Remove closure_linter from Chrome

third_party/closure_linter/closure_linter/checkerbase.py

-#!/usr/bin/env python
-#
-# Copyright 2008 The Closure Linter Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS-IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Base classes for writing checkers that operate on tokens."""
-
-# Allow non-Google copyright
-# pylint: disable=g-bad-file-header
-
-__author__ = ('robbyw@google.com (Robert Walker)',
-              'ajp@google.com (Andy Perelson)',
-              'jacobr@google.com (Jacob Richman)')
-
-from closure_linter import errorrules
-from closure_linter.common import error
-
-
-class LintRulesBase(object):
-  """Base class for all classes defining the lint rules for a language."""
-
-  def __init__(self):
-    self.__checker = None
-
-  def Initialize(self, checker, limited_doc_checks, is_html):
-    """Initializes to prepare to check a file.
-
-    Args:
-      checker: Class to report errors to.
-      limited_doc_checks: Whether doc checking is relaxed for this file.
-      is_html: Whether the file is an HTML file with extracted contents.
-    """
-    self.__checker = checker
-    self._limited_doc_checks = limited_doc_checks
-    self._is_html = is_html
-
-  def _HandleError(self, code, message, token, position=None,
-                   fix_data=None):
-    """Call the HandleError function for the checker we are associated with."""
-    if errorrules.ShouldReportError(code):
-      self.__checker.HandleError(code, message, token, position, fix_data)
-
-  def _SetLimitedDocChecks(self, limited_doc_checks):
-    """Sets whether doc checking is relaxed for this file.
-
-    Args:
-      limited_doc_checks: Whether doc checking is relaxed for this file.
-    """
-    self._limited_doc_checks = limited_doc_checks
-
-  def CheckToken(self, token, parser_state):
-    """Checks a token, given the current parser_state, for warnings and errors.
-
-    Args:
-      token: The current token under consideration.
-      parser_state: Object that indicates the parser state in the page.
-
-    Raises:
-      TypeError: If not overridden.
-    """
-    raise TypeError('Abstract method CheckToken not implemented')
-
-  def Finalize(self, parser_state):
-    """Perform all checks that need to occur after all lines are processed.
-
-    Args:
-      parser_state: State of the parser after parsing all tokens
-
-    Raises:
-      TypeError: If not overridden.
-    """
-    raise TypeError('Abstract method Finalize not implemented')
-
-
-class CheckerBase(object):
-  """This class handles checking a LintRules object against a file."""
-
-  def __init__(self, error_handler, lint_rules, state_tracker):
-    """Initialize a checker object.
-
-    Args:
-      error_handler: Object that handles errors.
-      lint_rules: LintRules object defining lint errors given a token
-        and state_tracker object.
-      state_tracker: Object that tracks the current state in the token stream.
-
-    """
-    self._error_handler = error_handler
-    self._lint_rules = lint_rules
-    self._state_tracker = state_tracker
-
-    self._has_errors = False
-
-  def HandleError(self, code, message, token, position=None,
-                  fix_data=None):
-    """Prints out the given error message including a line number.
-
-    Args:
-      code: The error code.
-      message: The error to print.
-      token: The token where the error occurred, or None if it was a file-wide
-          issue.
-      position: The position of the error, defaults to None.
-      fix_data: Metadata used for fixing the error.
-    """
-    self._has_errors = True
-    self._error_handler.HandleError(
-        error.Error(code, message, token, position, fix_data))
-
-  def HasErrors(self):
-    """Returns true if the style checker has found any errors.
-
-    Returns:
-      True if the style checker has found any errors.
-    """
-    return self._has_errors
-
-  def Check(self, start_token, limited_doc_checks=False, is_html=False,
-            stop_token=None):
-    """Checks a token stream, reporting errors to the error reporter.
-
-    Args:
-      start_token: First token in token stream.
-      limited_doc_checks: Whether doc checking is relaxed for this file.
-      is_html: Whether the file being checked is an HTML file with extracted
-          contents.
-      stop_token: If given, check should stop at this token.
-    """
-
-    self._lint_rules.Initialize(self, limited_doc_checks, is_html)
-    self._ExecutePass(start_token, self._LintPass, stop_token=stop_token)
-    self._lint_rules.Finalize(self._state_tracker)
-
-  def _LintPass(self, token):
-    """Checks an individual token for lint warnings/errors.
-
-    Used to encapsulate the logic needed to check an individual token so that it
-    can be passed to _ExecutePass.
-
-    Args:
-      token: The token to check.
-    """
-    self._lint_rules.CheckToken(token, self._state_tracker)
-
-  def _ExecutePass(self, token, pass_function, stop_token=None):
-    """Calls the given function for every token in the given token stream.
-
-    As each token is passed to the given function, state is kept up to date and,
-    depending on the error_trace flag, errors are either caught and reported, or
-    allowed to bubble up so developers can see the full stack trace. If a parse
-    error is specified, the pass will proceed as normal until the token causing
-    the parse error is reached.
-
-    Args:
-      token: The first token in the token stream.
-      pass_function: The function to call for each token in the token stream.
-      stop_token: The last token to check (if given).
-
-    Raises:
-      Exception: If any error occurred while calling the given function.
-    """
-
-    self._state_tracker.Reset()
-    while token:
-      # When we are looking at a token and decided to delete the whole line, we
-      # will delete all of them in the "HandleToken()" below.  So the current
-      # token and subsequent ones may already be deleted here.  The way we
-      # delete a token does not wipe out the previous and next pointers of the
-      # deleted token.  So we need to check the token itself to make sure it is
-      # not deleted.
-      if not token.is_deleted:
-        # End the pass at the stop token
-        if stop_token and token is stop_token:
-          return
-
-        self._state_tracker.HandleToken(
-            token, self._state_tracker.GetLastNonSpaceToken())
-        pass_function(token)
-        self._state_tracker.HandleAfterToken(token)
-
-      token = token.next