A (barely) working version of ycmd + client

Still a lot of work to do.

autoload/youcompleteme.vim

@@ -539,11 +539,6 @@ function! youcompleteme#Complete( findstart, base )
     endif
 
     py request = ycm_state.CreateCompletionRequest()
-    if !pyeval( 'request.ShouldComplete()' )
-      " for vim, -2 means not found but don't trigger an error message
-      " see :h complete-functions
-      return -2
-    endif
     return pyeval( 'request.CompletionStartColumn()' )
   else
     return s:CompletionsForQuery( a:base )
@@ -628,14 +623,15 @@ function! youcompleteme#OpenGoToList()
 endfunction
 
 
-command! -nargs=* -complete=custom,youcompleteme#SubCommandsComplete
-  \ YcmCompleter call s:CompleterCommand(<f-args>)
-
-
-function! youcompleteme#SubCommandsComplete( arglead, cmdline, cursorpos )
-  return join( pyeval( 'ycm_state.GetFiletypeCompleter().DefinedSubcommands()' ),
-    \ "\n")
-endfunction
+" TODO: Make this work again
+" command! -nargs=* -complete=custom,youcompleteme#SubCommandsComplete
+"   \ YcmCompleter call s:CompleterCommand(<f-args>)
+"
+"
+" function! youcompleteme#SubCommandsComplete( arglead, cmdline, cursorpos )
+"   return join( pyeval( 'ycm_state.GetFiletypeCompleter().DefinedSubcommands()' ),
+"     \ "\n")
+" endfunction
 
 
 function! s:ForceCompile()

cpp/ycm/tests/IdentifierCompleter_test.cpp

@@ -217,6 +217,18 @@ TEST( IdentifierCompleterTest, ShorterAndLowercaseWins ) {
                             "STDIN_FILENO" ) );
 }
 
+TEST( IdentifierCompleterTest, AddIdentifiersToDatabaseFromBufferWorks ) {
+  IdentifierCompleter completer;
+  completer.AddIdentifiersToDatabaseFromBuffer( "foo foogoo ba",
+                                                "foo",
+                                                "/foo/bar",
+                                                false );
+
+  EXPECT_THAT( completer.CandidatesForQueryAndType( "oo", "foo" ),
+               ElementsAre( "foo",
+                            "foogoo" ) );
+}
+
 TEST( IdentifierCompleterTest, TagsEndToEndWorks ) {
   IdentifierCompleter completer;
   std::vector< std::string > tag_files;

python/ycm/client/base_request.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2013  Strahinja Val Markovic  <val@markovic.io>
+#
+# 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/>.
+
+import vim
+import json
+import requests
+from ycm import vimsupport
+
+HEADERS = {'content-type': 'application/json'}
+
+class BaseRequest( object ):
+  def __init__( self ):
+    pass
+
+
+  def Start( self ):
+    pass
+
+
+  def Done( self ):
+    return True
+
+
+  def Response( self ):
+    return {}
+
+
+  def PostDataToHandler( self, data, handler ):
+    response = requests.post( _BuildUri( handler ),
+                             data = json.dumps( data ),
+                             headers = HEADERS )
+    response.raise_for_status()
+    if response.text:
+      return response.json()
+    return None
+
+  server_location = 'http://localhost:6666'
+
+
+def BuildRequestData( start_column = None, query = None ):
+  line, column = vimsupport.CurrentLineAndColumn()
+  request_data = {
+    'filetypes': vimsupport.CurrentFiletypes(),
+    'line_num': line,
+    'column_num': column,
+    'start_column': start_column,
+    'line_value': vim.current.line,
+    'filepath': vim.current.buffer.name,
+    'file_data': vimsupport.GetUnsavedAndCurrentBufferData()
+  }
+
+  if query:
+    request_data[ 'query' ] = query
+
+  return request_data
+
+
+def _BuildUri( handler ):
+  return ''.join( [ BaseRequest.server_location, '/', handler ] )
+
+

python/ycm/client/command_request.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2013  Strahinja Val Markovic  <val@markovic.io>
+#
+# 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 ycm.client.base_request import BaseRequest, BuildRequestData
+
+
+class CommandRequest( BaseRequest ):
+  class ServerResponse( object ):
+    def __init__( self ):
+      pass
+
+    def Valid( self ):
+      return True
+
+  def __init__( self, arguments, completer_target = None ):
+    super( CommandRequest, self ).__init__()
+    self._arguments = arguments
+    self._completer_target = ( completer_target if completer_target
+                               else 'filetype_default' )
+    # TODO: Handle this case.
+    # if completer_target == 'omni':
+    #   completer = SERVER_STATE.GetOmniCompleter()
+
+  def Start( self ):
+    request_data = BuildRequestData()
+    request_data.update( {
+      'completer_target': self._completer_target,
+      'command_arguments': self._arguments
+    } )
+    self._response = self.PostDataToHandler( request_data,
+                                             'run_completer_command' )
+
+
+  def Response( self ):
+    # TODO: Call vimsupport.JumpToLocation if the user called a GoTo command...
+    # we may want to have specific subclasses of CommandRequest so that a
+    # GoToRequest knows it needs to jump after the data comes back.
+    #
+    # Also need to run the following on GoTo data:
+    #
+    # CAREFUL about line/column number 0-based/1-based confusion!
+    #
+    # defs = []
+    # defs.append( {'filename': definition.module_path.encode( 'utf-8' ),
+    #               'lnum': definition.line,
+    #               'col': definition.column + 1,
+    #               'text': definition.description.encode( 'utf-8' ) } )
+    # vim.eval( 'setqflist( %s )' % repr( defs ) )
+    # vim.eval( 'youcompleteme#OpenGoToList()' )
+    return self.ServerResponse()
+

python/ycm/client/completion_request.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2013  Strahinja Val Markovic  <val@markovic.io>
+#
+# 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 ycm import base
+from ycm import vimsupport
+from ycm.client.base_request import BaseRequest, BuildRequestData
+
+
+class CompletionRequest( BaseRequest ):
+  def __init__( self ):
+    super( CompletionRequest, self ).__init__()
+
+    self._completion_start_column = base.CompletionStartColumn()
+    self._request_data = BuildRequestData( self._completion_start_column )
+
+
+  # def ShouldComplete( self ):
+  #   return ( self._do_filetype_completion or
+  #            self._ycm_state.ShouldUseGeneralCompleter( self._request_data ) )
+
+
+  def CompletionStartColumn( self ):
+    return self._completion_start_column
+
+
+  def Start( self, query ):
+    self._request_data[ 'query' ] = query
+    self._response = self.PostDataToHandler( self._request_data,
+                                             'get_completions' )
+
+
+  def Results( self ):
+    if not self._response:
+      return []
+    try:
+      return [ _ConvertCompletionDataToVimData( x ) for x in self._response ]
+    except Exception as e:
+      vimsupport.PostVimMessage( str( e ) )
+      return []
+
+
+def _ConvertCompletionDataToVimData( completion_data ):
+  # see :h complete-items for a description of the dictionary fields
+  vim_data = {
+    'word' : completion_data[ 'insertion_text' ],
+    'dup'  : 1,
+  }
+
+  if 'menu_text' in completion_data:
+    vim_data[ 'abbr' ] = completion_data[ 'menu_text' ]
+  if 'extra_menu_info' in completion_data:
+    vim_data[ 'menu' ] = completion_data[ 'extra_menu_info' ]
+  if 'kind' in completion_data:
+    vim_data[ 'kind' ] = completion_data[ 'kind' ]
+  if 'detailed_info' in completion_data:
+    vim_data[ 'info' ] = completion_data[ 'detailed_info' ]
+
+  return vim_data

python/ycm/client/event_notification.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2013  Strahinja Val Markovic  <val@markovic.io>
+#
+# 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 ycm.client.base_request import BaseRequest, BuildRequestData
+
+
+class EventNotification( BaseRequest ):
+  def __init__( self, event_name, extra_data = None ):
+    super( EventNotification, self ).__init__()
+    self._event_name = event_name
+    self._extra_data = extra_data
+
+
+  def Start( self ):
+    request_data = BuildRequestData()
+    if self._extra_data:
+      request_data.update( self._extra_data )
+    request_data[ 'event_name' ] = self._event_name
+
+    self.PostDataToHandler( request_data, 'event_notification' )
+
+
+def SendEventNotificationAsync( event_name, extra_data = None ):
+  event = EventNotification( event_name, extra_data )
+  event.Start()
+

python/ycm/completers/all/identifier_completer.py

@@ -18,12 +18,14 @@
 # along with YouCompleteMe.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import logging
 import ycm_core
 from collections import defaultdict
 from ycm.completers.general_completer import GeneralCompleter
 # from ycm.completers.general import syntax_parse
 from ycm import utils
-from ycm import server_responses
+from ycm.utils import ToUtf8IfNeeded
+from ycm.server import responses
 
 MAX_IDENTIFIER_COMPLETIONS_RETURNED = 10
 SYNTAX_FILENAME = 'YCM_PLACEHOLDER_FOR_SYNTAX'
@@ -36,6 +38,7 @@ class IdentifierCompleter( GeneralCompleter ):
     self.completer.EnableThreading()
     self.tags_file_last_mtime = defaultdict( int )
     self.filetypes_with_keywords_loaded = set()
+    self._logger = logging.getLogger( __name__ )
 
 
   def ShouldUseNow( self, request_data ):
@@ -44,8 +47,8 @@ class IdentifierCompleter( GeneralCompleter ):
 
   def CandidatesForQueryAsync( self, request_data ):
     self.completions_future = self.completer.CandidatesForQueryAndTypeAsync(
-      utils.SanitizeQuery( request_data[ 'query' ] ),
-      request_data[ 'filetypes' ][ 0 ] )
+      ToUtf8IfNeeded( utils.SanitizeQuery( request_data[ 'query' ] ) ),
+      ToUtf8IfNeeded( request_data[ 'filetypes' ][ 0 ] ) )
 
 
   def AddIdentifier( self, identifier, request_data ):
@@ -56,10 +59,11 @@ class IdentifierCompleter( GeneralCompleter ):
       return
 
     vector = ycm_core.StringVec()
-    vector.append( identifier )
+    vector.append( ToUtf8IfNeeded( identifier ) )
+    self._logger.info( 'Adding ONE buffer identifier for file: %s', filepath )
     self.completer.AddIdentifiersToDatabase( vector,
-                                             filetype,
-                                             filepath )
+                                             ToUtf8IfNeeded( filetype ),
+                                             ToUtf8IfNeeded( filepath ) )
 
 
   def AddPreviousIdentifier( self, request_data ):
@@ -88,10 +92,11 @@ class IdentifierCompleter( GeneralCompleter ):
       return
 
     text = request_data[ 'file_data' ][ filepath ][ 'contents' ]
+    self._logger.info( 'Adding buffer identifiers for file: %s', filepath )
     self.completer.AddIdentifiersToDatabaseFromBufferAsync(
-      text,
-      filetype,
-      filepath,
+      ToUtf8IfNeeded( text ),
+      ToUtf8IfNeeded( filetype ),
+      ToUtf8IfNeeded( filepath ),
       collect_from_comments_and_strings )
 
 
@@ -110,7 +115,7 @@ class IdentifierCompleter( GeneralCompleter ):
         continue
 
       self.tags_file_last_mtime[ tag_file ] = current_mtime
-      absolute_paths_to_tag_files.append( tag_file )
+      absolute_paths_to_tag_files.append( ToUtf8IfNeeded( tag_file ) )
 
     if not absolute_paths_to_tag_files:
       return
@@ -161,7 +166,7 @@ class IdentifierCompleter( GeneralCompleter ):
     completions = _RemoveSmallCandidates(
       completions, self.user_options[ 'min_num_identifier_candidate_chars' ] )
 
-    return [ server_responses.BuildCompletionData( x ) for x in completions ]
+    return [ responses.BuildCompletionData( x ) for x in completions ]
 
 
 def _PreviousIdentifier( min_num_completion_start_chars, request_data ):

python/ycm/completers/cpp/clang_completer.py

@@ -20,7 +20,7 @@
 from collections import defaultdict
 import ycm_core
 import logging
-from ycm import server_responses
+from ycm.server import responses
 from ycm import extra_conf_store
 from ycm.utils import ToUtf8IfNeeded
 from ycm.completers.completer import Completer
@@ -72,9 +72,10 @@ class ClangCompleter( Completer ):
         continue
 
       unsaved_file = ycm_core.UnsavedFile()
-      unsaved_file.contents_ = contents
-      unsaved_file.length_ = len( contents )
-      unsaved_file.filename_ = filename
+      utf8_contents = ToUtf8IfNeeded( contents )
+      unsaved_file.contents_ = utf8_contents
+      unsaved_file.length_ = len( utf8_contents )
+      unsaved_file.filename_ = ToUtf8IfNeeded( filename )
 
       files.append( unsaved_file )
     return files
@@ -86,17 +87,17 @@ class ClangCompleter( Completer ):
     if not filename:
       return
 
-    if self.completer.UpdatingTranslationUnit( filename ):
+    if self.completer.UpdatingTranslationUnit( ToUtf8IfNeeded( filename ) ):
       self.completions_future = None
       self._logger.info( PARSING_FILE_MESSAGE )
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         PARSING_FILE_MESSAGE )
 
     flags = self.flags.FlagsForFile( filename )
     if not flags:
       self.completions_future = None
       self._logger.info( NO_COMPILE_FLAGS_MESSAGE )
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         NO_COMPILE_FLAGS_MESSAGE )
 
     # TODO: sanitize query, probably in C++ code
@@ -142,11 +143,11 @@ class ClangCompleter( Completer ):
 
     command = arguments[ 0 ]
     if command == 'GoToDefinition':
-      self._GoToDefinition( request_data )
+      return self._GoToDefinition( request_data )
     elif command == 'GoToDeclaration':
-      self._GoToDeclaration( request_data )
+      return self._GoToDeclaration( request_data )
     elif command == 'GoToDefinitionElseDeclaration':
-      self._GoToDefinitionElseDeclaration( request_data )
+      return self._GoToDefinitionElseDeclaration( request_data )
     elif command == 'ClearCompilationFlagCache':
       self._ClearCompilationFlagCache( request_data )
 
@@ -155,20 +156,20 @@ class ClangCompleter( Completer ):
     filename = request_data[ 'filepath' ]
     if not filename:
       self._logger.warning( INVALID_FILE_MESSAGE )
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         INVALID_FILE_MESSAGE )
 
     flags = self.flags.FlagsForFile( filename )
     if not flags:
       self._logger.info( NO_COMPILE_FLAGS_MESSAGE )
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         NO_COMPILE_FLAGS_MESSAGE )
 
-    files = self.GetUnsavedFilesVector()
+    files = self.GetUnsavedFilesVector( request_data )
     line = request_data[ 'line_num' ] + 1
     column = request_data[ 'start_column' ] + 1
     return getattr( self.completer, goto_function )(
-        filename,
+        ToUtf8IfNeeded( filename ),
         line,
         column,
         files,
@@ -180,7 +181,7 @@ class ClangCompleter( Completer ):
     if not location or not location.IsValid():
       raise RuntimeError( 'Can\'t jump to definition.' )
 
-    return server_responses.BuildGoToResponse( location.filename_,
+    return responses.BuildGoToResponse( location.filename_,
                                         location.line_number_,
                                         location.column_number_ )
 
@@ -190,7 +191,7 @@ class ClangCompleter( Completer ):
     if not location or not location.IsValid():
       raise RuntimeError( 'Can\'t jump to declaration.' )
 
-    return server_responses.BuildGoToResponse( location.filename_,
+    return responses.BuildGoToResponse( location.filename_,
                                         location.line_number_,
                                         location.column_number_ )
 
@@ -202,7 +203,7 @@ class ClangCompleter( Completer ):
     if not location or not location.IsValid():
       raise RuntimeError( 'Can\'t jump to definition or declaration.' )
 
-    return server_responses.BuildGoToResponse( location.filename_,
+    return responses.BuildGoToResponse( location.filename_,
                                         location.line_number_,
                                         location.column_number_ )
 
@@ -223,10 +224,10 @@ class ClangCompleter( Completer ):
 
     if not filename:
       self._logger.warning( INVALID_FILE_MESSAGE )
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         INVALID_FILE_MESSAGE )
 
-    if self.completer.UpdatingTranslationUnit( filename ):
+    if self.completer.UpdatingTranslationUnit( ToUtf8IfNeeded( filename ) ):
       self.extra_parse_desired = True
       return
 
@@ -234,11 +235,11 @@ class ClangCompleter( Completer ):
     if not flags:
       self.parse_future = None
       self._logger.info( NO_COMPILE_FLAGS_MESSAGE )
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         NO_COMPILE_FLAGS_MESSAGE )
 
     self.parse_future = self.completer.UpdateTranslationUnitAsync(
-      filename,
+      ToUtf8IfNeeded( filename ),
       self.GetUnsavedFilesVector( request_data ),
       flags )
 
@@ -246,7 +247,8 @@ class ClangCompleter( Completer ):
 
 
   def OnBufferUnload( self, request_data ):
-    self.completer.DeleteCachesForFileAsync( request_data[ 'unloaded_buffer' ] )
+    self.completer.DeleteCachesForFileAsync(
+        ToUtf8IfNeeded( request_data[ 'unloaded_buffer' ] ) )
 
 
   def DiagnosticsForCurrentFileReady( self ):
@@ -257,16 +259,18 @@ class ClangCompleter( Completer ):
 
 
   def GettingCompletions( self, request_data ):
-    return self.completer.UpdatingTranslationUnit( request_data[ 'filepath' ] )
+    return self.completer.UpdatingTranslationUnit(
+        ToUtf8IfNeeded( request_data[ 'filepath' ] ) )
 
 
   def GetDiagnosticsForCurrentFile( self, request_data ):
     filename = request_data[ 'filepath' ]
     if self.DiagnosticsForCurrentFileReady():
-      diagnostics = self.completer.DiagnosticsForFile( filename )
+      diagnostics = self.completer.DiagnosticsForFile(
+          ToUtf8IfNeeded( filename ) )
       self.diagnostic_store = DiagnosticsToDiagStructure( diagnostics )
       self.last_prepared_diagnostics = [
-        server_responses.BuildDiagnosticData( x ) for x in
+        responses.BuildDiagnosticData( x ) for x in
         diagnostics[ : self.max_diagnostics_to_display ] ]
       self.parse_future = None
 
@@ -282,12 +286,12 @@ class ClangCompleter( Completer ):
     current_file = request_data[ 'filepath' ]
 
     if not self.diagnostic_store:
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         NO_DIAGNOSTIC_MESSAGE )
 
     diagnostics = self.diagnostic_store[ current_file ][ current_line ]
     if not diagnostics:
-      return server_responses.BuildDisplayMessageResponse(
+      return responses.BuildDisplayMessageResponse(
         NO_DIAGNOSTIC_MESSAGE )
 
     closest_diagnostic = None
@@ -299,7 +303,7 @@ class ClangCompleter( Completer ):
         distance_to_closest_diagnostic = distance
         closest_diagnostic = diagnostic
 
-    return server_responses.BuildDisplayMessageResponse(
+    return responses.BuildDisplayMessageResponse(
       closest_diagnostic.long_formatted_text_ )
 
 
@@ -314,7 +318,7 @@ class ClangCompleter( Completer ):
       return ''
     flags = self.flags.FlagsForFile( filename ) or []
     source = extra_conf_store.ModuleFileForSourceFile( filename )
-    return server_responses.BuildDisplayMessageResponse(
+    return responses.BuildDisplayMessageResponse(
       'Flags for {0} loaded from {1}:\n{2}'.format( filename,
                                                     source,
                                                     list( flags ) ) )
@@ -348,7 +352,7 @@ class ClangCompleter( Completer ):
 
 
 def ConvertCompletionData( completion_data ):
-  return server_responses.BuildCompletionData(
+  return responses.BuildCompletionData(
     insertion_text = completion_data.TextToInsertInBuffer(),
     menu_text = completion_data.MainCompletionText(),
     extra_menu_info = completion_data.ExtraMenuInfo(),

python/ycm/completers/cs/cs_completer.py

@@ -22,13 +22,13 @@ import os
 from sys import platform
 import glob
 from ycm.completers.threaded_completer import ThreadedCompleter
-from ycm import server_responses
+from ycm.server import responses
+from ycm import utils
 import urllib2
 import urllib
 import urlparse
 import json
 import subprocess
-import tempfile
 import logging
 
 
@@ -44,7 +44,7 @@ class CsharpCompleter( ThreadedCompleter ):
   def __init__( self, user_options ):
     super( CsharpCompleter, self ).__init__( user_options )
     self._omnisharp_port = None
-    self._logger = logging.getLogger(__name__)
+    self._logger = logging.getLogger( __name__ )
 
     # if self.user_options[ 'auto_start_csharp_server' ]:
     #   self._StartServer()
@@ -62,7 +62,7 @@ class CsharpCompleter( ThreadedCompleter ):
 
 
   def ComputeCandidates( self, request_data ):
-    return [ server_responses.BuildCompletionData(
+    return [ responses.BuildCompletionData(
                 completion[ 'CompletionText' ],
                 completion[ 'DisplayText' ],
                 completion[ 'Description' ] )
@@ -135,8 +135,8 @@ class CsharpCompleter( ThreadedCompleter ):
     command = [ omnisharp + ' -p ' + str( self._omnisharp_port ) + ' -s ' +
                 path_to_solutionfile ]
 
-    filename_format = ( tempfile.gettempdir() +
-                        '/omnisharp_{port}_{sln}_{std}.log' )
+    filename_format = os.path.join( utils.PathToTempDir(),
+                                   'omnisharp_{port}_{sln}_{std}.log' )
 
     self._filename_stdout = filename_format.format(
         port=self._omnisharp_port, sln=solutionfile, std='stdout' )
@@ -169,7 +169,7 @@ class CsharpCompleter( ThreadedCompleter ):
     definition = self._GetResponse( '/gotodefinition',
                                     self._DefaultParameters( request_data ) )
     if definition[ 'FileName' ] != None:
-      return server_responses.BuildGoToResponse( definition[ 'FileName' ],
+      return responses.BuildGoToResponse( definition[ 'FileName' ],
                                           definition[ 'Line' ],
                                           definition[ 'Column' ] )
     else:

python/ycm/completers/general/filename_completer.py

@@ -22,7 +22,7 @@ import re
 from ycm.completers.threaded_completer import ThreadedCompleter
 from ycm.completers.cpp.clang_completer import InCFamilyFile
 from ycm.completers.cpp.flags import Flags
-from ycm import server_responses
+from ycm.server import responses
 
 class FilenameCompleter( ThreadedCompleter ):
   """
@@ -146,7 +146,7 @@ def _GenerateCandidatesForPaths( absolute_paths ):
 
     is_dir = os.path.isdir( absolute_path )
     completion_dicts.append(
-      server_responses.BuildCompletionData( basename,
+      responses.BuildCompletionData( basename,
                                      '[Dir]' if is_dir else '[File]' ) )
 
   return completion_dicts

python/ycm/completers/general/ultisnips_completer.py

@@ -20,7 +20,7 @@
 
 from ycm.completers.general_completer import GeneralCompleter
 from UltiSnips import UltiSnips_Manager
-from ycm import server_responses
+from ycm.server import responses
 
 
 class UltiSnipsCompleter( GeneralCompleter ):
@@ -64,7 +64,7 @@ def _GetCandidates():
     # UltiSnips_Manager._snips() returns a class instance where:
     # class.trigger - name of snippet trigger word ( e.g. defn or testcase )
     # class.description - description of the snippet
-    return [ server_responses.BuildCompletionData(
+    return [ responses.BuildCompletionData(
               str( snip.trigger ),
               str( '<snip> ' + snip.description.encode( 'utf-8' ) ) )
             for snip in rawsnips ]

python/ycm/completers/python/jedi_completer.py

@@ -20,7 +20,7 @@
 # along with YouCompleteMe.  If not, see <http://www.gnu.org/licenses/>.
 
 from ycm.completers.threaded_completer import ThreadedCompleter
-from ycm import server_responses
+from ycm.server import responses
 
 import sys
 from os.path import join, abspath, dirname
@@ -65,7 +65,7 @@ class JediCompleter( ThreadedCompleter ):
 
   def ComputeCandidates( self, request_data ):
     script = self._GetJediScript( request_data )
-    return [ server_responses.BuildCompletionData(
+    return [ responses.BuildCompletionData(
                 str( completion.name ),
                 str( completion.description ),
                 str( completion.doc ) )
@@ -140,7 +140,7 @@ class JediCompleter( ThreadedCompleter ):
         else:
           raise RuntimeError( 'Builtin modules cannot be displayed.' )
       else:
-        return server_responses.BuildGoToResponse( definition.module_path,
+        return responses.BuildGoToResponse( definition.module_path,
                                             definition.line -1,
                                             definition.column )
     else:
@@ -148,11 +148,11 @@ class JediCompleter( ThreadedCompleter ):
       defs = []
       for definition in definition_list:
         if definition.in_builtin_module():
-          defs.append( server_responses.BuildDescriptionOnlyGoToResponse(
+          defs.append( responses.BuildDescriptionOnlyGoToResponse(
                        'Builting ' + definition.description ) )
         else:
           defs.append(
-            server_responses.BuildGoToResponse( definition.module_path,
+            responses.BuildGoToResponse( definition.module_path,
                                          definition.line -1,
                                          definition.column,
                                          definition.description ) )

python/ycm/server/default_settings.json

@@ -0,0 +1 @@
+{
  "filepath_completion_use_working_dir": 0,
  "min_num_of_chars_for_completion": 2,
  "semantic_triggers": {},
  "collect_identifiers_from_comments_and_strings": 0,
  "filetype_specific_completion_to_disable": {},
  "collect_identifiers_from_tags_files": 0,
  "extra_conf_globlist": [
    "~\/repos\/*",
    "\/home\/strahinja\/googrepos\/*",
    "~\/local_googrepos\/*",
    "~\/.ycm_extra_conf.py"
  ],
  "global_ycm_extra_conf": "\/usr\/lib\/youcompleteme\/ycm_extra_conf.py",
  "confirm_extra_conf": 1,
  "complete_in_comments": 0,
  "complete_in_strings": 1,
  "min_num_identifier_candidate_chars": 0,
  "max_diagnostics_to_display": 30,
  "auto_stop_csharp_server": 1,
  "seed_identifiers_with_syntax": 0,
  "csharp_server_port": 2000,
  "filetype_whitelist": {
    "*": "1"
  },
  "auto_start_csharp_server": 1,
  "filetype_blacklist": {
    "tagbar": "1",
    "notes": "1",
    "markdown": "1",
    "unite": "1",
    "text": "1"
  }
}

python/ycm/server/responses.py

@@ -18,6 +18,8 @@
 # along with YouCompleteMe.  If not, see <http://www.gnu.org/licenses/>.
 
 
+# TODO: Move this file under server/ and rename it responses.py
+
 def BuildGoToResponse( filepath, line_num, column_num, description = None ):
   response = {
     'filepath': filepath,

python/ycm/server/server.py

@@ -0,0 +1,168 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2013  Strahinja Val Markovic  <val@markovic.io>
+#
+# 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/>.
+
+import sys
+import os
+
+# We want to have the YouCompleteMe/python directory on the Python PATH because
+# all the code already assumes that it's there. This is a relic from before the
+# client/server architecture.
+# TODO: Fix things so that this is not needed anymore when we split ycmd into a
+# separate repository.
+sys.path.insert( 0, os.path.join(
+                        os.path.dirname( os.path.abspath( __file__ ) ),
+                        '../..' ) )
+
+import logging
+import time
+import httplib
+import json
+import bottle
+from bottle import run, request, response
+import server_state
+from ycm import extra_conf_store
+from ycm import user_options_store
+import argparse
+
+# num bytes for the request body buffer; request.json only works if the request
+# size is less than this
+bottle.Request.MEMFILE_MAX = 300 * 1024
+
+user_options_store.LoadDefaults()
+SERVER_STATE = server_state.ServerState( user_options_store.GetAll() )
+
+LOGGER = logging.getLogger( __name__ )
+app = bottle.Bottle()
+
+
+@app.post( '/event_notification' )
+def EventNotification():
+  LOGGER.info( 'Received event notification')
+  request_data = request.json
+  event_name = request_data[ 'event_name' ]
+  LOGGER.debug( 'Event name: %s', event_name )
+
+  event_handler = 'On' + event_name
+  getattr( SERVER_STATE.GetGeneralCompleter(), event_handler )( request_data )
+
+  filetypes = request_data[ 'filetypes' ]
+  if SERVER_STATE.FiletypeCompletionUsable( filetypes ):
+    getattr( SERVER_STATE.GetFiletypeCompleter( filetypes ),
+              event_handler )( request_data )
+
+  if hasattr( extra_conf_store, event_handler ):
+    getattr( extra_conf_store, event_handler )( request_data )
+
+  # TODO: shut down the server on VimClose
+
+
+@app.post( '/run_completer_command' )
+def RunCompleterCommand():
+  LOGGER.info( 'Received command request')
+  request_data = request.json
+  completer_target = request_data[ 'completer_target' ]
+
+  if completer_target == 'identifier':
+    completer = SERVER_STATE.GetGeneralCompleter()
+  else:
+    completer = SERVER_STATE.GetFiletypeCompleter()
+
+  return _JsonResponse(
+      completer.OnUserCommand( request_data[ 'command_arguments' ],
+                               request_data ) )
+
+
+@app.post( '/get_completions' )
+def GetCompletions():
+  LOGGER.info( 'Received completion request')
+  request_data = request.json
+  do_filetype_completion = SERVER_STATE.ShouldUseFiletypeCompleter(
+    request_data )
+  LOGGER.debug( 'Using filetype completion: %s', do_filetype_completion )
+  filetypes = request_data[ 'filetypes' ]
+  completer = ( SERVER_STATE.GetFiletypeCompleter( filetypes ) if
+                do_filetype_completion else
+                SERVER_STATE.GetGeneralCompleter() )
+
+  # This is necessary so that general_completer_store fills up
+  # _current_query_completers.
+  # TODO: Fix this.
+  completer.ShouldUseNow( request_data )
+
+  # TODO: This should not be async anymore, server is multi-threaded
+  completer.CandidatesForQueryAsync( request_data )
+  while not completer.AsyncCandidateRequestReady():
+    time.sleep( 0.03 )
+  return _JsonResponse( completer.CandidatesFromStoredRequest() )
+
+
+@app.route( '/user_options' )
+def UserOptions():
+  global SERVER_STATE
+
+  if request.method == 'GET':
+    LOGGER.info( 'Received user options GET request')
+    return SERVER_STATE.user_options
+  elif request.method == 'POST':
+    LOGGER.info( 'Received user options POST request')
+    data = request.json
+    SERVER_STATE = server_state.ServerState( data )
+    user_options_store.SetAll( data )
+  else:
+    response.status = httplib.BAD_REQUEST
+
+
+@app.post( '/filetype_completion_available')
+def FiletypeCompletionAvailable():
+  LOGGER.info( 'Received filetype completion available request')
+  return _JsonResponse( SERVER_STATE.FiletypeCompletionAvailable(
+      request.json[ 'filetypes' ] ) )
+
+
+def _JsonResponse( data ):
+  response.set_header( 'Content-Type', 'application/json' )
+  return json.dumps( data )
+
+
+def Main():
+  global LOGGER
+  parser = argparse.ArgumentParser()
+  parser.add_argument( '--host', type = str, default = 'localhost',
+                       help='server hostname')
+  parser.add_argument( '--port', type = int, default = 6666,
+                       help='server port')
+  parser.add_argument( '--log', type = str, default = 'info',
+                       help='log level, one of '
+                            '[debug|info|warning|error|critical]')
+  args = parser.parse_args()
+
+  numeric_level = getattr( logging, args.log.upper(), None )
+  if not isinstance( numeric_level, int ):
+    raise ValueError( 'Invalid log level: %s' % args.log )
+
+  logging.basicConfig( format = '%(asctime)s - %(levelname)s - %(message)s',
+                       level = numeric_level )
+
+  LOGGER = logging.getLogger( __name__ )
+  run( app = app, host = args.host, port = args.port, server='cherrypy' )
+
+
+if __name__ == "__main__":
+  Main()
+

python/ycm/server/server_state.py

@@ -0,0 +1,108 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2013  Strahinja Val Markovic  <val@markovic.io>
+#
+# 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/>.
+
+import imp
+import os
+from ycm.completers.general.general_completer_store import GeneralCompleterStore
+
+
+class ServerState( object ):
+  def __init__( self, user_options ):
+    self._user_options = user_options
+    self._filetype_completers = {}
+    self._gencomp = GeneralCompleterStore( self._user_options )
+
+
+  @property
+  def user_options( self ):
+    return self._user_options
+
+
+  def _GetFiletypeCompleterForFiletype( self, filetype ):
+    try:
+      return self._filetype_completers[ filetype ]
+    except KeyError:
+      pass
+
+    module_path = _PathToFiletypeCompleterPluginLoader( filetype )
+
+    completer = None
+    supported_filetypes = [ filetype ]
+    if os.path.exists( module_path ):
+      module = imp.load_source( filetype, module_path )
+      completer = module.GetCompleter( self._user_options )
+      if completer:
+        supported_filetypes.extend( completer.SupportedFiletypes() )
+
+    for supported_filetype in supported_filetypes:
+      self._filetype_completers[ supported_filetype ] = completer
+    return completer
+
+
+  def GetFiletypeCompleter( self, current_filetypes ):
+    completers = [ self._GetFiletypeCompleterForFiletype( filetype )
+                   for filetype in current_filetypes ]
+
+    for completer in completers:
+      if completer:
+        return completer
+
+    return None
+
+
+  def FiletypeCompletionAvailable( self, filetypes ):
+    return bool( self.GetFiletypeCompleter( filetypes ) )
+
+
+  def FiletypeCompletionUsable( self, filetypes ):
+    return ( self.CurrentFiletypeCompletionEnabled( filetypes ) and
+             self.FiletypeCompletionAvailable( filetypes ) )
+
+
+  def ShouldUseGeneralCompleter( self, request_data ):
+    return self._gencomp.ShouldUseNow( request_data )
+
+
+  def ShouldUseFiletypeCompleter( self, request_data ):
+    filetypes = request_data[ 'filetypes' ]
+    if self.FiletypeCompletionUsable( filetypes ):
+      return self.GetFiletypeCompleter( filetypes ).ShouldUseNow( request_data )
+    return False
+
+
+  def GetGeneralCompleter( self ):
+    return self._gencomp
+
+
+  def CurrentFiletypeCompletionEnabled( self, current_filetypes ):
+    filetype_to_disable = self._user_options[
+        'filetype_specific_completion_to_disable' ]
+    return not all([ x in filetype_to_disable for x in current_filetypes ])
+
+
+
+def _PathToCompletersFolder():
+  dir_of_current_script = os.path.dirname( os.path.abspath( __file__ ) )
+  return os.path.join( dir_of_current_script, '..', 'completers' )
+
+
+def _PathToFiletypeCompleterPluginLoader( filetype ):
+  return os.path.join( _PathToCompletersFolder(), filetype, 'hook.py' )
+
+

python/ycm/server/tests/basic_test.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2013  Strahinja Val Markovic  <val@markovic.io>
+#
+# 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 webtest import TestApp
+from .. import server
+from ..responses import BuildCompletionData
+from nose.tools import ok_, eq_
+import bottle
+
+bottle.debug( True )
+
+
+def GetCompletions_IdentifierCompleterWorks_test():
+  app = TestApp( server.app )
+  event_data = {
+    'event_name': 'FileReadyToParse',
+    'filetypes': ['foo'],
+    'filepath': '/foo/bar',
+    'file_data': {
+      '/foo/bar': {
+        'contents': 'foo foogoo ba',
+        'filetypes': ['foo']
+      }
+    }
+  }
+
+  app.post_json( '/event_notification', event_data )
+
+  line_value = 'oo foo foogoo ba';
+  completion_data = {
+    'query': 'oo',
+    'filetypes': ['foo'],
+    'filepath': '/foo/bar',
+    'line_num': 0,
+    'column_num': 2,
+    'start_column': 0,
+    'line_value': line_value,
+    'file_data': {
+      '/foo/bar': {
+        'contents': line_value,
+        'filetypes': ['foo']
+      }
+    }
+  }
+
+  eq_( [ BuildCompletionData( 'foo' ),
+         BuildCompletionData( 'foogoo' ) ],
+       app.post_json( '/get_completions', completion_data ).json )
+
+
+def FiletypeCompletionAvailable_Works_test():
+  app = TestApp( server.app )
+  request_data = {
+    'filetypes': ['cpp']
+  }
+
+  ok_( app.post_json( '/filetype_completion_available',
+                      request_data ).json )

python/ycm/user_options_store.py

@@ -17,6 +17,8 @@
 # You should have received a copy of the GNU General Public License
 # along with YouCompleteMe.  If not, see <http://www.gnu.org/licenses/>.
 
+import json
+import os
 from ycm.frozendict import frozendict
 
 _USER_OPTIONS = {}
@@ -32,3 +34,16 @@ def GetAll():
 
 def Value( key ):
   return _USER_OPTIONS[ key ]
+
+
+def LoadDefaults():
+  SetAll( _DefaultOptions() )
+
+
+def _DefaultOptions():
+  settings_path = os.path.join(
+      os.path.dirname( os.path.abspath( __file__ ) ),
+      'server/default_settings.json' )
+  with open( settings_path ) as f:
+    return json.loads( f.read() )
+

python/ycm/utils.py

@@ -17,6 +17,9 @@
 # You should have received a copy of the GNU General Public License
 # along with YouCompleteMe.  If not, see <http://www.gnu.org/licenses/>.
 
+import tempfile
+import os
+
 def IsIdentifierChar( char ):
   return char.isalnum() or char == '_'
 
@@ -29,3 +32,7 @@ def ToUtf8IfNeeded( string_or_unicode ):
   if isinstance( string_or_unicode, unicode ):
     return string_or_unicode.encode( 'utf8' )
   return string_or_unicode
+
+
+def PathToTempDir():
+  return os.path.join( tempfile.gettempdir(), 'ycm_temp' )

python/ycm/youcompleteme.py

@@ -17,176 +17,53 @@
 # You should have received a copy of the GNU General Public License
 # along with YouCompleteMe.  If not, see <http://www.gnu.org/licenses/>.
 
-import imp
 import os
 import time
 import vim
 import ycm_core
-import logging
-import tempfile
+import subprocess
 from ycm import vimsupport
-from ycm import base
-from ycm import extra_conf_store
+from ycm import utils
 from ycm.completers.all.omni_completer import OmniCompleter
-from ycm.completers.general.general_completer_store import GeneralCompleterStore
-
-
-# TODO: Put the Request classes in separate files
-class BaseRequest( object ):
-  def __init__( self ):
-    pass
-
-
-  def Start( self ):
-    pass
-
-
-  def Done( self ):
-    return True
-
-
-  def Response( self ):
-    return {}
-
-
-class CompletionRequest( BaseRequest ):
-  def __init__( self, ycm_state ):
-    super( CompletionRequest, self ).__init__()
-
-    self._completion_start_column = base.CompletionStartColumn()
-    self._ycm_state = ycm_state
-    self._request_data = _BuildRequestData( self._completion_start_column )
-    self._do_filetype_completion = self._ycm_state.ShouldUseFiletypeCompleter(
-      self._request_data )
-    self._completer = ( self._ycm_state.GetFiletypeCompleter() if
-                        self._do_filetype_completion else
-                        self._ycm_state.GetGeneralCompleter() )
-
-
-  def ShouldComplete( self ):
-    return ( self._do_filetype_completion or
-             self._ycm_state.ShouldUseGeneralCompleter( self._request_data ) )
-
-
-  def CompletionStartColumn( self ):
-    return self._completion_start_column
-
-
-  def Start( self, query ):
-    self._request_data[ 'query' ] = query
-    self._completer.CandidatesForQueryAsync( self._request_data )
-
-  def Done( self ):
-    return self._completer.AsyncCandidateRequestReady()
-
-
-  def Results( self ):
-    try:
-      return [ _ConvertCompletionDataToVimData( x )
-              for x in self._completer.CandidatesFromStoredRequest() ]
-    except Exception as e:
-      vimsupport.PostVimMessage( str( e ) )
-      return []
-
-
-
-class CommandRequest( BaseRequest ):
-  class ServerResponse( object ):
-    def __init__( self ):
-      pass
-
-    def Valid( self ):
-      return True
-
-  def __init__( self, ycm_state, arguments, completer_target = None ):
-    super( CommandRequest, self ).__init__()
-
-    if not completer_target:
-      completer_target = 'filetpe_default'
-
-    if completer_target == 'omni':
-      self._completer = ycm_state.GetOmniCompleter()
-    elif completer_target == 'identifier':
-      self._completer = ycm_state.GetGeneralCompleter()
-    else:
-      self._completer = ycm_state.GetFiletypeCompleter()
-    self._arguments = arguments
-
-
-  def Start( self ):
-    self._completer.OnUserCommand( self._arguments,
-                                   _BuildRequestData() )
-
-
-  def Response( self ):
-    # TODO: Call vimsupport.JumpToLocation if the user called a GoTo command...
-    # we may want to have specific subclasses of CommandRequest so that a
-    # GoToRequest knows it needs to jump after the data comes back.
-    #
-    # Also need to run the following on GoTo data:
-    # CAREFUL about line/column number 0-based/1-based confusion!
-    #
-    # defs = []
-    # defs.append( {'filename': definition.module_path.encode( 'utf-8' ),
-    #               'lnum': definition.line,
-    #               'col': definition.column + 1,
-    #               'text': definition.description.encode( 'utf-8' ) } )
-    # vim.eval( 'setqflist( %s )' % repr( defs ) )
-    # vim.eval( 'youcompleteme#OpenGoToList()' )
-    return self.ServerResponse()
-
-
-class EventNotification( BaseRequest ):
-  def __init__( self, event_name, ycm_state, extra_data = None ):
-    super( EventNotification, self ).__init__()
-
-    self._ycm_state = ycm_state
-    self._event_name = event_name
-    self._request_data = _BuildRequestData()
-    if extra_data:
-      self._request_data.update( extra_data )
-
-
-  def Start( self ):
-    event_handler = 'On' + self._event_name
-    getattr( self._ycm_state.GetGeneralCompleter(),
-             event_handler )( self._request_data )
-
-    if self._ycm_state.FiletypeCompletionUsable():
-      getattr( self._ycm_state.GetFiletypeCompleter(),
-               event_handler )( self._request_data )
-
-    if hasattr( extra_conf_store, event_handler ):
-      getattr( extra_conf_store, event_handler )( self._request_data )
-
-
-
-def SendEventNotificationAsync( event_name, ycm_state, extra_data = None ):
-  event = EventNotification( event_name, ycm_state, extra_data )
-  event.Start()
+from ycm.client.base_request import BaseRequest
+from ycm.client.command_request import CommandRequest
+from ycm.client.completion_request import CompletionRequest
+from ycm.client.event_notification import SendEventNotificationAsync
 
+SERVER_PORT_RANGE_START = 10000
 
 class YouCompleteMe( object ):
   def __init__( self, user_options ):
-    # TODO: This should go into the server
-    # TODO: Use more logging like we do in cs_completer
-    self._logfile = tempfile.NamedTemporaryFile()
-    logging.basicConfig( format='%(asctime)s - %(levelname)s - %(message)s',
-                         filename=self._logfile.name,
-                         level=logging.DEBUG )
-
     self._user_options = user_options
-    self._gencomp = GeneralCompleterStore( user_options )
     self._omnicomp = OmniCompleter( user_options )
-    self._filetype_completers = {}
     self._current_completion_request = None
 
+    server_port = SERVER_PORT_RANGE_START + os.getpid()
+    command = ''.join( [ 'python ',
+                        _PathToServerScript(),
+                        ' --port=',
+                        str( server_port ) ] )
+
+    BaseRequest.server_location = 'http://localhost:' + str( server_port )
+
+    filename_format = os.path.join( utils.PathToTempDir(),
+                                   'server_{port}_{std}.log' )
+
+    self._server_stdout = filename_format.format( port=server_port,
+                                                  std='stdout' )
+    self._server_stderr = filename_format.format( port=server_port,
+                                                  std='stderr' )
+
+    with open( self._server_stderr, 'w' ) as fstderr:
+      with open( self._server_stdout, 'w' ) as fstdout:
+        subprocess.Popen( command, stdout=fstdout, stderr=fstderr, shell=True )
+
 
   def CreateCompletionRequest( self ):
     # We have to store a reference to the newly created CompletionRequest
     # because VimScript can't store a reference to a Python object across
     # function calls... Thus we need to keep this request somewhere.
-    self._current_completion_request = CompletionRequest( self )
+    self._current_completion_request = CompletionRequest()
     return self._current_completion_request
 
 
@@ -204,72 +81,19 @@ class YouCompleteMe( object ):
     return self._current_completion_request
 
 
-  def GetGeneralCompleter( self ):
-    return self._gencomp
-
-
   def GetOmniCompleter( self ):
     return self._omnicomp
 
 
-  def GetFiletypeCompleter( self ):
-    filetypes = vimsupport.CurrentFiletypes()
-
-    completers = [ self.GetFiletypeCompleterForFiletype( filetype )
-                   for filetype in filetypes ]
-
-    if not completers:
-      return None
-
-    # Try to find a native completer first
-    for completer in completers:
-      if completer and completer is not self._omnicomp:
-        return completer
-
-    # Return the omni completer for the first filetype
-    return completers[ 0 ]
-
-
-  def GetFiletypeCompleterForFiletype( self, filetype ):
-    try:
-      return self._filetype_completers[ filetype ]
-    except KeyError:
-      pass
-
-    module_path = _PathToFiletypeCompleterPluginLoader( filetype )
-
-    completer = None
-    supported_filetypes = [ filetype ]
-    if os.path.exists( module_path ):
-      module = imp.load_source( filetype, module_path )
-      completer = module.GetCompleter( self._user_options )
-      if completer:
-        supported_filetypes.extend( completer.SupportedFiletypes() )
-    else:
-      completer = self._omnicomp
-
-    for supported_filetype in supported_filetypes:
-      self._filetype_completers[ supported_filetype ] = completer
-    return completer
-
-
-  def ShouldUseGeneralCompleter( self, request_data ):
-    return self._gencomp.ShouldUseNow( request_data )
-
-
-  def ShouldUseFiletypeCompleter( self, request_data ):
-    if self.FiletypeCompletionUsable():
-      return self.GetFiletypeCompleter().ShouldUseNow( request_data )
+  def NativeFiletypeCompletionAvailable( self ):
+    # TODO: Talk to server about this.
     return False
 
 
-  def NativeFiletypeCompletionAvailable( self ):
-    completer = self.GetFiletypeCompleter()
-    return bool( completer ) and completer is not self._omnicomp
-
-
-  def FiletypeCompletionAvailable( self ):
-    return bool( self.GetFiletypeCompleter() )
+  # TODO: This may not be needed at all when the server is ready. Evaluate this
+  # later.
+  # def FiletypeCompletionAvailable( self ):
+  #   return bool( self.GetFiletypeCompleter() )
 
 
   def NativeFiletypeCompletionUsable( self ):
@@ -277,9 +101,11 @@ class YouCompleteMe( object ):
              self.NativeFiletypeCompletionAvailable() )
 
 
-  def FiletypeCompletionUsable( self ):
-    return ( self.CurrentFiletypeCompletionEnabled() and
-             self.FiletypeCompletionAvailable() )
+  # TODO: This may not be needed at all when the server is ready. Evaluate this
+  # later.
+  # def FiletypeCompletionUsable( self ):
+  #   return ( self.CurrentFiletypeCompletionEnabled() and
+  #            self.FiletypeCompletionAvailable() )
 
 
   def OnFileReadyToParse( self ):
@@ -290,51 +116,55 @@ class YouCompleteMe( object ):
     # TODO: make this work again
     # if self._user_options[ 'seed_identifiers_with_syntax' ]:
 
-    SendEventNotificationAsync( 'FileReadyToParse', self, extra_data )
+    SendEventNotificationAsync( 'FileReadyToParse', extra_data )
 
 
   def OnBufferUnload( self, deleted_buffer_file ):
     SendEventNotificationAsync( 'BufferUnload',
-                                self,
                                 { 'unloaded_buffer': deleted_buffer_file } )
 
 
   def OnBufferVisit( self ):
-    SendEventNotificationAsync( 'BufferVisit', self )
+    SendEventNotificationAsync( 'BufferVisit' )
 
 
   def OnInsertLeave( self ):
-    SendEventNotificationAsync( 'InsertLeave', self )
+    SendEventNotificationAsync( 'InsertLeave' )
 
 
   def OnVimLeave( self ):
-    SendEventNotificationAsync( 'VimLeave', self )
+    SendEventNotificationAsync( 'VimLeave' )
 
 
   def OnCurrentIdentifierFinished( self ):
-    SendEventNotificationAsync( 'CurrentIdentifierFinished', self )
+    SendEventNotificationAsync( 'CurrentIdentifierFinished' )
 
 
+  # TODO: Make this work again.
   def DiagnosticsForCurrentFileReady( self ):
-    if self.FiletypeCompletionUsable():
-      return self.GetFiletypeCompleter().DiagnosticsForCurrentFileReady()
+    # if self.FiletypeCompletionUsable():
+    #   return self.GetFiletypeCompleter().DiagnosticsForCurrentFileReady()
     return False
 
 
+  # TODO: Make this work again.
   def GetDiagnosticsForCurrentFile( self ):
-    if self.FiletypeCompletionUsable():
-      return self.GetFiletypeCompleter().GetDiagnosticsForCurrentFile()
+    # if self.FiletypeCompletionUsable():
+    #   return self.GetFiletypeCompleter().GetDiagnosticsForCurrentFile()
     return []
 
 
+  # TODO: Make this work again.
   def GetDetailedDiagnostic( self ):
-    if self.FiletypeCompletionUsable():
-      return self.GetFiletypeCompleter().GetDetailedDiagnostic()
+    # if self.FiletypeCompletionUsable():
+    #   return self.GetFiletypeCompleter().GetDetailedDiagnostic()
+    pass
 
 
+  # TODO: Make this work again.
   def GettingCompletions( self ):
-    if self.FiletypeCompletionUsable():
-      return self.GetFiletypeCompleter().GettingCompletions()
+    # if self.FiletypeCompletionUsable():
+    #   return self.GetFiletypeCompleter().GettingCompletions()
     return False
 
 
@@ -366,51 +196,13 @@ class YouCompleteMe( object ):
     return not all([ x in filetype_to_disable for x in filetypes ])
 
 
-def _PathToCompletersFolder():
-  dir_of_current_script = os.path.dirname( os.path.abspath( __file__ ) )
-  return os.path.join( dir_of_current_script, 'completers' )
-
-
-def _PathToFiletypeCompleterPluginLoader( filetype ):
-  return os.path.join( _PathToCompletersFolder(), filetype, 'hook.py' )
-
-
-def _BuildRequestData( start_column = None, query = None ):
-  line, column = vimsupport.CurrentLineAndColumn()
-  request_data = {
-    'filetypes': vimsupport.CurrentFiletypes(),
-    'line_num': line,
-    'column_num': column,
-    'start_column': start_column,
-    'line_value': vim.current.line,
-    'filepath': vim.current.buffer.name,
-    'file_data': vimsupport.GetUnsavedAndCurrentBufferData()
-  }
-
-  if query:
-    request_data[ 'query' ] = query
-
-  return request_data
-
-def _ConvertCompletionDataToVimData( completion_data ):
-  # see :h complete-items for a description of the dictionary fields
-  vim_data = {
-    'word' : completion_data[ 'insertion_text' ],
-    'dup'  : 1,
-  }
-
-  if 'menu_text' in completion_data:
-    vim_data[ 'abbr' ] = completion_data[ 'menu_text' ]
-  if 'extra_menu_info' in completion_data:
-    vim_data[ 'menu' ] = completion_data[ 'extra_menu_info' ]
-  if 'kind' in completion_data:
-    vim_data[ 'kind' ] = completion_data[ 'kind' ]
-  if 'detailed_info' in completion_data:
-    vim_data[ 'info' ] = completion_data[ 'detailed_info' ]
-
-  return vim_data
 
 def _GetTagFiles():
   tag_files = vim.eval( 'tagfiles()' )
   current_working_directory = os.getcwd()
   return [ os.path.join( current_working_directory, x ) for x in tag_files ]
+
+
+def _PathToServerScript():
+  dir_of_current_script = os.path.dirname( os.path.abspath( __file__ ) )
+  return os.path.join( dir_of_current_script, 'server/server.py' )