wasm-tools 源码相关（wasm-parse/wat/wasm/wasmtime）

[cisen]

总结

• https://github.com/cisen/sourcecode-wasm-tools-00
• https://github.com/bytecodealliance/wasm-tools
• wasmtime：https://github.com/cisen/blog/issues/962

问答

parse的结果在哪里？

• crates\wasmparser\src\parser.rs，结果是一个包含很多个payload的Iterator，并不是树形结构，所以parse的速度想当快

  pub enum Payload<'a> {
  Version {
      num: u32,
      range: Range,
  },
  TypeSection(crate::TypeSectionReader<'a>),
  ImportSection(crate::ImportSectionReader<'a>),
  AliasSection(crate::AliasSectionReader<'a>),
  InstanceSection(crate::InstanceSectionReader<'a>),
  ModuleSection(crate::ModuleSectionReader<'a>),
  FunctionSection(crate::FunctionSectionReader<'a>),
  TableSection(crate::TableSectionReader<'a>),
  MemorySection(crate::MemorySectionReader<'a>),
  EventSection(crate::EventSectionReader<'a>),
  GlobalSection(crate::GlobalSectionReader<'a>),
  ExportSection(crate::ExportSectionReader<'a>),
  StartSection {
      func: u32,
      range: Range,
  },
  ElementSection(crate::ElementSectionReader<'a>),
  DataCountSection {
      count: u32,
      range: Range,
  },
  DataSection(crate::DataSectionReader<'a>),
  CustomSection {
      name: &'a str,
      data_offset: usize,
      data: &'a [u8],
  },
  CodeSectionStart {
      count: u32,
      range: Range,
      size: u32,
  },
  CodeSectionEntry(crate::FunctionBody<'a>),
  ModuleCodeSectionStart {
      count: u32,
      range: Range,
      size: u32,
  },
  ModuleCodeSectionEntry {
      parser: Parser,
      range: Range,
  },
  UnknownSection {
      id: u8,
      contents: &'a [u8],
      range: Range,
  },
  
  End,
  }