- Add loadPristineAst method to CompilerBase for independent AST loading
- Introduce PreparedProjectCacheTrait with conservative whole-project caching mechanism
- Implement translation unit splitting for large C++ files with splitLargeTranslationUnit
- Add preprocessing warning count tracking in CompilerDiagnosticTrait
- Enhance gen_stub.php to use cached AST when available instead of reparsing
- Improve incremental compilation checks with splitTranslationUnits validation
- Add comprehensive test coverage for AST caching, prepared project cache, and translation unit splitting
- Optimize precompiled header manager with dependency digest caching and improved invalidation
- Implement file digest memoization for faster native compilation input processing
- Add support for persistent AST cache reuse across compiler processes
- Implement cache size limit of 8 entries and age limit of 30 days
- Add markUsedAndPrune method to handle cache cleanup when accessing entries
- Create getCacheEntries method to retrieve and sort cache entries by modification time
- Implement removeCacheDirectory method for recursive directory deletion
- Add unit tests covering expired and excess cache entry pruning scenarios
- Include cstring header in global headers and remove duplicate inclusion in generated code
- Update version from 1097 to 1098
- Replace direct php::concat calls with flattened concatenation using parseFlattenedConcat
- Add prepareConcatOperand method to handle proper string conversion for different types
- Implement unified foreach iterator using php::ForeachIterator for both arrays and objects
- Remove separate parseForeachObject method and consolidate iteration logic
- Add support for precompiled headers in GCC-like backends
- Implement PrecompiledHeaderManager for PCH preparation and caching
- Optimize build queue with SourceCompileQueue using largest-first sorting strategy
- Improve progress percentage calculation during compilation
- Add new test case for unified foreach iteration over different iterable types
韩天峰