Struct syn::ExprIf

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

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

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

A short name of the type being parsed.

impl ToTokens for ExprIf

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

Write self to the given TokenStream.

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object.

impl Debug for ExprIf

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

Formats the value using the given formatter.

impl Eq for ExprIf

impl PartialEq for ExprIf

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 Hash for ExprIf

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 Clone for ExprIf

fn clone(&self) -> ExprIf

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl From<ExprIf> for Expr

fn from(e: ExprIf) -> Expr

Performs the conversion.