dca5682e21
Vim internally moves the cursor to the start column before calling again the omnifunc. Some omnifuncs like the one defined by the LanguageClient-neovim plugin depend on this behavior to compute the list of candidates.
141 lines
5.1 KiB
Python
141 lines
5.1 KiB
Python
# Copyright (C) 2011, 2012, 2013 Google Inc.
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#
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# This file is part of YouCompleteMe.
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#
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# YouCompleteMe is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# YouCompleteMe is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import unicode_literals
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from __future__ import print_function
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from __future__ import division
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from __future__ import absolute_import
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# Not installing aliases from python-future; it's unreliable and slow.
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from builtins import * # noqa
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import vim
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from ycm import vimsupport
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from ycmd import utils
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from ycmd.completers.completer import Completer
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from ycm.client.base_request import BaseRequest
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OMNIFUNC_RETURNED_BAD_VALUE = 'Omnifunc returned bad value to YCM!'
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OMNIFUNC_NOT_LIST = ( 'Omnifunc did not return a list or a dict with a "words" '
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' list when expected.' )
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class OmniCompleter( Completer ):
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def __init__( self, user_options ):
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super( OmniCompleter, self ).__init__( user_options )
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self._omnifunc = None
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def SupportedFiletypes( self ):
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return []
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def ShouldUseCache( self ):
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return bool( self.user_options[ 'cache_omnifunc' ] )
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def ShouldUseNow( self, request_data ):
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self._omnifunc = utils.ToUnicode( vim.eval( '&omnifunc' ) )
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if not self._omnifunc:
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return False
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if self.ShouldUseCache():
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return super( OmniCompleter, self ).ShouldUseNow( request_data )
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return self.ShouldUseNowInner( request_data )
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def ShouldUseNowInner( self, request_data ):
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if request_data[ 'force_semantic' ]:
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return True
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disabled_filetypes = self.user_options[
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'filetype_specific_completion_to_disable' ]
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if not vimsupport.CurrentFiletypesEnabled( disabled_filetypes ):
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return False
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return super( OmniCompleter, self ).ShouldUseNowInner( request_data )
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def ComputeCandidates( self, request_data ):
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if self.ShouldUseCache():
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return super( OmniCompleter, self ).ComputeCandidates( request_data )
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if self.ShouldUseNowInner( request_data ):
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return self.ComputeCandidatesInner( request_data )
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return []
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def ComputeCandidatesInner( self, request_data ):
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if not self._omnifunc:
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return []
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try:
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start_column = vimsupport.GetIntValue( self._omnifunc + '(1,"")' )
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if start_column < 0:
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# FIXME: Technically, if the returned value is -1 we should raise an
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# error.
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return []
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# Use the start column calculated by the omnifunc, rather than our own
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# interpretation. This is important for certain languages where our
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# identifier detection is either incorrect or not compatible with the
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# behaviour of the omnifunc. Note: do this before calling the omnifunc
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# because it affects the value returned by 'query'.
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request_data[ 'start_column' ] = start_column + 1
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# Calling directly the omnifunc may move the cursor position. This is the
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# case with the default Vim omnifunc for C-family languages
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# (ccomplete#Complete) which calls searchdecl to find a declaration. This
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# function is supposed to move the cursor to the found declaration but it
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# doesn't when called through the omni completion mapping (CTRL-X CTRL-O).
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# So, we restore the cursor position after calling the omnifunc.
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line, column = vimsupport.CurrentLineAndColumn()
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# Vim internally moves the cursor to the start column before calling again
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# the omnifunc. Some omnifuncs like the one defined by the
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# LanguageClient-neovim plugin depend on this behavior to compute the list
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# of candidates.
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vimsupport.SetCurrentLineAndColumn( line, start_column )
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omnifunc_call = [ self._omnifunc,
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"(0,'",
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vimsupport.EscapeForVim( request_data[ 'query' ] ),
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"')" ]
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items = vim.eval( ''.join( omnifunc_call ) )
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vimsupport.SetCurrentLineAndColumn( line, column )
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if isinstance( items, dict ) and 'words' in items:
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items = items[ 'words' ]
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if not hasattr( items, '__iter__' ):
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raise TypeError( OMNIFUNC_NOT_LIST )
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return list( filter( bool, items ) )
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except ( TypeError, ValueError, vim.error ) as error:
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vimsupport.PostVimMessage(
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OMNIFUNC_RETURNED_BAD_VALUE + ' ' + str( error ) )
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return []
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def FilterAndSortCandidatesInner( self, candidates, sort_property, query ):
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request_data = {
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'candidates': candidates,
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'sort_property': sort_property,
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'query': query
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}
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response = BaseRequest().PostDataToHandler( request_data,
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'filter_and_sort_candidates' )
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return response if response is not None else []
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