Struct rune::ast::ExprIf

pub struct ExprIf {
    pub attributes: Vec<Attribute>,
    pub if_: If,
    pub condition: Condition,
    pub block: Box<Block>,
    pub expr_else_ifs: Vec<ExprElseIf>,
    pub expr_else: Option<ExprElse>,
}

An if statement: if cond { true } else { false }

Examples

use rune::{testing, ast};

testing::roundtrip::<ast::ExprIf>("if 0 {  }");
testing::roundtrip::<ast::ExprIf>("if 0 {  } else {  }");
testing::roundtrip::<ast::ExprIf>("if 0 {  } else if 0 {  } else {  }");
testing::roundtrip::<ast::ExprIf>("if let v = v {  }");
testing::roundtrip::<ast::ExprIf>("#[attr] if 1 {} else {}");

Fields

attributes: Vec<Attribute>

The attributes of the if statement

if_: If

The if token.

condition: Condition

The condition to the if statement.

block: Box<Block>

The body of the if statement.

expr_else_ifs: Vec<ExprElseIf>

Else if branches.

expr_else: Option<ExprElse>

The else part of the if expression.

Implementations

impl ExprIf

pub fn parse_with_meta(
    parser: &mut Parser<'_>,
    attributes: Vec<Attribute>
) -> Result<Self, ParseError>

Parse #ident and attach the given meta

Trait Implementations

impl Clone for ExprIf

fn clone(&self) -> ExprIf

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExprIf

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

Formats the value using the given formatter.

impl Eq for ExprIf

impl Parse for ExprIf

fn parse(p: &mut Parser<'_>) -> Result<Self, ParseError>

Parse the current item from the parser.

impl PartialEq<ExprIf> 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 Spanned for ExprIf

fn span(&self) -> Span

Get the span of the type.

impl StructuralEq for ExprIf

impl StructuralPartialEq for ExprIf

impl ToTokens for ExprIf

fn to_tokens(&self, context: &MacroContext, stream: &mut TokenStream)

Turn the current item into tokens.