vim:YCM
vim配置YCM
安装配置时借鉴自 : http://www.tuicool.com/articles/f6feae
最近在接触新的内容.发现没有代码补全的vim真的有点力不从心.就像雄鹰要飞却没有强有力的翅膀.
在网上搜索了一番.得出结论是,omnicpp很屌,neocomplete也很屌,supertab也不错.纠结了好久.选择了YoucompleteMe,多么浪漫的名字.有网友将其定义成vim史上最强.一点不为过.
它集成了clangcomplete omnicppcomplete 等等.有点我就不多说了.网上随便一篇文章都比我能夸.
所以本文的重点不是如何安装.而是如何配置,如果让它工作的更好.
1. 配置YCM
首先是关于syntastic,很多教程现在还是说YCM 结合 syntastic一起工作.但是其实YCM现在完全不需要syntastic.它自己已经有了这样的功能.
下面是我的YCM配置.有很多是摘抄自上面那个链接.
-
let g:ycm_global_ycm_extra_conf = '/home/alai/.vim/bundle/YouCompleteMe/third_party/ycmd/.ycm_extra_conf.py' "指定py文件的路径
-
let g:ycm_show_diagnostics_ui = 1 " 开启实时错误或者warning的检测
-
let g:ycm_add_preview_to_completeopt = 0 " 关闭补全预览
-
" 允许 vim 加载 .ycm_extra_conf.py 文件,不再提示
-
let g:ycm_confirm_extra_conf = 0
-
" 补全内容不以分割子窗口形式出现,只显示补全列表
-
set completeopt-=preview
-
" 补全功能在注释中同样有效
-
let g:ycm_complete_in_comments=1
-
" 开启 YCM 标签补全引擎
-
let g:ycm_collect_identifiers_from_tags_files=1
-
" YCM 集成 OmniCppComplete 补全引擎,设置其快捷键
-
inoremap <leader>; <C-x><C-o>
-
" 从第一个键入字符就开始罗列匹配项
-
let g:ycm_min_num_of_chars_for_completion=1
-
" 禁止缓存匹配项,每次都重新生成匹配项
-
let g:ycm_cache_omnifunc=0
-
" 语法关键字补全
-
let g:ycm_seed_identifiers_with_syntax=1
-
" 错误标记
-
let g:ycm_error_symbol = '✗' "set error or warning signs
-
" warning标记
-
let g:ycm_warning_symbol = '⚠'
-
"highlight YcmErrorSign 标记颜色
-
"highlight YcmWarningSign ctermbg=none
-
"highlight YcmErrorSection 代码中出错字段颜色
-
highlight YcmWarningSection ctermbg=none
-
"highlight YcmErrorLine 出错行颜色
-
"highlight YcmWarningLine
有了这些配置,就可以正常使用补全和代码检测了.
不过有个地方需要主要,这里正常弹出的补全框里面只显示当前文件,系统路径,结构体成员的补全,如果要补全其它文件或者目录的变量,需要借助tags文件,也就是omni补全.上面有个设置其快捷键的选项,所以只需要ctrl + x + o,注意是在插入模式下,这样就可以补全其它路径的文件了.
但是其实这里还有个问题,就是你会发现代码只有错误,没有警告,这让人有点接受不了.好办,只要去上面指定的py文件中,将-werror注释掉就可以了.
当你接触一个稍微正规一点的工程,有代码树那种,你就会发现,ycm的补全几乎发挥不了任何作用.这是为什么呢.因为py文件指定的include路径中.没有你自己自定义的.
这个时候你只要拷贝一份py到你的工程路径,加上include路径就行了.不过这样是不是有点麻烦了.那么现在,还有一个办法, 就是通过脚本来处理.
以下是shell脚本:
-
#!/bin/bash
-
TARGET="./.ycm_extra_conf.py"
-
YCMPY1="/home/alai/bin/genpy/.ycm_extra_conf.beg"
-
YCMPY2="/home/alai/bin/genpy/.ycm_extra_conf.end"
-
TMP=.tmp
-
PWD=$(pwd)
-
PRJ=$(basename ${PWD})
-
filelist=$(find . | grep -E "^.*\.h$")
-
for file in ${filelist}
-
do
-
echo $(dirname "${file}") >> ${TMP}
-
done
-
cat ${YCMPY1} > ${TARGET}
-
DIR=$(cat ${TMP} | sort -u)
-
for i in ${DIR}
-
do
-
echo "'-I'," >> ${TARGET}
-
echo "'${i}'," >> ${TARGET}
-
done
-
cat ${YCMPY2} >> ${TARGET}
-
rm -rf ${TMP}
最好将这个脚本放到~/bin目录下.这样就会有tab补全了.很方便.另外还有两个文件,其实就是将原来的py文件分成了两部分
/home/alai/bin/genpy/.ycm_extra_conf.beg :
-
# 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',
-
'-DNDEBUG',
-
# You 100% do NOT need -DUSE_CLANG_COMPLETER in your flags; only the YCM
-
# source code needs it.
-
'-DUSE_CLANG_COMPLETER',
-
# 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++',
-
'-isystem',
-
'../BoostParts',
-
'-isystem',
-
# This path will only work on OS X, but extra paths that don't exist are not
-
# harmful
-
'/System/Library/Frameworks/Python.framework/Headers',
-
'-isystem',
-
'../llvm/include',
-
'-isystem',
-
'../llvm/tools/clang/include',
-
'-I',
-
'./ClangCompleter',
-
'-isystem',
-
'./tests/gmock/gtest',
-
'-isystem',
-
'./tests/gmock/gtest/include',
-
'-isystem',
-
'./tests/gmock',
-
'-isystem',
-
'./tests/gmock/include',
-
'-isystem',
-
'/usr/include',
-
'-isystem',
-
'/usr/local/include',
-
'-isystem',
-
'/home/liyihai/es/qt4.8.3_arm/include/QtGui',
-
'-isystem',
-
'/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1',
-
'-isystem',
-
'/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include',
/home/alai/bin/genpy/.ycm_extra_conf.end :
-
]
-
# 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
-
#
-
# You can get CMake to generate this file for you by adding:
-
# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
-
# to your CMakeLists.txt file.
-
#
-
# 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
-
}
注意这个脚本要在工程的最上层目录执行.这样就可以自动添加include路径了.是不是很方便啊.不过有个缺点,就是如果某个文件存在空格,可能这个脚本会有意想不到的结果.我还没有试过,如果哪位同学遇到了.麻烦告知.谢谢
2. 结合indexer
有个插件叫做indexer.是用来自动生成tag文件的.当你埋头码了很久以后,突然发现,很多新函数找不到了.没关系,这就是indexer能够帮你做的.
他会实时的去根据代码改变生成新的tag文件.是不是很屌.配置也尤其简单.上面那个链接里面也有说明.这里不多说了.
在配置好以后,我们会发现只要新建工程,就得在.indexer_files文件中添加两行.很麻烦.可能我是有点强迫症了,本来也没有多少文件.但是如果有一种方式可以更轻松,何乐而不为呢.
-
#!/bin/bash
-
INDEX=/home/alai/.indexer_files
-
echo "please make sure you are in your project dir"
-
read -n 1 -p "only (Y/y) means sure: " sure
-
echo ""
-
case ${sure} in
-
y|Y) ;;
-
*) exit ;;
-
esac
-
echo "building..."
-
path=$(pwd)
-
prj=$(basename ${path})
-
$(grep ${prj} ${INDEX} -q)
-
if [ $? -eq 0 ]
-
then
-
echo "already added in ${INDEX}"
-
else
-
echo "" >> ${INDEX}
-
echo "[${prj}]">> ${INDEX}
-
echo ${path} >> ${INDEX}
-
fi
同样推荐各位把这段代码放到bin下,好处和上面一样.另外还有一点,这个脚本也要在工程的最高目录执行.
ok,有了这两个脚本,或者可以把它俩弄成一个,就完全不需要操心其它细节了.只要在适当的时候执行一下(也就是说新建工程或者有了新的include文件时),所有的操心迎刃而解.
我的代码树如下:
最后得瑟两张效果图:
希望能够帮助到有需要的同学们.
https://blog.****.net/cp3alai/article/details/48310833