Struct FnDecl 

pub struct FnDecl {
    pub is_pub: bool,
    pub name: Ident,
    pub type_params: Vec<Ident>,
    pub params: Vec<Param>,
    pub return_ty: TypeExpr,
    pub is_fallible: bool,
    pub body: Block,
    pub span: Span,
}

A function declaration: fn name(params) -> ReturnType { ... } or fn map<T, U>(list: List<T>, f: Fn(T) -> U) -> List<U> { ... }

Fields

is_pub: bool

Whether this function is public (can be imported by other modules).

name: Ident

The function’s name.

type_params: Vec<Ident>

Type parameters for generic functions (e.g., <T, U> in map<T, U>).

params: Vec<Param>

The function’s parameters.

return_ty: TypeExpr

The return type.

is_fallible: bool

Whether this function can fail (marked with fails).

body: Block

The function body.

span: Span

Span covering the entire declaration.

Trait Implementations

impl Clone for FnDecl

fn clone(&self) -> FnDecl

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FnDecl

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

Formats the value using the given formatter.

impl PartialEq for FnDecl

fn eq(&self, other: &FnDecl) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for FnDecl