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# 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/>.
from __future__ import unicode_literals
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import
from future import standard_library
standard_library.install_aliases()
from builtins import * # noqa
from future.utils import iteritems
from ycm import vimsupport
from ycmd import user_options_store
from ycmd import request_wrap
from ycmd import identifier_utils
YCM_VAR_PREFIX = 'ycm_'
def BuildServerConf():
"""Builds a dictionary mapping YCM Vim user options to values. Option names
don't have the 'ycm_' prefix."""
# We only evaluate the keys of the vim globals and not the whole dictionary
# to avoid unicode issues.
# See https://github.com/Valloric/YouCompleteMe/pull/2151 for details.
keys = vimsupport.GetVimGlobalsKeys()
server_conf = {}
for key in keys:
if not key.startswith( YCM_VAR_PREFIX ):
continue
new_key = key[ len( YCM_VAR_PREFIX ): ]
new_value = vimsupport.VimExpressionToPythonType( 'g:' + key )
server_conf[ new_key ] = new_value
return server_conf
def LoadJsonDefaultsIntoVim():
defaults = user_options_store.DefaultOptions()
for key, value in iteritems( defaults ):
new_key = 'g:ycm_' + key
if not vimsupport.VariableExists( new_key ):
vimsupport.SetVariableValue( new_key, value )
def CompletionStartColumn():
return ( request_wrap.CompletionStartColumn(
vimsupport.CurrentLineContents(),
vimsupport.CurrentColumn() + 1,
vimsupport.CurrentFiletypes()[ 0 ] ) - 1 )
def CurrentIdentifierFinished():
current_column = vimsupport.CurrentColumn()
previous_char_index = current_column - 1
if previous_char_index < 0:
return True
line = vimsupport.CurrentLineContents()
filetype = vimsupport.CurrentFiletypes()[ 0 ]
regex = identifier_utils.IdentifierRegexForFiletype( filetype )
for match in regex.finditer( line ):
if match.end() == previous_char_index:
return True
# If the whole line is whitespace, that means the user probably finished an
# identifier on the previous line.
return line[ : current_column ].isspace()
def LastEnteredCharIsIdentifierChar():
current_column = vimsupport.CurrentColumn()
if current_column - 1 < 0:
return False
line = vimsupport.CurrentLineContents()
filetype = vimsupport.CurrentFiletypes()[ 0 ]
return (
identifier_utils.StartOfLongestIdentifierEndingAtIndex(
line, current_column, filetype ) != current_column )
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 isinstance( candidate, dict ):
new_candidate = candidate.copy()
if 'abbr' not 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 isinstance( candidate, str ) or isinstance( candidate, bytes ):
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
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