| # Copyright (C) 2009 Google Inc. All rights reserved. |
| # Copyright (C) 2010 Chris Jerdonek (chris.jerdonek@gmail.com) |
| # Copyright (C) 2010 ProFUSION embedded systems |
| # |
| # 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. |
| |
| """Front end of some style-checker modules.""" |
| |
| import logging |
| import os.path |
| import re |
| import sys |
| |
| from webkitpy.common.system.log_utils import configure_logging as _configure_logging |
| from webkitpy.style.checkers.common import CarriageReturnChecker |
| from webkitpy.style.checkers.common import categories as CommonCategories |
| from webkitpy.style.checkers.cpp import CppChecker |
| from webkitpy.style.checkers.jsonchecker import JSONChecker |
| from webkitpy.style.checkers.png import PNGChecker |
| from webkitpy.style.checkers.python import PythonChecker |
| from webkitpy.style.checkers.test_expectations import TestExpectationsChecker |
| from webkitpy.style.checkers.text import TextChecker |
| from webkitpy.style.checkers.xcodeproj import XcodeProjectFileChecker |
| from webkitpy.style.checkers.xml import XMLChecker |
| from webkitpy.style.error_handlers import DefaultStyleErrorHandler |
| from webkitpy.style.filter import FilterConfiguration |
| from webkitpy.style.optparser import ArgumentParser |
| from webkitpy.style.optparser import DefaultCommandOptionValues |
| |
| |
| _log = logging.getLogger(__name__) |
| |
| |
| # These are default option values for the command-line option parser. |
| _DEFAULT_MIN_CONFIDENCE = 1 |
| _DEFAULT_OUTPUT_FORMAT = 'emacs' |
| |
| |
| # FIXME: For style categories we will never want to have, remove them. |
| # For categories for which we want to have similar functionality, |
| # modify the implementation and enable them. |
| # |
| # Throughout this module, we use "filter rule" rather than "filter" |
| # for an individual boolean filter flag like "+foo". This allows us to |
| # reserve "filter" for what one gets by collectively applying all of |
| # the filter rules. |
| # |
| # The base filter rules are the filter rules that begin the list of |
| # filter rules used to check style. For example, these rules precede |
| # any user-specified filter rules. Since by default all categories are |
| # checked, this list should normally include only rules that begin |
| # with a "-" sign. |
| _BASE_FILTER_RULES = [ |
| '-build/endif_comment', |
| '-build/include_what_you_use', # <string> for std::string |
| '-build/storage_class', # const static |
| '-legal/copyright', |
| '-readability/multiline_comment', |
| '-readability/braces', # int foo() {}; |
| '-readability/fn_size', |
| '-readability/casting', |
| '-readability/function', |
| '-runtime/arrays', # variable length array |
| '-runtime/casting', |
| '-runtime/sizeof', |
| '-runtime/explicit', # explicit |
| '-runtime/virtual', # virtual dtor |
| '-runtime/printf', |
| '-runtime/threadsafe_fn', |
| '-runtime/rtti', |
| # List Python pep8 categories last. |
| # |
| # Because much of WebKit's Python code base does not abide by the |
| # PEP8 79 character limit, we ignore the 79-character-limit category |
| # pep8/E501 for now. |
| # |
| # FIXME: Consider bringing WebKit's Python code base into conformance |
| # with the 79 character limit, or some higher limit that is |
| # agreeable to the WebKit project. |
| '-pep8/E501', |
| |
| # FIXME: Move the pylint rules from the pylintrc to here. This will |
| # also require us to re-work lint-webkitpy to produce the equivalent output. |
| ] |
| |
| |
| # The path-specific filter rules. |
| # |
| # This list is order sensitive. Only the first path substring match |
| # is used. See the FilterConfiguration documentation in filter.py |
| # for more information on this list. |
| # |
| # Each string appearing in this nested list should have at least |
| # one associated unit test assertion. These assertions are located, |
| # for example, in the test_path_rules_specifier() unit test method of |
| # checker_unittest.py. |
| _PATH_RULES_SPECIFIER = [ |
| # For third-party Python code, keep only the following checks-- |
| # |
| # No tabs: to avoid having to set the SVN allow-tabs property. |
| # No trailing white space: since this is easy to correct. |
| # No carriage-return line endings: since this is easy to correct. |
| # |
| (['webkitpy/thirdparty/'], |
| ['-', |
| '+pep8/W191', # Tabs |
| '+pep8/W291', # Trailing white space |
| '+whitespace/carriage_return']), |
| |
| ([ # Jinja templates: files have .cpp or .h extensions, but contain |
| # template code, which can't be handled, so disable tests. |
| 'Source/bindings/templates', |
| 'Source/build/scripts/templates'], |
| ['-']), |
| |
| ([ # IDL compiler reference output |
| # Conforming to style significantly increases the complexity of the code |
| # generator and decreases *its* readability, which is of more concern |
| # than style of the machine-generated code itself. |
| 'Source/bindings/tests/results'], |
| ['-']), |
| ] |
| |
| |
| _CPP_FILE_EXTENSIONS = [ |
| 'c', |
| 'cpp', |
| 'h', |
| ] |
| |
| _JSON_FILE_EXTENSION = 'json' |
| |
| _PYTHON_FILE_EXTENSION = 'py' |
| |
| _TEXT_FILE_EXTENSIONS = [ |
| 'cc', |
| 'cgi', |
| 'css', |
| 'gyp', |
| 'gypi', |
| 'html', |
| 'idl', |
| 'in', |
| 'js', |
| 'mm', |
| 'php', |
| 'pl', |
| 'pm', |
| 'rb', |
| 'sh', |
| 'txt', |
| 'xhtml', |
| 'y', |
| ] |
| |
| _XCODEPROJ_FILE_EXTENSION = 'pbxproj' |
| |
| _XML_FILE_EXTENSIONS = [ |
| 'vcproj', |
| 'vsprops', |
| ] |
| |
| _PNG_FILE_EXTENSION = 'png' |
| |
| # Files to skip that are less obvious. |
| # |
| # Some files should be skipped when checking style. For example, |
| # WebKit maintains some files in Mozilla style on purpose to ease |
| # future merges. |
| _SKIPPED_FILES_WITH_WARNING = [ |
| 'Source/WebKit/gtk/tests/', |
| # All WebKit*.h files in Source/WebKit2/UIProcess/API/gtk, |
| # except those ending in ...Private.h are GTK+ API headers, |
| # which differ greatly from WebKit coding style. |
| re.compile(r'Source/WebKit2/UIProcess/API/gtk/WebKit(?!.*Private\.h).*\.h$'), |
| re.compile(r'Source/WebKit2/WebProcess/InjectedBundle/API/gtk/WebKit(?!.*Private\.h).*\.h$'), |
| 'Source/WebKit2/UIProcess/API/gtk/webkit2.h', |
| 'Source/WebKit2/WebProcess/InjectedBundle/API/gtk/webkit-web-extension.h'] |
| |
| # Files to skip that are more common or obvious. |
| # |
| # This list should be in addition to files with FileType.NONE. Files |
| # with FileType.NONE are automatically skipped without warning. |
| _SKIPPED_FILES_WITHOUT_WARNING = [ |
| 'LayoutTests' + os.path.sep, |
| 'Source/ThirdParty/leveldb' + os.path.sep, |
| # Prevents this being recognized as a text file. |
| 'Source/WebCore/GNUmakefile.features.am.in', |
| ] |
| |
| # Extensions of files which are allowed to contain carriage returns. |
| _CARRIAGE_RETURN_ALLOWED_FILE_EXTENSIONS = [ |
| 'png', |
| 'vcproj', |
| 'vsprops', |
| ] |
| |
| # The maximum number of errors to report per file, per category. |
| # If a category is not a key, then it has no maximum. |
| _MAX_REPORTS_PER_CATEGORY = { |
| 'whitespace/carriage_return': 1 |
| } |
| |
| |
| def _all_categories(): |
| """Return the set of all categories used by check-webkit-style.""" |
| # Take the union across all checkers. |
| categories = CommonCategories.union(CppChecker.categories) |
| categories = categories.union(JSONChecker.categories) |
| categories = categories.union(TestExpectationsChecker.categories) |
| categories = categories.union(PNGChecker.categories) |
| |
| # FIXME: Consider adding all of the pep8 categories. Since they |
| # are not too meaningful for documentation purposes, for |
| # now we add only the categories needed for the unit tests |
| # (which validate the consistency of the configuration |
| # settings against the known categories, etc). |
| categories = categories.union(['pep8/W191', 'pep8/W291', 'pep8/E501']) |
| |
| return categories |
| |
| |
| def _check_webkit_style_defaults(): |
| """Return the default command-line options for check-webkit-style.""" |
| return DefaultCommandOptionValues(min_confidence=_DEFAULT_MIN_CONFIDENCE, |
| output_format=_DEFAULT_OUTPUT_FORMAT) |
| |
| |
| # This function assists in optparser not having to import from checker. |
| def check_webkit_style_parser(): |
| all_categories = _all_categories() |
| default_options = _check_webkit_style_defaults() |
| return ArgumentParser(all_categories=all_categories, |
| base_filter_rules=_BASE_FILTER_RULES, |
| default_options=default_options) |
| |
| |
| def check_webkit_style_configuration(options): |
| """Return a StyleProcessorConfiguration instance for check-webkit-style. |
| |
| Args: |
| options: A CommandOptionValues instance. |
| """ |
| filter_configuration = FilterConfiguration( |
| base_rules=_BASE_FILTER_RULES, |
| path_specific=_PATH_RULES_SPECIFIER, |
| user_rules=options.filter_rules) |
| |
| return StyleProcessorConfiguration(filter_configuration=filter_configuration, |
| max_reports_per_category=_MAX_REPORTS_PER_CATEGORY, |
| min_confidence=options.min_confidence, |
| output_format=options.output_format, |
| stderr_write=sys.stderr.write) |
| |
| |
| def _create_log_handlers(stream): |
| """Create and return a default list of logging.Handler instances. |
| |
| Format WARNING messages and above to display the logging level, and |
| messages strictly below WARNING not to display it. |
| |
| Args: |
| stream: See the configure_logging() docstring. |
| """ |
| # Handles logging.WARNING and above. |
| error_handler = logging.StreamHandler(stream) |
| error_handler.setLevel(logging.WARNING) |
| formatter = logging.Formatter('%(levelname)s: %(message)s') |
| error_handler.setFormatter(formatter) |
| |
| # Create a logging.Filter instance that only accepts messages |
| # below WARNING (i.e. filters out anything WARNING or above). |
| non_error_filter = logging.Filter() |
| # The filter method accepts a logging.LogRecord instance. |
| non_error_filter.filter = lambda record: record.levelno < logging.WARNING |
| |
| non_error_handler = logging.StreamHandler(stream) |
| non_error_handler.addFilter(non_error_filter) |
| formatter = logging.Formatter('%(message)s') |
| non_error_handler.setFormatter(formatter) |
| |
| return [error_handler, non_error_handler] |
| |
| |
| def _create_debug_log_handlers(stream): |
| """Create and return a list of logging.Handler instances for debugging. |
| |
| Args: |
| stream: See the configure_logging() docstring. |
| """ |
| handler = logging.StreamHandler(stream) |
| formatter = logging.Formatter('%(name)s: %(levelname)-8s %(message)s') |
| handler.setFormatter(formatter) |
| |
| return [handler] |
| |
| |
| def configure_logging(stream, logger=None, is_verbose=False): |
| """Configure logging, and return the list of handlers added. |
| |
| Returns: |
| A list of references to the logging handlers added to the root |
| logger. This allows the caller to later remove the handlers |
| using logger.removeHandler. This is useful primarily during unit |
| testing where the caller may want to configure logging temporarily |
| and then undo the configuring. |
| |
| Args: |
| stream: A file-like object to which to log. The stream must |
| define an "encoding" data attribute, or else logging |
| raises an error. |
| logger: A logging.logger instance to configure. This parameter |
| should be used only in unit tests. Defaults to the |
| root logger. |
| is_verbose: A boolean value of whether logging should be verbose. |
| """ |
| # If the stream does not define an "encoding" data attribute, the |
| # logging module can throw an error like the following: |
| # |
| # Traceback (most recent call last): |
| # File "/System/Library/Frameworks/Python.framework/Versions/2.6/... |
| # lib/python2.6/logging/__init__.py", line 761, in emit |
| # self.stream.write(fs % msg.encode(self.stream.encoding)) |
| # LookupError: unknown encoding: unknown |
| if logger is None: |
| logger = logging.getLogger() |
| |
| if is_verbose: |
| logging_level = logging.DEBUG |
| handlers = _create_debug_log_handlers(stream) |
| else: |
| logging_level = logging.INFO |
| handlers = _create_log_handlers(stream) |
| |
| handlers = _configure_logging(logging_level=logging_level, logger=logger, |
| handlers=handlers) |
| |
| return handlers |
| |
| |
| # Enum-like idiom |
| class FileType: |
| |
| NONE = 0 # FileType.NONE evaluates to False. |
| # Alphabetize remaining types |
| # CHANGELOG = 1 |
| CPP = 2 |
| JSON = 3 |
| PNG = 4 |
| PYTHON = 5 |
| TEXT = 6 |
| # WATCHLIST = 7 |
| XML = 8 |
| XCODEPROJ = 9 |
| |
| |
| class CheckerDispatcher(object): |
| |
| """Supports determining whether and how to check style, based on path.""" |
| |
| def _file_extension(self, file_path): |
| """Return the file extension without the leading dot.""" |
| return os.path.splitext(file_path)[1].lstrip('.') |
| |
| def _should_skip_file_path(self, file_path, skip_array_entry): |
| match = re.search(r"\s*png$", file_path) |
| if match: |
| return False |
| if isinstance(skip_array_entry, str): |
| if file_path.find(skip_array_entry) >= 0: |
| return True |
| elif skip_array_entry.match(file_path): |
| return True |
| return False |
| |
| def should_skip_with_warning(self, file_path): |
| """Return whether the given file should be skipped with a warning.""" |
| for skipped_file in _SKIPPED_FILES_WITH_WARNING: |
| if self._should_skip_file_path(file_path, skipped_file): |
| return True |
| return False |
| |
| def should_skip_without_warning(self, file_path): |
| """Return whether the given file should be skipped without a warning.""" |
| if not self._file_type(file_path): # FileType.NONE. |
| return True |
| # Since "LayoutTests" is in _SKIPPED_FILES_WITHOUT_WARNING, make |
| # an exception to prevent files like 'TestExpectations' from being skipped. |
| # |
| # FIXME: Figure out a good way to avoid having to add special logic |
| # for this special case. |
| basename = os.path.basename(file_path) |
| if basename == 'TestExpectations': |
| return False |
| for skipped_file in _SKIPPED_FILES_WITHOUT_WARNING: |
| if self._should_skip_file_path(file_path, skipped_file): |
| return True |
| return False |
| |
| def should_check_and_strip_carriage_returns(self, file_path): |
| return self._file_extension(file_path) not in _CARRIAGE_RETURN_ALLOWED_FILE_EXTENSIONS |
| |
| def _file_type(self, file_path): |
| """Return the file type corresponding to the given file.""" |
| file_extension = self._file_extension(file_path) |
| |
| if (file_extension in _CPP_FILE_EXTENSIONS) or (file_path == '-'): |
| # FIXME: Do something about the comment below and the issue it |
| # raises since cpp_style already relies on the extension. |
| # |
| # Treat stdin as C++. Since the extension is unknown when |
| # reading from stdin, cpp_style tests should not rely on |
| # the extension. |
| return FileType.CPP |
| elif file_extension == _JSON_FILE_EXTENSION: |
| return FileType.JSON |
| elif file_extension == _PYTHON_FILE_EXTENSION: |
| return FileType.PYTHON |
| elif file_extension in _XML_FILE_EXTENSIONS: |
| return FileType.XML |
| elif file_extension == _XCODEPROJ_FILE_EXTENSION: |
| return FileType.XCODEPROJ |
| elif file_extension == _PNG_FILE_EXTENSION: |
| return FileType.PNG |
| elif ((not file_extension and os.path.join('Tools', 'Scripts') in file_path) or |
| file_extension in _TEXT_FILE_EXTENSIONS or os.path.basename(file_path) == 'TestExpectations'): |
| return FileType.TEXT |
| else: |
| return FileType.NONE |
| |
| def _create_checker(self, file_type, file_path, handle_style_error, |
| min_confidence): |
| """Instantiate and return a style checker based on file type.""" |
| if file_type == FileType.NONE: |
| checker = None |
| elif file_type == FileType.CPP: |
| file_extension = self._file_extension(file_path) |
| checker = CppChecker(file_path, file_extension, |
| handle_style_error, min_confidence) |
| elif file_type == FileType.JSON: |
| checker = JSONChecker(file_path, handle_style_error) |
| elif file_type == FileType.PYTHON: |
| checker = PythonChecker(file_path, handle_style_error) |
| elif file_type == FileType.XML: |
| checker = XMLChecker(file_path, handle_style_error) |
| elif file_type == FileType.XCODEPROJ: |
| checker = XcodeProjectFileChecker(file_path, handle_style_error) |
| elif file_type == FileType.PNG: |
| checker = PNGChecker(file_path, handle_style_error) |
| elif file_type == FileType.TEXT: |
| basename = os.path.basename(file_path) |
| if basename == 'TestExpectations': |
| checker = TestExpectationsChecker(file_path, handle_style_error) |
| else: |
| checker = TextChecker(file_path, handle_style_error) |
| else: |
| raise ValueError('Invalid file type "%(file_type)s": the only valid file types ' |
| 'are %(NONE)s, %(CPP)s, and %(TEXT)s.' |
| % {'file_type': file_type, |
| 'NONE': FileType.NONE, |
| 'CPP': FileType.CPP, |
| 'TEXT': FileType.TEXT}) |
| |
| return checker |
| |
| def dispatch(self, file_path, handle_style_error, min_confidence): |
| """Instantiate and return a style checker based on file path.""" |
| file_type = self._file_type(file_path) |
| |
| checker = self._create_checker(file_type, |
| file_path, |
| handle_style_error, |
| min_confidence) |
| return checker |
| |
| |
| # FIXME: Remove the stderr_write attribute from this class and replace |
| # its use with calls to a logging module logger. |
| class StyleProcessorConfiguration(object): |
| |
| """Stores configuration values for the StyleProcessor class. |
| |
| Attributes: |
| min_confidence: An integer between 1 and 5 inclusive that is the |
| minimum confidence level of style errors to report. |
| |
| max_reports_per_category: The maximum number of errors to report |
| per category, per file. |
| |
| stderr_write: A function that takes a string as a parameter and |
| serves as stderr.write. |
| """ |
| |
| def __init__(self, |
| filter_configuration, |
| max_reports_per_category, |
| min_confidence, |
| output_format, |
| stderr_write): |
| """Create a StyleProcessorConfiguration instance. |
| |
| Args: |
| filter_configuration: A FilterConfiguration instance. The default |
| is the "empty" filter configuration, which |
| means that all errors should be checked. |
| |
| max_reports_per_category: The maximum number of errors to report |
| per category, per file. |
| |
| min_confidence: An integer between 1 and 5 inclusive that is the |
| minimum confidence level of style errors to report. |
| The default is 1, which reports all style errors. |
| |
| output_format: A string that is the output format. The supported |
| output formats are "emacs" which emacs can parse |
| and "vs7" which Microsoft Visual Studio 7 can parse. |
| |
| stderr_write: A function that takes a string as a parameter and |
| serves as stderr.write. |
| """ |
| self._filter_configuration = filter_configuration |
| self._output_format = output_format |
| |
| self.max_reports_per_category = max_reports_per_category |
| self.min_confidence = min_confidence |
| self.stderr_write = stderr_write |
| |
| def is_reportable(self, category, confidence_in_error, file_path): |
| """Return whether an error is reportable. |
| |
| An error is reportable if both the confidence in the error is |
| at least the minimum confidence level and the current filter |
| says the category should be checked for the given path. |
| |
| Args: |
| category: A string that is a style category. |
| confidence_in_error: An integer between 1 and 5 inclusive that is |
| the application's confidence in the error. |
| A higher number means greater confidence. |
| file_path: The path of the file being checked |
| """ |
| if confidence_in_error < self.min_confidence: |
| return False |
| |
| return self._filter_configuration.should_check(category, file_path) |
| |
| def write_style_error(self, |
| category, |
| confidence_in_error, |
| file_path, |
| line_number, |
| message): |
| """Write a style error to the configured stderr.""" |
| if self._output_format == 'vs7': |
| format_string = '%s(%s): %s [%s] [%d]\n' |
| else: |
| format_string = '%s:%s: %s [%s] [%d]\n' |
| |
| self.stderr_write(format_string % (file_path, |
| line_number, |
| message, |
| category, |
| confidence_in_error)) |
| |
| |
| class ProcessorBase(object): |
| |
| """The base class for processors of lists of lines.""" |
| |
| def should_process(self, file_path): |
| """Return whether the file at file_path should be processed. |
| |
| The TextFileReader class calls this method prior to reading in |
| the lines of a file. Use this method, for example, to prevent |
| the style checker from reading binary files into memory. |
| """ |
| raise NotImplementedError('Subclasses should implement.') |
| |
| def process(self, lines, file_path, **kwargs): |
| """Process lines of text read from a file. |
| |
| Args: |
| lines: A list of lines of text to process. |
| file_path: The path from which the lines were read. |
| **kwargs: This argument signifies that the process() method of |
| subclasses of ProcessorBase may support additional |
| keyword arguments. |
| For example, a style checker's check() method |
| may support a "reportable_lines" parameter that represents |
| the line numbers of the lines for which style errors |
| should be reported. |
| """ |
| raise NotImplementedError('Subclasses should implement.') |
| |
| |
| class StyleProcessor(ProcessorBase): |
| |
| """A ProcessorBase for checking style. |
| |
| Attributes: |
| error_count: An integer that is the total number of reported |
| errors for the lifetime of this instance. |
| """ |
| |
| def __init__(self, configuration, mock_dispatcher=None, |
| mock_increment_error_count=None, |
| mock_carriage_checker_class=None): |
| """Create an instance. |
| |
| Args: |
| configuration: A StyleProcessorConfiguration instance. |
| mock_dispatcher: A mock CheckerDispatcher instance. This |
| parameter is for unit testing. Defaults to a |
| CheckerDispatcher instance. |
| mock_increment_error_count: A mock error-count incrementer. |
| mock_carriage_checker_class: A mock class for checking and |
| transforming carriage returns. |
| This parameter is for unit testing. |
| Defaults to CarriageReturnChecker. |
| """ |
| if mock_dispatcher is None: |
| dispatcher = CheckerDispatcher() |
| else: |
| dispatcher = mock_dispatcher |
| |
| if mock_increment_error_count is None: |
| # The following blank line is present to avoid flagging by pep8.py. |
| |
| def increment_error_count(): |
| """Increment the total count of reported errors.""" |
| self.error_count += 1 |
| else: |
| increment_error_count = mock_increment_error_count |
| |
| if mock_carriage_checker_class is None: |
| # This needs to be a class rather than an instance since the |
| # process() method instantiates one using parameters. |
| carriage_checker_class = CarriageReturnChecker |
| else: |
| carriage_checker_class = mock_carriage_checker_class |
| |
| self.error_count = 0 |
| |
| self._carriage_checker_class = carriage_checker_class |
| self._configuration = configuration |
| self._dispatcher = dispatcher |
| self._increment_error_count = increment_error_count |
| |
| def should_process(self, file_path): |
| """Return whether the file should be checked for style.""" |
| if self._dispatcher.should_skip_without_warning(file_path): |
| return False |
| if self._dispatcher.should_skip_with_warning(file_path): |
| _log.warning('File exempt from style guide. Skipping: "%s"', file_path) |
| return False |
| return True |
| |
| def process(self, lines, file_path, line_numbers=None): |
| """Check the given lines for style. |
| |
| Arguments: |
| lines: A list of all lines in the file to check. |
| file_path: The path of the file to process. If possible, the path |
| should be relative to the source root. Otherwise, |
| path-specific logic may not behave as expected. |
| line_numbers: A list of line numbers of the lines for which |
| style errors should be reported, or None if errors |
| for all lines should be reported. When not None, this |
| list normally contains the line numbers corresponding |
| to the modified lines of a patch. |
| """ |
| _log.debug('Checking style: ' + file_path) |
| |
| style_error_handler = DefaultStyleErrorHandler( |
| configuration=self._configuration, |
| file_path=file_path, |
| increment_error_count=self._increment_error_count, |
| line_numbers=line_numbers) |
| |
| carriage_checker = self._carriage_checker_class(style_error_handler) |
| |
| # Check for and remove trailing carriage returns ("\r"). |
| if self._dispatcher.should_check_and_strip_carriage_returns(file_path): |
| lines = carriage_checker.check(lines) |
| |
| min_confidence = self._configuration.min_confidence |
| checker = self._dispatcher.dispatch(file_path, |
| style_error_handler, |
| min_confidence) |
| |
| if checker is None: |
| raise AssertionError("File should not be checked: '%s'" % file_path) |
| |
| _log.debug('Using class: ' + checker.__class__.__name__) |
| |
| checker.check(lines) |
