Struct syn::ExprIf

[+] Show declaration

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 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 Parse for ExprIf[+]

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fn parse(input: ParseStream) -> Result<Self>

impl From<ExprIf> for Expr[+]

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fn from(e: ExprIf) -> Expr[−]

Performs the conversion.

impl Clone for ExprIf[+]

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fn clone(&self) -> ExprIf[−]

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Eq for ExprIf

impl PartialEq<ExprIf> for ExprIf[+]

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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 ==.

fn ne(&self, other: &ExprIf) -> bool[−]

This method tests for !=.

impl Debug for ExprIf[+]

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fn fmt(&self, f: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

impl Hash for ExprIf[+]

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

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, [−]

Feeds a slice of this type into the given [Hasher].

impl StructuralPartialEq for ExprIf

impl StructuralEq for ExprIf

impl ToTokens for ExprIf[+]

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

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream[−]

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream[−]

Convert self directly into a TokenStream object.