text: #!/usr/bin/env python
  #
  # Copyright 2012 the V8 project authors. All rights reserved.
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are
  # met:
  #
  #     * Redistributions of source code must retain the above copyright
  #       notice, this list of conditions and the following disclaimer.
  #     * Redistributions in binary form must reproduce the above
  #       copyright notice, this list of conditions and the following
  #       disclaimer in the documentation and/or other materials provided
  #       with the distribution.
  #     * Neither the name of Google Inc. nor the names of its
  #       contributors may be used to endorse or promote products derived
  #       from this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  
  # for py2/py3 compatibility
  from __future__ import absolute_import
  from __future__ import print_function
  
  try:
    import hashlib
    md5er = hashlib.md5
  except ImportError as e:
    import md5
    md5er = md5.new
  
  
  import json
  import multiprocessing
  import optparse
  import os
  from os.path import abspath, join, dirname, basename, exists
  import pickle
  import re
  import subprocess
  from subprocess import PIPE
  import sys
  
  from testrunner.local import statusfile
  from testrunner.local import testsuite
  from testrunner.local import utils
  
  PYTHON3 = sys.version_info >= (3, 0)
  
  def maybe_decode(arg, encoding="utf-8"):
    return arg.decode(encoding) if PYTHON3 else arg
  
  def maybe_encode(arg, encoding="utf-8"):
    return arg.encode(encoding) if PYTHON3 else arg
  
  # Special LINT rules diverging from default and reason.
  # build/header_guard: Our guards have the form "V8_FOO_H_", not "SRC_FOO_H_".
  #   We now run our own header guard check in PRESUBMIT.py.
  # build/include_what_you_use: Started giving false positives for variables
  #   named "string" and "map" assuming that you needed to include STL headers.
  # runtime/references: As of May 2020 the C++ style guide suggests using
  #   references for out parameters, see
  #   https://google.github.io/styleguide/cppguide.html#Inputs_and_Outputs.
  # whitespace/braces: Doesn't handle {}-initialization for custom types
  #   well; also should be subsumed by clang-format.
  
  LINT_RULES = """
  -build/header_guard
  -build/include_what_you_use
  -readability/fn_size
  -readability/multiline_comment
  -runtime/references
  -whitespace/braces
  -whitespace/comments
  """.split()
  
  LINT_OUTPUT_PATTERN = re.compile(r'^.+[:(]\d+[:)]|^Done processing')
  FLAGS_LINE = re.compile("//\s*Flags:.*--([A-z0-9-])+_[A-z0-9].*\n")
  ASSERT_OPTIMIZED_PATTERN = re.compile("assertOptimized")
  FLAGS_ENABLE_OPT = re.compile("//\s*Flags:.*--opt[^-].*\n")
  ASSERT_UNOPTIMIZED_PATTERN = re.compile("assertUnoptimized")
  FLAGS_NO_ALWAYS_OPT = re.compile("//\s*Flags:.*--no-?always-opt.*\n")
  
  TOOLS_PATH = dirname(abspath(__file__))
  
  def CppLintWorker(command):
    try:
      process = subprocess.Popen(command, stderr=subprocess.PIPE)
      process.wait()
      out_lines = ""
      error_count = -1
      while True:
        out_line = maybe_decode(process.stderr.readline())
        if out_line == '' and process.poll() != None:
          if error_count == -1:
            print("Failed to process %s" % command.pop())
            return 1
          break
        m = LINT_OUTPUT_PATTERN.match(out_line)
        if m:
          out_lines += out_line
          error_count += 1
      sys.stdout.write(out_lines)
      return error_count
    except KeyboardInterrupt:
      process.kill()
    except:
      print('Error running cpplint.py. Please make sure you have depot_tools' +
            ' in your $PATH. Lint check skipped.')
      process.kill()
  
  def TorqueLintWorker(command):
    try:
      process = subprocess.Popen(command, stderr=subprocess.PIPE)
      process.wait()
      out_lines = ""
      error_count = 0
      while True:
        out_line = maybe_decode(process.stderr.readline())
        if out_line == '' and process.poll() != None:
          break
        out_lines += out_line
        error_count += 1
      sys.stdout.write(out_lines)
      if error_count != 0:
          sys.stdout.write(
            "warning: formatting and overwriting unformatted Torque files\n")
      return error_count
    except KeyboardInterrupt:
      process.kill()
    except:
      print('Error running format-torque.py')
      process.kill()
  
  def JSLintWorker(command):
    def format_file(command):
      try:
        file_name = command[-1]
        with open(file_name, "r") as file_handle:
          contents = file_handle.read()
  
        process = subprocess.Popen(command, stdout=PIPE, stderr=subprocess.PIPE)
        output, err = process.communicate()
        rc = process.returncode
        if rc != 0:
          sys.stdout.write("error code " + str(rc) + " running clang-format.\n")
          return rc
  
        if maybe_decode(output) != contents:
          return 1
  
        return 0
      except KeyboardInterrupt:
        process.kill()
      except Exception:
        print('Error running clang-format. Please make sure you have depot_tools' +
              ' in your $PATH. Lint check skipped.')
        process.kill()
  
    rc = format_file(command)
    if rc == 1:
      # There are files that need to be formatted, let's format them in place.
      file_name = command[-1]
      sys.stdout.write("Formatting %s.\n" % (file_name))
      rc = format_file(command[:-1] + ["-i", file_name])
    return rc
  
  class FileContentsCache(object):
  
    def __init__(self, sums_file_name):
      self.sums = {}
      self.sums_file_name = sums_file_name
  
    def Load(self):
      try:
        sums_file = None
        try:
          sums_file = open(self.sums_file_name, 'r')
          self.sums = pickle.load(sums_file)
        except:
          # Cannot parse pickle for any reason. Not much we can do about it.
          pass
      finally:
        if sums_file:
          sums_file.close()
  
    def Save(self):
      try:
        sums_file = open(self.sums_file_name, 'w')
        pickle.dump(self.sums, sums_file)
      except:
        # Failed to write pickle. Try to clean-up behind us.
        if sums_file:
          sums_file.close()
        try:
          os.unlink(self.sums_file_name)
        except:
          pass
      finally:
        sums_file.close()
  
    def FilterUnchangedFiles(self, files):
      changed_or_new = []
      for file in files:
        try:
          handle = open(file, "r")
          file_sum = md5er(maybe_encode(handle.read())).digest()
          if not file in self.sums or self.sums[file] != file_sum:
            changed_or_new.append(file)
            self.sums[file] = file_sum
        finally:
          handle.close()
      return changed_or_new
  
    def RemoveFile(self, file):
      if file in self.sums:
        self.sums.pop(file)
  
  
  class SourceFileProcessor(object):
    """
    Utility class that can run through a directory structure, find all relevant
    files and invoke a custom check on the files.
    """
  
    def RunOnPath(self, path):
      """Runs processor on all files under the given path."""
  
      all_files = []
      for file in self.GetPathsToSearch():
        all_files += self.FindFilesIn(join(path, file))
      return self.ProcessFiles(all_files)
  
    def RunOnFiles(self, files):
      """Runs processor only on affected files."""
  
      # Helper for getting directory pieces.
      dirs = lambda f: dirname(f).split(os.sep)
  
      # Path offsets where to look (to be in sync with RunOnPath).
      # Normalize '.' to check for it with str.startswith.
      search_paths = [('' if p == '.' else p) for p in self.GetPathsToSearch()]
  
      all_files = [
        f.AbsoluteLocalPath()
        for f in files
        if (not self.IgnoreFile(f.LocalPath()) and
            self.IsRelevant(f.LocalPath()) and
            all(not self.IgnoreDir(d) for d in dirs(f.LocalPath())) and
            any(map(f.LocalPath().startswith, search_paths)))
      ]
  
      return self.ProcessFiles(all_files)
  
    def IgnoreDir(self, name):
      return (name.startswith('.') or
              name in ('buildtools', 'data', 'gmock', 'gtest', 'kraken',
                       'octane', 'sunspider', 'traces-arm64'))
  
    def IgnoreFile(self, name):
      return name.startswith('.')
  
    def FindFilesIn(self, path):
      result = []
      for (root, dirs, files) in os.walk(path):
        for ignored in [x for x in dirs if self.IgnoreDir(x)]:
          dirs.remove(ignored)
        for file in files:
          if not self.IgnoreFile(file) and self.IsRelevant(file):
            result.append(join(root, file))
      return result
  
  
  class CacheableSourceFileProcessor(SourceFileProcessor):
    """Utility class that allows caching ProcessFiles() method calls.
  
    In order to use it, create a ProcessFilesWithoutCaching method that returns
    the files requiring intervention after processing the source files.
    """
  
    def __init__(self, use_cache, cache_file_path, file_type):
      self.use_cache = use_cache
      self.cache_file_path = cache_file_path
      self.file_type = file_type
  
    def GetProcessorWorker(self):
      """Expected to return the worker function to run the formatter."""
      raise NotImplementedError
  
    def GetProcessorScript(self):
      """Expected to return a tuple
      (path to the format processor script, list of arguments)."""
      raise NotImplementedError
  
    def GetProcessorCommand(self):
      format_processor, options = self.GetProcessorScript()
      if not format_processor:
        print('Could not find the formatter for % files' % self.file_type)
        sys.exit(1)
  
      command = [sys.executable, format_processor]
      command.extend(options)
  
      return command
  
    def ProcessFiles(self, files):
      if self.use_cache:
        cache = FileContentsCache(self.cache_file_path)
        cache.Load()
        files = cache.FilterUnchangedFiles(files)
  
      if len(files) == 0:
        print('No changes in %s files detected. Skipping check' % self.file_type)
        return True
  
      files_requiring_changes = self.DetectFilesToChange(files)
      print (
        'Total %s files found that require formatting: %d' %
        (self.file_type, len(files_requiring_changes)))
      if self.use_cache:
        for file in files_requiring_changes:
          cache.RemoveFile(file)
  
        cache.Save()
  
      return files_requiring_changes == []
  
    def DetectFilesToChange(self, files):
      command = self.GetProcessorCommand()
      worker = self.GetProcessorWorker()
  
      commands = [command + [file] for file in files]
      count = multiprocessing.cpu_count()
      pool = multiprocessing.Pool(count)
      try:
        results = pool.map_async(worker, commands).get(timeout=240)
      except KeyboardInterrupt:
        print("\nCaught KeyboardInterrupt, terminating workers.")
        pool.terminate()
        pool.join()
        sys.exit(1)
  
      unformatted_files = []
      for index, errors in enumerate(results):
        if errors > 0:
          unformatted_files.append(files[index])
  
      return unformatted_files
  
  
  class CppLintProcessor(CacheableSourceFileProcessor):
    """
    Lint files to check that they follow the google code style.
    """
  
    def __init__(self, use_cache=True):
      super(CppLintProcessor, self).__init__(
        use_cache=use_cache, cache_file_path='.cpplint-cache', file_type='C/C++')
  
    def IsRelevant(self, name):
      return name.endswith('.cc') or name.endswith('.h')
  
    def IgnoreDir(self, name):
      return (super(CppLintProcessor, self).IgnoreDir(name)
              or (name == 'third_party'))
  
    IGNORE_LINT = [
      'export-template.h',
      'flag-definitions.h',
      'gay-fixed.cc',
      'gay-precision.cc',
      'gay-shortest.cc',
    ]
  
    def IgnoreFile(self, name):
      return (super(CppLintProcessor, self).IgnoreFile(name)
                or (name in CppLintProcessor.IGNORE_LINT))
  
    def GetPathsToSearch(self):
      dirs = ['include', 'samples', 'src']
      test_dirs = ['cctest', 'common', 'fuzzer', 'inspector', 'unittests']
      return dirs + [join('test', dir) for dir in test_dirs]
  
    def GetProcessorWorker(self):
      return CppLintWorker
  
    def GetProcessorScript(self):
      filters = ','.join([n for n in LINT_RULES])
      arguments = ['--filter', filters]
      for path in [TOOLS_PATH] + os.environ["PATH"].split(os.pathsep):
        path = path.strip('"')
        cpplint = os.path.join(path, 'cpplint.py')
        if os.path.isfile(cpplint):
          return cpplint, arguments
  
      return None, arguments
  
  
  class TorqueLintProcessor(CacheableSourceFileProcessor):
    """
    Check .tq files to verify they follow the Torque style guide.
    """
  
    def __init__(self, use_cache=True):
      super(TorqueLintProcessor, self).__init__(
        use_cache=use_cache, cache_file_path='.torquelint-cache',
        file_type='Torque')
  
    def IsRelevant(self, name):
      return name.endswith('.tq')
  
    def GetPathsToSearch(self):
      dirs = ['third_party', 'src']
      test_dirs = ['torque']
      return dirs + [join('test', dir) for dir in test_dirs]
  
    def GetProcessorWorker(self):
      return TorqueLintWorker
  
    def GetProcessorScript(self):
      torque_tools = os.path.join(TOOLS_PATH, "torque")
      torque_path = os.path.join(torque_tools, "format-torque.py")
      arguments = ["-il"]
      if os.path.isfile(torque_path):
        return torque_path, arguments
  
      return None, arguments
  
  class JSLintProcessor(CacheableSourceFileProcessor):
    """
    Check .{m}js file to verify they follow the JS Style guide.
    """
    def __init__(self, use_cache=True):
      super(JSLintProcessor, self).__init__(
        use_cache=use_cache, cache_file_path='.jslint-cache',
        file_type='JavaScript')
  
    def IsRelevant(self, name):
      return name.endswith('.js') or name.endswith('.mjs')
  
    def GetPathsToSearch(self):
      return ['tools/system-analyzer', 'tools/heap-layout', 'tools/js']
  
    def GetProcessorWorker(self):
      return JSLintWorker
  
    def GetProcessorScript(self):
      for path in [TOOLS_PATH] + os.environ["PATH"].split(os.pathsep):
        path = path.strip('"')
        clang_format = os.path.join(path, 'clang_format.py')
        if os.path.isfile(clang_format):
          return clang_format, []
  
      return None, []
  
  COPYRIGHT_HEADER_PATTERN = re.compile(
      r'Copyright [\d-]*20[0-2][0-9] the V8 project authors. All rights reserved.')
  
  class SourceProcessor(SourceFileProcessor):
    """
    Check that all files include a copyright notice and no trailing whitespaces.
    """
  
    RELEVANT_EXTENSIONS = ['.js', '.cc', '.h', '.py', '.c', '.status', '.tq', '.g4']
  
    def __init__(self):
      self.runtime_function_call_pattern = self.CreateRuntimeFunctionCallMatcher()
  
    def CreateRuntimeFunctionCallMatcher(self):
      runtime_h_path = join(dirname(TOOLS_PATH), 'src/runtime/runtime.h')
      pattern = re.compile(r'\s+F\(([^,]*),.*\)')
      runtime_functions = []
      with open(runtime_h_path) as f:
        for line in f.readlines():
          m = pattern.match(line)
          if m:
            runtime_functions.append(m.group(1))
      if len(runtime_functions) < 250:
        print ("Runtime functions list is suspiciously short. "
               "Consider updating the presubmit script.")
        sys.exit(1)
      str = '(\%\s+(' + '|'.join(runtime_functions) + '))[\s\(]'
      return re.compile(str)
  
    # Overwriting the one in the parent class.
    def FindFilesIn(self, path):
      if os.path.exists(path+'/.git'):
        output = subprocess.Popen('git ls-files --full-name',
                                  stdout=PIPE, cwd=path, shell=True)
        result = []
        for file in maybe_decode(output.stdout.read()).split():
          for dir_part in os.path.dirname(file).replace(os.sep, '/').split('/'):
            if self.IgnoreDir(dir_part):
              break
          else:
            if (self.IsRelevant(file) and os.path.exists(file)
                and not self.IgnoreFile(file)):
              result.append(join(path, file))
        if output.wait() == 0:
          return result
      return super(SourceProcessor, self).FindFilesIn(path)
  
    def IsRelevant(self, name):
      for ext in SourceProcessor.RELEVANT_EXTENSIONS:
        if name.endswith(ext):
          return True
      return False
  
    def GetPathsToSearch(self):
      return ['.']
  
    def IgnoreDir(self, name):
      return (super(SourceProcessor, self).IgnoreDir(name) or
              name in ('third_party', 'out', 'obj', 'DerivedSources'))
  
    IGNORE_COPYRIGHTS = ['box2d.js',
                         'cpplint.py',
                         'copy.js',
                         'corrections.js',
                         'crypto.js',
                         'daemon.py',
                         'earley-boyer.js',
                         'fannkuch.js',
                         'fasta.js',
                         'injected-script.cc',
                         'injected-script.h',
                         'libraries.cc',
                         'libraries-empty.cc',
                         'lua_binarytrees.js',
                         'meta-123.js',
                         'memops.js',
                         'poppler.js',
                         'primes.js',
                         'raytrace.js',
                         'regexp-pcre.js',
                         'resources-123.js',
                         'sqlite.js',
                         'sqlite-change-heap.js',
                         'sqlite-pointer-masking.js',
                         'sqlite-safe-heap.js',
                         'v8-debugger-script.h',
                         'v8-inspector-impl.cc',
                         'v8-inspector-impl.h',
                         'v8-runtime-agent-impl.cc',
                         'v8-runtime-agent-impl.h',
                         'gnuplot-4.6.3-emscripten.js',
                         'zlib.js']
    IGNORE_TABS = IGNORE_COPYRIGHTS + ['unicode-test.js', 'html-comments.js']
  
    IGNORE_COPYRIGHTS_DIRECTORIES = [
        "test/test262/local-tests",
        "test/mjsunit/wasm/bulk-memory-spec",
    ]
  
    def EndOfDeclaration(self, line):
      return line == "}" or line == "};"
  
    def StartOfDeclaration(self, line):
      return line.find("//") == 0 or \
             line.find("/*") == 0 or \
             line.find(") {") != -1
  
    def ProcessContents(self, name, contents):
      result = True
      base = basename(name)
      if not base in SourceProcessor.IGNORE_TABS:
        if '\t' in contents:
          print("%s contains tabs" % name)
          result = False
      if not base in SourceProcessor.IGNORE_COPYRIGHTS and \
          not any(ignore_dir in name for ignore_dir
                  in SourceProcessor.IGNORE_COPYRIGHTS_DIRECTORIES):
        if not COPYRIGHT_HEADER_PATTERN.search(contents):
          print("%s is missing a correct copyright header." % name)
          result = False
      if ' \n' in contents or contents.endswith(' '):
        line = 0
        lines = []
        parts = contents.split(' \n')
        if not contents.endswith(' '):
          parts.pop()
        for part in parts:
          line += part.count('\n') + 1
          lines.append(str(line))
        linenumbers = ', '.join(lines)
        if len(lines) > 1:
          print("%s has trailing whitespaces in lines %s." % (name, linenumbers))
        else:
          print("%s has trailing whitespaces in line %s." % (name, linenumbers))
        result = False
      if not contents.endswith('\n') or contents.endswith('\n\n'):
        print("%s does not end with a single new line." % name)
        result = False
      # Sanitize flags for fuzzer.
      if (".js" in name or ".mjs" in name) and ("mjsunit" in name or "debugger" in name):
        match = FLAGS_LINE.search(contents)
        if match:
          print("%s Flags should use '-' (not '_')" % name)
          result = False
        if (not "mjsunit/mjsunit.js" in name and
            not "mjsunit/mjsunit_numfuzz.js" in name):
          if ASSERT_OPTIMIZED_PATTERN.search(contents) and \
              not FLAGS_ENABLE_OPT.search(contents):
            print("%s Flag --opt should be set if " \
                  "assertOptimized() is used" % name)
            result = False
          if ASSERT_UNOPTIMIZED_PATTERN.search(contents) and \
              not FLAGS_NO_ALWAYS_OPT.search(contents):
            print("%s Flag --no-always-opt should be set if " \
                  "assertUnoptimized() is used" % name)
            result = False
  
        match = self.runtime_function_call_pattern.search(contents)
        if match:
          print("%s has unexpected spaces in a runtime call '%s'" % (name, match.group(1)))
          result = False
      return result
  
    def ProcessFiles(self, files):
      success = True
      violations = 0
      for file in files:
        try:
          handle = open(file, "rb")
          contents = maybe_decode(handle.read(), "ISO-8859-1")
          if len(contents) > 0 and not self.ProcessContents(file, contents):
            success = False
            violations += 1
        finally:
          handle.close()
      print("Total violating files: %s" % violations)
      return success
  
  def _CheckStatusFileForDuplicateKeys(filepath):
    comma_space_bracket = re.compile(", *]")
    lines = []
    with open(filepath) as f:
      for line in f.readlines():
        # Skip all-comment lines.
        if line.lstrip().startswith("#"): continue
        # Strip away comments at the end of the line.
        comment_start = line.find("#")
        if comment_start != -1:
          line = line[:comment_start]
        line = line.strip()
        # Strip away trailing commas within the line.
        line = comma_space_bracket.sub("]", line)
        if len(line) > 0:
          lines.append(line)
  
    # Strip away trailing commas at line ends. Ugh.
    for i in range(len(lines) - 1):
      if (lines[i].endswith(",") and len(lines[i + 1]) > 0 and
          lines[i + 1][0] in ("}", "]")):
        lines[i] = lines[i][:-1]
  
    contents = "\n".join(lines)
    # JSON wants double-quotes.
    contents = contents.replace("'", '"')
    # Fill in keywords (like PASS, SKIP).
    for key in statusfile.KEYWORDS:
      contents = re.sub(r"\b%s\b" % key, "\"%s\"" % key, contents)
  
    status = {"success": True}
    def check_pairs(pairs):
      keys = {}
      for key, value in pairs:
        if key in keys:
          print("%s: Error: duplicate key %s" % (filepath, key))
          status["success"] = False
        keys[key] = True
  
    json.loads(contents, object_pairs_hook=check_pairs)
    return status["success"]
  
  
  class StatusFilesProcessor(SourceFileProcessor):
    """Checks status files for incorrect syntax and duplicate keys."""
  
    def IsRelevant(self, name):
      # Several changes to files under the test directories could impact status
      # files.
      return True
  
    def GetPathsToSearch(self):
      return ['test', 'tools/testrunner']
  
    def ProcessFiles(self, files):
      success = True
      for status_file_path in sorted(self._GetStatusFiles(files)):
        success &= statusfile.PresubmitCheck(status_file_path)
        success &= _CheckStatusFileForDuplicateKeys(status_file_path)
      return success
  
    def _GetStatusFiles(self, files):
      test_path = join(dirname(TOOLS_PATH), 'test')
      testrunner_path = join(TOOLS_PATH, 'testrunner')
      status_files = set()
  
      for file_path in files:
        if file_path.startswith(testrunner_path):
          for suitepath in os.listdir(test_path):
            suitename = os.path.basename(suitepath)
            status_file = os.path.join(
                test_path, suitename, suitename + ".status")
            if os.path.exists(status_file):
              status_files.add(status_file)
          return status_files
  
      for file_path in files:
        if file_path.startswith(test_path):
          # Strip off absolute path prefix pointing to test suites.
          pieces = file_path[len(test_path):].lstrip(os.sep).split(os.sep)
          if pieces:
            # Infer affected status file name. Only care for existing status
            # files. Some directories under "test" don't have any.
            if not os.path.isdir(join(test_path, pieces[0])):
              continue
            status_file = join(test_path, pieces[0], pieces[0] + ".status")
            if not os.path.exists(status_file):
              continue
            status_files.add(status_file)
      return status_files
  
  
  def CheckDeps(workspace):
    checkdeps_py = join(workspace, 'buildtools', 'checkdeps', 'checkdeps.py')
    return subprocess.call([sys.executable, checkdeps_py, workspace]) == 0
  
  
  def PyTests(workspace):
    result = True
    for script in [
        join(workspace, 'tools', 'clusterfuzz', 'foozzie', 'v8_foozzie_test.py'),
        join(workspace, 'tools', 'release', 'test_scripts.py'),
        join(workspace, 'tools', 'unittests', 'run_tests_test.py'),
        join(workspace, 'tools', 'unittests', 'run_perf_test.py'),
        join(workspace, 'tools', 'testrunner', 'testproc', 'variant_unittest.py'),
      ]:
      print('Running ' + script)
      result &= subprocess.call(
          [sys.executable, script], stdout=subprocess.PIPE) == 0
  
    return result
  
  
  def GetOptions():
    result = optparse.OptionParser()
    result.add_option('--no-lint', help="Do not run cpplint", default=False,
                      action="store_true")
    result.add_option('--no-linter-cache', help="Do not cache linter results",
                      default=False, action="store_true")
  
    return result
  
  
  def Main():
    workspace = abspath(join(dirname(sys.argv[0]), '..'))
    parser = GetOptions()
    (options, args) = parser.parse_args()
    success = True
    print("Running checkdeps...")
    success &= CheckDeps(workspace)
    use_linter_cache = not options.no_linter_cache
    if not options.no_lint:
      print("Running C++ lint check...")
      success &= CppLintProcessor(use_cache=use_linter_cache).RunOnPath(workspace)
  
    print("Running Torque formatting check...")
    success &= TorqueLintProcessor(use_cache=use_linter_cache).RunOnPath(
      workspace)
    print("Running JavaScript formatting check...")
    success &= JSLintProcessor(use_cache=use_linter_cache).RunOnPath(
      workspace)
    print("Running copyright header, trailing whitespaces and " \
          "two empty lines between declarations check...")
    success &= SourceProcessor().RunOnPath(workspace)
    print("Running status-files check...")
    success &= StatusFilesProcessor().RunOnPath(workspace)
    print("Running python tests...")
    success &= PyTests(workspace)
    if success:
      return 0
    else:
      return 1
  
  
  if __name__ == '__main__':
    sys.exit(Main())
  