Function expand_range_assertion

assert-struct-macros/src/expand.rs:482–501

Generate range assertion with error collection

(value_expr: &TokenStream, pattern: &PatternRange)

/// Generate range assertion with error collection
fn expand_range_assertion(value_expr: &TokenStream, pattern: &PatternRange) -> TokenStream {
    let range = &pattern.expr;

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

    quote_spanned! {span=>
        match &#value_expr {
            #range => {},
            _ => {
                #error_push
            }
        }
    }
}

/// Generate string literal assertion with error collection
/// String literals always use .as_ref() to handle String/&str matching