with open('D:\\app\\ai\\app-grosir\\test_syntax2.dart', 'r') as f:
    lines = f.readlines()

for i, line in enumerate(lines):
    stripped = line.strip()
    if stripped.startswith('//') or stripped.startswith('/*') or stripped.startswith('*'):
        continue
    in_string = False
    escape = False
    for j, c in enumerate(line):
        if escape:
            escape = False
            continue
        if c == '\\':
            escape = True
            continue
        if c in "'\"":
            if not in_string:
                in_string = True
            else:
                in_string = False
    if in_string:
        print(f'Unclosed string at line {i+1}: {line.rstrip()}')