config/printconfigsetting.py
author Iain Ireland <iireland@mozilla.com>
Fri, 11 Jan 2019 18:05:36 +0000
changeset 453523 025feea5945bffc625e9cca2e23be51ee8670315
parent 419599 da3c81f986fa63b42a2874b1791eddcdbfbe8424
permissions -rw-r--r--
Bug 1480390: Move ForOfIterClose logic inside TryNoteIter r=tcampbell This patch was intended to be a pure refactoring of existing code with no side-effects, moving the logic for handling for-of/for-of-iterclose trynotes inside TryNoteIter to avoid duplicating logic in all users of TryNoteIter. However, it turns out that there was a subtle preexisting bug in TryNoteIter that is fixed by the refactoring. Specifically, the logic to skip from a for-of-iterclose to its enclosing for-of must run before the logic to skip trynotes based on stack depth. Otherwise, the stack depth code may filter out the enclosing for-of (see the attached test case for an example) and we will skip too many try-notes. Differential Revision: https://phabricator.services.mozilla.com/D14783

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import configobj
import sys
import re
from StringIO import StringIO

try:
    (file, section, key) = sys.argv[1:]
except ValueError:
    print("Usage: printconfigsetting.py <file> <section> <setting>")
    sys.exit(1)

with open(file) as fh:
    content = re.sub('^\s*;', '#', fh.read(), flags=re.M)

c = configobj.ConfigObj(StringIO(content))

try:
    s = c[section]
except KeyError:
    print >>sys.stderr, "Section [%s] not found." % section
    sys.exit(1)

try:
    print(s[key])
except KeyError:
    print >>sys.stderr, "Key %s not found." % key
    sys.exit(1)