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Move conversion inside macro

This commit is contained in:
David Palm 2018-08-13 16:51:32 +02:00
parent b4b5c6f626
commit 9261b8519e
2 changed files with 20 additions and 9 deletions
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17
uint/src/uint.rs
View File

@ -806,6 +806,13 @@ macro_rules! construct_uint {
}
}
impl From<$name> for [u8; $n_words * 8] {
fn from(number: $name) -> Self {
let mut arr = [0u8; $n_words * 8];
number.to_big_endian(&mut arr);
arr
}
}
impl Default for $name {
fn default() -> Self {
$name::zero()
@ -1369,12 +1376,4 @@ macro_rules! impl_quickcheck_arbitrary_for_uint {
}
construct_uint!(U256, 4);
construct_uint!(U512, 8);
impl From<U256> for [u8; 32] {
fn from(number: U256) -> Self {
let mut arr = [0u8; 32];
number.to_big_endian(&mut arr);
arr
}
}
construct_uint!(U512, 8);

12
uint/tests/uint_tests.rs
View File

@ -1000,6 +1000,18 @@ fn from_big_endian() {
assert_eq!(U256::from(1), number);
}
#[test]
fn from_fixed_array() {
let expected: [u8; 32] = [
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1,
];
let ary : [u8; 32] = U256::from(1).into();
assert_eq!(ary, expected);
}
#[test]
fn leading_zeros() {
assert_eq!(U256::from("000000000000000000000001adbdd6bd6ff027485484b97f8a6a4c7129756dd1").leading_zeros(), 95);