" LLVM coding guidelines conformance for VIM
" $Revision$
"
" Maintainer: The LLVM Team, http://llvm.org
" WARNING: Read before you source in all these commands and macros! Some
" of them may change VIM behavior that you depend on.
"
" You can run VIM with these settings without changing your current setup with:
" $ vim -u /path/to/llvm/utils/vim/vimrc
" It's VIM, not VI
set nocompatible
" A tab produces a 2-space indentation
set softtabstop=2
set shiftwidth=2
set expandtab
" Highlight trailing whitespace and lines longer than 80 columns.
highlight LongLine ctermbg=DarkYellow guibg=DarkYellow
highlight WhitespaceEOL ctermbg=DarkYellow guibg=DarkYellow
if v:version >= 702
" Lines longer than 80 columns.
au BufWinEnter * let w:m0=matchadd('LongLine', '\%>80v.\+', -1)
" Whitespace at the end of a line. This little dance suppresses
" whitespace that has just been typed.
au BufWinEnter * let w:m1=matchadd('WhitespaceEOL', '\s\+$', -1)
au InsertEnter * call matchdelete(w:m1)
au InsertEnter * let w:m2=matchadd('WhitespaceEOL', '\s\+\%#\@<!$', -1)
au InsertLeave * call matchdelete(w:m2)
au InsertLeave * let w:m1=matchadd('WhitespaceEOL', '\s\+$', -1)
else
au BufRead,BufNewFile * syntax match LongLine /\%>80v.\+/
au InsertEnter * syntax match WhitespaceEOL /\s\+\%#\@<!$/
au InsertLeave * syntax match WhitespaceEOL /\s\+$/
endif
" Enable filetype detection
filetype on
" Optional
" C/C++ programming helpers
augroup csrc
au!
autocmd FileType * set nocindent smartindent
autocmd FileType c,cpp set cindent
augroup END
" Set a few indentation parameters. See the VIM help for cinoptions-values for
" details. These aren't absolute rules; they're just an approximation of
" common style in LLVM source.
set cinoptions=:0,g0,(0,Ws,l1
" Add and delete spaces in increments of `shiftwidth' for tabs
set smarttab
" Highlight syntax in programming languages
syntax on
" LLVM Makefiles can have names such as Makefile.rules or TEST.nightly.Makefile,
" so it's important to categorize them as such.
augroup filetype
au! BufRead,BufNewFile *Makefile* set filetype=make
augroup END
" In Makefiles, don't expand tabs to spaces, since we need the actual tabs
autocmd FileType make set noexpandtab
" Useful macros for cleaning up code to conform to LLVM coding guidelines
" Delete trailing whitespace and tabs at the end of each line
command! DeleteTrailingWs :%s/\s\+$//
" Convert all tab characters to two spaces
command! Untab :%s/\t/ /g
" Enable syntax highlighting for LLVM files. To use, copy
" utils/vim/llvm.vim to ~/.vim/syntax .
augroup filetype
au! BufRead,BufNewFile *.ll set filetype=llvm
augroup END
" Enable syntax highlighting for tablegen files. To use, copy
" utils/vim/tablegen.vim to ~/.vim/syntax .
augroup filetype
au! BufRead,BufNewFile *.td set filetype=tablegen
augroup END
" Additional vim features to optionally uncomment.
"set showcmd
"set showmatch
"set showmode
"set incsearch
"set ruler
" Clang code-completion support. This is somewhat experimental!
" A path to a clang executable.
let g:clang_path = "clang++"
" A list of options to add to the clang commandline, for example to add
" include paths, predefined macros, and language options.
let g:clang_opts = [
\ "-x","c++",
\ "-D__STDC_LIMIT_MACROS=1","-D__STDC_CONSTANT_MACROS=1",
\ "-Iinclude" ]
function! ClangComplete(findstart, base)
if a:findstart == 1
" In findstart mode, look for the beginning of the current identifier.
let l:line = getline('.')
let l:start = col('.') - 1
while l:start > 0 && l:line[l:start - 1] =~ '\i'
let l:start -= 1
endwhile
return l:start
endif
" Get the current line and column numbers.
let l:l = line('.')
let l:c = col('.')
" Build a clang commandline to do code completion on stdin.
let l:the_command = shellescape(g:clang_path) .
\ " -cc1 -code-completion-at=-:" . l:l . ":" . l:c
for l:opt in g:clang_opts
let l:the_command .= " " . shellescape(l:opt)
endfor
" Copy the contents of the current buffer into a string for stdin.
" TODO: The extra space at the end is for working around clang's
" apparent inability to do code completion at the very end of the
" input.
" TODO: Is it better to feed clang the entire file instead of truncating
" it at the current line?
let l:process_input = join(getline(1, l:l), "\n") . " "
" Run it!
let l:input_lines = split(system(l:the_command, l:process_input), "\n")
" Parse the output.
for l:input_line in l:input_lines
" Vim's substring operator is annoyingly inconsistent with python's.
if l:input_line[:11] == 'COMPLETION: '
let l:value = l:input_line[12:]
" Chop off anything after " : ", if present, and move it to the menu.
let l:menu = ""
let l:spacecolonspace = stridx(l:value, " : ")
if l:spacecolonspace != -1
let l:menu = l:value[l:spacecolonspace+3:]
let l:value = l:value[:l:spacecolonspace-1]
endif
" Chop off " (Hidden)", if present, and move it to the menu.
let l:hidden = stridx(l:value, " (Hidden)")
if l:hidden != -1
let l:menu .= " (Hidden)"
let l:value = l:value[:l:hidden-1]
endif
" Handle "Pattern". TODO: Make clang less weird.
if l:value == "Pattern"
let l:value = l:menu
let l:pound = stridx(l:value, "#")
" Truncate the at the first [#, <#, or {#.
if l:pound != -1
let l:value = l:value[:l:pound-2]
endif
endif
" Filter out results which don't match the base string.
if a:base != ""
if l:value[:strlen(a:base)-1] != a:base
continue
end
endif
" TODO: Don't dump the raw input into info, though it's nice for now.
" TODO: The kind string?
let l:item = {
\ "word": l:value,
\ "menu": l:menu,
\ "info": l:input_line,
\ "dup": 1 }
" Report a result.
if complete_add(l:item) == 0
return []
endif
if complete_check()
return []
endif
elseif l:input_line[:9] == "OVERLOAD: "
" An overload candidate. Use a crazy hack to get vim to
" display the results. TODO: Make this better.
let l:value = l:input_line[10:]
let l:item = {
\ "word": " ",
\ "menu": l:value,
\ "info": l:input_line,
\ "dup": 1}
" Report a result.
if complete_add(l:item) == 0
return []
endif
if complete_check()
return []
endif
endif
endfor
return []
endfunction ClangComplete
" This to enables the somewhat-experimental clang-based
" autocompletion support.
set omnifunc=ClangComplete