"""仅运行本文件内可信合成源码，分别定位解析、导入与构造故障。"""
import ast
import json
from pathlib import Path
import subprocess
import sys
from tempfile import TemporaryDirectory

sources = {
    'syntax': 'class SignalEngine(:\n    pass\n',
    'self_import': 'from signal_engine import SignalEngine\nclass SignalEngine: pass\n',
    'top_level': 'raise RuntimeError("top-level side effect")\nclass SignalEngine: pass\n',
    'constructor': 'class SignalEngine:\n    def __init__(self, window): self.window=window\n',
    'fixed': ('class SignalEngine:\n'
              '    def __init__(self, window=3): self.window=window\n'
              '    def generate(self, closes):\n'
              '        return [int(i >= self.window-1 and x > '
              'sum(closes[i-self.window+1:i+1])/self.window) '
              'for i,x in enumerate(closes)]\n'),
}
report = {}
with TemporaryDirectory(prefix='r580-') as directory:
    path = Path(directory) / 'signal_engine.py'
    for label, source in sources.items():
        try:
            ast.parse(source)
        except SyntaxError:
            report[label] = 'parse:SyntaxError'
            continue
        path.write_text(source, encoding='utf-8')
        command = ('import signal_engine; '
                   'obj=signal_engine.SignalEngine(); '
                   'print(obj.generate([10,10,12]))')
        result = subprocess.run([sys.executable, '-B', '-c', command], cwd=directory,
                                text=True, capture_output=True, timeout=5)
        if result.returncode == 0:
            report[label] = result.stdout.strip()
        elif 'ImportError' in result.stderr:
            report[label] = 'import:ImportError'
        elif 'RuntimeError' in result.stderr:
            report[label] = 'import:RuntimeError'
        elif 'TypeError' in result.stderr:
            report[label] = 'construct:TypeError'
        else:
            raise AssertionError(result.stderr)
assert report == {'syntax': 'parse:SyntaxError', 'self_import': 'import:ImportError',
                  'top_level': 'import:RuntimeError', 'constructor': 'construct:TypeError',
                  'fixed': '[0, 0, 1]'}
print(json.dumps(report))