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//! Provides primitive fixed size hash types.
// Constructed via `fixed_hash` crate macro.
pub use uint::U256;
construct_fixed_hash!{
/// A 160 bits (20 bytes) hash type.
///
/// # Note
///
/// Can be interchanged with `Address`
pub struct H160(20);
}
construct_fixed_hash!{
/// A 256-bits (32 bytes) hash type.
pub struct H256(32);
}
// Auto-impl `From` conversions between `H256` and `H160`.
impl_fixed_hash_conversions!(H256, H160);
/// Represents an address in ethereum context.
///
/// # Note
///
/// Addresses have 160 bytes length.
pub type Address = H160;
impl From<U256> for H256 {
fn from(uint: U256) -> H256 {
let mut hash = H256::zero();
uint.to_big_endian(hash.as_bytes_mut());
hash
}
}
impl<'a> From<&'a U256> for H256 {
fn from(uint: &'a U256) -> H256 {
let mut hash: H256 = H256::zero();
uint.to_big_endian(hash.as_bytes_mut());
hash
}
}
impl From<H256> for U256 {
fn from(hash: H256) -> U256 {
U256::from(hash.as_bytes())
}
}
impl<'a> From<&'a H256> for U256 {
fn from(hash: &'a H256) -> U256 {
U256::from(hash.as_bytes())
}
}