Function expand_regex_assertion

assert-struct-macros/src/expand.rs:601–622

Generate regex assertion with error collection

(value_expr: &TokenStream, pattern: &PatternRegex)

#[cfg(feature = "regex")]
/// Generate regex assertion with error collection
fn expand_regex_assertion(value_expr: &TokenStream, pattern: &PatternRegex) -> TokenStream {
    let pattern_str = &pattern.pattern;
    let span = pattern.span;

    let error_push = generate_error_push(
        span,
        quote!(format!("{:?}", #value_expr)),
        quote!(None),
        pattern.node_id,
    );

    quote_spanned! {span=>
        {
            use ::assert_struct::Like;
            let re = ::assert_struct::__macro_support::Regex::new(#pattern_str)
                .expect(concat!("Invalid regex pattern: ", #pattern_str));
            if !#value_expr.like(&re) {
                #error_push
            }
        }
    }
}

#[cfg(feature = "regex")]
/// Generate Like trait assertion with error collection