Enum Pat

#[non_exhaustive]
pub enum Pat {
    Ignore(PatIgnore),
    Path(PatPath),
    Lit(PatLit),
    Vec(PatVec),
    Tuple(PatTuple),
    Object(PatObject),
    Binding(PatBinding),
    Rest(PatRest),
}

A pattern match.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Ignore(PatIgnore)

An ignored binding _.

Path(PatPath)

A variable binding n.

Lit(PatLit)

A literal pattern. This is represented as an expression.

Vec(PatVec)

A vector pattern.

Tuple(PatTuple)

A tuple pattern.

Object(PatObject)

An object pattern.

Binding(PatBinding)

A binding a: pattern or "foo": pattern.

Rest(PatRest)

The rest pattern ...

Trait Implementations

impl Debug for Pat

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

Formats the value using the given formatter.

impl OptionSpanned for Pat

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

Get the optional span of the type.

impl Parse for Pat

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

Parse the current item from the parser.

impl PartialEq for Pat

fn eq(&self, other: &Pat) -> 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 Peek for Pat

fn peek(p: &mut Peeker<'_>) -> bool

Peek the parser for the given token.

impl Spanned for Pat

fn span(&self) -> Span

Get the span of the type.

impl ToTokens for Pat

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

Turn the current item into tokens.

impl TryClone for Pat

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 Pat

impl StructuralPartialEq for Pat