Ethereum core types

The crate defines the rust mapping of enthereum core types.

| abi | rust | Status | | --------------------------- | ---------------------------------------- | ---------: | | uint<M>/int<M> | crate::IntM | support| | bytes<M> | crate::BytesM | support| | bytes | crate::Bytes | support| | address | crate::Bytes | support| | bool | bool | support| | <type>[M] | [T;N]/&[T;N] | support| | <type>[] | Vec<T>/&[T] | support| | fixed<M>x<N> | | working on| | (T1,T2,...,Tn) | (T1,T2,...,Tn)/struct A(T1,T2,...,Tn)/struct A { t1:T1,t2:T2,...,t3:Tn } | support|

With serde

This crate using serde framework to handle contract abi serialize/deserilize. Therefore, it is easy to define the structure that supports the Ethereum ABI.

```rust

use etherstypesrs::*;

[derive(Debug,Serialize,Deserilize)]

struct Transfer { to: Address, amount: U256, } ```

EIP712 support

Again, thanks to the good framework design of serde. this crate define a series of serializers to support eip712 protocol.

```rust let domain = json!({ "name": "Ether Mail", "version": "1", "chainId": 1, "verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC" });

let domain: EIP712Domain = serdejson::fromvalue(domain).unwrap(); asserteq!( eip712hashstruct(&domain).unwrap().toeth_hex(), "0xf2cee375fa42b42143804025fc449deafd50cc031ca257e0b194a650a912090f" );

[derive(Debug, Serialize, Deserialize, PartialEq)]

struct Person { pub name: String, pub wallet: Address, }

[derive(Debug, Serialize, Deserialize, PartialEq)]

struct Mail { pub from: Person, pub to: Person, pub contents: String, }

let json = json!({ "from": { "name": "Cow", "wallet": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826" }, "to": { "name": "Bob", "wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB" }, "contents": "Hello, Bob!" });

let mail: Mail = serdejson::fromvalue(json).expect("parse domain");

asserteq!( "Mail(Person from,Person to,string contents)Person(string name,address wallet)", eip712encode_type(&mail).expect("generate e712 types") );

asserteq!( eip712hashstruct(&mail.from).unwrap().toeth_hex(), "0xfc71e5fa27ff56c350aa531bc129ebdf613b772b6604664f5d8dbe21b85eb0c8" );

asserteq!( eip712hashstruct(&mail.to).unwrap().toeth_hex(), "0xcd54f074a4af31b4411ff6a60c9719dbd559c221c8ac3492d9d872b041d703d1" );

asserteq!( eip712hashstruct(&mail).unwrap().toeth_hex(), "0xc52c0ee5d84264471806290a3f2c4cecfc5490626bf912d01f240d7a274b371e" );

asserteq!( eip712encode(&domain, &mail).unwrap().toethhex(), "0x1901f2cee375fa42b42143804025fc449deafd50cc031ca257e0b194a650a912090fc52c0ee5d84264471806290a3f2c4cecfc5490626bf912d01f240d7a274b371e" );

let expectrequest: TypedData = serdejson::fromstr(includestr!("./eip712.json")).unwrap();

asserteq!(eip712intorequest(domain, mail).unwrap(), expectrequest); ```