2016-03-30 16:30:32 +02:00
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#!/usr/bin/env python
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#
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# Copyright (c) 2014, 2016 ARM Limited
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# All rights reserved
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Copyright (c) 2006 The Regents of The University of Michigan
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# Copyright (c) 2007,2011 The Hewlett-Packard Development Company
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# Copyright (c) 2016 Advanced Micro Devices, Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Nathan Binkert
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# Steve Reinhardt
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# Andreas Sandberg
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from abc import ABCMeta, abstractmethod
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from difflib import SequenceMatcher
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import inspect
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import os
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import re
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import sys
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import style
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import sort_includes
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from region import *
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from file_types import lang_type
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2016-08-03 18:10:46 +02:00
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def safefix(fix_func):
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""" Decorator for the fix functions of the Verifier class.
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This function wraps the fix function and creates a backup file
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just in case there is an error.
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"""
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def safefix_wrapper(*args, **kwargs):
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# Check to be sure that this is decorating a function we expect:
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# a class method with filename as the first argument (after self)
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assert(os.path.exists(args[1]))
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self = args[0]
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assert(is_verifier(self.__class__))
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filename = args[1]
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# Now, Let's make a backup file.
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from shutil import copyfile
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backup_name = filename+'.bak'
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copyfile(filename, backup_name)
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# Try to apply the fix. If it fails, then we revert the file
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# Either way, we need to clean up our backup file
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try:
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fix_func(*args, **kwargs)
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except Exception as e:
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# Restore the original file to the backup file
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self.ui.write("Error! Restoring the original file.\n")
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copyfile(backup_name, filename)
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raise
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finally:
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# Clean up the backup file
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os.remove(backup_name)
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return safefix_wrapper
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2016-03-30 16:30:32 +02:00
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def _modified_regions(old, new):
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2016-04-18 11:31:38 +02:00
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try:
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m = SequenceMatcher(a=old, b=new, autojunk=False)
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except TypeError:
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# autojunk was introduced in Python 2.7. We need a fallback
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# mechanism to support old Python versions.
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m = SequenceMatcher(a=old, b=new)
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2016-03-30 16:30:32 +02:00
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regions = Regions()
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for tag, i1, i2, j1, j2 in m.get_opcodes():
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if tag != "equal":
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regions.extend(Region(i1, i2))
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return regions
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class Verifier(object):
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"""Base class for style verifiers
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Verifiers check for style violations and optionally fix such
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violations. Implementations should either inherit from this class
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(Verifier) if they need to work on entire files or LineVerifier if
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they operate on a line-by-line basis.
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Subclasses must define these class attributes:
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languages = set of strings identifying applicable languages
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test_name = long descriptive name of test, will be used in
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messages such as "error in <foo>" or "invalid <foo>"
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opt_name = short name used to generate command-line options to
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control the test (--fix-<foo>, --ignore-<foo>, etc.)
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"""
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__metaclass__ = ABCMeta
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def __init__(self, ui, opts, base=None):
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self.ui = ui
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self.base = base
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# opt_name must be defined as a class attribute of derived classes.
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# Check test-specific opts first as these have precedence.
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self.opt_fix = opts.get('fix_' + self.opt_name, False)
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self.opt_ignore = opts.get('ignore_' + self.opt_name, False)
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self.opt_skip = opts.get('skip_' + self.opt_name, False)
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# If no test-specific opts were set, then set based on "-all" opts.
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if not (self.opt_fix or self.opt_ignore or self.opt_skip):
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self.opt_fix = opts.get('fix_all', False)
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self.opt_ignore = opts.get('ignore_all', False)
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self.opt_skip = opts.get('skip_all', False)
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def normalize_filename(self, name):
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abs_name = os.path.abspath(name)
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if self.base is None:
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return abs_name
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abs_base = os.path.abspath(self.base)
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return os.path.relpath(abs_name, start=abs_base)
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def open(self, filename, mode):
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try:
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f = file(filename, mode)
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except OSError, msg:
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print 'could not open file %s: %s' % (filename, msg)
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return None
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return f
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def skip(self, filename):
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2016-08-03 18:10:46 +02:00
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# We never want to handle symlinks, so always skip them: If the
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# location pointed to is a directory, skip it. If the location is a
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# file inside the gem5 directory, it will be checked as a file, so
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# symlink can be skipped. If the location is a file outside gem5, we
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# don't want to check it anyway.
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2016-03-30 16:30:32 +02:00
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if os.path.islink(filename):
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return True
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return lang_type(filename) not in self.languages
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def apply(self, filename, regions=all_regions):
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"""Possibly apply to specified regions of file 'filename'.
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Verifier is skipped if --skip-<test> option was provided or if
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file is not of an applicable type. Otherwise file is checked
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and error messages printed. Errors are fixed or ignored if
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the corresponding --fix-<test> or --ignore-<test> options were
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provided. If neither, the user is prompted for an action.
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Returns True to abort, False otherwise.
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"""
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if not (self.opt_skip or self.skip(filename)):
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errors = self.check(filename, regions)
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if errors and not self.opt_ignore:
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if self.opt_fix:
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self.fix(filename, regions)
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else:
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result = self.ui.prompt("(a)bort, (i)gnore, or (f)ix?",
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'aif', 'a')
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if result == 'f':
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self.fix(filename, regions)
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elif result == 'a':
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return True # abort
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return False
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@abstractmethod
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2016-11-25 11:31:21 +01:00
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def check(self, filename, regions=all_regions, fobj=None, silent=False):
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2016-03-30 16:30:32 +02:00
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"""Check specified regions of file 'filename'.
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2016-11-25 11:31:21 +01:00
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Given that it is possible that the current contents of the file
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differ from the file as 'staged to commit', for those cases, and
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maybe others, the argument fobj should be a file object open and reset
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with the contents matching what the file would look like after the
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commit. This is needed keep the messages using 'filename' meaningful.
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The argument silent is useful to prevent output when we run check in
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the staged file vs the actual file to detect if the user forgot
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staging fixes to the commit. This way, we prevent reporting errors
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twice in stderr.
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2016-03-30 16:30:32 +02:00
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Line-by-line checks can simply provide a check_line() method
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that returns True if the line is OK and False if it has an
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error. Verifiers that need a multi-line view (like
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SortedIncludes) must override this entire function.
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Returns a count of errors (0 if none), though actual non-zero
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count value is not currently used anywhere.
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"""
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pass
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@abstractmethod
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def fix(self, filename, regions=all_regions):
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"""Fix specified regions of file 'filename'.
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Line-by-line fixes can simply provide a fix_line() method that
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returns the fixed line. Verifiers that need a multi-line view
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(like SortedIncludes) must override this entire function.
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"""
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pass
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class LineVerifier(Verifier):
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2016-11-25 11:31:21 +01:00
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def check(self, filename, regions=all_regions, fobj=None, silent=False):
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close = False
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if fobj is None:
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fobj = self.open(filename, 'r')
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close = True
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2016-03-30 16:30:32 +02:00
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2016-06-20 15:49:52 +02:00
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lang = lang_type(filename)
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assert lang in self.languages
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2016-03-30 16:30:32 +02:00
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errors = 0
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2016-11-25 11:31:21 +01:00
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for num,line in enumerate(fobj):
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2016-03-30 16:30:32 +02:00
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if num not in regions:
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continue
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line = line.rstrip('\n')
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2016-06-20 15:49:52 +02:00
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if not self.check_line(line, language=lang):
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2016-11-25 11:31:21 +01:00
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if not silent:
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self.ui.write("invalid %s in %s:%d\n" % \
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(self.test_name, filename, num + 1))
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if self.ui.verbose:
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self.ui.write(">>%s<<\n" % line[:-1])
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2016-03-30 16:30:32 +02:00
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errors += 1
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2016-11-25 11:31:21 +01:00
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if close:
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fobj.close()
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2016-03-30 16:30:32 +02:00
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return errors
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2016-08-03 18:10:46 +02:00
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@safefix
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2016-03-30 16:30:32 +02:00
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def fix(self, filename, regions=all_regions):
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f = self.open(filename, 'r+')
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2016-06-20 15:49:52 +02:00
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lang = lang_type(filename)
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assert lang in self.languages
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2016-03-30 16:30:32 +02:00
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lines = list(f)
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f.seek(0)
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f.truncate()
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for i,line in enumerate(lines):
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line = line.rstrip('\n')
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if i in regions:
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2016-06-20 15:49:52 +02:00
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line = self.fix_line(line, language=lang)
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2016-03-30 16:30:32 +02:00
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f.write(line)
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f.write("\n")
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f.close()
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2016-06-20 15:49:52 +02:00
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self.current_language = None
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2016-03-30 16:30:32 +02:00
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@abstractmethod
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2016-06-20 15:49:52 +02:00
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def check_line(self, line, **kwargs):
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pass
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@abstractmethod
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2016-06-20 15:49:52 +02:00
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def fix_line(self, line, **kwargs):
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2016-03-30 16:30:32 +02:00
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pass
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class Whitespace(LineVerifier):
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"""Check whitespace.
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Specifically:
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- No tabs used for indent
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- No trailing whitespace
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"""
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2016-06-20 15:49:52 +02:00
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languages = set(('C', 'C++', 'swig', 'python', 'asm', 'isa', 'scons',
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'make', 'dts'))
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trail_only = set(('make', 'dts'))
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2016-03-30 16:30:32 +02:00
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test_name = 'whitespace'
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opt_name = 'white'
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_lead = re.compile(r'^([ \t]+)')
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_trail = re.compile(r'([ \t]+)$')
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2016-06-20 15:49:52 +02:00
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def skip_lead(self, language):
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return language in Whitespace.trail_only
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def check_line(self, line, language):
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if not self.skip_lead(language):
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match = Whitespace._lead.search(line)
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if match and match.group(1).find('\t') != -1:
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return False
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2016-03-30 16:30:32 +02:00
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match = Whitespace._trail.search(line)
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if match:
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return False
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return True
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2016-06-20 15:49:52 +02:00
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def fix_line(self, line, language):
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if not self.skip_lead(language) and Whitespace._lead.search(line):
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2016-03-30 16:30:32 +02:00
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newline = ''
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for i,c in enumerate(line):
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if c == ' ':
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newline += ' '
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elif c == '\t':
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2016-07-01 16:35:52 +02:00
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newline += ' ' * (style.tabsize - \
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len(newline) % style.tabsize)
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2016-03-30 16:30:32 +02:00
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else:
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newline += line[i:]
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break
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line = newline
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2016-06-02 11:48:20 +02:00
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return line.rstrip()
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2016-03-30 16:30:32 +02:00
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class SortedIncludes(Verifier):
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"""Check for proper sorting of include statements"""
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languages = sort_includes.default_languages
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test_name = 'include file order'
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opt_name = 'include'
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def __init__(self, *args, **kwargs):
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super(SortedIncludes, self).__init__(*args, **kwargs)
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self.sort_includes = sort_includes.SortIncludes()
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2016-11-25 11:31:21 +01:00
|
|
|
def check(self, filename, regions=all_regions, fobj=None, silent=False):
|
|
|
|
close = False
|
|
|
|
if fobj is None:
|
|
|
|
fobj = self.open(filename, 'r')
|
|
|
|
close = True
|
2016-03-30 16:30:32 +02:00
|
|
|
norm_fname = self.normalize_filename(filename)
|
|
|
|
|
2016-11-25 11:31:21 +01:00
|
|
|
old = [ l.rstrip('\n') for l in fobj.xreadlines() ]
|
|
|
|
if close:
|
|
|
|
fobj.close()
|
2016-03-30 16:30:32 +02:00
|
|
|
|
|
|
|
if len(old) == 0:
|
|
|
|
return 0
|
|
|
|
|
|
|
|
language = lang_type(filename, old[0])
|
|
|
|
new = list(self.sort_includes(old, norm_fname, language))
|
|
|
|
|
|
|
|
modified = _modified_regions(old, new) & regions
|
|
|
|
|
|
|
|
if modified:
|
2016-11-25 11:31:21 +01:00
|
|
|
if not silent:
|
|
|
|
self.ui.write("invalid sorting of includes in %s\n"
|
|
|
|
% (filename))
|
|
|
|
if self.ui.verbose:
|
|
|
|
for start, end in modified.regions:
|
|
|
|
self.ui.write("bad region [%d, %d)\n" % (start, end))
|
2016-03-30 16:30:32 +02:00
|
|
|
return 1
|
|
|
|
|
|
|
|
return 0
|
|
|
|
|
2016-08-03 18:10:46 +02:00
|
|
|
@safefix
|
2016-03-30 16:30:32 +02:00
|
|
|
def fix(self, filename, regions=all_regions):
|
|
|
|
f = self.open(filename, 'r+')
|
|
|
|
|
|
|
|
old = f.readlines()
|
|
|
|
lines = [ l.rstrip('\n') for l in old ]
|
|
|
|
language = lang_type(filename, lines[0])
|
|
|
|
sort_lines = list(self.sort_includes(lines, filename, language))
|
|
|
|
new = ''.join(line + '\n' for line in sort_lines)
|
|
|
|
|
|
|
|
f.seek(0)
|
|
|
|
f.truncate()
|
|
|
|
|
|
|
|
for i,line in enumerate(sort_lines):
|
|
|
|
f.write(line)
|
|
|
|
f.write('\n')
|
|
|
|
f.close()
|
|
|
|
|
|
|
|
|
|
|
|
class ControlSpace(LineVerifier):
|
|
|
|
"""Check for exactly one space after if/while/for"""
|
|
|
|
|
|
|
|
languages = set(('C', 'C++'))
|
|
|
|
test_name = 'spacing after if/while/for'
|
|
|
|
opt_name = 'control'
|
|
|
|
|
|
|
|
_any_control = re.compile(r'\b(if|while|for)([ \t]*)\(')
|
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def check_line(self, line, **kwargs):
|
2016-03-30 16:30:32 +02:00
|
|
|
match = ControlSpace._any_control.search(line)
|
|
|
|
return not (match and match.group(2) != " ")
|
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def fix_line(self, line, **kwargs):
|
2016-07-01 16:35:52 +02:00
|
|
|
new_line = ControlSpace._any_control.sub(r'\1 (', line)
|
2016-03-30 16:30:32 +02:00
|
|
|
return new_line
|
|
|
|
|
|
|
|
|
|
|
|
class LineLength(LineVerifier):
|
|
|
|
languages = set(('C', 'C++', 'swig', 'python', 'asm', 'isa', 'scons'))
|
|
|
|
test_name = 'line length'
|
|
|
|
opt_name = 'length'
|
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def check_line(self, line, **kwargs):
|
2016-03-30 16:36:50 +02:00
|
|
|
return style.normalized_len(line) <= 79
|
2016-03-30 16:30:32 +02:00
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def fix(self, filename, regions=all_regions, **kwargs):
|
2016-03-30 16:30:32 +02:00
|
|
|
self.ui.write("Warning: cannot automatically fix overly long lines.\n")
|
|
|
|
|
|
|
|
def fix_line(self, line):
|
|
|
|
pass
|
|
|
|
|
2016-03-30 16:31:23 +02:00
|
|
|
class ControlCharacters(LineVerifier):
|
|
|
|
languages = set(('C', 'C++', 'swig', 'python', 'asm', 'isa', 'scons'))
|
|
|
|
test_name = 'control character'
|
|
|
|
opt_name = 'ascii'
|
|
|
|
|
|
|
|
valid = ('\n', '\t')
|
|
|
|
invalid = "".join([chr(i) for i in range(0, 0x20) if chr(i) not in valid])
|
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def check_line(self, line, **kwargs):
|
2016-03-30 16:31:23 +02:00
|
|
|
return self.fix_line(line) == line
|
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def fix_line(self, line, **kwargs):
|
2016-03-30 16:31:23 +02:00
|
|
|
return line.translate(None, ControlCharacters.invalid)
|
|
|
|
|
2016-03-30 16:30:32 +02:00
|
|
|
class BoolCompare(LineVerifier):
|
|
|
|
languages = set(('C', 'C++', 'python'))
|
|
|
|
test_name = 'boolean comparison'
|
|
|
|
opt_name = 'boolcomp'
|
|
|
|
|
|
|
|
regex = re.compile(r'\s*==\s*([Tt]rue|[Ff]alse)\b')
|
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def check_line(self, line, **kwargs):
|
2016-03-30 16:30:32 +02:00
|
|
|
return self.regex.search(line) == None
|
|
|
|
|
2016-06-20 15:49:52 +02:00
|
|
|
def fix_line(self, line, **kwargs):
|
2016-03-30 16:30:32 +02:00
|
|
|
match = self.regex.search(line)
|
|
|
|
if match:
|
|
|
|
if match.group(1) in ('true', 'True'):
|
|
|
|
line = self.regex.sub('', line)
|
|
|
|
else:
|
|
|
|
self.ui.write("Warning: cannot automatically fix "
|
|
|
|
"comparisons with false/False.\n")
|
|
|
|
return line
|
|
|
|
|
|
|
|
def is_verifier(cls):
|
|
|
|
"""Determine if a class is a Verifier that can be instantiated"""
|
|
|
|
|
|
|
|
return inspect.isclass(cls) and issubclass(cls, Verifier) and \
|
|
|
|
not inspect.isabstract(cls)
|
|
|
|
|
|
|
|
# list of all verifier classes
|
|
|
|
all_verifiers = [ v for n, v in \
|
|
|
|
inspect.getmembers(sys.modules[__name__], is_verifier) ]
|