Method parse

assert-struct-macros/src/pattern/range.rs:28–43

Parses a range pattern expression. # Example Input ```text 10..20 0..=100 ..10 5.. ``` This parses any valid Rust range expression.

(input: syn::parse::ParseStream)

    ///
    /// This parses any valid Rust range expression.
    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
        let expr: syn::Expr = input.parse()?;

        // Verify this is actually a range expression
        if !matches!(expr, syn::Expr::Range(_)) {
            return Err(syn::Error::new_spanned(
                &expr,
                "Expected a range expression",
            ));
        }

        Ok(PatternRange {
            node_id: next_node_id(),
            expr,
        })
    }
}