Struct Function 

pub struct Function {
    pub name: Option<String>,
    pub arguments: Vec<FunctionArgument>,
    pub result: Option<FunctionResult>,
    pub local_variables: Arena<LocalVariable>,
    pub expressions: Arena<Expression>,
    pub named_expressions: IndexMap<Handle<Expression>, String, BuildHasherDefault<FxHasher>>,
    pub body: Block,
    pub diagnostic_filter_leaf: Option<Handle<DiagnosticFilterNode>>,
}

Available on crate feature unstable-wgpu-27 only.

A function defined in the module.

Fields

name: Option<String>

Name of the function, if any.

arguments: Vec<FunctionArgument>

Information about function argument.

result: Option<FunctionResult>

The result of this function, if any.

local_variables: Arena<LocalVariable>

Local variables defined and used in the function.

expressions: Arena<Expression>

Expressions used inside this function.

Unless explicitly stated otherwise, if an Expression is in this arena, then its subexpressions are in this arena too. In other words, every Handle<Expression> in this arena refers to an Expression in this arena too.

The main ways this arena refers to Module::global_expressions are:

• Constant, Override, and GlobalVariable expressions hold handles for their respective types, whose initializer expressions are in Module::global_expressions.

• Various expressions hold Type handles, and Types may refer to global expressions, for things like array lengths.

An Expression must occur before all other Expressions that use its value.

named_expressions: IndexMap<Handle<Expression>, String, BuildHasherDefault<FxHasher>>

Map of expressions that have associated variable names

body: Block

Block of instructions comprising the body of the function.

diagnostic_filter_leaf: Option<Handle<DiagnosticFilterNode>>

The leaf of all diagnostic filter rules tree (stored in Module::diagnostic_filters) parsed on this function.

In WGSL, this corresponds to @diagnostic(…) attributes.

See DiagnosticFilterNode for details on how the tree is represented and used in validation.

Implementations

impl Function

pub fn originating_global( &self, pointer: Handle<Expression>, ) -> Option<Handle<GlobalVariable>>

Return the global variable being accessed by the expression pointer.

Assuming that pointer is a series of Access and AccessIndex expressions that ultimately access some part of a GlobalVariable, return a handle for that global.

If the expression does not ultimately access a global variable, return None.

Trait Implementations

impl Clone for Function

fn clone(&self) -> Function

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Function

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Function

fn default() -> Function

Returns the “default value” for a type.