feat: implement pattern matching through is/match expressions and destructuring - #14
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- Add parsing, representation, and evaluation support for `match` expressions. - Implement the `enumerate` iterator combinator for enhanced iteration capabilities. - Replace identifiers for keywords with `KW` suffix for consistency in `SyntaxKind`. - Update `STMT`, `PATTERN`, and related sets to reflect changes in syntax representation. - Refactor destructuring logic to handle `match` patterns, with support for guards. - Extend test coverage and add examples showcasing `match` expression functionality.
…teral parsing
- Replace `block_or_lambda` with `expr_with_braces` to simplify brace-handling logic.
- Update brace-handling to support blocks, lambdas, map literals, and destructuring assignments.
- Refactor `map` parsing to handle empty map literals explicitly and improve shorthand syntax.
- Deprecate `Hash` prefix for map literals (`#{}` → `{}`) for consistency with other syntax.
- Introduce `E0311` diagnostic for mismatched bindings within `match` arm patterns.
- Extend parser and test coverage for new brace-handling capabilities and error scenarios.
…ling - Introduce `is` expressions with support for type-based pattern matching and typed bindings. - Add support for flow scopes to handle temporary variables within expressions. - Refactor conditional expression parsing to allow omitting parentheses in conditions. - Deprecate parentheses in conditions with a warning for compatibility. - Extend parser, evaluator, and syntax definitions to support new features and improve error diagnostics. - Update test cases and examples to demonstrate `is` expressions and scope improvements.
…in conditions - Refactor delimiter error reporting for better accuracy and cleaner code. - Deprecate parentheses in conditions (`if`, `while`, `for`) with warnings for compatibility. - Update test cases, examples, and error diagnostics to reflect new behaviour.
- Implement map destructuring in bindings, including support for spread (`..`) and binding of remaining keys. - Add error handling for unmatched or missing keys in map destructuring with `E0302` diagnostics. - Enhance pattern matching to support named and unnamed map destructuring patterns.
…iagnostics - Add `E0303` diagnostic for missing keys in map patterns and integrate it into destructuring logic. - Refactor destructuring to provide detailed error messages with hints for unmatched keys and pattern paths. - Improve diagnostics for destructuring nested patterns and guards.
Dutch-Raptor
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Jan 19, 2026
refactor: implement compose_doc! tests with doctests instead of compile time tests. require parens around conditions and for expressions
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- Limit concurrent runs using workflow grouping and cancellation. - Treat all warnings as errors by setting `RUSTFLAGS`.
…in error code explanations, improve documentation
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