Struct RustExpr

pub struct RustExpr<T: FromMacro>(pub T, pub ExprSep);

Extracts an expression according to Rust’s rule. Ends when encountering ,, ;, => or end of stream.

Example:

let mut iter = quote!(Red=Green.Blue,Yellow=>brown==orange;purple).into_iter();
let RustExpr(Stringify(next), _) = iter.extract()?;
assert_eq!(next, "Red = Green . Blue");
let RustExpr(Stringify(next), _) = iter.extract()?;
assert_eq!(next, "Yellow");
let RustExpr(Stringify(next), _) = iter.extract()?;
assert_eq!(next, "brown = =orange");
let RustExpr(Stringify(next), _) = iter.extract()?;
assert_eq!(next, "purple");
let EndOfStream = iter.extract()?;

Tuple Fields

0: T

1: ExprSep

Trait Implementations

impl<T: FromMacro> Extractor for RustExpr<T>

fn extract(iter: &mut impl Iterator<Item = TokenTree>) -> Result<Self, Error>