Struct Function

pub struct Function {

    pub attributes: Vec<Attribute>,
    pub vis_marker: Option<VisMarker>,
    pub qualifiers: FnQualifiers,
    pub tk_fn_keyword: Ident,
    pub name: Ident,
    pub generic_params: Option<GenericParamList>,
    pub tk_params_parens: GroupSpan,
    pub params: Punctuated<FnParam>,
    pub where_clause: Option<WhereClause>,
    pub tk_return_arrow: Option<[Punct; 2]>,
    pub return_ty: Option<TypeExpr>,
    pub tk_semicolon: Option<Punct>,
    pub body: Option<Group>,
}

Declaration of a function.

See also https://doc.rust-lang.org/reference/items/functions.html.

Example input:

const fn hello(a: i32, b: f32) -> f32 { return 0.0; }
unsafe fn eval(c: String, b: i32) { return; }
fn do_thing<T: Clone>(t: T) where T: Default;

Fields

attributes: Vec<Attribute>

vis_marker: Option<VisMarker>

qualifiers: FnQualifiers

tk_fn_keyword: Ident

name: Ident

generic_params: Option<GenericParamList>

tk_params_parens: GroupSpan

params: Punctuated<FnParam>

where_clause: Option<WhereClause>

tk_return_arrow: Option<[Punct; 2]>

return_ty: Option<TypeExpr>

tk_semicolon: Option<Punct>

body: Option<Group>

Implementations

impl Function

pub fn span(&self) -> Span

Returns span of this item.

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

Formats the value using the given formatter.

impl ToTokens for Function

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.