clang_complete、AutoComplPop 、Supertab 、neocomplcache 、Syntastic(类似功能,仅仅针对c/c++/obj-c代码)

c、c++、obj-c、c#、python

跳转到定义GoToDefinition

跳转到声明GoToDeclaration

以及两者的合体GoToDefinitionElseDeclaration

基于文本(acp,omnicppcompleter)

　　我们常用的omnicppcompleter,acp,vim自带的c-x, c-n的实现方式就是基于文本。更通俗的说法，其实就是一个字：猜

　　其通过文本进行一些正则表达式的匹配，再根据生成的tags(利用ctags生成)来实现自动补全的效果。

基于语义

　　顾名思义，其是通过分析源文件，经过语法分析以后进行补全。由于对源文件进行分析，基于语义的补全可以做到很精确。但是这显然是vim所不可能支持的。而且经过这么多年发展，由于语法分析有很高的难度，也一直没有合适的工具出现。直到，由apple支持的clang/llvm横空出世。YouCompleteMe也正是在clang/llvm的基础上进行构建的。

Bundle 'Valloric/YouCompleteMe'

:BundleInstall

cd ~/.vim/bundle/YouCompleteMe

./install.sh --clang-completer

yum install cmake

vim .vimrc.before.local

#添加如下内容

let g:spf13_bundle_groups['general', 'writing', 'neocomplcache', 'programming', 'php', 'ruby', 'python', 'javascript', 'html', 'misc', 'youcompleteme', ]

:BundleInstall

# This file is NOT licensed under the GPLv3, which is the license for the rest

# of YouCompleteMe.

#

# Here's the license text for this file:

#

# This is free and unencumbered software released into the public domain.

#

# Anyone is free to copy, modify, publish, use, compile, sell, or

# distribute this software, either in source code form or as a compiled

# binary, for any purpose, commercial or non-commercial, and by any

# means.

#

# In jurisdictions that recognize copyright laws, the author or authors

# of this software dedicate any and all copyright interest in the

# software to the public domain. We make this dedication for the benefit

# of the public at large and to the detriment of our heirs and

# successors. We intend this dedication to be an overt act of

# relinquishment in perpetuity of all present and future rights to this

# software under copyright law.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR

# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

# OTHER DEALINGS IN THE SOFTWARE.

#

# For more information, please refer to <http://unlicense.org/>

import os

import ycm_core

# These are the compilation flags that will be used in case there's no

# compilation database set (by default, one is not set).

# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.

flags = [

'-Wall',

'-Wextra',

#'-Werror',

#'-Wc++98-compat',

'-Wno-long-long',

'-Wno-variadic-macros',

'-fexceptions',

'-stdlib=libc++',

# THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which

# language to use when compiling headers. So it will guess. Badly. So C++

# headers will be compiled as C headers. You don't want that so ALWAYS specify

# a "-std=<something>".

# For a C project, you would set this to something like 'c99' instead of

# 'c++11'.

'-std=c++11',

# ...and the same thing goes for the magic -x option which specifies the

# language that the files to be compiled are written in. This is mostly

# relevant for c++ headers.

# For a C project, you would set this to 'c' instead of 'c++'.

'-x',

'c++',

'-I',

'.',

'-isystem',

'/usr/include',

'-isystem',

'/usr/local/include',

'-isystem',

'/Library/Developer/CommandLineTools/usr/include',

'-isystem',

'/Library/Developer/CommandLineTools/usr/bin/../lib/c++/v1',

]

# Set this to the absolute path to the folder (NOT the file!) containing the

# compile_commands.json file to use that instead of 'flags'. See here for

# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html

#

# Most projects will NOT need to set this to anything; you can just change the

# 'flags' list of compilation flags. Notice that YCM itself uses that approach.

compilation_database_folder = ''

if os.path.exists( compilation_database_folder ):

  database = ycm_core.CompilationDatabase( compilation_database_folder )

else:

  database = None

SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]

def DirectoryOfThisScript():

  return os.path.dirname( os.path.abspath( __file__ ) )

def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):

  if not working_directory:

    return list( flags )

  new_flags = []

  make_next_absolute = False

  path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]

  for flag in flags:

    new_flag = flag

    if make_next_absolute:

      make_next_absolute = False

      if not flag.startswith( '/' ):

        new_flag = os.path.join( working_directory, flag )

    for path_flag in path_flags:

      if flag == path_flag:

        make_next_absolute = True

        break

      if flag.startswith( path_flag ):

        path = flag[ len( path_flag ): ]

        new_flag = path_flag + os.path.join( working_directory, path )

        break

    if new_flag:

      new_flags.append( new_flag )

  return new_flags

def IsHeaderFile( filename ):

  extension = os.path.splitext( filename )[ 1 ]

  return extension in [ '.h', '.hxx', '.hpp', '.hh' ]

def GetCompilationInfoForFile( filename ):

  # The compilation_commands.json file generated by CMake does not have entries

  # for header files. So we do our best by asking the db for flags for a

  # corresponding source file, if any. If one exists, the flags for that file

  # should be good enough.

  if IsHeaderFile( filename ):

    basename = os.path.splitext( filename )[ 0 ]

    for extension in SOURCE_EXTENSIONS:

      replacement_file = basename + extension

      if os.path.exists( replacement_file ):

        compilation_info = database.GetCompilationInfoForFile(

          replacement_file )

        if compilation_info.compiler_flags_:

          return compilation_info

    return None

  return database.GetCompilationInfoForFile( filename )

def FlagsForFile( filename, **kwargs ):

  if database:

    # Bear in mind that compilation_info.compiler_flags_ does NOT return a

    # python list, but a "list-like" StringVec object

    compilation_info = GetCompilationInfoForFile( filename )

    if not compilation_info:

      return None

    final_flags = MakeRelativePathsInFlagsAbsolute(

      compilation_info.compiler_flags_,

      compilation_info.compiler_working_dir_ )

    # NOTE: This is just for YouCompleteMe; it's highly likely that your project

    # does NOT need to remove the stdlib flag. DO NOT USE THIS IN YOUR

    # ycm_extra_conf IF YOU'RE NOT 100% SURE YOU NEED IT.

    #try:

    #  final_flags.remove( '-stdlib=libc++' )

    #except ValueError:

    #  pass

  else:

    relative_to = DirectoryOfThisScript()

    final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )

  return {

    'flags': final_flags,

    'do_cache': True

  }

" YouCompleteMe配置

let g:ycm_error_symbol = '>>'

let g:ycm_warning_symbol = '>*'

nnoremap <leader>gl :YcmCompleter GoToDeclaration<CR>

nnoremap <leader>gf :YcmCompleter GoToDefinition<CR>

nnoremap <leader>gg :YcmCompleter GoToDefinitionElseDeclaration<CR>

nmap <F4> :YcmDiags<CR>

https://github.com/Valloric/ycmd/pull/658