Enum syn::Pat[][src]

pub enum Pat {
Show 16 variants 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
}
This is supported on crate feature full only.
Expand description

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.

Tuple Fields of Box

0: PatBox
Ident(PatIdent)

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

Tuple Fields of Ident

0: PatIdent
Lit(PatLit)

A literal pattern: 0.

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

Tuple Fields of Lit

0: PatLit
Macro(PatMacro)

A macro in pattern position.

Tuple Fields of Macro

0: PatMacro
Or(PatOr)

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

Tuple Fields of Or

0: PatOr
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.

Tuple Fields of Path

0: PatPath
Range(PatRange)

A range pattern: 1..=2.

Tuple Fields of Range

0: PatRange
Reference(PatReference)

A reference pattern: &mut var.

Tuple Fields of Reference

0: PatReference
Rest(PatRest)

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

Tuple Fields of Rest

0: PatRest
Slice(PatSlice)

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

Tuple Fields of Slice

0: PatSlice
Struct(PatStruct)

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

Tuple Fields of Struct

0: PatStruct
Tuple(PatTuple)

A tuple pattern: (a, b).

Tuple Fields of Tuple

0: PatTuple
TupleStruct(PatTupleStruct)

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

Tuple Fields of TupleStruct

0: PatTupleStruct
Type(PatType)

A type ascription pattern: foo: f64.

Tuple Fields of Type

0: PatType
Verbatim(TokenStream)

Tokens in pattern position not interpreted by Syn.

Tuple Fields of Verbatim

0: TokenStream
Wild(PatWild)

A pattern that matches any value: _.

Tuple Fields of Wild

0: PatWild

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Write self to the given TokenStream. Read more

Convert self directly into a TokenStream object. Read more

Convert self directly into a TokenStream object. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

This is supported on crate features parsing and printing only.

Returns a Span covering the complete contents of this syntax tree node, or Span::call_site() if this node is empty. Read more

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.