568e9be07e
* Gas Tokens in Bridges * Added freesGasTokensFromCollector. To handle the case where GST2 is being traded and the balanceOf checks become confusing * Update CHANGELOGs
41 lines
1.3 KiB
Solidity
41 lines
1.3 KiB
Solidity
/*
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Copyright 2019 ZeroEx Intl.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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pragma solidity ^0.5.15;
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import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
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contract IGasToken is IERC20Token {
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/// @dev Frees up to `value` sub-tokens
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/// @param value The amount of tokens to free
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/// @return How many tokens were freed
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function freeUpTo(uint256 value) external returns (uint256 freed);
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/// @dev Frees up to `value` sub-tokens owned by `from`
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/// @param from The owner of tokens to spend
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/// @param value The amount of tokens to free
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/// @return How many tokens were freed
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function freeFromUpTo(address from, uint256 value) external returns (uint256 freed);
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/// @dev Mints `value` amount of tokens
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/// @param value The amount of tokens to mint
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function mint(uint256 value) external;
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}
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