Enum syn::Pat
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pub enum Pat { Wild(PatWild), Ident(PatIdent), Struct(PatStruct), TupleStruct(PatTupleStruct), Path(PatPath), Tuple(PatTuple), Box(PatBox), Ref(PatRef), Lit(PatLit), Range(PatRange), Slice(PatSlice), Macro(PatMacro), Verbatim(PatVerbatim), }
A pattern in a local binding, function signature, match expression, or various other places.
This type is available if Syn is built with the "full"
feature.
Syntax tree enum
This type is a syntax tree enum.
Variants
Wild(PatWild)
A pattern that matches any value: _
.
This type is available if Syn is built with the "full"
feature.
Ident(PatIdent)
A pattern that binds a new variable: ref mut binding @ SUBPATTERN
.
This type is available if Syn is built with the "full"
feature.
Struct(PatStruct)
A struct or struct variant pattern: Variant { x, y, .. }
.
This type is available if Syn is built with the "full"
feature.
TupleStruct(PatTupleStruct)
A tuple struct or tuple variant pattern: Variant(x, y, .., z)
.
This type is available if Syn is built with the "full"
feature.
Path(PatPath)
A path pattern like Color::Red
, optionally qualified with a
self-type.
Unquailfied path patterns can legally refer to variants, structs,
constants or associated constants. Quailfied path patterns like
<A>::B::C
and <A as Trait>::B::C
can only legally refer to
associated constants.
This type is available if Syn is built with the "full"
feature.
Tuple(PatTuple)
A tuple pattern: (a, b)
.
This type is available if Syn is built with the "full"
feature.
Box(PatBox)
A box pattern: box v
.
This type is available if Syn is built with the "full"
feature.
Ref(PatRef)
A reference pattern: &mut (first, second)
.
This type is available if Syn is built with the "full"
feature.
Lit(PatLit)
A literal pattern: 0
.
This holds an Expr
rather than a Lit
because negative numbers
are represented as an Expr::Unary
.
This type is available if Syn is built with the "full"
feature.
Range(PatRange)
A range pattern: 1..=2
.
This type is available if Syn is built with the "full"
feature.
Slice(PatSlice)
A dynamically sized slice pattern: [a, b, i.., y, z]
.
This type is available if Syn is built with the "full"
feature.
Macro(PatMacro)
A macro in expression position.
This type is available if Syn is built with the "full"
feature.
Verbatim(PatVerbatim)
Tokens in pattern position not interpreted by Syn.
This type is available if Syn is built with the "full"
feature.
Trait Implementations
impl Synom for Pat
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fn parse(i: Cursor) -> PResult<Self>
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fn description() -> Option<&'static str>
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A short name of the type being parsed. Read more
impl Debug for Pat
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl Eq for Pat
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impl PartialEq for Pat
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fn eq(&self, __arg_0: &Pat) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Pat) -> bool
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This method tests for !=
.
impl Hash for Pat
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fn hash<__H: Hasher>(&self, __arg_0: &mut __H)
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Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Clone for Pat
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fn clone(&self) -> Pat
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl From<PatWild> for Pat
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impl From<PatIdent> for Pat
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impl From<PatStruct> for Pat
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impl From<PatTupleStruct> for Pat
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fn from(e: PatTupleStruct) -> Pat
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Performs the conversion.
impl From<PatPath> for Pat
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impl From<PatTuple> for Pat
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impl From<PatBox> for Pat
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impl From<PatRef> for Pat
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impl From<PatLit> for Pat
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impl From<PatRange> for Pat
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impl From<PatSlice> for Pat
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impl From<PatMacro> for Pat
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impl From<PatVerbatim> for Pat
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fn from(e: PatVerbatim) -> Pat
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Performs the conversion.
impl ToTokens for Pat
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fn to_tokens(&self, tokens: &mut Tokens)
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Write self
to the given Tokens
. Read more
fn into_tokens(self) -> Tokens
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Convert self
directly into a Tokens
object. Read more