Struct ExprIf

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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>)>,
}
Expand description

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.

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§attrs: Vec<Attribute>§if_token: If§cond: Box<Expr>§then_branch: Block§else_branch: Option<(Else, Box<Expr>)>

Trait Implementations§

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impl Clone for ExprIf

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fn clone(&self) -> ExprIf

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ExprIf

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

Formats the value using the given formatter. Read more
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impl From<ExprIf> for Expr

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fn from(e: ExprIf) -> Expr

Converts to this type from the input type.
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impl Hash for ExprIf

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for ExprIf

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fn eq(&self, other: &ExprIf) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Synom for ExprIf

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fn parse(i: Cursor<'_>) -> PResult<'_, Self>

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fn description() -> Option<&'static str>

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impl ToTokens for ExprIf

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fn to_tokens(&self, tokens: &mut Tokens)

Write self to the given Tokens. Read more
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fn into_tokens(self) -> Tokens
where Self: Sized,

Convert self directly into a Tokens object. Read more
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impl Eq for ExprIf

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impl StructuralPartialEq for ExprIf

Auto Trait Implementations§

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impl Freeze for ExprIf

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impl RefUnwindSafe for ExprIf

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impl !Send for ExprIf

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impl !Sync for ExprIf

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impl Unpin for ExprIf

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impl UnwindSafe for ExprIf

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Spanned for T
where T: ToTokens,

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fn span(&self) -> Span

Returns a Span covering the complete contents of this syntax tree node, or Span::call_site() if this node is empty.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.