parity-wasm/README.md

# parity-wasm

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[Documentation](https://nikvolf.github.io/parity-wasm/parity_wasm/)

## Rust WebAssembly format serializing/deserializing

along with experimental interpreter

```rust

extern crate parity_wasm;

let module = parity_wasm::deserialize_file("./res/cases/v1/hello.wasm");
assert_eq!(module.code_section().is_some());

let code_section = module.code_section().unwrap(); // Part of the module with functions code

println!("Function count in wasm file: {}", code_section.bodies().len());
```

## Wabt Test suite

Interpreter and decoder supports full wabt testsuite (https://github.com/WebAssembly/testsuite), To run testsuite:

- make sure you have all prerequisites to build `wabt` (since parity-wasm builds it internally using `cmake`, see https://github.com/WebAssembly/wabt)
- checkout with submodules (`git submodule update --init --recursive`)
- run `cargo test --release --manifest-path=spec/Cargo.toml`

Decoder can be fuzzed with `cargo-fuzz` using `wasm-opt` (https://github.com/WebAssembly/binaryen):

- make sure you have all prerequisites to build `binaryen` and `cargo-fuzz` (`cmake` and a C++11 toolchain)
- checkout with submodules (`git submodule update --init --recursive`)
- install `cargo fuzz` subcommand with `cargo install cargo-fuzz`
- set rustup to use a nightly toolchain, because `cargo fuzz` uses a rust compiler plugin: `rustup override set nightly`
- run `cargo fuzz run deserialize`

# License

`parity-wasm` is primarily distributed under the terms of both the MIT
license and the Apache License (Version 2.0), at your choice.

See LICENSE-APACHE, and LICENSE-MIT for details.