Struct ExprClosure

#[non_exhaustive]
pub struct ExprClosure {
    pub attributes: Vec<Attribute>,
    pub async_token: Option<Async>,
    pub move_token: Option<Move>,
    pub args: ExprClosureArgs,
    pub body: Box<Expr>,
    /* private fields */
}

A closure expression.

• || <expr>.
• async || <expr>.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

attributes: Vec<Attribute>

The attributes for the async closure

async_token: Option<Async>

If the closure is async or not.

move_token: Option<Move>

If the closure moves data into it.

args: ExprClosureArgs

Arguments to the closure.

body: Box<Expr>

The body of the closure.

Implementations

impl ExprClosure

pub fn parse_with_meta( parser: &mut Parser<'_>, attributes: Vec<Attribute>, async_token: Option<Async>, move_token: Option<Move>, ) -> Result<Self, Error>

Parse #ident and attach the given meta

impl ExprClosure

pub fn item_span(&self) -> Span

Get the identifying span for this closure.

Trait Implementations

impl Debug for ExprClosure

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

Formats the value using the given formatter.

impl OptionSpanned for ExprClosure

fn option_span(&self) -> Option<Span>

Get the optional span of the type.

impl Parse for ExprClosure

fn parse(p: &mut Parser<'_>) -> Result<Self>

Parse the current item from the parser.

impl PartialEq for ExprClosure

fn eq(&self, other: &ExprClosure) -> 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 Spanned for ExprClosure

fn span(&self) -> Span

Get the span of the type.

impl ToTokens for ExprClosure

fn to_tokens( &self, context: &mut MacroContext<'_, '_, '_>, stream: &mut TokenStream, ) -> Result<()>

Turn the current item into tokens.

impl TryClone for ExprClosure

fn try_clone(&self) -> Result<Self>

Try to clone the current value, raising an allocation error if it’s unsuccessful.

fn try_clone_from(&mut self, source: &Self) -> Result<(), Error>

Performs copy-assignment from source.

impl Eq for ExprClosure

impl StructuralPartialEq for ExprClosure