from typing import Dict, Any

class ArchitectureAnalyzer:
    async def analyze(self, system_state):
        # Implementation would go here
        return {}

class ModificationPlanner:
    async def generate_plan(self, analysis, performance_metrics):
        # Implementation would go here
        return {}

class SafetyValidator:
    async def validate_modifications(self, modification_plan):
        # Implementation would go here
        return True

class EvolutionExecutor:
    async def execute_evolution(self, modification_plan):
        # Implementation would go here
        return {'status': 'evolution_completed', 'changes': {}}

class SelfEvolutionFramework:
    def __init__(self):
        self.architecture_analyzer = ArchitectureAnalyzer()
        self.modification_planner = ModificationPlanner()
        self.safety_validator = SafetyValidator()
        self.evolution_executor = EvolutionExecutor()

    async def evolve_system(self,
                           performance_metrics: Dict[str, float],
                           system_state: Dict[str, Any]) -> Dict[str, Any]:
        analysis = await self.architecture_analyzer.analyze(system_state)
        modification_plan = await self.modification_planner.generate_plan(
            analysis,
            performance_metrics
        )

        if await self.safety_validator.validate_modifications(modification_plan):
            return await self.evolution_executor.execute_evolution(modification_plan)

        return {'status': 'evolution_blocked', 'reason': 'safety_constraints'}