monolab825/patine

Patine

Write EVM contract using Rust.

Features and TODO

• Generate EVM bytecode from Rust code.

• Contract compostion.

• Call contract in contract.

• Follow the soldity ABI and call convention.

• Generate ABI.

• Generate client SDK.

• Core library.

  • FFI
  • Warpped Function
  • UInt
  • BytesN
  • SInt
  • Address
  • Add AsRef and AsMut
  • Add From
  • Add TryFrom
  • Add "UnsafeFrom" and UnsafeInto
  • Memory

• Std

  • Selector
  • ABI
  • Contract
  • Context
    • Msg
    • Transaction
    • Block

• Macros

  • Contract
  • uint!
  • Event
  • AbiEncode, AbiDecode
  • Function Call

Perquisites

Install cargo-evm by cargo binstall.

cargo binstall cargo-evm

Create Contract Project

Create project using the following command:

cargo evm new "<your-project-name>"

Write Contract

Please add your contract file under src. We use simple store contract as example.

use patine::{storage::{Value, Storage}, U256};

#[contract]
pub struct Contract {
    value: Value<U256, Storage>,
}

#[contract]
impl Contract {
    #[expose]
    pub fn store(&mut self, value: U256) {
        self.value.set(value)
    }

    #[expose]
    pub fn load() -> U256 {
        self.value.get()
    }
}