- Implement anonymous and arrow generator closures with lazy execution
- Add proper context preservation for closure generator compilation
- Support yield evaluation order with key and value side effects
- Enable yield from with iterator evaluation order matching PHP behavior
- Add FiberGenerator as global type replacing TypePHP\FiberGenerator
- Implement proper return value handling for closed and failed generators
- Add validation for generator closure parameter restrictions
- Support reentrant generator advance with error handling
- Add comprehensive test coverage for generator edge cases
- Add support for array references using byRef flag in ArrayExpressionTrait
- Modify hasReference check in array parsing logic to handle mixed references
- Implement reference value parsing with proper error handling for unpacking
- Enhance foreach reference binding with improved type checking and error messages
- Add proper scope handling for foreach iterators with class context
- Update foreach value assignment to use correct reference expression syntax
- Implement structural mutation protection for std containers during iteration
- Add comprehensive test coverage for foreach edge cases and reference mutations
- Document std container modification restrictions during foreach loops
- Update yield from and foreach documentation for iterator handling differences
- Add proper exception rethrow mechanism using typephp_fiber_rethrow in compiler
- Implement comprehensive generator return type validation supporting UnionType, IntersectionType, and nullable types
- Add support for constructor property promotion in generator functions
- Enhance generator destructor handling with proper finally block execution
- Implement proper exception boundary crossing between Fiber and generator contexts
- Add comprehensive test coverage for generator lifecycle, yielding, and error scenarios
- Update documentation to reflect new supported return types including object and mixed
- Fix parameter validation and type checking integration within generator functions
- Add proper handling of yield from delegation with throw and return value preservation
- Implement automatic key tracking for generator yield operations
- Add validation for recursive IteratorAggregate cycles in yield from operations
- Implement FiberGenerator trait with yield/yield from parsing
- Add generator detection and preparation logic in function compilation
- Generate TypePHP\FiberGenerator objects that implement Iterator
- Support yield expressions and statements with key-value pairs
- Enable yield from delegation with array and traversable forwarding
- Register fiber generator class entry during module initialization
- Update runtime initialization to use typephp_runtime_init
- Replace php_aot_ prefixed helpers with typephp_ prefixed versions
- Add comprehensive generator test suite covering various scenarios
- Document generator limitations and compatibility restrictions
- Mark dynamic PHP foreach over native generators as XFAIL case
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