`wasm-encoder`

A Bytecode Alliance project

A WebAssembly encoder for Rust.

## Usage Add `wasm-encoder` to your `Cargo.toml` ```sh $ cargo add wasm-encoder ``` And then you can encode WebAssembly binaries via: ```rust use wasm_encoder::{ CodeSection, ExportKind, ExportSection, Function, FunctionSection, Instruction, Module, TypeSection, ValType, }; let mut module = Module::new(); // Encode the type section. let mut types = TypeSection::new(); let params = vec![ValType::I32, ValType::I32]; let results = vec![ValType::I32]; types.function(params, results); module.section(&types); // Encode the function section. let mut functions = FunctionSection::new(); let type_index = 0; functions.function(type_index); module.section(&functions); // Encode the export section. let mut exports = ExportSection::new(); exports.export("f", ExportKind::Func, 0); module.section(&exports); // Encode the code section. let mut codes = CodeSection::new(); let locals = vec![]; let mut f = Function::new(locals); f.instruction(&Instruction::LocalGet(0)); f.instruction(&Instruction::LocalGet(1)); f.instruction(&Instruction::I32Add); f.instruction(&Instruction::End); codes.function(&f); module.section(&codes); // Extract the encoded Wasm bytes for this module. let wasm_bytes = module.finish(); // We generated a valid Wasm module! assert!(wasmparser::validate(&wasm_bytes).is_ok()); ``` # License This project is licensed under the Apache 2.0 license with the LLVM exception. See [LICENSE](LICENSE) for more details. ### Contribution Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this project by you, as defined in the Apache-2.0 license, shall be licensed as above, without any additional terms or conditions.