platform/doc/reflection_system_overview.md
2024-11-29 08:36:20 -07:00

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# Reflection System Overview
## Project Summary
The reflection system implements the Dart mirrors API in a cross-platform compatible way. By following the established mirrors API design, we ensure our system provides familiar, comprehensive reflection capabilities while working across all Dart platforms. The implementation follows AI-CDS methodology to ensure high quality, maintainable, and efficient code.
## Core Architecture
### 1. Mirror System
The central entry point following Dart's MirrorSystem design:
```dart
abstract class MirrorSystem {
Map<Uri, LibraryMirror> get libraries;
LibraryMirror findLibrary(Symbol libraryName);
IsolateMirror get isolate;
TypeMirror get dynamicType;
TypeMirror get voidType;
TypeMirror get neverType;
}
```
### 2. Core Mirrors
The fundamental reflection capabilities:
```dart
abstract class Mirror {}
abstract class DeclarationMirror implements Mirror {
Symbol get simpleName;
Symbol get qualifiedName;
DeclarationMirror? get owner;
bool get isPrivate;
bool get isTopLevel;
List<InstanceMirror> get metadata;
}
abstract class ObjectMirror implements Mirror {
InstanceMirror invoke(Symbol memberName, List positionalArgs, [Map<Symbol, dynamic> namedArgs]);
InstanceMirror getField(Symbol fieldName);
InstanceMirror setField(Symbol fieldName, Object? value);
}
```
### 3. Type System
Complete type reflection support:
```dart
abstract class TypeMirror implements DeclarationMirror {
bool get hasReflectedType;
Type get reflectedType;
List<TypeVariableMirror> get typeVariables;
List<TypeMirror> get typeArguments;
bool get isOriginalDeclaration;
TypeMirror get originalDeclaration;
bool isSubtypeOf(TypeMirror other);
bool isAssignableTo(TypeMirror other);
}
```
## Implementation Strategy
### Phase-based Approach
1. **Core Mirror System**
- Mirror system implementation
- Basic reflection capabilities
- Type system foundation
- Symbol handling
2. **Type System**
- Complete type mirrors
- Generic support
- Type relationships
- Type variables
3. **Library Support**
- Library mirrors
- Declaration handling
- Privacy scope
- Dependencies
4. **Platform Support**
- Web optimization
- Native platform support
- Performance tuning
- Memory optimization
### AI Integration
- Interface validation
- Test generation
- Performance optimization
- Code pattern verification
### Quality Assurance
- Comprehensive test coverage
- Performance benchmarking
- Cross-platform validation
- Memory usage optimization
## Cross-Platform Support
### Web Platform
- Tree-shaking compatibility
- Minification support
- Browser optimizations
- Memory efficiency
### Native Platforms
- AOT compilation support
- Platform-specific optimizations
- Resource management
- Performance tuning
## Development Workflow
### Sprint Cycle
1. Interface Implementation
2. Behavior Verification
3. AI-Assisted Testing
4. Performance Optimization
5. Documentation Update
### AI-CDS Integration
1. API compliance verification
2. Test scenario generation
3. Implementation validation
4. Performance analysis
## Success Metrics
### Functional Requirements
- Complete mirrors API implementation
- Cross-platform compatibility
- Full type system support
- Library handling
### Performance Targets
- Fast reflection operations
- Efficient memory usage
- Quick startup time
- Low runtime overhead
### Quality Metrics
- 100% test coverage
- API compliance
- Performance benchmarks
- Memory targets
## Next Steps
### Immediate Actions
1. Implement MirrorSystem
2. Complete core mirrors
3. Add type system support
4. Begin library handling
### Long-term Goals
1. Full API implementation
2. Platform optimizations
3. Performance tuning
4. Documentation completion
## Support and Maintenance
### Ongoing Tasks
- API compliance monitoring
- Performance tracking
- Cross-platform testing
- Documentation updates
### Future Considerations
- New platform support
- Performance improvements
- API enhancements
- Optimization opportunities
This overview provides a comprehensive guide to our reflection system implementation, focusing on following the Dart mirrors API while ensuring cross-platform compatibility and performance.