance);
-            balancesByOwner[tokenOwnerAddress][tokenAddress] = wrappedBalance;
-        });
-        return balancesByOwner;
-    }
-    public addDummyTokenContract(dummy: DummyERC20TokenContract): void {
-        if (this._dummyTokenContracts !== undefined) {
-            this._dummyTokenContracts.push(dummy);
-        }
-    }
-    public addTokenOwnerAddress(address: string): void {
-        this._tokenOwnerAddresses.push(address);
-    }
-    public getTokenOwnerAddresses(): string[] {
-        return this._tokenOwnerAddresses;
-    }
-    public getTokenAddresses(): string[] {
-        const tokenAddresses = _.map(this._dummyTokenContracts, dummyTokenContract => dummyTokenContract.address);
-        return tokenAddresses;
-    }
-    private async _getTokenContractFromAssetDataAsync(assetData: string): Promise<DummyERC20TokenContract> {
-        const tokenAddress = this._assetDataInterface.getABIDecodedTransactionData<string>('ERC20Token', assetData); // tslint:disable-line:no-unused-variable
-        const tokenContractIfExists = _.find(this._dummyTokenContracts, c => c.address === tokenAddress);
-        if (tokenContractIfExists === undefined) {
-            throw new Error(`Token: ${tokenAddress} was not deployed through ERC20Wrapper`);
-        }
-        return tokenContractIfExists;
-    }
-    private _validateDummyTokenContractsExistOrThrow(): void {
-        if (this._dummyTokenContracts === undefined) {
-            throw new Error('Dummy ERC20 tokens not yet deployed, please call "deployDummyTokensAsync"');
-        }
-    }
-    private _validateProxyContractExistsOrThrow(): void {
-        if (this._proxyContract === undefined) {
-            throw new Error('ERC20 proxy contract not yet deployed, please call "deployProxyAsync"');
-        }
-    }
-}

contracts/asset-proxy/src/erc721_wrapper.ts

@@ -1,220 +0,0 @@
-import { artifacts as erc721Artifacts, DummyERC721TokenContract } from '@0x/contracts-erc721';
-import { constants, ERC721TokenIdsByOwner, txDefaults } from '@0x/contracts-test-utils';
-import { generatePseudoRandomSalt } from '@0x/order-utils';
-import { BigNumber } from '@0x/utils';
-import { ZeroExProvider } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-
-import { ERC721ProxyContract } from './wrappers';
-
-export class ERC721Wrapper {
-    private readonly _tokenOwnerAddresses: string[];
-    private readonly _contractOwnerAddress: string;
-    private readonly _provider: ZeroExProvider;
-    private readonly _dummyTokenContracts: DummyERC721TokenContract[];
-    private _proxyContract?: ERC721ProxyContract;
-    private _proxyIdIfExists?: string;
-    private _initialTokenIdsByOwner: ERC721TokenIdsByOwner = {};
-    constructor(provider: ZeroExProvider, tokenOwnerAddresses: string[], contractOwnerAddress: string) {
-        this._provider = provider;
-        this._dummyTokenContracts = [];
-        this._tokenOwnerAddresses = tokenOwnerAddresses;
-        this._contractOwnerAddress = contractOwnerAddress;
-    }
-    public async deployDummyTokensAsync(): Promise<DummyERC721TokenContract[]> {
-        // tslint:disable-next-line:no-unused-variable
-        for (const i of _.times(constants.NUM_DUMMY_ERC721_TO_DEPLOY)) {
-            this._dummyTokenContracts.push(
-                await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                    erc721Artifacts.DummyERC721Token,
-                    this._provider,
-                    txDefaults,
-                    artifacts,
-                    constants.DUMMY_TOKEN_NAME,
-                    constants.DUMMY_TOKEN_SYMBOL,
-                ),
-            );
-        }
-        return this._dummyTokenContracts;
-    }
-    public async deployProxyAsync(): Promise<ERC721ProxyContract> {
-        this._proxyContract = await ERC721ProxyContract.deployFrom0xArtifactAsync(
-            artifacts.ERC721Proxy,
-            this._provider,
-            txDefaults,
-            artifacts,
-        );
-        this._proxyIdIfExists = await this._proxyContract.getProxyId().callAsync();
-        return this._proxyContract;
-    }
-    public getProxyId(): string {
-        this._validateProxyContractExistsOrThrow();
-        return this._proxyIdIfExists as string;
-    }
-    public async setBalancesAndAllowancesAsync(): Promise<void> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateProxyContractExistsOrThrow();
-        this._initialTokenIdsByOwner = {};
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                // tslint:disable-next-line:no-unused-variable
-                for (const i of _.times(constants.NUM_ERC721_TOKENS_TO_MINT)) {
-                    const tokenId = generatePseudoRandomSalt();
-                    await this.mintAsync(dummyTokenContract.address, tokenId, tokenOwnerAddress);
-                    if (this._initialTokenIdsByOwner[tokenOwnerAddress] === undefined) {
-                        this._initialTokenIdsByOwner[tokenOwnerAddress] = {
-                            [dummyTokenContract.address]: [],
-                        };
-                    }
-                    if (this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address] === undefined) {
-                        this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address] = [];
-                    }
-                    this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address].push(tokenId);
-
-                    await this.approveProxyForAllAsync(dummyTokenContract.address, tokenOwnerAddress, true);
-                }
-            }
-        }
-    }
-    public async doesTokenExistAsync(tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const owner = await tokenContract.ownerOf(tokenId).callAsync();
-        const doesExist = owner !== constants.NULL_ADDRESS;
-        return doesExist;
-    }
-    public async approveProxyAsync(tokenAddress: string, tokenId: BigNumber): Promise<void> {
-        const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
-        await this.approveAsync(proxyAddress, tokenAddress, tokenId);
-    }
-    public async approveProxyForAllAsync(
-        tokenAddress: string,
-        ownerAddress: string,
-        isApproved: boolean,
-    ): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
-        await tokenContract.setApprovalForAll(proxyAddress, isApproved).awaitTransactionSuccessAsync({
-            from: ownerAddress,
-        });
-    }
-    public async approveAsync(to: string, tokenAddress: string, tokenId: BigNumber): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const tokenOwner = await this.ownerOfAsync(tokenAddress, tokenId);
-        await tokenContract.approve(to, tokenId).awaitTransactionSuccessAsync({ from: tokenOwner });
-    }
-    public async transferFromAsync(
-        tokenAddress: string,
-        tokenId: BigNumber,
-        currentOwner: string,
-        userAddress: string,
-    ): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        await tokenContract.transferFrom(currentOwner, userAddress, tokenId).awaitTransactionSuccessAsync({
-            from: currentOwner,
-        });
-    }
-    public async mintAsync(tokenAddress: string, tokenId: BigNumber, userAddress: string): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        await tokenContract.mint(userAddress, tokenId).awaitTransactionSuccessAsync({
-            from: this._contractOwnerAddress,
-        });
-    }
-    public async burnAsync(tokenAddress: string, tokenId: BigNumber, owner: string): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        await tokenContract.burn(owner, tokenId).awaitTransactionSuccessAsync({ from: this._contractOwnerAddress });
-    }
-    public async ownerOfAsync(tokenAddress: string, tokenId: BigNumber): Promise<string> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const owner = await tokenContract.ownerOf(tokenId).callAsync();
-        return owner;
-    }
-    public async isOwnerAsync(userAddress: string, tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const tokenOwner = await tokenContract.ownerOf(tokenId).callAsync();
-        const isOwner = tokenOwner === userAddress;
-        return isOwner;
-    }
-    public async isProxyApprovedForAllAsync(userAddress: string, tokenAddress: string): Promise<boolean> {
-        this._validateProxyContractExistsOrThrow();
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const operator = (this._proxyContract as ERC721ProxyContract).address;
-        const didApproveAll = await tokenContract.isApprovedForAll(userAddress, operator).callAsync();
-        return didApproveAll;
-    }
-    public async isProxyApprovedAsync(tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
-        this._validateProxyContractExistsOrThrow();
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const approvedAddress = await tokenContract.getApproved(tokenId).callAsync();
-        const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
-        const isProxyAnApprovedOperator = approvedAddress === proxyAddress;
-        return isProxyAnApprovedOperator;
-    }
-    public async getBalancesAsync(): Promise<ERC721TokenIdsByOwner> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateBalancesAndAllowancesSetOrThrow();
-        const tokenIdsByOwner: ERC721TokenIdsByOwner = {};
-        const tokenOwnerAddresses: string[] = [];
-        const tokenInfo: Array<{ tokenId: BigNumber; tokenAddress: string }> = [];
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                const initialTokenOwnerIds = this._initialTokenIdsByOwner[tokenOwnerAddress][
-                    dummyTokenContract.address
-                ];
-                for (const tokenId of initialTokenOwnerIds) {
-                    tokenOwnerAddresses.push(await dummyTokenContract.ownerOf(tokenId).callAsync());
-                    tokenInfo.push({
-                        tokenId,
-                        tokenAddress: dummyTokenContract.address,
-                    });
-                }
-            }
-        }
-        _.forEach(tokenOwnerAddresses, (tokenOwnerAddress, ownerIndex) => {
-            const tokenAddress = tokenInfo[ownerIndex].tokenAddress;
-            const tokenId = tokenInfo[ownerIndex].tokenId;
-            if (tokenIdsByOwner[tokenOwnerAddress] === undefined) {
-                tokenIdsByOwner[tokenOwnerAddress] = {
-                    [tokenAddress]: [],
-                };
-            }
-            if (tokenIdsByOwner[tokenOwnerAddress][tokenAddress] === undefined) {
-                tokenIdsByOwner[tokenOwnerAddress][tokenAddress] = [];
-            }
-            tokenIdsByOwner[tokenOwnerAddress][tokenAddress].push(tokenId);
-        });
-        return tokenIdsByOwner;
-    }
-    public getTokenOwnerAddresses(): string[] {
-        return this._tokenOwnerAddresses;
-    }
-    public getTokenAddresses(): string[] {
-        const tokenAddresses = _.map(this._dummyTokenContracts, dummyTokenContract => dummyTokenContract.address);
-        return tokenAddresses;
-    }
-    private _getTokenContractFromAssetData(tokenAddress: string): DummyERC721TokenContract {
-        const tokenContractIfExists = _.find(this._dummyTokenContracts, c => c.address === tokenAddress);
-        if (tokenContractIfExists === undefined) {
-            throw new Error(`Token: ${tokenAddress} was not deployed through ERC20Wrapper`);
-        }
-        return tokenContractIfExists;
-    }
-    private _validateDummyTokenContractsExistOrThrow(): void {
-        if (this._dummyTokenContracts === undefined) {
-            throw new Error('Dummy ERC721 tokens not yet deployed, please call "deployDummyTokensAsync"');
-        }
-    }
-    private _validateProxyContractExistsOrThrow(): void {
-        if (this._proxyContract === undefined) {
-            throw new Error('ERC721 proxy contract not yet deployed, please call "deployProxyAsync"');
-        }
-    }
-    private _validateBalancesAndAllowancesSetOrThrow(): void {
-        if (_.keys(this._initialTokenIdsByOwner).length === 0) {
-            throw new Error(
-                'Dummy ERC721 balances and allowances not yet set, please call "setBalancesAndAllowancesAsync"',
-            );
-        }
-    }
-}

contracts/asset-proxy/src/index.ts

@@ -1,93 +0,0 @@
-export { artifacts } from './artifacts';
-export {
-    BalancerBridgeContract,
-    ChaiBridgeContract,
-    ERC1155ProxyContract,
-    ERC20BridgeProxyContract,
-    ERC20ProxyContract,
-    ERC721ProxyContract,
-    Eth2DaiBridgeContract,
-    DydxBridgeContract,
-    IAssetDataContract,
-    IAssetProxyContract,
-    IChaiContract,
-    IDydxContract,
-    KyberBridgeContract,
-    MultiAssetProxyContract,
-    StaticCallProxyContract,
-    TestDydxBridgeContract,
-    TestStaticCallTargetContract,
-    UniswapBridgeContract,
-    DexForwarderBridgeContract,
-} from './wrappers';
-
-export { ERC20Wrapper } from './erc20_wrapper';
-export { ERC721Wrapper } from './erc721_wrapper';
-export { ERC1155ProxyWrapper } from './erc1155_proxy_wrapper';
-export { ERC1155MintableContract, Erc1155Wrapper } from '@0x/contracts-erc1155';
-export { DummyERC20TokenContract } from '@0x/contracts-erc20';
-export { DummyERC721TokenContract } from '@0x/contracts-erc721';
-export { AssetProxyId } from '@0x/types';
-export {
-    ERC1155HoldingsByOwner,
-    ERC20BalancesByOwner,
-    ERC721TokenIdsByOwner,
-    ERC1155FungibleHoldingsByOwner,
-    ERC1155NonFungibleHoldingsByOwner,
-} from '@0x/contracts-test-utils';
-export {
-    TransactionReceiptWithDecodedLogs,
-    Provider,
-    ZeroExProvider,
-    JSONRPCRequestPayload,
-    JSONRPCErrorCallback,
-    TransactionReceiptStatus,
-    JSONRPCResponsePayload,
-    JSONRPCResponseError,
-    ContractArtifact,
-    ContractChains,
-    CompilerOpts,
-    StandardContractOutput,
-    CompilerSettings,
-    ContractChainData,
-    ContractAbi,
-    DevdocOutput,
-    EvmOutput,
-    CompilerSettingsMetadata,
-    OptimizerSettings,
-    OutputField,
-    ParamDescription,
-    EvmBytecodeOutput,
-    EvmBytecodeOutputLinkReferences,
-    AbiDefinition,
-    FunctionAbi,
-    EventAbi,
-    RevertErrorAbi,
-    EventParameter,
-    DataItem,
-    MethodAbi,
-    ConstructorAbi,
-    FallbackAbi,
-    ConstructorStateMutability,
-    TupleDataItem,
-    StateMutability,
-} from 'ethereum-types';
-
-export {
-    decodeERC1155AssetData,
-    decodeERC20AssetData,
-    decodeERC20BridgeAssetData,
-    decodeERC721AssetData,
-    decodeMultiAssetData,
-    decodeStaticCallAssetData,
-    encodeERC1155AssetData,
-    encodeERC20AssetData,
-    encodeERC20BridgeAssetData,
-    encodeERC721AssetData,
-    encodeMultiAssetData,
-    encodeStaticCallAssetData,
-    getAssetDataProxyId,
-} from './asset_data';
-
-export * from './dydx_bridge_encoder';
-export * from './dex_forwarder_bridge';

contracts/asset-proxy/src/wrappers.ts

@@ -1,64 +0,0 @@
-/*
- * -----------------------------------------------------------------------------
- * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
- * -----------------------------------------------------------------------------
- */
-export * from '../generated-wrappers/balancer_bridge';
-export * from '../generated-wrappers/bancor_bridge';
-export * from '../generated-wrappers/chai_bridge';
-export * from '../generated-wrappers/cream_bridge';
-export * from '../generated-wrappers/crypto_com_bridge';
-export * from '../generated-wrappers/curve_bridge';
-export * from '../generated-wrappers/d_o_d_o_bridge';
-export * from '../generated-wrappers/dex_forwarder_bridge';
-export * from '../generated-wrappers/dydx_bridge';
-export * from '../generated-wrappers/erc1155_proxy';
-export * from '../generated-wrappers/erc20_bridge_proxy';
-export * from '../generated-wrappers/erc20_proxy';
-export * from '../generated-wrappers/erc721_proxy';
-export * from '../generated-wrappers/eth2_dai_bridge';
-export * from '../generated-wrappers/i_asset_data';
-export * from '../generated-wrappers/i_asset_proxy';
-export * from '../generated-wrappers/i_asset_proxy_dispatcher';
-export * from '../generated-wrappers/i_authorizable';
-export * from '../generated-wrappers/i_balancer_pool';
-export * from '../generated-wrappers/i_bancor_network';
-export * from '../generated-wrappers/i_chai';
-export * from '../generated-wrappers/i_curve';
-export * from '../generated-wrappers/i_dydx';
-export * from '../generated-wrappers/i_dydx_bridge';
-export * from '../generated-wrappers/i_erc20_bridge';
-export * from '../generated-wrappers/i_eth2_dai';
-export * from '../generated-wrappers/i_gas_token';
-export * from '../generated-wrappers/i_kyber_network_proxy';
-export * from '../generated-wrappers/i_m_stable';
-export * from '../generated-wrappers/i_mooniswap';
-export * from '../generated-wrappers/i_shell';
-export * from '../generated-wrappers/i_uniswap_exchange';
-export * from '../generated-wrappers/i_uniswap_exchange_factory';
-export * from '../generated-wrappers/i_uniswap_v2_router01';
-export * from '../generated-wrappers/kyber_bridge';
-export * from '../generated-wrappers/m_stable_bridge';
-export * from '../generated-wrappers/mixin_asset_proxy_dispatcher';
-export * from '../generated-wrappers/mixin_authorizable';
-export * from '../generated-wrappers/mixin_gas_token';
-export * from '../generated-wrappers/mooniswap_bridge';
-export * from '../generated-wrappers/multi_asset_proxy';
-export * from '../generated-wrappers/ownable';
-export * from '../generated-wrappers/shell_bridge';
-export * from '../generated-wrappers/snow_swap_bridge';
-export * from '../generated-wrappers/static_call_proxy';
-export * from '../generated-wrappers/sushi_swap_bridge';
-export * from '../generated-wrappers/swerve_bridge';
-export * from '../generated-wrappers/test_bancor_bridge';
-export * from '../generated-wrappers/test_chai_bridge';
-export * from '../generated-wrappers/test_dex_forwarder_bridge';
-export * from '../generated-wrappers/test_dydx_bridge';
-export * from '../generated-wrappers/test_erc20_bridge';
-export * from '../generated-wrappers/test_eth2_dai_bridge';
-export * from '../generated-wrappers/test_kyber_bridge';
-export * from '../generated-wrappers/test_static_call_target';
-export * from '../generated-wrappers/test_uniswap_bridge';
-export * from '../generated-wrappers/test_uniswap_v2_bridge';
-export * from '../generated-wrappers/uniswap_bridge';
-export * from '../generated-wrappers/uniswap_v2_bridge';

contracts/asset-proxy/test/artifacts.ts

@@ -1,127 +0,0 @@
-/*
- * -----------------------------------------------------------------------------
- * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
- * -----------------------------------------------------------------------------
- */
-import { ContractArtifact } from 'ethereum-types';
-
-import * as BalancerBridge from '../test/generated-artifacts/BalancerBridge.json';
-import * as BancorBridge from '../test/generated-artifacts/BancorBridge.json';
-import * as ChaiBridge from '../test/generated-artifacts/ChaiBridge.json';
-import * as CreamBridge from '../test/generated-artifacts/CreamBridge.json';
-import * as CryptoComBridge from '../test/generated-artifacts/CryptoComBridge.json';
-import * as CurveBridge from '../test/generated-artifacts/CurveBridge.json';
-import * as DexForwarderBridge from '../test/generated-artifacts/DexForwarderBridge.json';
-import * as DODOBridge from '../test/generated-artifacts/DODOBridge.json';
-import * as DydxBridge from '../test/generated-artifacts/DydxBridge.json';
-import * as ERC1155Proxy from '../test/generated-artifacts/ERC1155Proxy.json';
-import * as ERC20BridgeProxy from '../test/generated-artifacts/ERC20BridgeProxy.json';
-import * as ERC20Proxy from '../test/generated-artifacts/ERC20Proxy.json';
-import * as ERC721Proxy from '../test/generated-artifacts/ERC721Proxy.json';
-import * as Eth2DaiBridge from '../test/generated-artifacts/Eth2DaiBridge.json';
-import * as IAssetData from '../test/generated-artifacts/IAssetData.json';
-import * as IAssetProxy from '../test/generated-artifacts/IAssetProxy.json';
-import * as IAssetProxyDispatcher from '../test/generated-artifacts/IAssetProxyDispatcher.json';
-import * as IAuthorizable from '../test/generated-artifacts/IAuthorizable.json';
-import * as IBalancerPool from '../test/generated-artifacts/IBalancerPool.json';
-import * as IBancorNetwork from '../test/generated-artifacts/IBancorNetwork.json';
-import * as IChai from '../test/generated-artifacts/IChai.json';
-import * as ICurve from '../test/generated-artifacts/ICurve.json';
-import * as IDydx from '../test/generated-artifacts/IDydx.json';
-import * as IDydxBridge from '../test/generated-artifacts/IDydxBridge.json';
-import * as IERC20Bridge from '../test/generated-artifacts/IERC20Bridge.json';
-import * as IEth2Dai from '../test/generated-artifacts/IEth2Dai.json';
-import * as IGasToken from '../test/generated-artifacts/IGasToken.json';
-import * as IKyberNetworkProxy from '../test/generated-artifacts/IKyberNetworkProxy.json';
-import * as IMooniswap from '../test/generated-artifacts/IMooniswap.json';
-import * as IMStable from '../test/generated-artifacts/IMStable.json';
-import * as IShell from '../test/generated-artifacts/IShell.json';
-import * as IUniswapExchange from '../test/generated-artifacts/IUniswapExchange.json';
-import * as IUniswapExchangeFactory from '../test/generated-artifacts/IUniswapExchangeFactory.json';
-import * as IUniswapV2Router01 from '../test/generated-artifacts/IUniswapV2Router01.json';
-import * as KyberBridge from '../test/generated-artifacts/KyberBridge.json';
-import * as MixinAssetProxyDispatcher from '../test/generated-artifacts/MixinAssetProxyDispatcher.json';
-import * as MixinAuthorizable from '../test/generated-artifacts/MixinAuthorizable.json';
-import * as MixinGasToken from '../test/generated-artifacts/MixinGasToken.json';
-import * as MooniswapBridge from '../test/generated-artifacts/MooniswapBridge.json';
-import * as MStableBridge from '../test/generated-artifacts/MStableBridge.json';
-import * as MultiAssetProxy from '../test/generated-artifacts/MultiAssetProxy.json';
-import * as Ownable from '../test/generated-artifacts/Ownable.json';
-import * as ShellBridge from '../test/generated-artifacts/ShellBridge.json';
-import * as SnowSwapBridge from '../test/generated-artifacts/SnowSwapBridge.json';
-import * as StaticCallProxy from '../test/generated-artifacts/StaticCallProxy.json';
-import * as SushiSwapBridge from '../test/generated-artifacts/SushiSwapBridge.json';
-import * as SwerveBridge from '../test/generated-artifacts/SwerveBridge.json';
-import * as TestBancorBridge from '../test/generated-artifacts/TestBancorBridge.json';
-import * as TestChaiBridge from '../test/generated-artifacts/TestChaiBridge.json';
-import * as TestDexForwarderBridge from '../test/generated-artifacts/TestDexForwarderBridge.json';
-import * as TestDydxBridge from '../test/generated-artifacts/TestDydxBridge.json';
-import * as TestERC20Bridge from '../test/generated-artifacts/TestERC20Bridge.json';
-import * as TestEth2DaiBridge from '../test/generated-artifacts/TestEth2DaiBridge.json';
-import * as TestKyberBridge from '../test/generated-artifacts/TestKyberBridge.json';
-import * as TestStaticCallTarget from '../test/generated-artifacts/TestStaticCallTarget.json';
-import * as TestUniswapBridge from '../test/generated-artifacts/TestUniswapBridge.json';
-import * as TestUniswapV2Bridge from '../test/generated-artifacts/TestUniswapV2Bridge.json';
-import * as UniswapBridge from '../test/generated-artifacts/UniswapBridge.json';
-import * as UniswapV2Bridge from '../test/generated-artifacts/UniswapV2Bridge.json';
-export const artifacts = {
-    MixinAssetProxyDispatcher: MixinAssetProxyDispatcher as ContractArtifact,
-    MixinAuthorizable: MixinAuthorizable as ContractArtifact,
-    Ownable: Ownable as ContractArtifact,
-    ERC1155Proxy: ERC1155Proxy as ContractArtifact,
-    ERC20BridgeProxy: ERC20BridgeProxy as ContractArtifact,
-    ERC20Proxy: ERC20Proxy as ContractArtifact,
-    ERC721Proxy: ERC721Proxy as ContractArtifact,
-    MultiAssetProxy: MultiAssetProxy as ContractArtifact,
-    StaticCallProxy: StaticCallProxy as ContractArtifact,
-    BalancerBridge: BalancerBridge as ContractArtifact,
-    BancorBridge: BancorBridge as ContractArtifact,
-    ChaiBridge: ChaiBridge as ContractArtifact,
-    CreamBridge: CreamBridge as ContractArtifact,
-    CryptoComBridge: CryptoComBridge as ContractArtifact,
-    CurveBridge: CurveBridge as ContractArtifact,
-    DODOBridge: DODOBridge as ContractArtifact,
-    DexForwarderBridge: DexForwarderBridge as ContractArtifact,
-    DydxBridge: DydxBridge as ContractArtifact,
-    Eth2DaiBridge: Eth2DaiBridge as ContractArtifact,
-    KyberBridge: KyberBridge as ContractArtifact,
-    MStableBridge: MStableBridge as ContractArtifact,
-    MixinGasToken: MixinGasToken as ContractArtifact,
-    MooniswapBridge: MooniswapBridge as ContractArtifact,
-    ShellBridge: ShellBridge as ContractArtifact,
-    SnowSwapBridge: SnowSwapBridge as ContractArtifact,
-    SushiSwapBridge: SushiSwapBridge as ContractArtifact,
-    SwerveBridge: SwerveBridge as ContractArtifact,
-    UniswapBridge: UniswapBridge as ContractArtifact,
-    UniswapV2Bridge: UniswapV2Bridge as ContractArtifact,
-    IAssetData: IAssetData as ContractArtifact,
-    IAssetProxy: IAssetProxy as ContractArtifact,
-    IAssetProxyDispatcher: IAssetProxyDispatcher as ContractArtifact,
-    IAuthorizable: IAuthorizable as ContractArtifact,
-    IBalancerPool: IBalancerPool as ContractArtifact,
-    IBancorNetwork: IBancorNetwork as ContractArtifact,
-    IChai: IChai as ContractArtifact,
-    ICurve: ICurve as ContractArtifact,
-    IDydx: IDydx as ContractArtifact,
-    IDydxBridge: IDydxBridge as ContractArtifact,
-    IERC20Bridge: IERC20Bridge as ContractArtifact,
-    IEth2Dai: IEth2Dai as ContractArtifact,
-    IGasToken: IGasToken as ContractArtifact,
-    IKyberNetworkProxy: IKyberNetworkProxy as ContractArtifact,
-    IMStable: IMStable as ContractArtifact,
-    IMooniswap: IMooniswap as ContractArtifact,
-    IShell: IShell as ContractArtifact,
-    IUniswapExchange: IUniswapExchange as ContractArtifact,
-    IUniswapExchangeFactory: IUniswapExchangeFactory as ContractArtifact,
-    IUniswapV2Router01: IUniswapV2Router01 as ContractArtifact,
-    TestBancorBridge: TestBancorBridge as ContractArtifact,
-    TestChaiBridge: TestChaiBridge as ContractArtifact,
-    TestDexForwarderBridge: TestDexForwarderBridge as ContractArtifact,
-    TestDydxBridge: TestDydxBridge as ContractArtifact,
-    TestERC20Bridge: TestERC20Bridge as ContractArtifact,
-    TestEth2DaiBridge: TestEth2DaiBridge as ContractArtifact,
-    TestKyberBridge: TestKyberBridge as ContractArtifact,
-    TestStaticCallTarget: TestStaticCallTarget as ContractArtifact,
-    TestUniswapBridge: TestUniswapBridge as ContractArtifact,
-    TestUniswapV2Bridge: TestUniswapV2Bridge as ContractArtifact,
-};

contracts/asset-proxy/test/authorizable.ts

@@ -1,128 +0,0 @@
-import { blockchainTests, expect, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { RevertReason } from '@0x/types';
-import { BigNumber } from '@0x/utils';
-
-import { artifacts } from './artifacts';
-
-import { MixinAuthorizableContract } from './wrappers';
-
-blockchainTests.resets('Authorizable', () => {
-    let owner: string;
-    let notOwner: string;
-    let address: string;
-    let authorizable: MixinAuthorizableContract;
-
-    before(async () => {
-        const accounts = await web3Wrapper.getAvailableAddressesAsync();
-        [owner, address, notOwner] = accounts.slice(0, 3);
-        authorizable = await MixinAuthorizableContract.deployFrom0xArtifactAsync(
-            artifacts.MixinAuthorizable,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-    });
-
-    describe('addAuthorizedAddress', () => {
-        it('should revert if not called by owner', async () => {
-            const tx = authorizable.addAuthorizedAddress(notOwner).sendTransactionAsync({ from: notOwner });
-            return expect(tx).to.revertWith(RevertReason.OnlyContractOwner);
-        });
-
-        it('should allow owner to add an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.true();
-        });
-
-        it('should revert if owner attempts to authorize a duplicate address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const tx = authorizable.addAuthorizedAddress(address).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(RevertReason.TargetAlreadyAuthorized);
-        });
-    });
-
-    describe('removeAuthorizedAddress', () => {
-        it('should revert if not called by owner', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const tx = authorizable.removeAuthorizedAddress(address).sendTransactionAsync({ from: notOwner });
-            return expect(tx).to.revertWith(RevertReason.OnlyContractOwner);
-        });
-
-        it('should allow owner to remove an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            await authorizable.removeAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.false();
-        });
-
-        it('should revert if owner attempts to remove an address that is not authorized', async () => {
-            const tx = authorizable.removeAuthorizedAddress(address).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(RevertReason.TargetNotAuthorized);
-        });
-    });
-
-    describe('removeAuthorizedAddressAtIndex', () => {
-        it('should revert if not called by owner', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(0);
-            const tx = authorizable
-                .removeAuthorizedAddressAtIndex(address, index)
-                .sendTransactionAsync({ from: notOwner });
-            return expect(tx).to.revertWith(RevertReason.OnlyContractOwner);
-        });
-
-        it('should revert if index is >= authorities.length', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(1);
-            const tx = authorizable
-                .removeAuthorizedAddressAtIndex(address, index)
-                .sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(RevertReason.IndexOutOfBounds);
-        });
-
-        it('should revert if owner attempts to remove an address that is not authorized', async () => {
-            const index = new BigNumber(0);
-            const tx = authorizable
-                .removeAuthorizedAddressAtIndex(address, index)
-                .sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(RevertReason.TargetNotAuthorized);
-        });
-
-        it('should revert if address at index does not match target', async () => {
-            const address1 = address;
-            const address2 = notOwner;
-            await authorizable.addAuthorizedAddress(address1).awaitTransactionSuccessAsync({ from: owner });
-            await authorizable.addAuthorizedAddress(address2).awaitTransactionSuccessAsync({ from: owner });
-            const address1Index = new BigNumber(0);
-            const tx = authorizable
-                .removeAuthorizedAddressAtIndex(address2, address1Index)
-                .sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(RevertReason.AuthorizedAddressMismatch);
-        });
-
-        it('should allow owner to remove an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(0);
-            await authorizable.removeAuthorizedAddressAtIndex(address, index).awaitTransactionSuccessAsync({
-                from: owner,
-            });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.false();
-        });
-    });
-
-    describe('getAuthorizedAddresses', () => {
-        it('should return all authorized addresses', async () => {
-            const initial = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(initial).to.have.length(0);
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const afterAdd = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(afterAdd).to.have.length(1);
-            expect(afterAdd).to.include(address);
-            await authorizable.removeAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const afterRemove = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(afterRemove).to.have.length(0);
-        });
-    });
-});

contracts/asset-proxy/test/bancor_bridge.ts

@@ -1,185 +0,0 @@
-import {
-    blockchainTests,
-    constants,
-    expect,
-    filterLogsToArguments,
-    getRandomInteger,
-    randomAddress,
-} from '@0x/contracts-test-utils';
-import { AssetProxyId } from '@0x/types';
-import { AbiEncoder, BigNumber, hexUtils } from '@0x/utils';
-import { DecodedLogs } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestBancorBridgeContract } from './generated-wrappers/test_bancor_bridge';
-import {
-    TestBancorBridgeConvertByPathInputEventArgs as ConvertByPathArgs,
-    TestBancorBridgeEvents as ContractEvents,
-    TestBancorBridgeTokenApproveEventArgs as TokenApproveArgs,
-} from './wrappers';
-
-blockchainTests.resets('Bancor unit tests', env => {
-    const FROM_TOKEN_DECIMALS = 6;
-    const TO_TOKEN_DECIMALS = 18;
-    const FROM_TOKEN_BASE = new BigNumber(10).pow(FROM_TOKEN_DECIMALS);
-    const TO_TOKEN_BASE = new BigNumber(10).pow(TO_TOKEN_DECIMALS);
-    let testContract: TestBancorBridgeContract;
-
-    before(async () => {
-        testContract = await TestBancorBridgeContract.deployFrom0xArtifactAsync(
-            artifacts.TestBancorBridge,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-    });
-
-    describe('isValidSignature()', () => {
-        it('returns success bytes', async () => {
-            const LEGACY_WALLET_MAGIC_VALUE = '0xb0671381';
-            const result = await testContract
-                .isValidSignature(hexUtils.random(), hexUtils.random(_.random(0, 32)))
-                .callAsync();
-            expect(result).to.eq(LEGACY_WALLET_MAGIC_VALUE);
-        });
-    });
-
-    describe('bridgeTransferFrom()', () => {
-        interface TransferFromOpts {
-            tokenAddressesPath: string[];
-            toAddress: string;
-            // Amount to pass into `bridgeTransferFrom()`
-            amount: BigNumber;
-            // Token balance of the bridge.
-            fromTokenBalance: BigNumber;
-            // Router reverts with this reason
-            routerRevertReason: string;
-        }
-
-        interface TransferFromResult {
-            opts: TransferFromOpts;
-            result: string;
-            logs: DecodedLogs;
-            blocktime: number;
-        }
-
-        function createTransferFromOpts(opts?: Partial<TransferFromOpts>): TransferFromOpts {
-            const amount = getRandomInteger(1, TO_TOKEN_BASE.times(100));
-            return {
-                tokenAddressesPath: Array(3).fill(constants.NULL_ADDRESS),
-                amount,
-                toAddress: randomAddress(),
-                fromTokenBalance: getRandomInteger(1, FROM_TOKEN_BASE.times(100)),
-                routerRevertReason: '',
-                ...opts,
-            };
-        }
-
-        const bridgeDataEncoder = AbiEncoder.create('(address[], address)');
-
-        async function transferFromAsync(opts?: Partial<TransferFromOpts>): Promise<TransferFromResult> {
-            const _opts = createTransferFromOpts(opts);
-
-            for (let i = 0; i < _opts.tokenAddressesPath.length; i++) {
-                const createFromTokenFn = testContract.createToken(_opts.tokenAddressesPath[i]);
-                _opts.tokenAddressesPath[i] = await createFromTokenFn.callAsync();
-                await createFromTokenFn.awaitTransactionSuccessAsync();
-            }
-
-            // Set the token balance for the token we're converting from.
-            await testContract
-                .setTokenBalance(_opts.tokenAddressesPath[0], _opts.fromTokenBalance)
-                .awaitTransactionSuccessAsync();
-
-            // Set revert reason for the router.
-            await testContract.setNetworkRevertReason(_opts.routerRevertReason).awaitTransactionSuccessAsync();
-
-            // Call bridgeTransferFrom().
-            const bridgeTransferFromFn = testContract.bridgeTransferFrom(
-                // Output token
-                _opts.tokenAddressesPath[_opts.tokenAddressesPath.length - 1],
-                // Random maker address.
-                randomAddress(),
-                // Recipient address.
-                _opts.toAddress,
-                // Transfer amount.
-                _opts.amount,
-                // ABI-encode the input token address as the bridge data.
-                bridgeDataEncoder.encode([
-                    _opts.tokenAddressesPath,
-                    await testContract.getNetworkAddress().callAsync(),
-                ]),
-            );
-            const result = await bridgeTransferFromFn.callAsync();
-            const receipt = await bridgeTransferFromFn.awaitTransactionSuccessAsync();
-            return {
-                opts: _opts,
-                result,
-                logs: (receipt.logs as any) as DecodedLogs,
-                blocktime: await env.web3Wrapper.getBlockTimestampAsync(receipt.blockNumber),
-            };
-        }
-
-        it('returns magic bytes on success', async () => {
-            const { result } = await transferFromAsync();
-            expect(result).to.eq(AssetProxyId.ERC20Bridge);
-        });
-
-        describe('token -> token', async () => {
-            it('calls BancorNetwork.convertByPath()', async () => {
-                const { opts, result, logs } = await transferFromAsync();
-                expect(result).to.eq(AssetProxyId.ERC20Bridge, 'asset proxy id');
-                const transfers = filterLogsToArguments<ConvertByPathArgs>(logs, ContractEvents.ConvertByPathInput);
-
-                expect(transfers.length).to.eq(1);
-                expect(transfers[0].toTokenAddress).to.eq(
-                    opts.tokenAddressesPath[opts.tokenAddressesPath.length - 1],
-                    'output token address',
-                );
-                expect(transfers[0].to).to.eq(opts.toAddress, 'recipient address');
-                expect(transfers[0].amountIn).to.bignumber.eq(opts.fromTokenBalance, 'input token amount');
-                expect(transfers[0].amountOutMin).to.bignumber.eq(opts.amount, 'output token amount');
-                expect(transfers[0].feeRecipient).to.eq(constants.NULL_ADDRESS);
-                expect(transfers[0].feeAmount).to.bignumber.eq(new BigNumber(0));
-            });
-
-            it('sets allowance for "from" token', async () => {
-                const { logs } = await transferFromAsync();
-                const approvals = filterLogsToArguments<TokenApproveArgs>(logs, ContractEvents.TokenApprove);
-                const networkAddress = await testContract.getNetworkAddress().callAsync();
-                expect(approvals.length).to.eq(1);
-                expect(approvals[0].spender).to.eq(networkAddress);
-                expect(approvals[0].allowance).to.bignumber.eq(constants.MAX_UINT256);
-            });
-
-            it('fails if the router fails', async () => {
-                const revertReason = 'FOOBAR';
-                const tx = transferFromAsync({
-                    routerRevertReason: revertReason,
-                });
-                return expect(tx).to.eventually.be.rejectedWith(revertReason);
-            });
-        });
-        describe('token -> token -> token', async () => {
-            it('calls BancorNetwork.convertByPath()', async () => {
-                const { opts, result, logs } = await transferFromAsync({
-                    tokenAddressesPath: Array(5).fill(constants.NULL_ADDRESS),
-                });
-                expect(result).to.eq(AssetProxyId.ERC20Bridge, 'asset proxy id');
-                const transfers = filterLogsToArguments<ConvertByPathArgs>(logs, ContractEvents.ConvertByPathInput);
-
-                expect(transfers.length).to.eq(1);
-                expect(transfers[0].toTokenAddress).to.eq(
-                    opts.tokenAddressesPath[opts.tokenAddressesPath.length - 1],
-                    'output token address',
-                );
-                expect(transfers[0].to).to.eq(opts.toAddress, 'recipient address');
-                expect(transfers[0].amountIn).to.bignumber.eq(opts.fromTokenBalance, 'input token amount');
-                expect(transfers[0].amountOutMin).to.bignumber.eq(opts.amount, 'output token amount');
-                expect(transfers[0].feeRecipient).to.eq(constants.NULL_ADDRESS);
-                expect(transfers[0].feeAmount).to.bignumber.eq(new BigNumber(0));
-            });
-        });
-    });
-});

contracts/asset-proxy/test/chai_bridge.ts

@@ -1,60 +0,0 @@
-import { ERC20TokenContract } from '@0x/contracts-erc20';
-import { blockchainTests, constants, expect, randomAddress } from '@0x/contracts-test-utils';
-import { AssetProxyId, RevertReason } from '@0x/types';
-import { BigNumber } from '@0x/utils';
-
-import { artifacts } from './artifacts';
-import { TestChaiBridgeContract } from './wrappers';
-
-blockchainTests.resets('ChaiBridge unit tests', env => {
-    let chaiBridgeContract: TestChaiBridgeContract;
-    let testDaiContract: ERC20TokenContract;
-    let fromAddress: string;
-    let toAddress: string;
-
-    const alwaysRevertAddress = '0x0000000000000000000000000000000000000001';
-    const amount = new BigNumber(1);
-
-    before(async () => {
-        [fromAddress, toAddress] = await env.getAccountAddressesAsync();
-        chaiBridgeContract = await TestChaiBridgeContract.deployFrom0xArtifactAsync(
-            artifacts.TestChaiBridge,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-        const testChaiDaiAddress = await chaiBridgeContract.testChaiDai().callAsync();
-        testDaiContract = new ERC20TokenContract(testChaiDaiAddress, env.provider, env.txDefaults);
-    });
-
-    describe('bridgeTransferFrom()', () => {
-        it('fails if not called by ERC20BridgeProxy', async () => {
-            return expect(
-                chaiBridgeContract
-                    .bridgeTransferFrom(randomAddress(), fromAddress, toAddress, amount, constants.NULL_BYTES)
-                    .awaitTransactionSuccessAsync({ from: alwaysRevertAddress }),
-            ).to.revertWith(RevertReason.ChaiBridgeOnlyCallableByErc20BridgeProxy);
-        });
-        it('returns magic bytes upon success', async () => {
-            const magicBytes = await chaiBridgeContract
-                .bridgeTransferFrom(randomAddress(), fromAddress, toAddress, amount, constants.NULL_BYTES)
-                .callAsync();
-            expect(magicBytes).to.eq(AssetProxyId.ERC20Bridge);
-        });
-        it('should increase the Dai balance of `toAddress` by `amount` if successful', async () => {
-            const initialBalance = await testDaiContract.balanceOf(toAddress).callAsync();
-            await chaiBridgeContract
-                .bridgeTransferFrom(randomAddress(), fromAddress, toAddress, amount, constants.NULL_BYTES)
-                .awaitTransactionSuccessAsync();
-            const endBalance = await testDaiContract.balanceOf(toAddress).callAsync();
-            expect(endBalance).to.bignumber.eq(initialBalance.plus(amount));
-        });
-        it('fails if the `chai.draw` call fails', async () => {
-            return expect(
-                chaiBridgeContract
-                    .bridgeTransferFrom(randomAddress(), alwaysRevertAddress, toAddress, amount, constants.NULL_BYTES)
-                    .awaitTransactionSuccessAsync(),
-            ).to.revertWith(RevertReason.ChaiBridgeDrawDaiFailed);
-        });
-    });
-});

contracts/asset-proxy/test/dex_forwarder_bridge.ts

@@ -1,354 +0,0 @@
-import { ContractTxFunctionObj } from '@0x/contract-wrappers';
-import {
-    blockchainTests,
-    constants,
-    expect,
-    filterLogsToArguments,
-    getRandomInteger,
-    randomAddress,
-    shortZip,
-} from '@0x/contracts-test-utils';
-import { BigNumber, hexUtils, NULL_ADDRESS } from '@0x/utils';
-import { DecodedLogs } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { DexForwarderBridgeCall, dexForwarderBridgeDataEncoder } from '../src/dex_forwarder_bridge';
-
-import { artifacts } from './artifacts';
-import {
-    TestDexForwarderBridgeBridgeTransferFromCalledEventArgs as BtfCalledEventArgs,
-    TestDexForwarderBridgeContract,
-    TestDexForwarderBridgeEvents as TestEvents,
-} from './wrappers';
-
-const { ZERO_AMOUNT } = constants;
-
-blockchainTests.resets('DexForwarderBridge unit tests', env => {
-    let testContract: TestDexForwarderBridgeContract;
-    let inputToken: string;
-    let outputToken: string;
-    const BRIDGE_SUCCESS = '0xdc1600f3';
-    const BRIDGE_FAILURE = '0xffffffff';
-    const BRIDGE_REVERT_ERROR = 'oopsie';
-    const NOT_AUTHORIZED_REVERT = 'DexForwarderBridge/SENDER_NOT_AUTHORIZED';
-    const DEFAULTS = {
-        toAddress: randomAddress(),
-    };
-
-    before(async () => {
-        testContract = await TestDexForwarderBridgeContract.deployFrom0xArtifactAsync(
-            artifacts.TestDexForwarderBridge,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-        // Create test tokens.
-        [inputToken, outputToken] = [
-            await callAndTransactAsync(testContract.createToken()),
-            await callAndTransactAsync(testContract.createToken()),
-        ];
-        await callAndTransactAsync(testContract.setAuthorized(env.txDefaults.from as string));
-    });
-
-    async function callAndTransactAsync<TResult>(fnCall: ContractTxFunctionObj<TResult>): Promise<TResult> {
-        const result = await fnCall.callAsync();
-        await fnCall.awaitTransactionSuccessAsync({}, { shouldValidate: false });
-        return result;
-    }
-
-    function getRandomBridgeCall(
-        bridgeAddress: string,
-        fields: Partial<DexForwarderBridgeCall> = {},
-    ): DexForwarderBridgeCall {
-        return {
-            target: bridgeAddress,
-            inputTokenAmount: getRandomInteger(1, '100e18'),
-            outputTokenAmount: getRandomInteger(1, '100e18'),
-            bridgeData: hexUtils.leftPad(inputToken),
-            ...fields,
-        };
-    }
-
-    describe('bridgeTransferFrom()', () => {
-        let goodBridgeCalls: DexForwarderBridgeCall[];
-        let revertingBridgeCall: DexForwarderBridgeCall;
-        let failingBridgeCall: DexForwarderBridgeCall;
-        let allBridgeCalls: DexForwarderBridgeCall[];
-        let totalFillableOutputAmount: BigNumber;
-        let totalFillableInputAmount: BigNumber;
-        let recipientOutputBalance: BigNumber;
-
-        beforeEach(async () => {
-            goodBridgeCalls = [];
-            for (let i = 0; i < 4; ++i) {
-                goodBridgeCalls.push(await createBridgeCallAsync({ returnCode: BRIDGE_SUCCESS }));
-            }
-            revertingBridgeCall = await createBridgeCallAsync({ revertError: BRIDGE_REVERT_ERROR });
-            failingBridgeCall = await createBridgeCallAsync({ returnCode: BRIDGE_FAILURE });
-            allBridgeCalls = _.shuffle([failingBridgeCall, revertingBridgeCall, ...goodBridgeCalls]);
-
-            totalFillableInputAmount = BigNumber.sum(...goodBridgeCalls.map(c => c.inputTokenAmount));
-            totalFillableOutputAmount = BigNumber.sum(...goodBridgeCalls.map(c => c.outputTokenAmount));
-
-            // Grant the taker some output tokens.
-            await testContract.setTokenBalance(
-                outputToken,
-                DEFAULTS.toAddress,
-                (recipientOutputBalance = getRandomInteger(1, '100e18')),
-            );
-        });
-
-        async function setForwarderInputBalanceAsync(amount: BigNumber): Promise<void> {
-            await testContract
-                .setTokenBalance(inputToken, testContract.address, amount)
-                .awaitTransactionSuccessAsync({}, { shouldValidate: false });
-        }
-
-        async function createBridgeCallAsync(
-            opts: Partial<{
-                returnCode: string;
-                revertError: string;
-                callFields: Partial<DexForwarderBridgeCall>;
-                outputFillAmount: BigNumber;
-            }>,
-        ): Promise<DexForwarderBridgeCall> {
-            const { returnCode, revertError, callFields, outputFillAmount } = {
-                returnCode: BRIDGE_SUCCESS,
-                revertError: '',
-                ...opts,
-            };
-            const bridge = await callAndTransactAsync(testContract.createBridge(returnCode, revertError));
-            const call = getRandomBridgeCall(bridge, callFields);
-            await testContract
-                .setBridgeTransferAmount(call.target, outputFillAmount || call.outputTokenAmount)
-                .awaitTransactionSuccessAsync({}, { shouldValidate: false });
-            return call;
-        }
-
-        async function callBridgeTransferFromAsync(opts: {
-            bridgeData: string;
-            sellAmount?: BigNumber;
-            buyAmount?: BigNumber;
-        }): Promise<DecodedLogs> {
-            // Fund the forwarder with input tokens to sell.
-            await setForwarderInputBalanceAsync(opts.sellAmount || totalFillableInputAmount);
-            const call = testContract.bridgeTransferFrom(
-                outputToken,
-                testContract.address,
-                DEFAULTS.toAddress,
-                opts.buyAmount || totalFillableOutputAmount,
-                opts.bridgeData,
-            );
-            const returnCode = await call.callAsync();
-            if (returnCode !== BRIDGE_SUCCESS) {
-                throw new Error('Expected BRIDGE_SUCCESS');
-            }
-            const receipt = await call.awaitTransactionSuccessAsync({}, { shouldValidate: false });
-            // tslint:disable-next-line: no-unnecessary-type-assertion
-            return receipt.logs as DecodedLogs;
-        }
-
-        it('succeeds with no bridge calls and no input balance', async () => {
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls: [],
-            });
-            await callBridgeTransferFromAsync({ bridgeData, sellAmount: ZERO_AMOUNT });
-        });
-
-        it('succeeds with bridge calls and no input balance', async () => {
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls: allBridgeCalls,
-            });
-            await callBridgeTransferFromAsync({ bridgeData, sellAmount: ZERO_AMOUNT });
-        });
-
-        it('succeeds with no bridge calls and an input balance', async () => {
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls: [],
-            });
-            await callBridgeTransferFromAsync({
-                bridgeData,
-                sellAmount: new BigNumber(1),
-            });
-        });
-
-        it('succeeds if entire input token balance is not consumed', async () => {
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls: allBridgeCalls,
-            });
-            await callBridgeTransferFromAsync({
-                bridgeData,
-                sellAmount: totalFillableInputAmount.plus(1),
-            });
-        });
-
-        it('fails if not authorized', async () => {
-            const calls = goodBridgeCalls.slice(0, 1);
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            await callAndTransactAsync(testContract.setAuthorized(NULL_ADDRESS));
-            return expect(callBridgeTransferFromAsync({ bridgeData, sellAmount: new BigNumber(1) })).to.revertWith(
-                NOT_AUTHORIZED_REVERT,
-            );
-        });
-
-        it('succeeds with one bridge call', async () => {
-            const calls = goodBridgeCalls.slice(0, 1);
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            await callBridgeTransferFromAsync({ bridgeData, sellAmount: calls[0].inputTokenAmount });
-        });
-
-        it('succeeds with many bridge calls', async () => {
-            const calls = goodBridgeCalls;
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            await callBridgeTransferFromAsync({ bridgeData });
-        });
-
-        it('swallows a failing bridge call', async () => {
-            const calls = _.shuffle([...goodBridgeCalls, failingBridgeCall]);
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            await callBridgeTransferFromAsync({ bridgeData });
-        });
-
-        it('consumes input tokens for output tokens', async () => {
-            const calls = allBridgeCalls;
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            await callBridgeTransferFromAsync({ bridgeData });
-            const currentBridgeInputBalance = await testContract
-                .balanceOf(inputToken, testContract.address)
-                .callAsync();
-            expect(currentBridgeInputBalance).to.bignumber.eq(0);
-            const currentRecipientOutputBalance = await testContract
-                .balanceOf(outputToken, DEFAULTS.toAddress)
-                .callAsync();
-            expect(currentRecipientOutputBalance).to.bignumber.eq(totalFillableOutputAmount);
-        });
-
-        it("transfers only up to each call's input amount to each bridge", async () => {
-            const calls = goodBridgeCalls;
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            const logs = await callBridgeTransferFromAsync({ bridgeData });
-            const btfs = filterLogsToArguments<BtfCalledEventArgs>(logs, TestEvents.BridgeTransferFromCalled);
-            for (const [call, btf] of shortZip(goodBridgeCalls, btfs)) {
-                expect(btf.inputTokenBalance).to.bignumber.eq(call.inputTokenAmount);
-            }
-        });
-
-        it('transfers only up to outstanding sell amount to each bridge', async () => {
-            // Prepend an extra bridge call.
-            const calls = [
-                await createBridgeCallAsync({
-                    callFields: {
-                        inputTokenAmount: new BigNumber(1),
-                        outputTokenAmount: new BigNumber(1),
-                    },
-                }),
-                ...goodBridgeCalls,
-            ];
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            const logs = await callBridgeTransferFromAsync({ bridgeData });
-            const btfs = filterLogsToArguments<BtfCalledEventArgs>(logs, TestEvents.BridgeTransferFromCalled);
-            expect(btfs).to.be.length(goodBridgeCalls.length + 1);
-            // The last call will receive 1 less token.
-            const lastCall = calls.slice(-1)[0];
-            const lastBtf = btfs.slice(-1)[0];
-            expect(lastBtf.inputTokenBalance).to.bignumber.eq(lastCall.inputTokenAmount.minus(1));
-        });
-
-        it('recoups funds from a bridge that fails', async () => {
-            // Prepend a call that will take the whole input amount but will
-            // fail.
-            const badCall = await createBridgeCallAsync({
-                callFields: { inputTokenAmount: totalFillableInputAmount },
-                returnCode: BRIDGE_FAILURE,
-            });
-            const calls = [badCall, ...goodBridgeCalls];
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            const logs = await callBridgeTransferFromAsync({ bridgeData });
-            const btfs = filterLogsToArguments<BtfCalledEventArgs>(logs, TestEvents.BridgeTransferFromCalled);
-            expect(btfs).to.be.length(goodBridgeCalls.length);
-        });
-
-        it('recoups funds from a bridge that reverts', async () => {
-            // Prepend a call that will take the whole input amount but will
-            // revert.
-            const badCall = await createBridgeCallAsync({
-                callFields: { inputTokenAmount: totalFillableInputAmount },
-                revertError: BRIDGE_REVERT_ERROR,
-            });
-            const calls = [badCall, ...goodBridgeCalls];
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            const logs = await callBridgeTransferFromAsync({ bridgeData });
-            const btfs = filterLogsToArguments<BtfCalledEventArgs>(logs, TestEvents.BridgeTransferFromCalled);
-            expect(btfs).to.be.length(goodBridgeCalls.length);
-        });
-
-        it('recoups funds from a bridge that under-pays', async () => {
-            // Prepend a call that will take the whole input amount but will
-            // underpay the output amount..
-            const badCall = await createBridgeCallAsync({
-                callFields: {
-                    inputTokenAmount: totalFillableInputAmount,
-                    outputTokenAmount: new BigNumber(2),
-                },
-                outputFillAmount: new BigNumber(1),
-            });
-            const calls = [badCall, ...goodBridgeCalls];
-            const bridgeData = dexForwarderBridgeDataEncoder.encode({
-                inputToken,
-                calls,
-            });
-            const logs = await callBridgeTransferFromAsync({ bridgeData });
-            const btfs = filterLogsToArguments<BtfCalledEventArgs>(logs, TestEvents.BridgeTransferFromCalled);
-            expect(btfs).to.be.length(goodBridgeCalls.length);
-        });
-    });
-
-    describe('executeBridgeCall()', () => {
-        it('cannot be called externally', async () => {
-            return expect(
-                testContract
-                    .executeBridgeCall(
-                        randomAddress(),
-                        randomAddress(),
-                        randomAddress(),
-                        randomAddress(),
-                        new BigNumber(1),
-                        new BigNumber(1),
-                        constants.NULL_BYTES,
-                    )
-                    .callAsync(),
-            ).to.revertWith('DexForwarderBridge/ONLY_SELF');
-        });
-    });
-});

contracts/asset-proxy/test/dydx_bridge.ts

@@ -1,399 +0,0 @@
-import { LibMathRevertErrors } from '@0x/contracts-exchange-libs';
-import { blockchainTests, constants, expect, verifyEventsFromLogs } from '@0x/contracts-test-utils';
-import { AssetProxyId, RevertReason } from '@0x/types';
-import { BigNumber } from '@0x/utils';
-import * as _ from 'lodash';
-
-import { DydxBridgeActionType, DydxBridgeData, dydxBridgeDataEncoder } from '../src/dydx_bridge_encoder';
-import { ERC20BridgeProxyContract, IAssetDataContract } from '../src/wrappers';
-
-import { artifacts } from './artifacts';
-import { TestDydxBridgeContract, TestDydxBridgeEvents } from './wrappers';
-
-blockchainTests.resets('DydxBridge unit tests', env => {
-    const defaultAccountNumber = new BigNumber(1);
-    const marketId = new BigNumber(2);
-    const defaultAmount = new BigNumber(4);
-    const notAuthorized = '0x0000000000000000000000000000000000000001';
-    const defaultDepositAction = {
-        actionType: DydxBridgeActionType.Deposit,
-        accountIdx: constants.ZERO_AMOUNT,
-        marketId,
-        conversionRateNumerator: constants.ZERO_AMOUNT,
-        conversionRateDenominator: constants.ZERO_AMOUNT,
-    };
-    const defaultWithdrawAction = {
-        actionType: DydxBridgeActionType.Withdraw,
-        accountIdx: constants.ZERO_AMOUNT,
-        marketId,
-        conversionRateNumerator: constants.ZERO_AMOUNT,
-        conversionRateDenominator: constants.ZERO_AMOUNT,
-    };
-    let testContract: TestDydxBridgeContract;
-    let testProxyContract: ERC20BridgeProxyContract;
-    let assetDataEncoder: IAssetDataContract;
-    let owner: string;
-    let authorized: string;
-    let accountOwner: string;
-    let receiver: string;
-
-    before(async () => {
-        // Get accounts
-        const accounts = await env.web3Wrapper.getAvailableAddressesAsync();
-        [owner, authorized, accountOwner, receiver] = accounts;
-
-        // Deploy dydx bridge
-        testContract = await TestDydxBridgeContract.deployFrom0xArtifactAsync(
-            artifacts.TestDydxBridge,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-            [accountOwner, receiver],
-        );
-
-        // Deploy test erc20 bridge proxy
-        testProxyContract = await ERC20BridgeProxyContract.deployFrom0xArtifactAsync(
-            artifacts.ERC20BridgeProxy,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-        await testProxyContract.addAuthorizedAddress(authorized).awaitTransactionSuccessAsync({ from: owner });
-
-        // Setup asset data encoder
-        assetDataEncoder = new IAssetDataContract(constants.NULL_ADDRESS, env.provider);
-    });
-
-    describe('bridgeTransferFrom()', () => {
-        const callBridgeTransferFrom = async (
-            from: string,
-            to: string,
-            amount: BigNumber,
-            bridgeData: DydxBridgeData,
-            sender: string,
-        ): Promise<string> => {
-            const returnValue = await testContract
-                .bridgeTransferFrom(
-                    constants.NULL_ADDRESS,
-                    from,
-                    to,
-                    amount,
-                    dydxBridgeDataEncoder.encode({ bridgeData }),
-                )
-                .callAsync({ from: sender });
-            return returnValue;
-        };
-        const executeBridgeTransferFromAndVerifyEvents = async (
-            from: string,
-            to: string,
-            amount: BigNumber,
-            bridgeData: DydxBridgeData,
-            sender: string,
-        ): Promise<void> => {
-            // Execute transaction.
-            const txReceipt = await testContract
-                .bridgeTransferFrom(
-                    constants.NULL_ADDRESS,
-                    from,
-                    to,
-                    amount,
-                    dydxBridgeDataEncoder.encode({ bridgeData }),
-                )
-                .awaitTransactionSuccessAsync({ from: sender });
-
-            // Verify `OperateAccount` event.
-            const expectedOperateAccountEvents = [];
-            for (const accountNumber of bridgeData.accountNumbers) {
-                expectedOperateAccountEvents.push({
-                    owner: accountOwner,
-                    number: accountNumber,
-                });
-            }
-            verifyEventsFromLogs(txReceipt.logs, expectedOperateAccountEvents, TestDydxBridgeEvents.OperateAccount);
-
-            // Verify `OperateAction` event.
-            const weiDenomination = 0;
-            const deltaAmountRef = 0;
-            const expectedOperateActionEvents = [];
-            for (const action of bridgeData.actions) {
-                expectedOperateActionEvents.push({
-                    actionType: action.actionType as number,
-                    accountIdx: action.accountIdx,
-                    amountSign: action.actionType === DydxBridgeActionType.Deposit ? true : false,
-                    amountDenomination: weiDenomination,
-                    amountRef: deltaAmountRef,
-                    amountValue: action.conversionRateDenominator.gt(0)
-                        ? amount
-                              .times(action.conversionRateNumerator)
-                              .dividedToIntegerBy(action.conversionRateDenominator)
-                        : amount,
-                    primaryMarketId: marketId,
-                    secondaryMarketId: constants.ZERO_AMOUNT,
-                    otherAddress: action.actionType === DydxBridgeActionType.Deposit ? from : to,
-                    otherAccountId: constants.ZERO_AMOUNT,
-                    data: '0x',
-                });
-            }
-            verifyEventsFromLogs(txReceipt.logs, expectedOperateActionEvents, TestDydxBridgeEvents.OperateAction);
-        };
-        it('succeeds when calling with zero amount', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [defaultDepositAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                constants.ZERO_AMOUNT,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling with no accounts', async () => {
-            const bridgeData = {
-                accountNumbers: [],
-                actions: [defaultDepositAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling with no actions', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling `operate` with the `deposit` action and a single account', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [defaultDepositAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling `operate` with the `deposit` action and multiple accounts', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber, defaultAccountNumber.plus(1)],
-                actions: [defaultDepositAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling `operate` with the `withdraw` action and a single account', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [defaultWithdrawAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling `operate` with the `withdraw` action and multiple accounts', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber, defaultAccountNumber.plus(1)],
-                actions: [defaultWithdrawAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling `operate` with the `deposit` action and multiple accounts', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber, defaultAccountNumber.plus(1)],
-                actions: [defaultWithdrawAction, defaultDepositAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when calling `operate` with multiple actions under a single account', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [defaultWithdrawAction, defaultDepositAction],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when scaling the `amount` to deposit', async () => {
-            const conversionRateNumerator = new BigNumber(1);
-            const conversionRateDenominator = new BigNumber(2);
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [
-                    defaultWithdrawAction,
-                    {
-                        ...defaultDepositAction,
-                        conversionRateNumerator,
-                        conversionRateDenominator,
-                    },
-                ],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('succeeds when scaling the `amount` to withdraw', async () => {
-            const conversionRateNumerator = new BigNumber(1);
-            const conversionRateDenominator = new BigNumber(2);
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [
-                    defaultDepositAction,
-                    {
-                        ...defaultWithdrawAction,
-                        conversionRateNumerator,
-                        conversionRateDenominator,
-                    },
-                ],
-            };
-            await executeBridgeTransferFromAndVerifyEvents(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-        });
-        it('reverts if not called by the ERC20 Bridge Proxy', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [defaultDepositAction],
-            };
-            const callBridgeTransferFromPromise = callBridgeTransferFrom(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                notAuthorized,
-            );
-            const expectedError = RevertReason.DydxBridgeOnlyCallableByErc20BridgeProxy;
-            return expect(callBridgeTransferFromPromise).to.revertWith(expectedError);
-        });
-        it('should return magic bytes if call succeeds', async () => {
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [defaultDepositAction],
-            };
-            const returnValue = await callBridgeTransferFrom(
-                accountOwner,
-                receiver,
-                defaultAmount,
-                bridgeData,
-                authorized,
-            );
-            expect(returnValue).to.equal(AssetProxyId.ERC20Bridge);
-        });
-        it('should revert when `Operate` reverts', async () => {
-            // Set revert flag.
-            await testContract.setRevertOnOperate(true).awaitTransactionSuccessAsync();
-
-            // Execute transfer.
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [defaultDepositAction],
-            };
-            const tx = callBridgeTransferFrom(accountOwner, receiver, defaultAmount, bridgeData, authorized);
-            const expectedError = 'TestDydxBridge/SHOULD_REVERT_ON_OPERATE';
-            return expect(tx).to.revertWith(expectedError);
-        });
-        it('should revert when there is a rounding error', async () => {
-            // Setup a rounding error
-            const conversionRateNumerator = new BigNumber(5318);
-            const conversionRateDenominator = new BigNumber(47958);
-            const amount = new BigNumber(9000);
-            const bridgeData = {
-                accountNumbers: [defaultAccountNumber],
-                actions: [
-                    defaultDepositAction,
-                    {
-                        ...defaultWithdrawAction,
-                        conversionRateNumerator,
-                        conversionRateDenominator,
-                    },
-                ],
-            };
-
-            // Execute transfer and assert error.
-            const tx = callBridgeTransferFrom(accountOwner, receiver, amount, bridgeData, authorized);
-            const expectedError = new LibMathRevertErrors.RoundingError(
-                conversionRateNumerator,
-                conversionRateDenominator,
-                amount,
-            );
-            return expect(tx).to.revertWith(expectedError);
-        });
-    });
-
-    describe('ERC20BridgeProxy.transferFrom()', () => {
-        const bridgeData = {
-            accountNumbers: [defaultAccountNumber],
-            actions: [defaultWithdrawAction],
-        };
-        let assetData: string;
-
-        before(async () => {
-            const testTokenAddress = await testContract.getTestToken().callAsync();
-            assetData = assetDataEncoder
-                .ERC20Bridge(testTokenAddress, testContract.address, dydxBridgeDataEncoder.encode({ bridgeData }))
-                .getABIEncodedTransactionData();
-        });
-
-        it('should succeed if `bridgeTransferFrom` succeeds', async () => {
-            await testProxyContract
-                .transferFrom(assetData, accountOwner, receiver, defaultAmount)
-                .awaitTransactionSuccessAsync({ from: authorized });
-        });
-        it('should revert if `bridgeTransferFrom` reverts', async () => {
-            // Set revert flag.
-            await testContract.setRevertOnOperate(true).awaitTransactionSuccessAsync();
-            const tx = testProxyContract
-                .transferFrom(assetData, accountOwner, receiver, defaultAmount)
-                .awaitTransactionSuccessAsync({ from: authorized });
-            const expectedError = 'TestDydxBridge/SHOULD_REVERT_ON_OPERATE';
-            return expect(tx).to.revertWith(expectedError);
-        });
-    });
-});

contracts/asset-proxy/test/erc20bridge_proxy.ts

@@ -1,287 +0,0 @@
-import {
-    blockchainTests,
-    constants,
-    expect,
-    getRandomInteger,
-    Numberish,
-    randomAddress,
-} from '@0x/contracts-test-utils';
-import { AuthorizableRevertErrors } from '@0x/contracts-utils';
-import { AssetProxyId } from '@0x/types';
-import { AbiEncoder, BigNumber, hexUtils, StringRevertError } from '@0x/utils';
-import { DecodedLogs } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-
-import { ERC20BridgeProxyContract, TestERC20BridgeContract } from './wrappers';
-
-blockchainTests.resets('ERC20BridgeProxy unit tests', env => {
-    const PROXY_ID = AssetProxyId.ERC20Bridge;
-    const BRIDGE_SUCCESS_RETURN_DATA = hexUtils.rightPad(PROXY_ID);
-    let owner: string;
-    let badCaller: string;
-    let assetProxy: ERC20BridgeProxyContract;
-    let bridgeContract: TestERC20BridgeContract;
-    let testTokenAddress: string;
-
-    before(async () => {
-        [owner, badCaller] = await env.getAccountAddressesAsync();
-        assetProxy = await ERC20BridgeProxyContract.deployFrom0xArtifactAsync(
-            artifacts.ERC20BridgeProxy,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-        bridgeContract = await TestERC20BridgeContract.deployFrom0xArtifactAsync(
-            artifacts.TestERC20Bridge,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-        testTokenAddress = await bridgeContract.testToken().callAsync();
-        await assetProxy.addAuthorizedAddress(owner).awaitTransactionSuccessAsync();
-    });
-
-    interface AssetDataOpts {
-        tokenAddress: string;
-        bridgeAddress: string;
-        bridgeData: BridgeDataOpts;
-    }
-
-    interface BridgeDataOpts {
-        transferAmount: Numberish;
-        revertError?: string;
-        returnData: string;
-    }
-
-    function createAssetData(opts?: Partial<AssetDataOpts>): AssetDataOpts {
-        return _.merge(
-            {
-                tokenAddress: testTokenAddress,
-                bridgeAddress: bridgeContract.address,
-                bridgeData: createBridgeData(),
-            },
-            opts,
-        );
-    }
-
-    function createBridgeData(opts?: Partial<BridgeDataOpts>): BridgeDataOpts {
-        return _.merge(
-            {
-                transferAmount: constants.ZERO_AMOUNT,
-                returnData: BRIDGE_SUCCESS_RETURN_DATA,
-            },
-            opts,
-        );
-    }
-
-    function encodeAssetData(opts: AssetDataOpts): string {
-        const encoder = AbiEncoder.createMethod('ERC20BridgeProxy', [
-            { name: 'tokenAddress', type: 'address' },
-            { name: 'bridgeAddress', type: 'address' },
-            { name: 'bridgeData', type: 'bytes' },
-        ]);
-        return encoder.encode([opts.tokenAddress, opts.bridgeAddress, encodeBridgeData(opts.bridgeData)]);
-    }
-
-    function encodeBridgeData(opts: BridgeDataOpts): string {
-        const encoder = AbiEncoder.create([
-            { name: 'transferAmount', type: 'int256' },
-            { name: 'revertData', type: 'bytes' },
-            { name: 'returnData', type: 'bytes' },
-        ]);
-        const revertErrorBytes =
-            opts.revertError !== undefined ? new StringRevertError(opts.revertError).encode() : '0x';
-        return encoder.encode([new BigNumber(opts.transferAmount), revertErrorBytes, opts.returnData]);
-    }
-
-    async function setTestTokenBalanceAsync(_owner: string, balance: Numberish): Promise<void> {
-        await bridgeContract.setTestTokenBalance(_owner, new BigNumber(balance)).awaitTransactionSuccessAsync();
-    }
-
-    describe('transferFrom()', () => {
-        interface TransferFromOpts {
-            assetData: AssetDataOpts;
-            from: string;
-            to: string;
-            amount: Numberish;
-        }
-
-        function createTransferFromOpts(opts?: Partial<TransferFromOpts>): TransferFromOpts {
-            const transferAmount = _.get(opts, ['amount'], getRandomInteger(1, 100e18)) as BigNumber;
-            return _.merge(
-                {
-                    assetData: createAssetData({
-                        bridgeData: createBridgeData({
-                            transferAmount,
-                        }),
-                    }),
-                    from: randomAddress(),
-                    to: randomAddress(),
-                    amount: transferAmount,
-                },
-                opts,
-            );
-        }
-
-        async function transferFromAsync(opts?: Partial<TransferFromOpts>, caller?: string): Promise<DecodedLogs> {
-            const _opts = createTransferFromOpts(opts);
-            const { logs } = await assetProxy
-                .transferFrom(encodeAssetData(_opts.assetData), _opts.from, _opts.to, new BigNumber(_opts.amount))
-                .awaitTransactionSuccessAsync({ from: caller });
-            return (logs as any) as DecodedLogs;
-        }
-
-        it('succeeds if the bridge succeeds and balance increases by `amount`', async () => {
-            const tx = transferFromAsync();
-            return expect(tx).to.be.fulfilled('');
-        });
-
-        it('succeeds if balance increases more than `amount`', async () => {
-            const amount = getRandomInteger(1, 100e18);
-            const tx = transferFromAsync({
-                amount,
-                assetData: createAssetData({
-                    bridgeData: createBridgeData({
-                        transferAmount: amount.plus(1),
-                    }),
-                }),
-            });
-            return expect(tx).to.be.fulfilled('');
-        });
-
-        it('passes the correct arguments to the bridge contract', async () => {
-            const opts = createTransferFromOpts();
-            const logs = await transferFromAsync(opts);
-            expect(logs.length).to.eq(1);
-            const args = logs[0].args;
-            expect(args.tokenAddress).to.eq(opts.assetData.tokenAddress);
-            expect(args.from).to.eq(opts.from);
-            expect(args.to).to.eq(opts.to);
-            expect(args.amount).to.bignumber.eq(opts.amount);
-            expect(args.bridgeData).to.eq(encodeBridgeData(opts.assetData.bridgeData));
-        });
-
-        it('fails if not called by an authorized address', async () => {
-            const tx = transferFromAsync({}, badCaller);
-            return expect(tx).to.revertWith(new AuthorizableRevertErrors.SenderNotAuthorizedError(badCaller));
-        });
-
-        it('fails if asset data is truncated', async () => {
-            const opts = createTransferFromOpts();
-            const truncatedAssetData = hexUtils.slice(encodeAssetData(opts.assetData), 0, -1);
-            const tx = assetProxy
-                .transferFrom(truncatedAssetData, opts.from, opts.to, new BigNumber(opts.amount))
-                .awaitTransactionSuccessAsync();
-            return expect(tx).to.be.rejected();
-        });
-
-        it('fails if bridge returns nothing', async () => {
-            const tx = transferFromAsync({
-                assetData: createAssetData({
-                    bridgeData: createBridgeData({
-                        returnData: '0x',
-                    }),
-                }),
-            });
-            // This will actually revert when the AP tries to decode the return
-            // value.
-            return expect(tx).to.be.rejected();
-        });
-
-        it('fails if bridge returns true', async () => {
-            const tx = transferFromAsync({
-                assetData: createAssetData({
-                    bridgeData: createBridgeData({
-                        returnData: hexUtils.leftPad('0x1'),
-                    }),
-                }),
-            });
-            // This will actually revert when the AP tries to decode the return
-            // value.
-            return expect(tx).to.be.rejected();
-        });
-
-        it('fails if bridge returns 0x1', async () => {
-            const tx = transferFromAsync({
-                assetData: createAssetData({
-                    bridgeData: createBridgeData({
-                        returnData: hexUtils.rightPad('0x1'),
-                    }),
-                }),
-            });
-            return expect(tx).to.revertWith('BRIDGE_FAILED');
-        });
-
-        it('fails if bridge is an EOA', async () => {
-            const tx = transferFromAsync({
-                assetData: createAssetData({
-                    bridgeAddress: randomAddress(),
-                }),
-            });
-            // This will actually revert when the AP tries to decode the return
-            // value.
-            return expect(tx).to.be.rejected();
-        });
-
-        it('fails if bridge reverts', async () => {
-            const revertError = 'FOOBAR';
-            const tx = transferFromAsync({
-                assetData: createAssetData({
-                    bridgeData: createBridgeData({
-                        revertError,
-                    }),
-                }),
-            });
-            return expect(tx).to.revertWith(revertError);
-        });
-
-        it('fails if balance of `to` increases by less than `amount`', async () => {
-            const amount = getRandomInteger(1, 100e18);
-            const tx = transferFromAsync({
-                amount,
-                assetData: createAssetData({
-                    bridgeData: createBridgeData({
-                        transferAmount: amount.minus(1),
-                    }),
-                }),
-            });
-            return expect(tx).to.revertWith('BRIDGE_UNDERPAY');
-        });
-
-        it('fails if balance of `to` decreases', async () => {
-            const toAddress = randomAddress();
-            await setTestTokenBalanceAsync(toAddress, 1e18);
-            const tx = transferFromAsync({
-                to: toAddress,
-                assetData: createAssetData({
-                    bridgeData: createBridgeData({
-                        transferAmount: -1,
-                    }),
-                }),
-            });
-            return expect(tx).to.revertWith('BRIDGE_UNDERPAY');
-        });
-    });
-
-    describe('balanceOf()', () => {
-        it('retrieves the balance of the encoded token', async () => {
-            const _owner = randomAddress();
-            const balance = getRandomInteger(1, 100e18);
-            await bridgeContract.setTestTokenBalance(_owner, balance).awaitTransactionSuccessAsync();
-            const assetData = createAssetData({
-                tokenAddress: testTokenAddress,
-            });
-            const actualBalance = await assetProxy.balanceOf(encodeAssetData(assetData), _owner).callAsync();
-            expect(actualBalance).to.bignumber.eq(balance);
-        });
-    });
-
-    describe('getProxyId()', () => {
-        it('returns the correct proxy ID', async () => {
-            const proxyId = await assetProxy.getProxyId().callAsync();
-            expect(proxyId).to.eq(PROXY_ID);
-        });
-    });
-});

contracts/asset-proxy/test/eth2dai_bridge.ts

@@ -1,191 +0,0 @@
-import {
-    blockchainTests,
-    constants,
-    expect,
-    filterLogsToArguments,
-    getRandomInteger,
-    Numberish,
-    randomAddress,
-} from '@0x/contracts-test-utils';
-import { AssetProxyId } from '@0x/types';
-import { BigNumber, hexUtils, RawRevertError } from '@0x/utils';
-import { DecodedLogs } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-
-import {
-    TestEth2DaiBridgeContract,
-    TestEth2DaiBridgeEvents,
-    TestEth2DaiBridgeSellAllAmountEventArgs,
-    TestEth2DaiBridgeTokenApproveEventArgs,
-    TestEth2DaiBridgeTokenTransferEventArgs,
-} from './wrappers';
-
-blockchainTests.resets('Eth2DaiBridge unit tests', env => {
-    let testContract: TestEth2DaiBridgeContract;
-
-    before(async () => {
-        testContract = await TestEth2DaiBridgeContract.deployFrom0xArtifactAsync(
-            artifacts.TestEth2DaiBridge,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-    });
-
-    describe('isValidSignature()', () => {
-        it('returns success bytes', async () => {
-            const LEGACY_WALLET_MAGIC_VALUE = '0xb0671381';
-            const result = await testContract
-                .isValidSignature(hexUtils.random(), hexUtils.random(_.random(0, 32)))
-                .callAsync();
-            expect(result).to.eq(LEGACY_WALLET_MAGIC_VALUE);
-        });
-    });
-
-    describe('bridgeTransferFrom()', () => {
-        interface WithdrawToOpts {
-            toTokenAddress?: string;
-            fromTokenAddress?: string;
-            toAddress: string;
-            amount: Numberish;
-            fromTokenBalance: Numberish;
-            revertReason: string;
-            fillAmount: Numberish;
-            toTokentransferRevertReason: string;
-            toTokenTransferReturnData: string;
-        }
-
-        interface WithdrawToResult {
-            opts: WithdrawToOpts;
-            result: string;
-            logs: DecodedLogs;
-        }
-
-        function createWithdrawToOpts(opts?: Partial<WithdrawToOpts>): WithdrawToOpts {
-            return {
-                toAddress: randomAddress(),
-                amount: getRandomInteger(1, 100e18),
-                revertReason: '',
-                fillAmount: getRandomInteger(1, 100e18),
-                fromTokenBalance: getRandomInteger(1, 100e18),
-                toTokentransferRevertReason: '',
-                toTokenTransferReturnData: hexUtils.leftPad(1),
-                ...opts,
-            };
-        }
-
-        async function withdrawToAsync(opts?: Partial<WithdrawToOpts>): Promise<WithdrawToResult> {
-            const _opts = createWithdrawToOpts(opts);
-            // Set the fill behavior.
-            await testContract
-                .setFillBehavior(_opts.revertReason, new BigNumber(_opts.fillAmount))
-                .awaitTransactionSuccessAsync();
-            // Create tokens and balances.
-            if (_opts.fromTokenAddress === undefined) {
-                const createTokenFn = testContract.createToken(new BigNumber(_opts.fromTokenBalance));
-                _opts.fromTokenAddress = await createTokenFn.callAsync();
-                await createTokenFn.awaitTransactionSuccessAsync();
-            }
-            if (_opts.toTokenAddress === undefined) {
-                const createTokenFn = testContract.createToken(constants.ZERO_AMOUNT);
-                _opts.toTokenAddress = await createTokenFn.callAsync();
-                await createTokenFn.awaitTransactionSuccessAsync();
-            }
-            // Set the transfer behavior of `toTokenAddress`.
-            await testContract
-                .setTransferBehavior(
-                    _opts.toTokenAddress,
-                    _opts.toTokentransferRevertReason,
-                    _opts.toTokenTransferReturnData,
-                )
-                .awaitTransactionSuccessAsync();
-            // Call bridgeTransferFrom().
-            const bridgeTransferFromFn = testContract.bridgeTransferFrom(
-                // "to" token address
-                _opts.toTokenAddress,
-                // Random from address.
-                randomAddress(),
-                // To address.
-                _opts.toAddress,
-                new BigNumber(_opts.amount),
-                // ABI-encode the "from" token address as the bridge data.
-                hexUtils.leftPad(_opts.fromTokenAddress as string),
-            );
-            const result = await bridgeTransferFromFn.callAsync();
-            const { logs } = await bridgeTransferFromFn.awaitTransactionSuccessAsync();
-            return {
-                opts: _opts,
-                result,
-                logs: (logs as any) as DecodedLogs,
-            };
-        }
-
-        it('returns magic bytes on success', async () => {
-            const BRIDGE_SUCCESS_RETURN_DATA = AssetProxyId.ERC20Bridge;
-            const { result } = await withdrawToAsync();
-            expect(result).to.eq(BRIDGE_SUCCESS_RETURN_DATA);
-        });
-
-        it('calls `Eth2Dai.sellAllAmount()`', async () => {
-            const { opts, logs } = await withdrawToAsync();
-            const transfers = filterLogsToArguments<TestEth2DaiBridgeSellAllAmountEventArgs>(
-                logs,
-                TestEth2DaiBridgeEvents.SellAllAmount,
-            );
-            expect(transfers.length).to.eq(1);
-            expect(transfers[0].sellToken).to.eq(opts.fromTokenAddress);
-            expect(transfers[0].buyToken).to.eq(opts.toTokenAddress);
-            expect(transfers[0].sellTokenAmount).to.bignumber.eq(opts.fromTokenBalance);
-            expect(transfers[0].minimumFillAmount).to.bignumber.eq(opts.amount);
-        });
-
-        it('sets an unlimited allowance on the `fromTokenAddress` token', async () => {
-            const { opts, logs } = await withdrawToAsync();
-            const approvals = filterLogsToArguments<TestEth2DaiBridgeTokenApproveEventArgs>(
-                logs,
-                TestEth2DaiBridgeEvents.TokenApprove,
-            );
-            expect(approvals.length).to.eq(1);
-            expect(approvals[0].token).to.eq(opts.fromTokenAddress);
-            expect(approvals[0].spender).to.eq(testContract.address);
-            expect(approvals[0].allowance).to.bignumber.eq(constants.MAX_UINT256);
-        });
-
-        it('transfers filled amount to `to`', async () => {
-            const { opts, logs } = await withdrawToAsync();
-            const transfers = filterLogsToArguments<TestEth2DaiBridgeTokenTransferEventArgs>(
-                logs,
-                TestEth2DaiBridgeEvents.TokenTransfer,
-            );
-            expect(transfers.length).to.eq(1);
-            expect(transfers[0].token).to.eq(opts.toTokenAddress);
-            expect(transfers[0].from).to.eq(testContract.address);
-            expect(transfers[0].to).to.eq(opts.toAddress);
-            expect(transfers[0].amount).to.bignumber.eq(opts.fillAmount);
-        });
-
-        it('fails if `Eth2Dai.sellAllAmount()` reverts', async () => {
-            const opts = createWithdrawToOpts({ revertReason: 'FOOBAR' });
-            const tx = withdrawToAsync(opts);
-            return expect(tx).to.revertWith(opts.revertReason);
-        });
-
-        it('fails if `toTokenAddress.transfer()` reverts', async () => {
-            const opts = createWithdrawToOpts({ toTokentransferRevertReason: 'FOOBAR' });
-            const tx = withdrawToAsync(opts);
-            return expect(tx).to.revertWith(opts.toTokentransferRevertReason);
-        });
-
-        it('fails if `toTokenAddress.transfer()` returns false', async () => {
-            const opts = createWithdrawToOpts({ toTokenTransferReturnData: hexUtils.leftPad(0) });
-            const tx = withdrawToAsync(opts);
-            return expect(tx).to.revertWith(new RawRevertError(hexUtils.leftPad(0)));
-        });
-
-        it('succeeds if `toTokenAddress.transfer()` returns true', async () => {
-            await withdrawToAsync({ toTokenTransferReturnData: hexUtils.leftPad(1) });
-        });
-    });
-});

contracts/asset-proxy/test/global_hooks.ts

@@ -1,19 +0,0 @@
-import { env, EnvVars } from '@0x/dev-utils';
-
-import { coverage, profiler, provider } from '@0x/contracts-test-utils';
-import { providerUtils } from '@0x/utils';
-
-before('start web3 provider', () => {
-    providerUtils.startProviderEngine(provider);
-});
-after('generate coverage report', async () => {
-    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
-        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
-        await coverageSubprovider.writeCoverageAsync();
-    }
-    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
-        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
-        await profilerSubprovider.writeProfilerOutputAsync();
-    }
-    provider.stop();
-});

contracts/asset-proxy/test/kyber_bridge.ts

@@ -1,284 +0,0 @@
-import {
-    blockchainTests,
-    constants,
-    expect,
-    getRandomInteger,
-    getRandomPortion,
-    randomAddress,
-    verifyEventsFromLogs,
-} from '@0x/contracts-test-utils';
-import { AssetProxyId } from '@0x/types';
-import { BigNumber, hexUtils } from '@0x/utils';
-import { DecodedLogs } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-
-import { TestKyberBridgeContract, TestKyberBridgeEvents } from './wrappers';
-
-// TODO(dorothy-zbornak): Tests need to be updated.
-blockchainTests.resets.skip('KyberBridge unit tests', env => {
-    const KYBER_ETH_ADDRESS = '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee';
-    const FROM_TOKEN_DECIMALS = 6;
-    const TO_TOKEN_DECIMALS = 18;
-    const FROM_TOKEN_BASE = new BigNumber(10).pow(FROM_TOKEN_DECIMALS);
-    const TO_TOKEN_BASE = new BigNumber(10).pow(TO_TOKEN_DECIMALS);
-    const WETH_BASE = new BigNumber(10).pow(18);
-    const KYBER_RATE_BASE = WETH_BASE;
-    let testContract: TestKyberBridgeContract;
-
-    before(async () => {
-        testContract = await TestKyberBridgeContract.deployFrom0xArtifactAsync(
-            artifacts.TestKyberBridge,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-    });
-
-    describe('isValidSignature()', () => {
-        it('returns success bytes', async () => {
-            const LEGACY_WALLET_MAGIC_VALUE = '0xb0671381';
-            const result = await testContract
-                .isValidSignature(hexUtils.random(), hexUtils.random(_.random(0, 32)))
-                .callAsync();
-            expect(result).to.eq(LEGACY_WALLET_MAGIC_VALUE);
-        });
-    });
-
-    describe('bridgeTransferFrom()', () => {
-        let fromTokenAddress: string;
-        let toTokenAddress: string;
-        let wethAddress: string;
-
-        before(async () => {
-            wethAddress = await testContract.weth().callAsync();
-            fromTokenAddress = await testContract.createToken(FROM_TOKEN_DECIMALS).callAsync();
-            await testContract.createToken(FROM_TOKEN_DECIMALS).awaitTransactionSuccessAsync();
-            toTokenAddress = await testContract.createToken(TO_TOKEN_DECIMALS).callAsync();
-            await testContract.createToken(TO_TOKEN_DECIMALS).awaitTransactionSuccessAsync();
-        });
-
-        const STATIC_KYBER_TRADE_ARGS = {
-            maxBuyTokenAmount: constants.MAX_UINT256,
-            walletId: constants.NULL_ADDRESS,
-        };
-
-        interface TransferFromOpts {
-            toTokenAddress: string;
-            fromTokenAddress: string;
-            toAddress: string;
-            // Amount to pass into `bridgeTransferFrom()`
-            amount: BigNumber;
-            // Amount to convert in `trade()`.
-            fillAmount: BigNumber;
-            // Token balance of the bridge.
-            fromTokenBalance: BigNumber;
-        }
-
-        interface TransferFromResult {
-            opts: TransferFromOpts;
-            result: string;
-            logs: DecodedLogs;
-        }
-
-        function createTransferFromOpts(opts?: Partial<TransferFromOpts>): TransferFromOpts {
-            const amount = getRandomInteger(1, TO_TOKEN_BASE.times(100));
-            return {
-                fromTokenAddress,
-                toTokenAddress,
-                amount,
-                toAddress: randomAddress(),
-                fillAmount: getRandomPortion(amount),
-                fromTokenBalance: getRandomInteger(1, FROM_TOKEN_BASE.times(100)),
-                ...opts,
-            };
-        }
-
-        async function withdrawToAsync(opts?: Partial<TransferFromOpts>): Promise<TransferFromResult> {
-            const _opts = createTransferFromOpts(opts);
-            // Fund the contract with input tokens.
-            await testContract
-                .grantTokensTo(_opts.fromTokenAddress, testContract.address, _opts.fromTokenBalance)
-                .awaitTransactionSuccessAsync({ value: _opts.fromTokenBalance });
-            // Fund the contract with output tokens.
-            await testContract.setNextFillAmount(_opts.fillAmount).awaitTransactionSuccessAsync({
-                value: _opts.toTokenAddress === wethAddress ? _opts.fillAmount : constants.ZERO_AMOUNT,
-            });
-            // Call bridgeTransferFrom().
-            const bridgeTransferFromFn = testContract.bridgeTransferFrom(
-                // Output token
-                _opts.toTokenAddress,
-                // Random maker address.
-                randomAddress(),
-                // Recipient address.
-                _opts.toAddress,
-                // Transfer amount.
-                _opts.amount,
-                // ABI-encode the input token address as the bridge data.
-                hexUtils.concat(hexUtils.leftPad(_opts.fromTokenAddress), hexUtils.leftPad(32), hexUtils.leftPad(0)),
-            );
-            const result = await bridgeTransferFromFn.callAsync();
-            const { logs } = await bridgeTransferFromFn.awaitTransactionSuccessAsync();
-            return {
-                opts: _opts,
-                result,
-                logs: (logs as any) as DecodedLogs,
-            };
-        }
-
-        function getMinimumConversionRate(opts: TransferFromOpts): BigNumber {
-            const fromBase = opts.fromTokenAddress === wethAddress ? WETH_BASE : FROM_TOKEN_BASE;
-            const toBase = opts.toTokenAddress === wethAddress ? WETH_BASE : TO_TOKEN_BASE;
-            return opts.amount
-                .div(toBase)
-                .div(opts.fromTokenBalance.div(fromBase))
-                .times(KYBER_RATE_BASE)
-                .integerValue(BigNumber.ROUND_DOWN);
-        }
-
-        it('returns magic bytes on success', async () => {
-            const BRIDGE_SUCCESS_RETURN_DATA = AssetProxyId.ERC20Bridge;
-            const { result } = await withdrawToAsync();
-            expect(result).to.eq(BRIDGE_SUCCESS_RETURN_DATA);
-        });
-
-        it('can trade token -> token', async () => {
-            const { opts, logs } = await withdrawToAsync();
-            verifyEventsFromLogs(
-                logs,
-                [
-                    {
-                        sellTokenAddress: opts.fromTokenAddress,
-                        buyTokenAddress: opts.toTokenAddress,
-                        sellAmount: opts.fromTokenBalance,
-                        recipientAddress: opts.toAddress,
-                        minConversionRate: getMinimumConversionRate(opts),
-                        msgValue: constants.ZERO_AMOUNT,
-                        ...STATIC_KYBER_TRADE_ARGS,
-                    },
-                ],
-                TestKyberBridgeEvents.KyberBridgeTrade,
-            );
-        });
-
-        it('can trade token -> ETH', async () => {
-            const { opts, logs } = await withdrawToAsync({
-                toTokenAddress: wethAddress,
-            });
-            verifyEventsFromLogs(
-                logs,
-                [
-                    {
-                        sellTokenAddress: opts.fromTokenAddress,
-                        buyTokenAddress: KYBER_ETH_ADDRESS,
-                        sellAmount: opts.fromTokenBalance,
-                        recipientAddress: testContract.address,
-                        minConversionRate: getMinimumConversionRate(opts),
-                        msgValue: constants.ZERO_AMOUNT,
-                        ...STATIC_KYBER_TRADE_ARGS,
-                    },
-                ],
-                TestKyberBridgeEvents.KyberBridgeTrade,
-            );
-        });
-
-        it('can trade ETH -> token', async () => {
-            const { opts, logs } = await withdrawToAsync({
-                fromTokenAddress: wethAddress,
-            });
-            verifyEventsFromLogs(
-                logs,
-                [
-                    {
-                        sellTokenAddress: KYBER_ETH_ADDRESS,
-                        buyTokenAddress: opts.toTokenAddress,
-                        sellAmount: opts.fromTokenBalance,
-                        recipientAddress: opts.toAddress,
-                        minConversionRate: getMinimumConversionRate(opts),
-                        msgValue: opts.fromTokenBalance,
-                        ...STATIC_KYBER_TRADE_ARGS,
-                    },
-                ],
-                TestKyberBridgeEvents.KyberBridgeTrade,
-            );
-        });
-
-        it('does nothing if bridge has no token balance', async () => {
-            const { logs } = await withdrawToAsync({
-                fromTokenBalance: constants.ZERO_AMOUNT,
-            });
-            expect(logs).to.be.length(0);
-        });
-
-        it('only transfers the token if trading the same token', async () => {
-            const { opts, logs } = await withdrawToAsync({
-                toTokenAddress: fromTokenAddress,
-            });
-            verifyEventsFromLogs(
-                logs,
-                [
-                    {
-                        tokenAddress: fromTokenAddress,
-                        ownerAddress: testContract.address,
-                        recipientAddress: opts.toAddress,
-                        amount: opts.fromTokenBalance,
-                    },
-                ],
-                TestKyberBridgeEvents.KyberBridgeTokenTransfer,
-            );
-        });
-
-        it('grants Kyber an allowance when selling non-WETH', async () => {
-            const { opts, logs } = await withdrawToAsync();
-            verifyEventsFromLogs(
-                logs,
-                [
-                    {
-                        tokenAddress: opts.fromTokenAddress,
-                        ownerAddress: testContract.address,
-                        spenderAddress: testContract.address,
-                        allowance: constants.MAX_UINT256,
-                    },
-                ],
-                TestKyberBridgeEvents.KyberBridgeTokenApprove,
-            );
-        });
-
-        it('does not grant Kyber an allowance when selling WETH', async () => {
-            const { logs } = await withdrawToAsync({
-                fromTokenAddress: wethAddress,
-            });
-            verifyEventsFromLogs(logs, [], TestKyberBridgeEvents.KyberBridgeTokenApprove);
-        });
-
-        it('withdraws WETH and passes it to Kyber when selling WETH', async () => {
-            const { opts, logs } = await withdrawToAsync({
-                fromTokenAddress: wethAddress,
-            });
-            expect(logs[0].event).to.eq(TestKyberBridgeEvents.KyberBridgeWethWithdraw);
-            expect(logs[0].args).to.deep.eq({
-                ownerAddress: testContract.address,
-                amount: opts.fromTokenBalance,
-            });
-            expect(logs[1].event).to.eq(TestKyberBridgeEvents.KyberBridgeTrade);
-            expect(logs[1].args.msgValue).to.bignumber.eq(opts.fromTokenBalance);
-        });
-
-        it('wraps WETH and transfers it to the recipient when buyng WETH', async () => {
-            const { opts, logs } = await withdrawToAsync({
-                toTokenAddress: wethAddress,
-            });
-            expect(logs[0].event).to.eq(TestKyberBridgeEvents.KyberBridgeTokenApprove);
-            expect(logs[0].args.tokenAddress).to.eq(opts.fromTokenAddress);
-            expect(logs[1].event).to.eq(TestKyberBridgeEvents.KyberBridgeTrade);
-            expect(logs[1].args.recipientAddress).to.eq(testContract.address);
-            expect(logs[2].event).to.eq(TestKyberBridgeEvents.KyberBridgeWethDeposit);
-            expect(logs[2].args).to.deep.eq({
-                msgValue: opts.fillAmount,
-                ownerAddress: testContract.address,
-                amount: opts.fillAmount,
-            });
-        });
-    });
-});

contracts/asset-proxy/test/static_call_proxy.ts

@@ -1,245 +0,0 @@
-import {
-    chaiSetup,
-    constants,
-    expectTransactionFailedWithoutReasonAsync,
-    provider,
-    txDefaults,
-    web3Wrapper,
-} from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { AssetProxyId, RevertReason } from '@0x/types';
-import { AbiEncoder, BigNumber } from '@0x/utils';
-import * as chai from 'chai';
-import * as ethUtil from 'ethereumjs-util';
-
-import { artifacts } from './artifacts';
-
-import {
-    IAssetDataContract,
-    IAssetProxyContract,
-    StaticCallProxyContract,
-    TestStaticCallTargetContract,
-} from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('StaticCallProxy', () => {
-    const amount = constants.ZERO_AMOUNT;
-    let fromAddress: string;
-    let toAddress: string;
-
-    let assetDataInterface: IAssetDataContract;
-    let staticCallProxy: IAssetProxyContract;
-    let staticCallTarget: TestStaticCallTargetContract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    before(async () => {
-        const accounts = await web3Wrapper.getAvailableAddressesAsync();
-        [fromAddress, toAddress] = accounts.slice(0, 2);
-        const staticCallProxyWithoutTransferFrom = await StaticCallProxyContract.deployFrom0xArtifactAsync(
-            artifacts.StaticCallProxy,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-        assetDataInterface = new IAssetDataContract(constants.NULL_ADDRESS, provider);
-        staticCallProxy = new IAssetProxyContract(
-            staticCallProxyWithoutTransferFrom.address,
-            provider,
-            txDefaults,
-            {},
-            StaticCallProxyContract.deployedBytecode,
-        );
-        staticCallTarget = await TestStaticCallTargetContract.deployFrom0xArtifactAsync(
-            artifacts.TestStaticCallTarget,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-    });
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('general', () => {
-        it('should revert if undefined function is called', async () => {
-            const undefinedSelector = '0x01020304';
-            await expectTransactionFailedWithoutReasonAsync(
-                web3Wrapper.sendTransactionAsync({
-                    from: fromAddress,
-                    to: staticCallProxy.address,
-                    value: constants.ZERO_AMOUNT,
-                    data: undefinedSelector,
-                }),
-            );
-        });
-        it('should have an id of 0xc339d10a', async () => {
-            const proxyId = await staticCallProxy.getProxyId().callAsync();
-            const expectedProxyId = AssetProxyId.StaticCall;
-            expect(proxyId).to.equal(expectedProxyId);
-        });
-    });
-    describe('transferFrom', () => {
-        it('should revert if assetData lies outside the bounds of calldata', async () => {
-            const staticCallData = staticCallTarget.noInputFunction().getABIEncodedTransactionData();
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            const txData = staticCallProxy
-                .transferFrom(assetData, fromAddress, toAddress, amount)
-                .getABIEncodedTransactionData();
-            const offsetToAssetData = '0000000000000000000000000000000000000000000000000000000000000080';
-            const txDataEndBuffer = ethUtil.toBuffer((txData.length - 2) / 2 - 4);
-            const paddedTxDataEndBuffer = ethUtil.setLengthLeft(txDataEndBuffer, 32);
-            const invalidOffsetToAssetData = ethUtil.bufferToHex(paddedTxDataEndBuffer).slice(2);
-            const newAssetData = '0000000000000000000000000000000000000000000000000000000000000304';
-            const badTxData = `${txData.replace(offsetToAssetData, invalidOffsetToAssetData)}${newAssetData}`;
-            await expectTransactionFailedWithoutReasonAsync(
-                web3Wrapper.sendTransactionAsync({
-                    to: staticCallProxy.address,
-                    from: fromAddress,
-                    data: badTxData,
-                }),
-            );
-        });
-        it('should revert if the length of assetData is less than 100 bytes', async () => {
-            const staticCallData = constants.NULL_BYTES;
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData()
-                .slice(0, -128);
-            const assetDataByteLen = (assetData.length - 2) / 2;
-            expect((assetDataByteLen - 4) % 32).to.equal(0);
-            await expectTransactionFailedWithoutReasonAsync(
-                staticCallProxy.transferFrom(assetData, fromAddress, toAddress, amount).sendTransactionAsync(),
-            );
-        });
-        it('should revert if the offset to `staticCallData` points to outside of assetData', async () => {
-            const staticCallData = staticCallTarget.noInputFunction().getABIEncodedTransactionData();
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            const offsetToStaticCallData = '0000000000000000000000000000000000000000000000000000000000000060';
-            const assetDataEndBuffer = ethUtil.toBuffer((assetData.length - 2) / 2 - 4);
-            const paddedAssetDataEndBuffer = ethUtil.setLengthLeft(assetDataEndBuffer, 32);
-            const invalidOffsetToStaticCallData = ethUtil.bufferToHex(paddedAssetDataEndBuffer).slice(2);
-            const newStaticCallData = '0000000000000000000000000000000000000000000000000000000000000304';
-            const badAssetData = `${assetData.replace(
-                offsetToStaticCallData,
-                invalidOffsetToStaticCallData,
-            )}${newStaticCallData}`;
-            await expectTransactionFailedWithoutReasonAsync(
-                staticCallProxy.transferFrom(badAssetData, fromAddress, toAddress, amount).sendTransactionAsync(),
-            );
-        });
-        it('should revert if the callTarget attempts to write to state', async () => {
-            const staticCallData = staticCallTarget.updateState().getABIEncodedTransactionData();
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            await expectTransactionFailedWithoutReasonAsync(
-                staticCallProxy.transferFrom(assetData, fromAddress, toAddress, amount).sendTransactionAsync(),
-            );
-        });
-        it('should revert with data provided by the callTarget if the staticcall reverts', async () => {
-            const staticCallData = staticCallTarget.assertEvenNumber(new BigNumber(1)).getABIEncodedTransactionData();
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            return expect(
-                staticCallProxy.transferFrom(assetData, fromAddress, toAddress, amount).awaitTransactionSuccessAsync(),
-            ).to.revertWith(RevertReason.TargetNotEven);
-        });
-        it('should revert if the hash of the output is different than expected expected', async () => {
-            const staticCallData = staticCallTarget.isOddNumber(new BigNumber(0)).getABIEncodedTransactionData();
-            const trueAsBuffer = ethUtil.toBuffer('0x0000000000000000000000000000000000000000000000000000000000000001');
-            const expectedResultHash = ethUtil.bufferToHex(ethUtil.sha3(trueAsBuffer));
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            return expect(
-                staticCallProxy.transferFrom(assetData, fromAddress, toAddress, amount).awaitTransactionSuccessAsync(),
-            ).to.revertWith(RevertReason.UnexpectedStaticCallResult);
-        });
-        it('should be successful if a function call with no inputs and no outputs is successful', async () => {
-            const staticCallData = staticCallTarget.noInputFunction().getABIEncodedTransactionData();
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            await staticCallProxy
-                .transferFrom(assetData, fromAddress, toAddress, amount)
-                .awaitTransactionSuccessAsync();
-        });
-        it('should be successful if the staticCallTarget is not a contract and no return value is expected', async () => {
-            const staticCallData = '0x0102030405060708';
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(toAddress, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            await staticCallProxy
-                .transferFrom(assetData, fromAddress, toAddress, amount)
-                .awaitTransactionSuccessAsync();
-        });
-        it('should be successful if a function call with one static input returns the correct value', async () => {
-            const staticCallData = staticCallTarget.isOddNumber(new BigNumber(1)).getABIEncodedTransactionData();
-            const trueAsBuffer = ethUtil.toBuffer('0x0000000000000000000000000000000000000000000000000000000000000001');
-            const expectedResultHash = ethUtil.bufferToHex(ethUtil.sha3(trueAsBuffer));
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            await staticCallProxy
-                .transferFrom(assetData, fromAddress, toAddress, amount)
-                .awaitTransactionSuccessAsync();
-        });
-        it('should be successful if a function with one dynamic input is successful', async () => {
-            const dynamicInput = '0x0102030405060708';
-            const staticCallData = staticCallTarget.dynamicInputFunction(dynamicInput).getABIEncodedTransactionData();
-            const expectedResultHash = constants.KECCAK256_NULL;
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            await staticCallProxy
-                .transferFrom(assetData, fromAddress, toAddress, amount)
-                .awaitTransactionSuccessAsync();
-        });
-        it('should be successful if a function call returns a complex type', async () => {
-            const a = new BigNumber(1);
-            const b = new BigNumber(2);
-            const staticCallData = staticCallTarget.returnComplexType(a, b).getABIEncodedTransactionData();
-            const abiEncoder = new AbiEncoder.DynamicBytes({
-                name: '',
-                type: 'bytes',
-            });
-            const aHex = '0000000000000000000000000000000000000000000000000000000000000001';
-            const bHex = '0000000000000000000000000000000000000000000000000000000000000002';
-            const expectedResults = `${staticCallTarget.address}${aHex}${bHex}`;
-            const offset = '0000000000000000000000000000000000000000000000000000000000000020';
-            const encodedExpectedResultWithOffset = `0x${offset}${abiEncoder.encode(expectedResults).slice(2)}`;
-            const expectedResultHash = ethUtil.bufferToHex(
-                ethUtil.sha3(ethUtil.toBuffer(encodedExpectedResultWithOffset)),
-            );
-            const assetData = assetDataInterface
-                .StaticCall(staticCallTarget.address, staticCallData, expectedResultHash)
-                .getABIEncodedTransactionData();
-            await staticCallProxy
-                .transferFrom(assetData, fromAddress, toAddress, amount)
-                .awaitTransactionSuccessAsync();
-        });
-    });
-});