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https://github.com/vim/vim
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226 lines
6.4 KiB
VimL
226 lines
6.4 KiB
VimL
" Vim Ada plugin file
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" Language: Ada
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" Maintainer: Neil Bird <neil@fnxweb.com>
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" Last Change: 2003 May 11
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" Version: $Id$
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" Look for the latest version at http://vim.sourceforge.net/
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"
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" Perform Ada specific completion & tagging.
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"
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"
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" Provides mapping overrides for tag jumping that figure out the current
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" Ada object and tag jump to that, not the 'simple' vim word.
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" Similarly allows <Ctrl-N> matching of full-length ada entities from tags.
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" Exports 'AdaWord()' function to return full name of Ada entity under the
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" cursor( or at given line/column), stripping whitespace/newlines as necessary.
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" Only do this when not done yet for this buffer
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if exists("b:did_ftplugin")
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finish
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endif
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" Don't load another plugin for this buffer
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let b:did_ftplugin = 1
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" Temporarily set cpoptions to ensure the script loads OK
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let s:cpoptions = &cpoptions
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set cpo-=C
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" Ada comments
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setlocal comments+=O:--
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" Make local tag mappings for this buffer (if not already set)
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if mapcheck('<C-]>','n') == ''
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nnoremap <unique> <buffer> <C-]> :call JumpToTag_ada('')<cr>
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endif
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if mapcheck('g<C-]>','n') == ''
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nnoremap <unique> <buffer> g<C-]> :call JumpToTag_ada('','stj')<cr>
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endif
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if mapcheck('<C-N>','i') == ''
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inoremap <unique> <buffer> <C-N> <C-R>=<SID>AdaCompletion("\<lt>C-N>")<cr>
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endif
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if mapcheck('<C-P>','i') == ''
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inoremap <unique> <buffer> <C-P> <C-R>=<SID>AdaCompletion("\<lt>C-P>")<cr>
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endif
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if mapcheck('<C-X><C-]>','i') == ''
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inoremap <unique> <buffer> <C-X><C-]> <C-R>=<SID>AdaCompletion("\<lt>C-X>\<lt>C-]>")<cr>
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endif
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if mapcheck('<bs>','i') == ''
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inoremap <silent> <unique> <buffer> <bs> <C-R>=<SID>AdaInsertBackspace()<cr>
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endif
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" Only do this when not done yet for this buffer & matchit is used
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if ! exists("b:match_words") && exists("loaded_matchit")
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" The following lines enable the macros/matchit.vim plugin for
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" Ada-specific extended matching with the % key.
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let s:notend = '\%(\<end\s\+\)\@<!'
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let b:match_words=
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\ s:notend . '\<if\>:\<elsif\>:\<else\>:\<end\>\s\+\<if\>,' .
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\ s:notend . '\<case\>:\<when\>:\<end\>\s\+\<case\>,' .
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\ '\%(\<while\>.*\|\<for\>.*\|'.s:notend.'\)\<loop\>:\<end\>\s\+\<loop\>,' .
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\ '\%(\<do\>\|\<begin\>\):\<exception\>:\<end\>\s*\%($\|[;A-Z]\),' .
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\ s:notend . '\<record\>:\<end\>\s\+\<record\>'
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endif
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" Prevent re-load of functions
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if exists('s:id')
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finish
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endif
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" Get this script's unique id
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map <script> <SID>?? <SID>??
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let s:id = substitute( maparg('<SID>??'), '^<SNR>\(.*\)_??$', '\1', '' )
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unmap <script> <SID>??
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" Extract current Ada word across multiple lines
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" AdaWord( [line, column] )\
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let s:AdaWordRegex = '\a\w*\(\_s*\.\_s*\a\w*\)*'
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let s:AdaComment = "\\v^(\"[^\"]*\"|'.'|[^\"']){-}\\zs\\s*--.*"
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function! AdaWord(...)
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if a:0 > 1
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let linenr = a:1
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let colnr = a:2 - 1
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else
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let linenr = line('.')
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let colnr = col('.') - 1
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endif
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let line = substitute( getline(linenr), s:AdaComment, '', '' )
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" Cope with tag searching for items in comments; if we are, don't loop
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" backards looking for previous lines
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if colnr > strlen(line)
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" We were in a comment
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let line = getline(linenr)
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let search_prev_lines = 0
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else
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let search_prev_lines = 1
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endif
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" Go backwards until we find a match (Ada ID) that *doesn't* include our
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" location - i.e., the previous ID. This is because the current 'correct'
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" match will toggle matching/not matching as we traverse characters
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" backwards. Thus, we have to find the previous unrelated match, exclude
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" it, then use the next full match (ours).
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" Remember to convert vim column 'colnr' [1..n] to string offset [0..(n-1)]
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" ... but start, here, one after the required char.
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let newcol = colnr + 1
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while 1
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let newcol = newcol - 1
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if newcol < 0
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" Have to include previous line from file
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let linenr = linenr - 1
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if linenr < 1 || !search_prev_lines
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" Start of file or matching in a comment
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let linenr = 1
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let newcol = 0
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let ourmatch = match( line, s:AdaWordRegex )
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break
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endif
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" Get previous line, and prepend it to our search string
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let newline = substitute( getline(linenr), s:AdaComment, '', '' )
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let newcol = strlen(newline) - 1
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let colnr = colnr + newcol
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let line = newline . line
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endif
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" Check to see if this is a match excluding 'us'
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let mend = newcol + matchend( strpart(line,newcol), s:AdaWordRegex ) - 1
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if mend >= newcol && mend < colnr
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" Yes
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let ourmatch = mend+1 + match( strpart(line,mend+1), s:AdaWordRegex )
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break
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endif
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endwhile
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" Got anything?
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if ourmatch < 0
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return ''
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else
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let line = strpart( line, ourmatch)
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endif
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" Now simply add further lines until the match gets no bigger
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let matchstr = matchstr( line, s:AdaWordRegex )
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let lastline = line('$')
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let linenr = line('.') + 1
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while linenr <= lastline
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let lastmatch = matchstr
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let line = line . substitute( getline(linenr), s:AdaComment, '', '' )
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let matchstr = matchstr( line, s:AdaWordRegex )
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if matchstr == lastmatch
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break
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endif
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endwhile
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" Strip whitespace & return
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return substitute( matchstr, '\s\+', '', 'g' )
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endfunction
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" Word tag - include '.' and if Ada make uppercase
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" Name allows a common JumpToTag() to look for an ft specific JumpToTag_ft().
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function! JumpToTag_ada(word,...)
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if a:word == ''
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" Get current word
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let word = AdaWord()
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if word == ''
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return
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endif
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else
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let word = a:word
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endif
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if a:0 > 0
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let mode = a:1
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else
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let mode = 'tj'
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endif
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let v:errmsg = ''
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execute 'silent!' mode word
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if v:errmsg != ''
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if v:errmsg =~ '^E426:' " Tag not found
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let ignorecase = &ignorecase
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set ignorecase
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execute mode word
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let &ignorecase = ignorecase
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else
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" Repeat to give error
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execute mode word
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endif
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endif
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endfunction
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" Word completion (^N/^R/^X^]) - force '.' inclusion
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function! s:AdaCompletion(cmd)
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set iskeyword+=46
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return a:cmd . "\<C-R>=<SNR>" . s:id . "_AdaCompletionEnd()\<CR>"
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endfunction
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function! s:AdaCompletionEnd()
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set iskeyword-=46
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return ''
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endfunction
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" Backspace at end of line after auto-inserted commentstring '-- ' wipes it
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function! s:AdaInsertBackspace()
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let line = getline('.')
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if col('.') > strlen(line) && match(line,'-- $') != -1 && match(&comments,'--') != -1
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return "\<bs>\<bs>\<bs>"
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else
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return "\<bs>"
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endif
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endfunction
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" Reset cpoptions
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let &cpoptions = s:cpoptions
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unlet s:cpoptions
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" vim: sts=2 sw=2 :
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