Struct rune::ast::ExprFor

pub struct ExprFor {
    pub attributes: Vec<Attribute>,
    pub label: Option<(Label, Colon)>,
    pub for_token: For,
    pub binding: Pat,
    pub in_: In,
    pub iter: Expr,
    pub body: Box<Block>,
}

A for loop over an iterator: for i in [1, 2, 3] {}.

Examples

use rune::{testing, ast};

testing::roundtrip::<ast::ExprFor>("for i in x {}");
testing::roundtrip::<ast::ExprFor>("for (a, _) in x {}");
testing::roundtrip::<ast::ExprFor>("'label: for i in x {}");
testing::roundtrip::<ast::ExprFor>("#[attr] 'label: for i in x {}");

Fields

attributes: Vec<Attribute>

The attributes of the for loop

label: Option<(Label, Colon)>

The label of the loop.

for_token: For

The for keyword.

binding: Pat

The pattern binding to use. Non-trivial pattern bindings will panic if the value doesn’t match.

in_: In

The in keyword.

iter: Expr

Expression producing the iterator.

body: Box<Block>

The body of the loop.

Trait Implementations

impl Clone for ExprFor

fn clone(&self) -> ExprFor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExprFor

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

Formats the value using the given formatter.

impl Eq for ExprFor

impl Parse for ExprFor

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

Parse the current item from the parser.

impl PartialEq<ExprFor> for ExprFor

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ExprFor) -> bool

This method tests for !=.

impl Spanned for ExprFor

fn span(&self) -> Span

Get the span of the type.

impl StructuralEq for ExprFor

impl StructuralPartialEq for ExprFor

impl ToTokens for ExprFor

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

Turn the current item into tokens.