Struct ExprWhile

#[non_exhaustive]
pub struct ExprWhile {
    pub attributes: Vec<Attribute>,
    pub label: Option<(Label, Colon)>,
    pub while_token: While,
    pub condition: Box<Condition>,
    pub body: Box<Block>,
}

A while loop.

• while [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 while loop

label: Option<(Label, Colon)>

A label for the while loop.

while_token: While

The while keyword.

condition: Box<Condition>

The name of the binding.

body: Box<Block>

The body of the while loop.

Implementations

impl ExprWhile

pub fn parse_with_meta( parser: &mut Parser<'_>, attributes: Vec<Attribute>, label: Option<(Label, Colon)>, ) -> Result<Self, Error>

Parse #ident and attach the given meta

Trait Implementations

impl Debug for ExprWhile

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

Formats the value using the given formatter.

impl OptionSpanned for ExprWhile

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

Get the optional span of the type.

impl Parse for ExprWhile

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

Parse the current item from the parser.

impl PartialEq for ExprWhile

fn eq(&self, other: &ExprWhile) -> 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 ExprWhile

fn span(&self) -> Span

Get the span of the type.

impl ToTokens for ExprWhile

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

Turn the current item into tokens.

impl TryClone for ExprWhile

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 ExprWhile

impl StructuralPartialEq for ExprWhile