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Lib.rs

› WAST › Features

Cargo Features

[dependencies]
wast = { version = "250.0.0", default-features = false, features = ["wasm-module", "dwarf", "component-model"] }
default = component-model, wasm-module

These default features are set whenever wast is added without default-features = false somewhere in the dependency tree.

wasm-module default component-model

Includes default parsing support for *.wat and *.wast files (wasm modules). This isn't always needed though if you're parsing just an s-expression based format. If you'd like to slim down this dependency to just the lexer, parser framework, and token support, this feature can be disabled.

This feature is turned on by default.

dwarf

Off-by-default feature to support emitting DWARF debugging information in parsed binaries pointing back to source locations in the original *.wat source.

Enables gimli ^0.32.0

component-model default = wasm-module

On-by-default this builds in support for parsing the text format of components.

Enables component-model of wasm-encoder

Affects wast::component…