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std::abi #856
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std::abi #856
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,223 @@ | ||
use ingot::evm | ||
use ingot::context::CalldataReader | ||
use ingot::traits::Max | ||
use ingot::buf::{MemoryBuffer, MemoryBufferReader, MemoryBufferWriter} | ||
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pub trait AbiDecode { | ||
fn decode(mut reader: CalldataReader) -> Self; | ||
} | ||
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pub trait AbiEncode { | ||
fn encode(self, mut writer: MemoryBufferWriter); | ||
} | ||
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// unsigned integers | ||
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impl AbiDecode for u256 { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
return reader.read_u256() | ||
} | ||
} | ||
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impl AbiEncode for u256 { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
return writer.write(value: self) | ||
} | ||
} | ||
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impl AbiDecode for u128 { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
let value: u256 = reader.read_u256() | ||
if value > u128::max() { | ||
revert | ||
} else { | ||
return u128(value) | ||
} | ||
} | ||
} | ||
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impl AbiEncode for u128 { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
return writer.write(value: u256(self)) | ||
} | ||
} | ||
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impl AbiDecode for u64 { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
let value: u256 = reader.read_u256() | ||
if value > u64::max() { | ||
revert | ||
} else { | ||
return u64(value) | ||
} | ||
} | ||
} | ||
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impl AbiEncode for u64 { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
return writer.write(value: u256(self)) | ||
} | ||
} | ||
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impl AbiDecode for u32 { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
let value: u256 = reader.read_u256() | ||
if value > u32::max() { | ||
revert | ||
} else { | ||
return u32(value) | ||
} | ||
} | ||
} | ||
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impl AbiEncode for u32 { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
return writer.write(value: u256(self)) | ||
} | ||
} | ||
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impl AbiDecode for u16 { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
let value: u256 = reader.read_u256() | ||
if value > u16::max() { | ||
revert | ||
} else { | ||
return u16(value) | ||
} | ||
} | ||
} | ||
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impl AbiEncode for u16 { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
return writer.write(value: u256(self)) | ||
} | ||
} | ||
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impl AbiDecode for u8 { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
let value: u256 = reader.read_u256() | ||
if value > u8::max() { | ||
revert | ||
} else { | ||
return u8(value) | ||
} | ||
} | ||
} | ||
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impl AbiEncode for u8 { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
return writer.write(value: u256(self)) | ||
} | ||
} | ||
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// signed integers | ||
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// todo | ||
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// misc types | ||
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impl AbiDecode for bool { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
let value: u256 = reader.read_u256() | ||
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if value == 0 { | ||
return false | ||
} else if value == 1 { | ||
return true | ||
} else { | ||
revert | ||
} | ||
} | ||
} | ||
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impl AbiEncode for bool { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
if self { | ||
writer.write(value: 1) | ||
} else { | ||
writer.write(value: 0) | ||
} | ||
} | ||
} | ||
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impl AbiDecode for address { | ||
fn decode(mut reader: CalldataReader) -> Self { | ||
let value: u256 = reader.read_u256() | ||
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if value > 2 ^ 160 { | ||
revert | ||
} else { | ||
return address(value) | ||
} | ||
} | ||
} | ||
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impl AbiEncode for address { | ||
fn encode(self, mut writer: MemoryBufferWriter) { | ||
writer.write(value: u256(self)) | ||
} | ||
} | ||
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// // generic impl of array encoding | ||
// impl AbiEncode for Array<T, N> | ||
// where | ||
// T: AbiEncode | ||
// { | ||
// fn encode(self, mut writer: MemoryBufferWriter) { | ||
// let i: usize = 0 | ||
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// while i < N { | ||
// self[i].encode(buf) | ||
// i += 1 | ||
// } | ||
// } | ||
// } | ||
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// // generic impl of array decoding | ||
// impl AbiDecode for Array<T, N> | ||
// where | ||
// T: AbiDecode | ||
// { | ||
// fn decode(mut reader: CalldataReader) -> Self { | ||
// let decoded_array: Self | ||
// let i: usize = 0 | ||
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// while i < N { | ||
// decoded_array[i] = T::decode(buf) | ||
// i += 1 | ||
// } | ||
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// return decoded_array | ||
// } | ||
// } | ||
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// // tuple encode derivation | ||
// impl AbiEncode for (T1, T2, ...) | ||
// where | ||
// T1: AbiEncode | ||
// T2: AbiEncode | ||
// ... | ||
// { | ||
// fn encode(self, mut writer: MemoryBufferWriter) { | ||
// self.item0.encode(writer) | ||
// self.item1.encode(writer) | ||
// ... | ||
// } | ||
// } | ||
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// // tuple decode derivation | ||
// impl AbiDecode for (T1, T2, ...) | ||
// where | ||
// T1: AbiDecode | ||
// T1: AbiDecode | ||
// ... | ||
// { | ||
// fn decode(mut reader: CalldataReader) -> Self { | ||
// return ( | ||
// u256::decode(reader), | ||
// u256::decode(reader) | ||
// ... | ||
// ) | ||
// } | ||
// } |
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delete this