import ast
from typing import Dict, Any

class PythonASTParser:
    """Parses Python source code to extract symbols and import graphs."""
    
    def parse(self, source_code: str) -> Dict[str, Any]:
        try:
            tree = ast.parse(source_code)
        except SyntaxError:
            return {"classes": [], "functions": [], "imports": []}
            
        symbols = {"classes": [], "functions": [], "imports": []}
        
        for node in ast.walk(tree):
            if isinstance(node, ast.ClassDef):
                symbols["classes"].append(node.name)
            elif isinstance(node, ast.FunctionDef):
                symbols["functions"].append(node.name)
            elif isinstance(node, ast.Import):
                for alias in node.names:
                    symbols["imports"].append(alias.name)
            elif isinstance(node, ast.ImportFrom):
                if node.module:
                    symbols["imports"].append(node.module)
                
        return symbols