refactor: migrate parser from regex to token-based parser combinator #29
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- Replace monolithic parser_combinator.rb (2833 lines) with modular architecture - Add Scanner for tokenization with regex literal support - Create IR::InterpolatedString for string interpolation parsing - Fix type inference for interpolated strings (returns String) - Add TRuby::ParseError for unified error handling - Organize parsers into primitives/, combinators/, and token/ directories - Each file contains exactly one class (snake_case filename matches PascalCase class)
…ressions - Add ternary operator (? :) parsing in ExpressionParser - Support double splat (**opts) and single splat (*args) in method calls - Support keyword arguments (name: value) in method calls - Allow case/if/unless/begin as assignment right-hand side values - Improve generic type compatibility (Array[untyped] with Array[T]) Fixes type inference errors in keyword_args samples.
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Summary
Completely replaced regex-based parsing with token-based parser
Before → After
Key Benefits
Others
? :) parsing support*) and double splat (**) argument parsing