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# Copyright (C) 2016 YouCompleteMe contributors
#
# This file is part of YouCompleteMe.
#
# YouCompleteMe 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 3 of the License, or
# (at your option) any later version.
#
# YouCompleteMe 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 YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
from __future__ import unicode_literals
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import
# Not installing aliases from python-future; it's unreliable and slow.
from builtins import * # noqa
from future.utils import iterkeys, iteritems
from ycm import vimsupport
import re
class DiagnosticFilter( object ):
def __init__( self, config_or_filters ):
if isinstance( config_or_filters, list ):
self._filters = config_or_filters
else:
self._filters = _CompileFilters( config_or_filters )
def IsAllowed( self, diagnostic ):
# NOTE: a diagnostic IsAllowed() ONLY if NO filters match it
for filterMatches in self._filters:
if filterMatches( diagnostic ):
return False
return True
def SubsetForTypes( self, filetypes ):
"""Return a sub-filter limited to the given filetypes"""
# NOTE: actually, this class is already filtered
return self
@staticmethod
def CreateFromOptions( user_options ):
all_filters = user_options[ 'filter_diagnostics' ]
compiled_by_type = {}
for type_spec, filter_value in iteritems( all_filters ):
filetypes = [ type_spec ]
if type_spec.find( ',' ) != -1:
filetypes = type_spec.split( ',' )
for filetype in filetypes:
compiled_by_type[ filetype ] = _CompileFilters( filter_value )
return _MasterDiagnosticFilter( compiled_by_type )
class _MasterDiagnosticFilter( object ):
def __init__( self, all_filters ):
self._all_filters = all_filters
self._cache = {}
def IsAllowed( self, diagnostic ):
# NOTE: in this class's implementation, we ask vimsupport for
# the current filetypes and delegate automatically; it is probably,
# more efficient, however, to call SubsetForTypes() and reuse
# the returned DiagnosticFilter if it will be checked repeatedly.
filetypes = vimsupport.CurrentFiletypes()
return self.SubsetForTypes( filetypes ).IsAllowed( diagnostic )
def SubsetForTypes( self, filetypes ):
# check cache
cache_key = ','.join( filetypes )
cached = self._cache.get( cache_key )
if cached is not None:
return cached
# build a new DiagnosticFilter merging all filters
# for the provided filetypes
spec = []
for filetype in filetypes:
type_specific = self._all_filters.get( filetype, [] )
spec.extend( type_specific )
new_filter = DiagnosticFilter( spec )
self._cache[ cache_key ] = new_filter
return new_filter
def _ListOf( config_entry ):
if isinstance( config_entry, list ):
return config_entry
if config_entry is None:
return []
return [ config_entry ]
def CompileRegex( raw_regex ):
pattern = re.compile( raw_regex, re.IGNORECASE )
def FilterRegex( diagnostic ):
return pattern.search( diagnostic[ 'text' ] ) is not None
return FilterRegex
def CompileLevel( level ):
# valid kinds are WARNING and ERROR;
# expected input levels are `warning` and `error`
# NOTE: we don't validate the input...
expected_kind = level.upper()
def FilterLevel( diagnostic ):
return diagnostic[ 'kind' ] == expected_kind
return FilterLevel
FILTER_COMPILERS = { 'regex' : CompileRegex,
'level' : CompileLevel }
def _CompileFilters( config ):
"""Given a filter config dictionary, return a list of compiled filters"""
filters = []
for filter_type in iterkeys( config ):
compiler = FILTER_COMPILERS.get( filter_type )
if compiler is not None:
for filter_config in _ListOf( config[ filter_type ] ):
compiledFilter = compiler( filter_config )
filters.append( compiledFilter )
return filters
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