name: validate-syntax description: > L1-L4 語法和結構驗證 - 檢查 Python 語法、AST 結構、縮進格式、命名規範。 BlueMouse 17-Layer Validation Group 1。 Triggers: "syntax", "格式檢查", "naming", "PEP8" allowed-tools:

• Read
• Bash user-invocable: true context: fork

Validate Syntax Skill (L1-L4)

BlueMouse 17-Layer Validation System - Group 1: 語法和結構驗證

Two Ways to Use

1. AI-Guided Validation

Follow the checklist below to analyze code.

2. Script Execution

python3 .claude/skills/validate-syntax/validator.py myfile.py
python3 .claude/skills/validate-syntax/validator.py --json myfile.py

L1-L4 Validation Checklist

L1: 基本語法檢查

What: Code compiles without syntax errors

How:

compile(code, '<string>', 'exec')

Pass: No SyntaxError raised Fail: Report error: "語法錯誤: {error_message}"

L2: AST 結構檢查

What: Code contains at least one function or class definition

How:

tree = ast.parse(code)
has_definition = any(
    isinstance(node, (ast.FunctionDef, ast.ClassDef))
    for node in ast.walk(tree)
)

Pass: has_definition == True Fail: "缺少函數或類定義"

L3: 縮進和格式檢查

What: Proper indentation format

Rules:

1. No tab characters (\t) anywhere
2. Leading spaces must be multiples of 4

How:

for i, line in enumerate(lines, 1):
    if '\t' in line:
        issues.append(f"Line {i}: 使用 Tab 而非空格")
    leading_spaces = len(line) - len(line.lstrip())
    if leading_spaces % 4 != 0:
        issues.append(f"Line {i}: 縮進不是 4 的倍數")

Pass: No issues found Fail: "發現 N 個格式問題" + list first 3 issues

Examples:

# ✅ PASS: 4-space indentation
def foo():
    if True:
        return 1

# ❌ FAIL: Tab character
def foo():
	return 1  # Uses tab

# ❌ FAIL: 2-space indentation
def foo():
  return 1  # 2 spaces, not multiple of 4

L4: 命名規範檢查

What: PEP 8 naming conventions

Rules:

How:

for node in ast.walk(tree):
    if isinstance(node, ast.FunctionDef):
        if not re.match(r'^[a-z_][a-z0-9_]*$', node.name):
            issues.append(f"函數名 '{node.name}' 不符合 snake_case")
    if isinstance(node, ast.ClassDef):
        if not re.match(r'^[A-Z][a-zA-Z0-9]*$', node.name):
            issues.append(f"類名 '{node.name}' 不符合 PascalCase")

Pass: All names follow conventions → "命名符合 PEP 8" Fail: "發現 N 個命名問題" + list issues

Examples:

# ✅ PASS
def calculate_total():  # snake_case
    pass

class UserManager:  # PascalCase
    pass

# ❌ FAIL
def CalculateTotal():  # Should be snake_case
    pass

class user_manager:  # Should be PascalCase
    pass

Output Format

==================================================
L1-L4: 語法和結構驗證
==================================================

Status: ✅ PASSED / ❌ FAILED
Score: X/100 (N/4 layers)

✅/❌ L1: 基本語法檢查 - [message]
✅/❌ L2: AST 結構檢查 - [message]
✅/❌ L3: 縮進和格式檢查 - [message]
✅/❌ L4: 命名規範檢查 - [message]

Related Skills

Part of BlueMouse 17-Layer Validation System