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|
#!/usr/bin/env python
#
# Copyright (C) 2011, 2012 Google Inc.
#
# 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
from ycm import vimsupport
from ycm import utils
from ycm import user_options_store
import ycm_client_support
YCM_VAR_PREFIX = 'ycm_'
def BuildServerConf():
"""Builds a dictionary mapping YCM Vim user options to values. Option names
don't have the 'ycm_' prefix."""
vim_globals = vimsupport.GetReadOnlyVimGlobals( force_python_objects = True )
server_conf = {}
for key, value in vim_globals.items():
if not key.startswith( YCM_VAR_PREFIX ):
continue
try:
new_value = int( value )
except:
new_value = value
new_key = key[ len( YCM_VAR_PREFIX ): ]
server_conf[ new_key ] = new_value
return server_conf
def LoadJsonDefaultsIntoVim():
defaults = user_options_store.DefaultOptions()
vim_defaults = {}
for key, value in defaults.iteritems():
vim_defaults[ 'ycm_' + key ] = value
vimsupport.LoadDictIntoVimGlobals( vim_defaults, overwrite = False )
def CompletionStartColumn():
"""Returns the 0-based index where the completion string should start. So if
the user enters:
foo.bar^
with the cursor being at the location of the caret, then the starting column
would be the index of the letter 'b'.
"""
line = vim.current.line
start_column = vimsupport.CurrentColumn()
while start_column > 0 and utils.IsIdentifierChar( line[ start_column - 1 ] ):
start_column -= 1
return start_column
def CurrentIdentifierFinished():
current_column = vimsupport.CurrentColumn()
previous_char_index = current_column - 1
if previous_char_index < 0:
return True
line = vim.current.line
try:
previous_char = line[ previous_char_index ]
except IndexError:
return False
if utils.IsIdentifierChar( previous_char ):
return False
if ( not utils.IsIdentifierChar( previous_char ) and
previous_char_index > 0 and
utils.IsIdentifierChar( line[ previous_char_index - 1 ] ) ):
return True
else:
return line[ : current_column ].isspace()
def LastEnteredCharIsIdentifierChar():
current_column = vimsupport.CurrentColumn()
previous_char_index = current_column - 1
if previous_char_index < 0:
return False
line = vim.current.line
try:
previous_char = line[ previous_char_index ]
except IndexError:
return False
return utils.IsIdentifierChar( previous_char )
def AdjustCandidateInsertionText( candidates ):
"""This function adjusts the candidate insertion text to take into account the
text that's currently in front of the cursor.
For instance ('|' represents the cursor):
1. Buffer state: 'foo.|bar'
2. A completion candidate of 'zoobar' is shown and the user selects it.
3. Buffer state: 'foo.zoobar|bar' instead of 'foo.zoo|bar' which is what the
user wanted.
This function changes candidates to resolve that issue.
It could be argued that the user actually wants the final buffer state to be
'foo.zoobar|' (the cursor at the end), but that would be much more difficult
to implement and is probably not worth doing.
"""
def NewCandidateInsertionText( to_insert, text_after_cursor ):
overlap_len = OverlapLength( to_insert, text_after_cursor )
if overlap_len:
return to_insert[ :-overlap_len ]
return to_insert
text_after_cursor = vimsupport.TextAfterCursor()
if not text_after_cursor:
return candidates
new_candidates = []
for candidate in candidates:
if type( candidate ) is dict:
new_candidate = candidate.copy()
if not 'abbr' in new_candidate:
new_candidate[ 'abbr' ] = new_candidate[ 'word' ]
new_candidate[ 'word' ] = NewCandidateInsertionText(
new_candidate[ 'word' ],
text_after_cursor )
new_candidates.append( new_candidate )
elif type( candidate ) is str:
new_candidates.append(
{ 'abbr': candidate,
'word': NewCandidateInsertionText( candidate, text_after_cursor ) } )
return new_candidates
def OverlapLength( left_string, right_string ):
"""Returns the length of the overlap between two strings.
Example: "foo baro" and "baro zoo" -> 4
"""
left_string_length = len( left_string )
right_string_length = len( right_string )
if not left_string_length or not right_string_length:
return 0
# Truncate the longer string.
if left_string_length > right_string_length:
left_string = left_string[ -right_string_length: ]
elif left_string_length < right_string_length:
right_string = right_string[ :left_string_length ]
if left_string == right_string:
return min( left_string_length, right_string_length )
# Start by looking for a single character match
# and increase length until no match is found.
best = 0
length = 1
while True:
pattern = left_string[ -length: ]
found = right_string.find( pattern )
if found < 0:
return best
length += found
if left_string[ -length: ] == right_string[ :length ]:
best = length
length += 1
COMPATIBLE_WITH_CORE_VERSION = 8
def CompatibleWithYcmCore():
try:
current_core_version = ycm_client_support.YcmCoreVersion()
except AttributeError:
return False
return current_core_version == COMPATIBLE_WITH_CORE_VERSION
|
