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no_std support for ff crate

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This commit is contained in:
Jack Grigg
2019-05-15 20:43:24 +01:00
parent 1c9f5742fa
commit ec2c304efd
5 changed files with 61 additions and 52 deletions
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74
ff/ff_derive/src/lib.rs
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@@ -113,9 +113,9 @@ fn prime_field_repr_impl(repr: &syn::Ident, limbs: usize) -> proc_macro2::TokenS
#[derive(Copy, Clone, PartialEq, Eq, Default)]
pub struct #repr(pub [u64; #limbs]);
impl ::std::fmt::Debug for #repr
impl ::core::fmt::Debug for #repr
{
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
write!(f, "0x")?;
for i in self.0.iter().rev() {
write!(f, "{:016x}", *i)?;
@@ -125,8 +125,8 @@ fn prime_field_repr_impl(repr: &syn::Ident, limbs: usize) -> proc_macro2::TokenS
}
}
impl ::std::fmt::Display for #repr {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
impl ::core::fmt::Display for #repr {
fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
write!(f, "0x")?;
for i in self.0.iter().rev() {
write!(f, "{:016x}", *i)?;
@@ -153,7 +153,7 @@ fn prime_field_repr_impl(repr: &syn::Ident, limbs: usize) -> proc_macro2::TokenS
impl From<u64> for #repr {
#[inline(always)]
fn from(val: u64) -> #repr {
use std::default::Default;
use core::default::Default;
let mut repr = Self::default();
repr.0[0] = val;
@@ -163,22 +163,22 @@ fn prime_field_repr_impl(repr: &syn::Ident, limbs: usize) -> proc_macro2::TokenS
impl Ord for #repr {
#[inline(always)]
fn cmp(&self, other: &#repr) -> ::std::cmp::Ordering {
fn cmp(&self, other: &#repr) -> ::core::cmp::Ordering {
for (a, b) in self.0.iter().rev().zip(other.0.iter().rev()) {
if a < b {
return ::std::cmp::Ordering::Less
return ::core::cmp::Ordering::Less
} else if a > b {
return ::std::cmp::Ordering::Greater
return ::core::cmp::Ordering::Greater
}
}
::std::cmp::Ordering::Equal
::core::cmp::Ordering::Equal
}
}
impl PartialOrd for #repr {
#[inline(always)]
fn partial_cmp(&self, other: &#repr) -> Option<::std::cmp::Ordering> {
fn partial_cmp(&self, other: &#repr) -> Option<::core::cmp::Ordering> {
Some(self.cmp(other))
}
}
@@ -209,7 +209,7 @@ fn prime_field_repr_impl(repr: &syn::Ident, limbs: usize) -> proc_macro2::TokenS
while n >= 64 {
let mut t = 0;
for i in self.0.iter_mut().rev() {
::std::mem::swap(&mut t, i);
::core::mem::swap(&mut t, i);
}
n -= 64;
}
@@ -257,7 +257,7 @@ fn prime_field_repr_impl(repr: &syn::Ident, limbs: usize) -> proc_macro2::TokenS
while n >= 64 {
let mut t = 0;
for i in &mut self.0 {
::std::mem::swap(&mut t, i);
::core::mem::swap(&mut t, i);
}
n -= 64;
}
@@ -767,15 +767,15 @@ fn prime_field_impl(
let top_limb_index = limbs - 1;
quote! {
impl ::std::marker::Copy for #name { }
impl ::core::marker::Copy for #name { }
impl ::std::clone::Clone for #name {
impl ::core::clone::Clone for #name {
fn clone(&self) -> #name {
*self
}
}
impl ::std::default::Default for #name {
impl ::core::default::Default for #name {
fn default() -> #name {
#name::zero()
}
@@ -787,17 +787,17 @@ fn prime_field_impl(
}
}
impl ::std::cmp::PartialEq for #name {
impl ::core::cmp::PartialEq for #name {
fn eq(&self, other: &#name) -> bool {
self.0 == other.0
}
}
impl ::std::cmp::Eq for #name { }
impl ::core::cmp::Eq for #name { }
impl ::std::fmt::Debug for #name
impl ::core::fmt::Debug for #name
{
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
write!(f, "{}({:?})", stringify!(#name), self.into_repr())
}
}
@@ -805,20 +805,20 @@ fn prime_field_impl(
/// Elements are ordered lexicographically.
impl Ord for #name {
#[inline(always)]
fn cmp(&self, other: &#name) -> ::std::cmp::Ordering {
fn cmp(&self, other: &#name) -> ::core::cmp::Ordering {
self.into_repr().cmp(&other.into_repr())
}
}
impl PartialOrd for #name {
#[inline(always)]
fn partial_cmp(&self, other: &#name) -> Option<::std::cmp::Ordering> {
fn partial_cmp(&self, other: &#name) -> Option<::core::cmp::Ordering> {
Some(self.cmp(other))
}
}
impl ::std::fmt::Display for #name {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
impl ::core::fmt::Display for #name {
fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
write!(f, "{}({})", stringify!(#name), self.into_repr())
}
}
@@ -839,7 +839,7 @@ fn prime_field_impl(
}
}
impl ::std::ops::Neg for #name {
impl ::core::ops::Neg for #name {
type Output = #name;
#[inline]
@@ -854,7 +854,7 @@ fn prime_field_impl(
}
}
impl<'r> ::std::ops::Add<&'r #name> for #name {
impl<'r> ::core::ops::Add<&'r #name> for #name {
type Output = #name;
#[inline]
@@ -865,7 +865,7 @@ fn prime_field_impl(
}
}
impl ::std::ops::Add for #name {
impl ::core::ops::Add for #name {
type Output = #name;
#[inline]
@@ -874,7 +874,7 @@ fn prime_field_impl(
}
}
impl<'r> ::std::ops::AddAssign<&'r #name> for #name {
impl<'r> ::core::ops::AddAssign<&'r #name> for #name {
#[inline]
fn add_assign(&mut self, other: &#name) {
// This cannot exceed the backing capacity.
@@ -885,14 +885,14 @@ fn prime_field_impl(
}
}
impl ::std::ops::AddAssign for #name {
impl ::core::ops::AddAssign for #name {
#[inline]
fn add_assign(&mut self, other: #name) {
self.add_assign(&other);
}
}
impl<'r> ::std::ops::Sub<&'r #name> for #name {
impl<'r> ::core::ops::Sub<&'r #name> for #name {
type Output = #name;
#[inline]
@@ -903,7 +903,7 @@ fn prime_field_impl(
}
}
impl ::std::ops::Sub for #name {
impl ::core::ops::Sub for #name {
type Output = #name;
#[inline]
@@ -912,7 +912,7 @@ fn prime_field_impl(
}
}
impl<'r> ::std::ops::SubAssign<&'r #name> for #name {
impl<'r> ::core::ops::SubAssign<&'r #name> for #name {
#[inline]
fn sub_assign(&mut self, other: &#name) {
// If `other` is larger than `self`, we'll need to add the modulus to self first.
@@ -924,14 +924,14 @@ fn prime_field_impl(
}
}
impl ::std::ops::SubAssign for #name {
impl ::core::ops::SubAssign for #name {
#[inline]
fn sub_assign(&mut self, other: #name) {
self.sub_assign(&other);
}
}
impl<'r> ::std::ops::Mul<&'r #name> for #name {
impl<'r> ::core::ops::Mul<&'r #name> for #name {
type Output = #name;
#[inline]
@@ -942,7 +942,7 @@ fn prime_field_impl(
}
}
impl ::std::ops::Mul for #name {
impl ::core::ops::Mul for #name {
type Output = #name;
#[inline]
@@ -951,7 +951,7 @@ fn prime_field_impl(
}
}
impl<'r> ::std::ops::MulAssign<&'r #name> for #name {
impl<'r> ::core::ops::MulAssign<&'r #name> for #name {
#[inline]
fn mul_assign(&mut self, other: &#name)
{
@@ -959,7 +959,7 @@ fn prime_field_impl(
}
}
impl ::std::ops::MulAssign for #name {
impl ::core::ops::MulAssign for #name {
#[inline]
fn mul_assign(&mut self, other: #name)
{
@@ -977,7 +977,7 @@ fn prime_field_impl(
Ok(r)
} else {
Err(PrimeFieldDecodingError::NotInField(format!("{}", r.0)))
Err(PrimeFieldDecodingError::NotInField)
}
}