Web Assembly Text Format

Textual representation of the wasm binary format.

https://developer.mozilla.org/en-US/docs/WebAssembly/Understanding_the_text_format

Demos

Here are some excellent demos written with Web Assembly Text format: https://github.com/binji/raw-wasm

Writing raw WAT files

Each web assembly module (in wat) is represented as an s-expression (which is basically a tree).

most basic module

(module)

Types

  • i32 32-bit integer
  • i64 64-bit integer
  • f32 32-bit float
  • f64 64-bit float

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