Struct syn::ExprIf [−][src]
pub struct ExprIf { pub attrs: Vec<Attribute>, pub if_token: If, pub cond: Box<Expr>, pub then_branch: Block, pub else_branch: Option<(Else, Box<Expr>)>, }
An if
expression with an optional else
block: if expr { ... } else { ... }
.
The else
branch expression may only be an If
, IfLet
, or
Block
expression, not any of the other types of expression.
This type is available if Syn is built with the "full"
feature.
Fields
attrs: Vec<Attribute>
if_token: If
cond: Box<Expr>
then_branch: Block
else_branch: Option<(Else, Box<Expr>)>
Trait Implementations
impl Synom for ExprIf
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impl Synom for ExprIf
fn parse(i: Cursor) -> PResult<Self>
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fn parse(i: Cursor) -> PResult<Self>
fn description() -> Option<&'static str>
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fn description() -> Option<&'static str>
A short name of the type being parsed. Read more
impl ToTokens for ExprIf
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impl ToTokens for ExprIf
fn to_tokens(&self, tokens: &mut TokenStream)
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fn to_tokens(&self, tokens: &mut TokenStream)
Write self
to the given TokenStream
. Read more
fn into_token_stream(self) -> TokenStream
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fn into_token_stream(self) -> TokenStream
Convert self
directly into a TokenStream
object. Read more
impl Debug for ExprIf
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impl Debug for ExprIf
fn fmt(&self, f: &mut Formatter) -> Result
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fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl Eq for ExprIf
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impl Eq for ExprIf
impl PartialEq for ExprIf
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impl PartialEq for ExprIf
fn eq(&self, other: &ExprIf) -> bool
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fn eq(&self, other: &ExprIf) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &ExprIf) -> bool
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fn ne(&self, other: &ExprIf) -> bool
This method tests for !=
.
impl Hash for ExprIf
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impl Hash for ExprIf
fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Clone for ExprIf
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impl Clone for ExprIf
fn clone(&self) -> ExprIf
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fn clone(&self) -> ExprIf
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl From<ExprIf> for Expr
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impl From<ExprIf> for Expr