[−][src]Enum syn::Pat

pub enum Pat {
    Box(PatBox),
    Ident(PatIdent),
    Lit(PatLit),
    Macro(PatMacro),
    Or(PatOr),
    Path(PatPath),
    Range(PatRange),
    Reference(PatReference),
    Rest(PatRest),
    Slice(PatSlice),
    Struct(PatStruct),
    Tuple(PatTuple),
    TupleStruct(PatTupleStruct),
    Type(PatType),
    Verbatim(TokenStream),
    Wild(PatWild),
    // some variants omitted
}

A pattern in a local binding, function signature, match expression, or various other places.

This type is available only if Syn is built with the "full" feature.

Syntax tree enum

This type is a syntax tree enum.

Variants

Box(PatBox)

A box pattern: box v.

Ident(PatIdent)

A pattern that binds a new variable: ref mut binding @ SUBPATTERN.

Lit(PatLit)

A literal pattern: 0.

This holds an Expr rather than a Lit because negative numbers are represented as an Expr::Unary.

Macro(PatMacro)

A macro in pattern position.

Or(PatOr)

A pattern that matches any one of a set of cases.

Path(PatPath)

A path pattern like Color::Red, optionally qualified with a self-type.

Unqualified path patterns can legally refer to variants, structs, constants or associated constants. Qualified path patterns like <A>::B::C and <A as Trait>::B::C can only legally refer to associated constants.

Range(PatRange)

A range pattern: 1..=2.

Reference(PatReference)

A reference pattern: &mut var.

Rest(PatRest)

The dots in a tuple or slice pattern: [0, 1, ..]

Slice(PatSlice)

A dynamically sized slice pattern: [a, b, ref i @ .., y, z].

Struct(PatStruct)

A struct or struct variant pattern: Variant { x, y, .. }.

Tuple(PatTuple)

A tuple pattern: (a, b).

TupleStruct(PatTupleStruct)

A tuple struct or tuple variant pattern: Variant(x, y, .., z).

Type(PatType)

A type ascription pattern: foo: f64.

Verbatim(TokenStream)

Tokens in pattern position not interpreted by Syn.

Wild(PatWild)

A pattern that matches any value: _.

Trait Implementations

`impl Clone for Pat`[src]

`fn clone(&self) -> Self`[src]

`fn clone_from(&mut self, source: &Self)`1.0.0[src]

`impl From<PatBox> for Pat`[src]

`fn from(e: PatBox) -> Pat`[src]

`impl From<PatIdent> for Pat`[src]

`fn from(e: PatIdent) -> Pat`[src]

`impl From<PatLit> for Pat`[src]

`fn from(e: PatLit) -> Pat`[src]

`impl From<PatMacro> for Pat`[src]

`fn from(e: PatMacro) -> Pat`[src]

`impl From<PatOr> for Pat`[src]

`fn from(e: PatOr) -> Pat`[src]

`impl From<PatPath> for Pat`[src]

`fn from(e: PatPath) -> Pat`[src]

`impl From<PatRange> for Pat`[src]

`fn from(e: PatRange) -> Pat`[src]

`impl From<PatReference> for Pat`[src]

`fn from(e: PatReference) -> Pat`[src]

`impl From<PatRest> for Pat`[src]

`fn from(e: PatRest) -> Pat`[src]

`impl From<PatSlice> for Pat`[src]

`fn from(e: PatSlice) -> Pat`[src]

`impl From<PatStruct> for Pat`[src]

`fn from(e: PatStruct) -> Pat`[src]

`impl From<PatTuple> for Pat`[src]

`fn from(e: PatTuple) -> Pat`[src]

`impl From<PatTupleStruct> for Pat`[src]

`fn from(e: PatTupleStruct) -> Pat`[src]

`impl From<PatType> for Pat`[src]

`fn from(e: PatType) -> Pat`[src]

`impl From<PatWild> for Pat`[src]

`fn from(e: PatWild) -> Pat`[src]

`impl Parse for Pat`[src]

`fn parse(input: ParseStream<'_>) -> Result<Self>`[src]

`impl ToTokens for Pat`[src]

`fn to_tokens(&self, tokens: &mut TokenStream)`[src]

`fn to_token_stream(&self) -> TokenStream`[src]

`fn into_token_stream(self) -> TokenStream`[src]

Auto Trait Implementations

`impl RefUnwindSafe for Pat`

`impl !Send for Pat`

`impl !Sync for Pat`

`impl Unpin for Pat`

`impl UnwindSafe for Pat`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> From<T> for T`[src]

`pub fn from(t: T) -> T`[src]

`impl<T, U> Into<U> for T where U: From<T>,` [src]

`pub fn into(self) -> U`[src]

`impl<T> Spanned for T where T: Spanned + ?Sized,` [src]

`pub fn span(&Self) -> Span`[src]

`impl<T> ToOwned for T where T: Clone,` [src]

`type Owned = T`

The resulting type after obtaining ownership.

`pub fn to_owned(&self) -> T`[src]

`pub fn clone_into(&self, target: &mut T)`[src]

`impl<T, U> TryFrom<U> for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

`pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

`impl<T, U> TryInto<U> for T where U: TryFrom<T>,` [src]

`type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

`pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]