Revert "pylint: upgrade to 1.3.1"

third_party/pylint/checkers/__init__.py

-# Copyright (c) 2003-2013 LOGILAB S.A. (Paris, FRANCE).
+# Copyright (c) 2003-2010 LOGILAB S.A. (Paris, FRANCE).
 # http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This program is free software; you can redistribute it and/or modify it under
 # the terms of the GNU General Public License as published by the Free Software
 # Foundation; either version 2 of the License, or (at your option) any later
 # version.
 #
 # This program is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License along with
 # this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 """utilities methods and classes for checkers
 
 Base id of standard checkers (used in msg and report ids):
 01: base
 02: classes
 03: format
 04: import
 05: misc
 06: variables
 07: exceptions
 08: similar
 09: design_analysis
 10: newstyle
 11: typecheck
 12: logging
 13: string_format
-14: string_constant
-15-50: not yet used: reserved for future internal checkers.
+14-50: not yet used: reserved for future internal checkers.
 51-99: perhaps used: reserved for external checkers
 
 The raw_metrics checker has no number associated since it doesn't emit any
 messages nor reports. XXX not true, emit a 07 report !
 
 """
 
-import sys
 import tokenize
-import warnings
+from os import listdir
+from os.path import dirname, join, isdir, splitext
 
+from logilab.astng.utils import ASTWalker
 from logilab.common.configuration import OptionsProviderMixIn
 
-from pylint.reporters import diff_string
-from pylint.utils import register_plugins
+from pylint.reporters import diff_string, EmptyReport
 
 def table_lines_from_stats(stats, old_stats, columns):
     """get values listed in <columns> from <stats> and <old_stats>,
     and return a formated list of values, designed to be given to a
     ureport.Table object
     """
     lines = []
     for m_type in columns:
         new = stats[m_type]
         format = str
         if isinstance(new, float):
             format = lambda num: '%.3f' % num
         old = old_stats.get(m_type)
         if old is not None:
             diff_str = diff_string(old, new)
             old = format(old)
         else:
             old, diff_str = 'NC', 'NC'
         lines += (m_type.replace('_', ' '), format(new), old, diff_str)
     return lines
 
 
-class BaseChecker(OptionsProviderMixIn):
+class BaseChecker(OptionsProviderMixIn, ASTWalker):
     """base class for checkers"""
     # checker name (you may reuse an existing one)
     name = None
     # options level (0 will be displaying in --help, 1 in --long-help)
     level = 1
     # ordered list of options to control the ckecker behaviour
     options = ()
     # messages issued by this checker
     msgs = {}
     # reports issued by this checker
     reports = ()
 
     def __init__(self, linter=None):
         """checker instances should have the linter as argument
 
         linter is an object implementing ILinter
         """
+        ASTWalker.__init__(self, self)
         self.name = self.name.lower()
         OptionsProviderMixIn.__init__(self)
         self.linter = linter
+        # messages that are active for the current check
+        self.active_msgs = set()
 
     def add_message(self, msg_id, line=None, node=None, args=None):
         """add a message of a given type"""
         self.linter.add_message(msg_id, line, node, args)
 
+    def package_dir(self):
+        """return the base directory for the analysed package"""
+        return dirname(self.linter.base_file)
+
+
     # dummy methods implementing the IChecker interface
 
     def open(self):
         """called before visiting project (i.e set of modules)"""
 
     def close(self):
         """called after visiting project (i.e set of modules)"""
 
-
 class BaseRawChecker(BaseChecker):
     """base class for raw checkers"""
 
     def process_module(self, node):
         """process a module
 
         the module's content is accessible via the stream object
 
         stream must implement the readline method
         """
-        warnings.warn("Modules that need access to the tokens should "
-                      "use the ITokenChecker interface.",
-                      DeprecationWarning)
         stream = node.file_stream
-        stream.seek(0) # XXX may be removed with astroid > 0.23
-        if sys.version_info <= (3, 0):
-            self.process_tokens(tokenize.generate_tokens(stream.readline))
-        else:
-            self.process_tokens(tokenize.tokenize(stream.readline))
+        stream.seek(0) # XXX may be removed with astng > 0.23
+        self.process_tokens(tokenize.generate_tokens(stream.readline))
 
     def process_tokens(self, tokens):
         """should be overridden by subclasses"""
         raise NotImplementedError()
 
 
-class BaseTokenChecker(BaseChecker):
-    """Base class for checkers that want to have access to the token stream."""
-
-    def process_tokens(self, tokens):
-        """Should be overridden by subclasses."""
-        raise NotImplementedError()
-
+PY_EXTS = ('.py', '.pyc', '.pyo', '.pyw', '.so', '.dll')
 
 def initialize(linter):
     """initialize linter with checkers in this package """
-    register_plugins(linter, __path__[0])
+    package_load(linter, __path__[0])
 
-__all__ = ('BaseChecker', 'initialize')
+def package_load(linter, directory):
+    """load all module and package in the given directory, looking for a
+    'register' function in each one, used to register pylint checkers
+    """
+    globs = globals()
+    imported = {}
+    for filename in listdir(directory):
+        basename, extension = splitext(filename)
+        if basename in imported or basename == '__pycache__':
+            continue
+        if extension in PY_EXTS and basename != '__init__' or (
+             not extension and basename != 'CVS' and
+             isdir(join(directory, basename))):
+            try:
+                module = __import__(basename, globs, globs, None)
+            except ValueError:
+                # empty module name (usually emacs auto-save files)
+                continue
+            except ImportError, exc:
+                import sys
+                print >> sys.stderr, "Problem importing module %s: %s" % (filename, exc)
+            else:
+                if hasattr(module, 'register'):
+                    module.register(linter)
+                    imported[basename] = 1
+
+__all__ = ('CheckerHandler', 'BaseChecker', 'initialize', 'package_load')