| component |
|
|
| component.rs |
|
4272 |
| core |
|
|
| core.rs |
|
4239 |
| lib.rs |
A WebAssembly encoder.
The main builder is the [`Module`]. You can build a section with a
section-specific builder, like [`TypeSection`] or [`ImportSection`], and
then add it to the module with [`Module::section`]. When you are finished
building the module, call either [`Module::as_slice`] or [`Module::finish`]
to get the encoded bytes. The former gives a shared reference to the
underlying bytes as a slice, while the latter gives you ownership of them as
a vector.
# Example
If we wanted to build this module:
```wasm
(module
(type (func (param i32 i32) (result i32)))
(func (type 0)
local.get 0
local.get 1
i32.add)
(export "f" (func 0)))
```
then we would do this:
```
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.ty().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());
``` |
5528 |
| raw.rs |
|
656 |
| reencode |
|
|
| reencode.rs |
Conversions from `wasmparser` to `wasm-encoder` to [`Reencode`] parsed wasm.
The [`RoundtripReencoder`] allows encoding identical wasm to the parsed
input. |
72241 |