c8c82f09a2
Added a new Verifier object to check for and fix spacing between if/while/for and following paren. Restructured Verifier class to make it easier to add new subclasses, particularly by using a global list of verifiers to auto-generate command line options and simplify the invocation loop.
749 lines
24 KiB
Python
749 lines
24 KiB
Python
#! /usr/bin/env python
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# Copyright (c) 2014 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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import heapq
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import os
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import re
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import sys
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from os.path import dirname, join as joinpath
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from itertools import count
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from mercurial import bdiff, mdiff, commands
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current_dir = dirname(__file__)
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sys.path.insert(0, current_dir)
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sys.path.insert(1, joinpath(dirname(current_dir), 'src', 'python'))
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from m5.util import neg_inf, pos_inf, Region, Regions
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import sort_includes
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from file_types import lang_type
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all_regions = Regions(Region(neg_inf, pos_inf))
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tabsize = 8
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lead = re.compile(r'^([ \t]+)')
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trail = re.compile(r'([ \t]+)$')
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any_control = re.compile(r'\b(if|while|for)([ \t]*)\(')
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format_types = set(('C', 'C++'))
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def re_ignore(expr):
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"""Helper function to create regular expression ignore file
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matcher functions"""
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rex = re.compile(expr)
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def match_re(fname):
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return rex.match(fname)
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return match_re
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# This list contains a list of functions that are called to determine
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# if a file should be excluded from the style matching rules or
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# not. The functions are called with the file name relative to the
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# repository root (without a leading slash) as their argument. A file
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# is excluded if any function in the list returns true.
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style_ignores = [
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# Ignore external projects as they are unlikely to follow the gem5
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# coding convention.
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re_ignore("^ext/"),
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]
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def check_ignores(fname):
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"""Check if a file name matches any of the ignore rules"""
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for rule in style_ignores:
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if rule(fname):
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return True
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return False
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def modified_regions(old_data, new_data):
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regions = Regions()
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beg = None
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for pbeg, pend, fbeg, fend in bdiff.blocks(old_data, new_data):
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if beg is not None and beg != fbeg:
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regions.append(beg, fbeg)
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beg = fend
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return regions
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def modregions(wctx, fname):
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fctx = wctx.filectx(fname)
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pctx = fctx.parents()
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file_data = fctx.data()
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lines = mdiff.splitnewlines(file_data)
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if len(pctx) in (1, 2):
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mod_regions = modified_regions(pctx[0].data(), file_data)
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if len(pctx) == 2:
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m2 = modified_regions(pctx[1].data(), file_data)
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# only the lines that are new in both
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mod_regions &= m2
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else:
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mod_regions = Regions()
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mod_regions.append(0, len(lines))
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return mod_regions
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class UserInterface(object):
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def __init__(self, verbose=False):
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self.verbose = verbose
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def prompt(self, prompt, results, default):
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while True:
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result = self.do_prompt(prompt, results, default)
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if result in results:
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return result
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class MercurialUI(UserInterface):
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def __init__(self, ui, *args, **kwargs):
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super(MercurialUI, self).__init__(*args, **kwargs)
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self.ui = ui
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def do_prompt(self, prompt, results, default):
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return self.ui.prompt(prompt, default=default)
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def write(self, string):
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self.ui.write(string)
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class StdioUI(UserInterface):
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def do_prompt(self, prompt, results, default):
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return raw_input(prompt) or default
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def write(self, string):
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sys.stdout.write(string)
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class Verifier(object):
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"""Base class for style verifier objects
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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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def __init__(self, ui, repo, opts):
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self.ui = ui
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self.repo = repo
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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 __getattr__(self, attr):
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if attr in ('prompt', 'write'):
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return getattr(self.ui, attr)
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if attr == 'wctx':
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try:
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wctx = repo.workingctx()
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except:
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from mercurial import context
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wctx = context.workingctx(repo)
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self.wctx = wctx
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return wctx
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raise AttributeError
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def open(self, filename, mode):
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filename = self.repo.wjoin(filename)
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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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filename = self.repo.wjoin(filename)
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# We never want to handle symlinks, so always skip them: If the location
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# pointed to is a directory, skip it. If the location is a file inside
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# the gem5 directory, it will be checked as a file, so symlink can be
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# skipped. If the location is a file outside gem5, we don't want to
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# check it anyway.
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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 check(self, filename, regions=all_regions):
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"""Check specified regions of file 'filename'.
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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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f = self.open(filename, 'r')
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errors = 0
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for num,line in enumerate(f):
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if num not in regions:
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continue
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if not self.check_line(line):
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self.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.write(">>%s<<\n" % line[:-1])
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errors += 1
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return errors
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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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f = self.open(filename, 'r+')
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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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if i in regions:
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line = self.fix_line(line)
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f.write(line)
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f.close()
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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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class Whitespace(Verifier):
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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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languages = set(('C', 'C++', 'swig', 'python', 'asm', 'isa', 'scons'))
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test_name = 'whitespace'
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opt_name = 'white'
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def check_line(self, line):
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match = 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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match = 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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def fix_line(self, line):
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if lead.search(line):
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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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newline += ' ' * (tabsize - len(newline) % tabsize)
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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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return line.rstrip() + '\n'
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class ControlSpace(Verifier):
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"""Check for exactly one space after if/while/for"""
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languages = set(('C', 'C++'))
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test_name = 'spacing after if/while/for'
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opt_name = 'control'
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def check_line(self, line):
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match = any_control.search(line)
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return not (match and match.group(2) != " ")
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def fix_line(self, line):
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new_line = any_control.sub(r'\1 (', line)
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return new_line
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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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def check(self, filename, regions=all_regions):
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f = self.open(filename, 'r')
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lines = [ l.rstrip('\n') for l in f.xreadlines() ]
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old = ''.join(line + '\n' for line in lines)
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f.close()
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if len(lines) == 0:
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return 0
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language = lang_type(filename, lines[0])
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sort_lines = list(self.sort_includes(lines, filename, language))
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new = ''.join(line + '\n' for line in sort_lines)
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mod = modified_regions(old, new)
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modified = mod & regions
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if modified:
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self.write("invalid sorting of includes in %s\n" % (filename))
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if self.ui.verbose:
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for start, end in modified.regions:
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self.write("bad region [%d, %d)\n" % (start, end))
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return 1
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return 0
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def fix(self, filename, regions=all_regions):
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f = self.open(filename, 'r+')
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old = f.readlines()
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lines = [ l.rstrip('\n') for l in old ]
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language = lang_type(filename, lines[0])
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sort_lines = list(self.sort_includes(lines, filename, language))
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new = ''.join(line + '\n' for line in sort_lines)
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f.seek(0)
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f.truncate()
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for i,line in enumerate(sort_lines):
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f.write(line)
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f.write('\n')
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f.close()
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# list of all verifier classes
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all_verifiers = [
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Whitespace,
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ControlSpace,
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SortedIncludes
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]
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def linelen(line):
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tabs = line.count('\t')
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if not tabs:
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return len(line)
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count = 0
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for c in line:
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if c == '\t':
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count += tabsize - count % tabsize
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else:
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count += 1
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return count
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class ValidationStats(object):
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def __init__(self):
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self.toolong = 0
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self.toolong80 = 0
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self.leadtabs = 0
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self.trailwhite = 0
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self.badcontrol = 0
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self.cret = 0
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def dump(self):
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print '''\
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%d violations of lines over 79 chars. %d of which are 80 chars exactly.
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%d cases of whitespace at the end of a line.
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%d cases of tabs to indent.
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%d bad parens after if/while/for.
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%d carriage returns found.
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''' % (self.toolong, self.toolong80, self.trailwhite, self.leadtabs,
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self.badcontrol, self.cret)
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def __nonzero__(self):
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return self.toolong or self.toolong80 or self.leadtabs or \
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self.trailwhite or self.badcontrol or self.cret
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def validate(filename, stats, verbose, exit_code):
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lang = lang_type(filename)
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if lang not in format_types:
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return
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def msg(lineno, line, message):
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print '%s:%d>' % (filename, lineno + 1), message
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if verbose > 2:
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print line
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def bad():
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if exit_code is not None:
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sys.exit(exit_code)
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try:
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f = file(filename, 'r')
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except OSError:
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if verbose > 0:
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print 'could not open file %s' % filename
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bad()
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return
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for i,line in enumerate(f):
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line = line.rstrip('\n')
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# no carriage returns
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if line.find('\r') != -1:
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self.cret += 1
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if verbose > 1:
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msg(i, line, 'carriage return found')
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bad()
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# lines max out at 79 chars
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llen = linelen(line)
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if llen > 79:
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stats.toolong += 1
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if llen == 80:
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stats.toolong80 += 1
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if verbose > 1:
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msg(i, line, 'line too long (%d chars)' % llen)
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bad()
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# no tabs used to indent
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match = lead.search(line)
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if match and match.group(1).find('\t') != -1:
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stats.leadtabs += 1
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if verbose > 1:
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msg(i, line, 'using tabs to indent')
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bad()
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# no trailing whitespace
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if trail.search(line):
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stats.trailwhite +=1
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if verbose > 1:
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msg(i, line, 'trailing whitespace')
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bad()
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# for c++, exactly one space betwen if/while/for and (
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if lang == 'C++':
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match = any_control.search(line)
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if match and match.group(2) != " ":
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stats.badcontrol += 1
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if verbose > 1:
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msg(i, line, 'improper spacing after %s' % match.group(1))
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bad()
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def _modified_regions(repo, patterns, **kwargs):
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opt_all = kwargs.get('all', False)
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opt_no_ignore = kwargs.get('no_ignore', False)
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|
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# Import the match (repository file name matching helper)
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|
# function. Different versions of Mercurial keep it in different
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# modules and implement them differently.
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|
try:
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from mercurial import scmutil
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m = scmutil.match(repo[None], patterns, kwargs)
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except ImportError:
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from mercurial import cmdutil
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|
m = cmdutil.match(repo, patterns, kwargs)
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|
modified, added, removed, deleted, unknown, ignore, clean = \
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repo.status(match=m, clean=opt_all)
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|
|
if not opt_all:
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|
try:
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wctx = repo.workingctx()
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|
except:
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|
from mercurial import context
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wctx = context.workingctx(repo)
|
|
|
|
files = [ (fn, all_regions) for fn in added ] + \
|
|
[ (fn, modregions(wctx, fn)) for fn in modified ]
|
|
else:
|
|
files = [ (fn, all_regions) for fn in added + modified + clean ]
|
|
|
|
for fname, mod_regions in files:
|
|
if opt_no_ignore or not check_ignores(fname):
|
|
yield fname, mod_regions
|
|
|
|
|
|
def do_check_style(hgui, repo, *pats, **opts):
|
|
"""check files for proper m5 style guidelines
|
|
|
|
Without an argument, checks all modified and added files for gem5
|
|
coding style violations. A list of files can be specified to limit
|
|
the checker to a subset of the repository. The style rules are
|
|
normally applied on a diff of the repository state (i.e., added
|
|
files are checked in their entirety while only modifications of
|
|
modified files are checked).
|
|
|
|
The --all option can be specified to include clean files and check
|
|
modified files in their entirety.
|
|
|
|
The --fix-<check>, --ignore-<check>, and --skip-<check> options
|
|
can be used to control individual style checks:
|
|
|
|
--fix-<check> will perform the check and automatically attempt to
|
|
fix sny style error (printing a warning if unsuccessful)
|
|
|
|
--ignore-<check> will perform the check but ignore any errors
|
|
found (other than printing a message for each)
|
|
|
|
--skip-<check> will skip performing the check entirely
|
|
|
|
If none of these options are given, all checks will be performed
|
|
and the user will be prompted on how to handle each error.
|
|
|
|
--fix-all, --ignore-all, and --skip-all are equivalent to specifying
|
|
--fix-<check>, --ignore-<check>, or --skip-<check> for all checks,
|
|
respectively. However, option settings for specific checks take
|
|
precedence. Thus --skip-all --fix-white can be used to skip every
|
|
check other than whitespace errors, which will be checked and
|
|
automatically fixed.
|
|
|
|
The -v/--verbose flag will display the offending line(s) as well
|
|
as their location.
|
|
"""
|
|
|
|
ui = MercurialUI(hgui, verbose=hgui.verbose)
|
|
|
|
# instantiate varifier objects
|
|
verifiers = [v(ui, repo, opts) for v in all_verifiers]
|
|
|
|
for fname, mod_regions in _modified_regions(repo, pats, **opts):
|
|
for verifier in verifiers:
|
|
if verifier.apply(fname, mod_regions):
|
|
return True
|
|
|
|
return False
|
|
|
|
def do_check_format(hgui, repo, *pats, **opts):
|
|
"""check files for gem5 code formatting violations
|
|
|
|
Without an argument, checks all modified and added files for gem5
|
|
code formatting violations. A list of files can be specified to
|
|
limit the checker to a subset of the repository. The style rules
|
|
are normally applied on a diff of the repository state (i.e.,
|
|
added files are checked in their entirety while only modifications
|
|
of modified files are checked).
|
|
|
|
The --all option can be specified to include clean files and check
|
|
modified files in their entirety.
|
|
"""
|
|
ui = MercurialUI(hgui, hgui.verbose)
|
|
|
|
verbose = 0
|
|
for fname, mod_regions in _modified_regions(repo, pats, **opts):
|
|
stats = ValidationStats()
|
|
validate(joinpath(repo.root, fname), stats, verbose, None)
|
|
if stats:
|
|
print "%s:" % fname
|
|
stats.dump()
|
|
result = ui.prompt("invalid formatting\n(i)gnore or (a)bort?",
|
|
'ai', 'a')
|
|
if result == 'a':
|
|
return True
|
|
|
|
return False
|
|
|
|
def check_hook(hooktype):
|
|
if hooktype not in ('pretxncommit', 'pre-qrefresh'):
|
|
raise AttributeError, \
|
|
"This hook is not meant for %s" % hooktype
|
|
|
|
# This function provides a hook that is called before transaction
|
|
# commit and on qrefresh
|
|
def check_style(ui, repo, hooktype, **kwargs):
|
|
check_hook(hooktype)
|
|
args = {}
|
|
|
|
try:
|
|
return do_check_style(ui, repo, **args)
|
|
except Exception, e:
|
|
import traceback
|
|
traceback.print_exc()
|
|
return True
|
|
|
|
def check_format(ui, repo, hooktype, **kwargs):
|
|
check_hook(hooktype)
|
|
args = {}
|
|
|
|
try:
|
|
return do_check_format(ui, repo, **args)
|
|
except Exception, e:
|
|
import traceback
|
|
traceback.print_exc()
|
|
return True
|
|
|
|
try:
|
|
from mercurial.i18n import _
|
|
except ImportError:
|
|
def _(arg):
|
|
return arg
|
|
|
|
_common_region_options = [
|
|
('a', 'all', False,
|
|
_("include clean files and unmodified parts of modified files")),
|
|
('', 'no-ignore', False, _("ignore the style ignore list")),
|
|
]
|
|
|
|
|
|
fix_opts = [('f', 'fix-all', False, _("fix all style errors"))] + \
|
|
[('', 'fix-' + v.opt_name, False,
|
|
_('fix errors in ' + v.test_name)) for v in all_verifiers]
|
|
ignore_opts = [('', 'ignore-all', False, _("ignore all style errors"))] + \
|
|
[('', 'ignore-' + v.opt_name, False,
|
|
_('ignore errors in ' + v.test_name)) for v in all_verifiers]
|
|
skip_opts = [('', 'skip-all', False, _("skip all style error checks"))] + \
|
|
[('', 'skip-' + v.opt_name, False,
|
|
_('skip checking for ' + v.test_name)) for v in all_verifiers]
|
|
all_opts = fix_opts + ignore_opts + skip_opts
|
|
|
|
|
|
cmdtable = {
|
|
'^m5style' : (
|
|
do_check_style, all_opts + _common_region_options + commands.walkopts,
|
|
_('hg m5style [-a] [FILE]...')),
|
|
'^m5format' :
|
|
( do_check_format, [
|
|
] + _common_region_options + commands.walkopts,
|
|
_('hg m5format [FILE]...')),
|
|
}
|
|
|
|
if __name__ == '__main__':
|
|
import getopt
|
|
|
|
progname = sys.argv[0]
|
|
if len(sys.argv) < 2:
|
|
sys.exit('usage: %s <command> [<command args>]' % progname)
|
|
|
|
fixwhite_usage = '%s fixwhite [-t <tabsize> ] <path> [...] \n' % progname
|
|
chkformat_usage = '%s chkformat <path> [...] \n' % progname
|
|
chkwhite_usage = '%s chkwhite <path> [...] \n' % progname
|
|
|
|
command = sys.argv[1]
|
|
if command == 'fixwhite':
|
|
flags = 't:'
|
|
usage = fixwhite_usage
|
|
elif command == 'chkwhite':
|
|
flags = 'nv'
|
|
usage = chkwhite_usage
|
|
elif command == 'chkformat':
|
|
flags = 'nv'
|
|
usage = chkformat_usage
|
|
else:
|
|
sys.exit(fixwhite_usage + chkwhite_usage + chkformat_usage)
|
|
|
|
opts, args = getopt.getopt(sys.argv[2:], flags)
|
|
|
|
code = 1
|
|
verbose = 1
|
|
for opt,arg in opts:
|
|
if opt == '-n':
|
|
code = None
|
|
if opt == '-t':
|
|
tabsize = int(arg)
|
|
if opt == '-v':
|
|
verbose += 1
|
|
|
|
if command == 'fixwhite':
|
|
for filename in args:
|
|
fixwhite(filename, tabsize)
|
|
elif command == 'chkwhite':
|
|
for filename in args:
|
|
for line,num in checkwhite(filename):
|
|
print 'invalid whitespace: %s:%d' % (filename, num)
|
|
if verbose:
|
|
print '>>%s<<' % line[:-1]
|
|
elif command == 'chkformat':
|
|
stats = ValidationStats()
|
|
for filename in args:
|
|
validate(filename, stats=stats, verbose=verbose, exit_code=code)
|
|
|
|
if verbose > 0:
|
|
stats.dump()
|
|
else:
|
|
sys.exit("command '%s' not found" % command)
|