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use crate::{U64, U128, U256, U512}; #[cfg(feature = "serialize")] use serde::{Serialize, Serializer, Deserialize, Deserializer}; #[cfg(feature = "serialize")] use ethereum_types_serialize; macro_rules! impl_serde { ($name: ident, $len: expr) => { #[cfg(feature = "serialize")] impl Serialize for $name { fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer { let mut slice = [0u8; 2 + 2 * $len]; ethereum_types_serialize::serialize(&mut slice, &self.0, serializer) } } #[cfg(feature = "serialize")] impl<'de> Deserialize<'de> for $name { fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer<'de> { let mut bytes = [0u8; $len]; ethereum_types_serialize::deserialize_check_len(deserializer, ethereum_types_serialize::ExpectedLen::Exact(&mut bytes))?; Ok($name(bytes)) } } } } macro_rules! impl_uint_conversions { ($hash: ident, $uint: ident) => { impl From<$uint> for $hash { fn from(value: $uint) -> Self { let mut ret = $hash::zero(); value.to_big_endian(ret.as_bytes_mut()); ret } } impl<'a> From<&'a $uint> for $hash { fn from(value: &'a $uint) -> Self { let mut ret = $hash::zero(); value.to_big_endian(ret.as_bytes_mut()); ret } } impl From<$hash> for $uint { fn from(value: $hash) -> Self { Self::from(&value) } } impl<'a> From<&'a $hash> for $uint { fn from(value: &'a $hash) -> Self { Self::from(value.as_ref() as &[u8]) } } } } impl_serde!(H32, 4); impl_serde!(H64, 8); impl_serde!(H128, 16); impl_serde!(H160, 20); impl_serde!(H256, 32); impl_serde!(H264, 33); impl_serde!(H512, 64); impl_serde!(H520, 65); construct_fixed_hash!{ pub struct H32(4); } construct_fixed_hash!{ pub struct H64(8); } construct_fixed_hash!{ pub struct H128(16); } construct_fixed_hash!{ pub struct H160(20); } construct_fixed_hash!{ pub struct H256(32); } construct_fixed_hash!{ pub struct H264(33); } construct_fixed_hash!{ pub struct H512(64); } construct_fixed_hash!{ pub struct H520(65); } impl_uint_conversions!(H64, U64); impl_uint_conversions!(H128, U128); impl_uint_conversions!(H256, U256); impl_uint_conversions!(H512, U512); impl From<H160> for H256 { fn from(value: H160) -> H256 { let mut ret = H256::zero(); ret.0[12..32].copy_from_slice(value.as_bytes()); ret } } impl<'a> From<&'a H160> for H256 { fn from(value: &'a H160) -> H256 { let mut ret = H256::zero(); ret.0[12..32].copy_from_slice(value.as_bytes()); ret } } impl From<u64> for H160 { fn from(val: u64) -> Self { H160::from_low_u64_be(val) } } impl From<u64> for H256 { fn from(val: u64) -> Self { H256::from_low_u64_be(val) } } #[cfg(test)] mod tests { use super::{H160, H256}; use serde_json as ser; #[test] fn test_serialize_h160() { let tests = vec![ (H160::from(0), "0x0000000000000000000000000000000000000000"), (H160::from(2), "0x0000000000000000000000000000000000000002"), (H160::from(15), "0x000000000000000000000000000000000000000f"), (H160::from(16), "0x0000000000000000000000000000000000000010"), (H160::from(1_000), "0x00000000000000000000000000000000000003e8"), (H160::from(100_000), "0x00000000000000000000000000000000000186a0"), (H160::from(u64::max_value()), "0x000000000000000000000000ffffffffffffffff"), ]; for (number, expected) in tests { assert_eq!(format!("{:?}", expected), ser::to_string_pretty(&number).unwrap()); assert_eq!(number, ser::from_str(&format!("{:?}", expected)).unwrap()); } } #[test] fn test_serialize_h256() { let tests = vec![ (H256::from(0), "0x0000000000000000000000000000000000000000000000000000000000000000"), (H256::from(2), "0x0000000000000000000000000000000000000000000000000000000000000002"), (H256::from(15), "0x000000000000000000000000000000000000000000000000000000000000000f"), (H256::from(16), "0x0000000000000000000000000000000000000000000000000000000000000010"), (H256::from(1_000), "0x00000000000000000000000000000000000000000000000000000000000003e8"), (H256::from(100_000), "0x00000000000000000000000000000000000000000000000000000000000186a0"), (H256::from(u64::max_value()), "0x000000000000000000000000000000000000000000000000ffffffffffffffff"), ]; for (number, expected) in tests { assert_eq!(format!("{:?}", expected), ser::to_string_pretty(&number).unwrap()); assert_eq!(number, ser::from_str(&format!("{:?}", expected)).unwrap()); } } #[test] fn test_serialize_invalid() { assert!(ser::from_str::<H256>("\"0x000000000000000000000000000000000000000000000000000000000000000\"").unwrap_err().is_data()); assert!(ser::from_str::<H256>("\"0x000000000000000000000000000000000000000000000000000000000000000g\"").unwrap_err().is_data()); assert!(ser::from_str::<H256>("\"0x00000000000000000000000000000000000000000000000000000000000000000\"").unwrap_err().is_data()); assert!(ser::from_str::<H256>("\"\"").unwrap_err().is_data()); assert!(ser::from_str::<H256>("\"0\"").unwrap_err().is_data()); assert!(ser::from_str::<H256>("\"10\"").unwrap_err().is_data()); } }