feat(phase-3): parser implementation #3
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Parser complete! Converts token stream into YamlValue structures. Implementation: - parse() - entry point, handles empty documents - parse_value() - dispatcher (detects mapping/sequence/scalar) - parse_mapping() - collects key:value pairs - parse_sequence() - collects list items - parse_scalar() - converts tokens to YamlValue Features: - Recursive descent parsing - INDENT/DEDENT token handling for nesting - Support for inline and indented values - Proper ownership transfer (using ^ operator) - Type-safe scalar conversion (int, float, bool, string, null) YamlValue enhancements: - Added static factory methods (null(), bool(), integer(), float(), string(), sequence(), mapping()) - Fixed ownership semantics for collections - as_mapping() now returns a copy to avoid ownership issues Testing: - 10 new parser tests covering: - Empty input - All scalar types - Simple mappings - Multiple key-value pairs - Simple sequences - Total: 84 tests passing (74 lexer + 10 parser) Next: Phase 4 - Nested structures, public API, and examples Co-Authored-By: Warp <agent@warp.dev>
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Phase 3: Parser implementation - recursive descent parser that converts tokens to YamlValue structures. Added 10 parser tests. Total: 84 tests passing.