Trait HasSpan

Source

pub trait HasSpan {
    // Required method
    fn span(&self) -> Span;
}

Expand description

Provides a token’s source span for diagnostics.

§Examples

use cel_parser::lex_lexer::HasSpan;

let input: proc_macro2::TokenStream = "name".parse()?;
let token = input.into_iter().next().unwrap();
assert_eq!(HasSpan::span(&token).source_text().as_deref(), Some("name"));

Required Methods§

Source

fn span(&self) -> Span

Returns the source span associated with this token.

§Examples

use cel_parser::lex_lexer::HasSpan;

let input: proc_macro2::TokenStream = "42".parse()?;
let token = input.into_iter().next().unwrap();
assert_eq!(HasSpan::span(&token).source_text().as_deref(), Some("42"));