from typing import List

def parse_code_structure(code: str) -> dict:
    """解析代码结构，返回基本信息"""
    lines = code.split('\n')
    return {
        "total_lines": len(lines),
        "non_empty_lines": len([l for l in lines if l.strip()]),
        "code_lines": lines
    }

def detect_language(code: str) -> str:
    """简单检测代码语言"""
    code_stripped = code.strip()
    
    if code_stripped.startswith(('def ', 'import ', 'from ', 'class ', 'if __name__')):
        return 'python'
    elif 'function' in code or 'const' in code or 'let' in code or '=>' in code:
        return 'javascript'
    elif 'public class' in code or 'private void' in code:
        return 'java'
    elif 'std::' in code or '#include <iostream>' in code:
        return 'cpp'
    
    return 'unknown'

def extract_code_blocks(text: str) -> List[str]:
    """从文本中提取代码块"""
    import re
    pattern = r'```[\w]*\n([\s\S]*?)```'
    matches = re.findall(pattern, text)
    return matches if matches else []