95 lines
2.8 KiB
Python
95 lines
2.8 KiB
Python
# Copyright (c) 2009-2010, 2012-2013 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
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# Copyright (c) 2013-2014 Google, Inc.
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# Copyright (c) 2015 Florian Bruhin <me@the-compiler.org>
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# Copyright (c) 2015-2016 Claudiu Popa <pcmanticore@gmail.com>
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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
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"""Interfaces for Pylint objects"""
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from collections import namedtuple
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Confidence = namedtuple('Confidence', ['name', 'description'])
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# Warning Certainties
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HIGH = Confidence('HIGH', 'No false positive possible.')
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INFERENCE = Confidence('INFERENCE', 'Warning based on inference result.')
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INFERENCE_FAILURE = Confidence('INFERENCE_FAILURE',
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'Warning based on inference with failures.')
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UNDEFINED = Confidence('UNDEFINED',
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'Warning without any associated confidence level.')
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CONFIDENCE_LEVELS = [HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED]
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class Interface(object):
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"""Base class for interfaces."""
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@classmethod
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def is_implemented_by(cls, instance):
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return implements(instance, cls)
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def implements(obj, interface):
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"""Return true if the give object (maybe an instance or class) implements
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the interface.
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"""
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kimplements = getattr(obj, '__implements__', ())
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if not isinstance(kimplements, (list, tuple)):
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kimplements = (kimplements,)
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for implementedinterface in kimplements:
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if issubclass(implementedinterface, interface):
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return True
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return False
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class IChecker(Interface):
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"""This is an base interface, not designed to be used elsewhere than for
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sub interfaces definition.
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"""
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def open(self):
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"""called before visiting project (i.e set of modules)"""
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def close(self):
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"""called after visiting project (i.e set of modules)"""
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class IRawChecker(IChecker):
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"""interface for checker which need to parse the raw file
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"""
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def process_module(self, astroid):
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""" process a module
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the module's content is accessible via astroid.stream
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"""
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class ITokenChecker(IChecker):
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"""Interface for checkers that need access to the token list."""
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def process_tokens(self, tokens):
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"""Process a module.
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tokens is a list of all source code tokens in the file.
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"""
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class IAstroidChecker(IChecker):
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""" interface for checker which prefers receive events according to
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statement type
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"""
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class IReporter(Interface):
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""" reporter collect messages and display results encapsulated in a layout
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"""
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def handle_message(self, msg):
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"""Handle the given message object."""
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def display_reports(self, layout):
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"""display results encapsulated in the layout tree
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"""
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__all__ = ('IRawChecker', 'IAstroidChecker', 'ITokenChecker', 'IReporter')
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