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- " Vim Ada plugin file
- " Language: Ada
- " Maintainer: Neil Bird <neil@fnxweb.com>
- " Last Change: 2001 September 18
- " Version: $Id: ada.vim,v 1.2 2001/09/18 07:57:04 nabird Exp $
-
- " Perform Ada specific completion & tagging.
- "
- " Provides mapping overrides for tag jumping that figure out the current
- " Ada object and tag jump to that, not the 'simple' vim word.
- " Similarly allows <Ctrl-N> matching of full-length ada entities from tags.
- " Exports 'AdaWord()' function to return full name of Ada entity under the
- " cursor( or at given line/column), stripping whitespace/newlines as necessary.
-
-
- " Only do this when not done yet for this buffer
- if exists("b:did_ftplugin")
- finish
- endif
-
- " Don't load another plugin for this buffer
- let b:did_ftplugin = 1
-
- " Temporarily set cpoptions to ensure the script loads OK
- let s:cpoptions = &cpoptions
- set cpo-=C
-
-
- " Make local tag mappings for this buffer (if not already set)
- if mapcheck('<C-]>','n') == ''
- nnoremap <unique> <buffer> <C-]> :call JumpToTag_ada('')<cr>
- endif
- if mapcheck('g<C-]>','n') == ''
- nnoremap <unique> <buffer> g<C-]> :call JumpToTag_ada('','stj')<cr>
- endif
-
- if mapcheck('<C-N>','i') == ''
- inoremap <unique> <buffer> <C-N> <C-R>=<SID>AdaCompletion("\<lt>C-N>")<cr>
- endif
- if mapcheck('<C-P>','i') == ''
- inoremap <unique> <buffer> <C-P> <C-R>=<SID>AdaCompletion("\<lt>C-P>")<cr>
- endif
- if mapcheck('<C-X><C-]>','i') == ''
- inoremap <unique> <buffer> <C-X><C-]> <C-R>=<SID>AdaCompletion("\<lt>C-X>\<lt>C-]>")<cr>
- endif
-
-
- " Only do this when not done yet for this buffer & matchit is used
- if ! exists("b:match_words") && exists("loaded_matchit")
- " The following lines enable the macros/matchit.vim plugin for
- " Ada-specific extended matching with the % key.
- let s:notend = '\%(\<end\s\+\)\@<!'
- let b:match_words=
- \ s:notend . '\<if\>:\<elsif\>:\<else\>:\<end\>\s\+\<if\>,' .
- \ s:notend . '\<case\>:\<when\>:\<end\>\s\+\<case\>,' .
- \ '\%(\<while\>.*\|\<for\>.*\|'.s:notend.'\)\<loop\>:\<end\>\s\+\<loop\>,' .
- \ '\%(\<do\>\|\<begin\>\):\<exception\>:\<end\>\s*\%($\|[;A-Z]\),' .
- \ s:notend . '\<record\>:\<end\>\s\+\<record\>'
- endif
-
-
- " Prevent re-load of functions
- if exists('s:id')
- finish
- endif
-
- " Get this script's unique id
- map <script> <SID>?? <SID>??
- let s:id = substitute( maparg('<SID>??'), '^<SNR>\(.*\)_??$', '\1', '' )
- unmap <script> <SID>??
-
-
- " Extract current Ada word across multiple lines
- " AdaWord( [line, column] )\
- let s:AdaWordRegex = '\a\w*\(\_s*\.\_s*\a\w*\)*'
- let s:AdaComment = "\\v^(\"[^\"]*\"|'.'|[^\"']){-}\\zs\\s*--.*"
-
- function! AdaWord(...)
- if a:0 > 1
- let linenr = a:1
- let colnr = a:2 - 1
- else
- let linenr = line('.')
- let colnr = col('.') - 1
- endif
- let line = substitute( getline(linenr), s:AdaComment, '', '' )
- " Cope with tag searching for items in comments; if we are, don't loop
- " backards looking for previous lines
- if colnr > strlen(line)
- " We were in a comment
- let line = getline(linenr)
- let search_prev_lines = 0
- else
- let search_prev_lines = 1
- endif
-
- " Go backwards until we find a match (Ada ID) that *doesn't* include our
- " location - i.e., the previous ID. This is because the current 'correct'
- " match will toggle matching/not matching as we traverse characters
- " backwards. Thus, we have to find the previous unrelated match, exclude
- " it, then use the next full match (ours).
- " Remember to convert vim column 'colnr' [1..n] to string offset [0..(n-1)]
- " ... but start, here, one after the required char.
- let newcol = colnr + 1
- while 1
- let newcol = newcol - 1
- if newcol < 0
- " Have to include previous line from file
- let linenr = linenr - 1
- if linenr < 1 || !search_prev_lines
- " Start of file or matching in a comment
- let linenr = 1
- let newcol = 0
- let ourmatch = match( line, s:AdaWordRegex )
- break
- endif
- " Get previous line, and prepend it to our search string
- let newline = substitute( getline(linenr), s:AdaComment, '', '' )
- let newcol = strlen(newline) - 1
- let colnr = colnr + newcol
- let line = newline . line
- endif
- " Check to see if this is a match excluding 'us'
- let mend = newcol + matchend( strpart(line,newcol), s:AdaWordRegex ) - 1
- if mend >= newcol && mend < colnr
- " Yes
- let ourmatch = mend+1 + match( strpart(line,mend+1), s:AdaWordRegex )
- break
- endif
- endwhile
-
- " Got anything?
- if ourmatch < 0
- return ''
- else
- let line = strpart( line, ourmatch)
- endif
-
- " Now simply add further lines until the match gets no bigger
- let matchstr = matchstr( line, s:AdaWordRegex )
- let lastline = line('$')
- let linenr = line('.') + 1
- while linenr <= lastline
- let lastmatch = matchstr
- let line = line . substitute( getline(linenr), s:AdaComment, '', '' )
- let matchstr = matchstr( line, s:AdaWordRegex )
- if matchstr == lastmatch
- break
- endif
- endwhile
-
- " Strip whitespace & return
- return substitute( matchstr, '\s\+', '', 'g' )
- endfunction
-
-
- " Word tag - include '.' and if Ada make uppercase
- " Name allows a common JumpToTag() to look for an ft specific JumpToTag_ft().
- function! JumpToTag_ada(word,...)
- if a:word == ''
- " Get current word
- let word = AdaWord()
- if word == ''
- return
- endif
- else
- let word = a:word
- endif
- if a:0 > 0
- let mode = a:1
- else
- let mode = 'tj'
- endif
-
- let v:errmsg = ''
- execute 'silent!' mode word
- if v:errmsg != ''
- if v:errmsg =~ '^E426:' " Tag not found
- let ignorecase = &ignorecase
- set ignorecase
- execute mode word
- let &ignorecase = ignorecase
- else
- " Repeat to give error
- execute mode word
- endif
- endif
- endfunction
-
-
- " word completion (^N/^R/^X^]) - force '.' inclusion
- function! s:AdaCompletion(cmd)
- set iskeyword+=46
- return a:cmd . "\<C-R>=<SNR>" . s:id . "_AdaCompletionEnd()\<CR>"
- endfunction
- function! s:AdaCompletionEnd()
- set iskeyword-=46
- return ''
- endfunction
-
- " Reset cpoptions
- let &cpoptions = s:cpoptions
- unlet s:cpoptions
-
- " vim: sts=2 sw=2 :
-