feat: add ABI generation and improve pvm_contract macro #4
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- Add pvm-contract-macros crate with proc macros for contract development - Add pvm_contract runtime crate with re-exports and helpers - Add ABI generation to cargo-pvm-contract-builder - Parses Rust contracts to extract method signatures - Supports both sol file and Rust type inference - Outputs .abi.json alongside .polkavm binary - Sol file is now optional in #[pvm_contract::contract] - Method signatures can be inferred from Rust types - Add rename attribute for custom Solidity function names - Comprehensive rustdoc documentation
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Summary
pvm-contract-macroscrate with proc macros for contract developmentpvm_contractruntime library crate.abi.jsonalongside.polkavm)New Crates
pvm-contract-macrosProc macros for defining PolkaVM contracts:
#[pvm_contract::contract]- Define a contract module#[pvm_contract::method]- Mark functions as contract methods (automatic selector generation)#[pvm_contract::constructor]- Mark constructor function#[pvm_contract::fallback]- Mark fallback functionpvm_contractRuntime library re-exporting the macros and types.
Key Features
Simplified Method Attributes
Before:
#[pvm_contract::method("transfer(address,uint256)")]After:
#[pvm_contract::method](signature inferred from Rust types)Optional rename:
#[pvm_contract::method(rename = "getBalance")]Automatic Type Mapping (Rust → Solidity)
AddressaddressU256uint256u128uint128u64uint64u32uint32boolbool[u8; 32]bytes32ABI Generation
The builder now parses contract source files and generates ABI JSON files alongside the compiled
.polkavmbinaries.Testing