1# Copyright (C) 2011 Apple Inc. All rights reserved. 2# 3# Redistribution and use in source and binary forms, with or without 4# modification, are permitted provided that the following conditions 5# are met: 6# 1. Redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer. 8# 2. Redistributions in binary form must reproduce the above copyright 9# notice, this list of conditions and the following disclaimer in the 10# documentation and/or other materials provided with the distribution. 11# 12# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND 13# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 14# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 15# DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR 16# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 18# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 19# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 20# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 21# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 22 23"""Checks WebKit style for JSON files.""" 24 25import json 26import re 27 28 29class JSONChecker(object): 30 """Processes JSON lines for checking style.""" 31 32 categories = set(('json/syntax',)) 33 34 def __init__(self, file_path, handle_style_error): 35 self._handle_style_error = handle_style_error 36 self._handle_style_error.turn_off_line_filtering() 37 38 def check(self, lines): 39 try: 40 json.loads('\n'.join(lines) + '\n') 41 except ValueError, e: 42 self._handle_style_error(self.line_number_from_json_exception(e), 'json/syntax', 5, str(e)) 43 44 @staticmethod 45 def line_number_from_json_exception(error): 46 match = re.search(r': line (?P<line>\d+) column \d+', str(error)) 47 if not match: 48 return 0 49 return int(match.group('line')) 50