Struct walrus::passes::Used

pub struct Used {
    pub tables: HashSet<Id<Table>, BuildIdHasher>,
    pub types: HashSet<Id<Type>, BuildIdHasher>,
    pub funcs: HashSet<Id<Function>, BuildIdHasher>,
    pub globals: HashSet<Id<Global>, BuildIdHasher>,
    pub memories: HashSet<Id<Memory>, BuildIdHasher>,
    pub elements: HashSet<Id<Element>, BuildIdHasher>,
    pub data: HashSet<Id<Data>, BuildIdHasher>,
    pub locals: HashMap<Id<Function>, HashSet<Id<Local>, BuildIdHasher>, BuildIdHasher>,
}

Finds the things within a module that are used.

This is useful for implementing something like a linker's --gc-sections so that our emitted .wasm binaries are small and don't contain things that are not used.

Fields

tables: HashSet<Id<Table>, BuildIdHasher>

The module's used tables.

types: HashSet<Id<Type>, BuildIdHasher>

The module's used types.

funcs: HashSet<Id<Function>, BuildIdHasher>

The module's used functions.

globals: HashSet<Id<Global>, BuildIdHasher>

The module's used globals.

memories: HashSet<Id<Memory>, BuildIdHasher>

The module's used memories.

elements: HashSet<Id<Element>, BuildIdHasher>

The module's used passive element segments.

data: HashSet<Id<Data>, BuildIdHasher>

The module's used passive data segments.

locals: HashMap<Id<Function>, HashSet<Id<Local>, BuildIdHasher>, BuildIdHasher>

Locals used within functions

Methods

impl Used

pub fn new<R>(module: &Module, roots: R) -> Used where
    R: IntoIterator<Item = ExportId>, 

Construct a new Used set for the given module.

Trait Implementations

impl Default for Used

fn default() -> Used

Returns the "default value" for a type.

impl Debug for Used

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.