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" matchit.vim: (global plugin) Extended "%" matching
" Last Change: Fri Jan 25 10:00 AM 2008 EST
" Maintainer: Benji Fisher PhD <benji@member.AMS.org>
" Version: 1.13.2, for Vim 6.3+
" URL: http://www.vim.org/script.php?script_id=39
" Documentation:
" The documentation is in a separate file, matchit.txt .
" Credits:
" Vim editor by Bram Moolenaar (Thanks, Bram!)
" Original script and design by Raul Segura Acevedo
" Support for comments by Douglas Potts
" Support for back references and other improvements by Benji Fisher
" Support for many languages by Johannes Zellner
" Suggestions for improvement, bug reports, and support for additional
" languages by Jordi-Albert Batalla, Neil Bird, Servatius Brandt, Mark
" Collett, Stephen Wall, Dany St-Amant, Yuheng Xie, and Johannes Zellner.
" Debugging:
" If you'd like to try the built-in debugging commands...
" :MatchDebug to activate debugging for the current buffer
" This saves the values of several key script variables as buffer-local
" variables. See the MatchDebug() function, below, for details.
" TODO: I should think about multi-line patterns for b:match_words.
" This would require an option: how many lines to scan (default 1).
" This would be useful for Python, maybe also for *ML.
" TODO: Maybe I should add a menu so that people will actually use some of
" the features that I have implemented.
" TODO: Eliminate the MultiMatch function. Add yet another argument to
" Match_wrapper() instead.
" TODO: Allow :let b:match_words = '\(\(foo\)\(bar\)\):\3\2:end\1'
" TODO: Make backrefs safer by using '\V' (very no-magic).
" TODO: Add a level of indirection, so that custom % scripts can use my
" work but extend it.
" allow user to prevent loading
" and prevent duplicate loading
if exists("loaded_matchit") || &cp
finish
endif
let loaded_matchit = 1
let s:last_mps = ""
let s:last_words = ":"
let s:save_cpo = &cpo
set cpo&vim
nnoremap <silent> % :<C-U>call <SID>Match_wrapper('',1,'n') <CR>
nnoremap <silent> g% :<C-U>call <SID>Match_wrapper('',0,'n') <CR>
vnoremap <silent> % :<C-U>call <SID>Match_wrapper('',1,'v') <CR>m'gv``
vnoremap <silent> g% :<C-U>call <SID>Match_wrapper('',0,'v') <CR>m'gv``
onoremap <silent> % v:<C-U>call <SID>Match_wrapper('',1,'o') <CR>
onoremap <silent> g% v:<C-U>call <SID>Match_wrapper('',0,'o') <CR>
" Analogues of [{ and ]} using matching patterns:
nnoremap <silent> [% :<C-U>call <SID>MultiMatch("bW", "n") <CR>
nnoremap <silent> ]% :<C-U>call <SID>MultiMatch("W", "n") <CR>
vmap [% <Esc>[%m'gv``
vmap ]% <Esc>]%m'gv``
" vnoremap <silent> [% :<C-U>call <SID>MultiMatch("bW", "v") <CR>m'gv``
" vnoremap <silent> ]% :<C-U>call <SID>MultiMatch("W", "v") <CR>m'gv``
onoremap <silent> [% v:<C-U>call <SID>MultiMatch("bW", "o") <CR>
onoremap <silent> ]% v:<C-U>call <SID>MultiMatch("W", "o") <CR>
" text object:
vmap a% <Esc>[%v]%
" Auto-complete mappings: (not yet "ready for prime time")
" TODO Read :help write-plugin for the "right" way to let the user
" specify a key binding.
" let g:match_auto = '<C-]>'
" let g:match_autoCR = '<C-CR>'
" if exists("g:match_auto")
" execute "inoremap " . g:match_auto . ' x<Esc>"=<SID>Autocomplete()<CR>Pls'
" endif
" if exists("g:match_autoCR")
" execute "inoremap " . g:match_autoCR . ' <CR><C-R>=<SID>Autocomplete()<CR>'
" endif
" if exists("g:match_gthhoh")
" execute "inoremap " . g:match_gthhoh . ' <C-O>:call <SID>Gthhoh()<CR>'
" endif " gthhoh = "Get the heck out of here!"
let s:notslash = '\\\@<!\%(\\\\\)*'
function! s:Match_wrapper(word, forward, mode) range
" In s:CleanUp(), :execute "set" restore_options .
let restore_options = (&ic ? " " : " no") . "ignorecase"
if exists("b:match_ignorecase")
let &ignorecase = b:match_ignorecase
endif
let restore_options = " ve=" . &ve . restore_options
set ve=
" If this function was called from Visual mode, make sure that the cursor
" is at the correct end of the Visual range:
if a:mode == "v"
execute "normal! gv\<Esc>"
endif
" In s:CleanUp(), we may need to check whether the cursor moved forward.
let startline = line(".")
let startcol = col(".")
" Use default behavior if called with a count.
if v:count
exe "normal! " . v:count . "%"
return s:CleanUp(restore_options, a:mode, startline, startcol)
end
" First step: if not already done, set the script variables
" s:do_BR flag for whether there are backrefs
" s:pat parsed version of b:match_words
" s:all regexp based on s:pat and the default groups
"
if !exists("b:match_words") || b:match_words == ""
let match_words = ""
" Allow b:match_words = "GetVimMatchWords()" .
elseif b:match_words =~ ":"
let match_words = b:match_words
else
execute "let match_words =" b:match_words
endif
" Thanks to Preben "Peppe" Guldberg and Bram Moolenaar for this suggestion!
if (match_words != s:last_words) || (&mps != s:last_mps) ||
\ exists("b:match_debug")
let s:last_words = match_words
let s:last_mps = &mps
" The next several lines were here before
" BF started messing with this script.
" quote the special chars in 'matchpairs', replace [,:] with \| and then
" append the builtin pairs (/*, */, #if, #ifdef, #else, #elif, #endif)
" let default = substitute(escape(&mps, '[$^.*~\\/?]'), '[,:]\+',
" \ '\\|', 'g').'\|\/\*\|\*\/\|#if\>\|#ifdef\>\|#else\>\|#elif\>\|#endif\>'
let default = escape(&mps, '[$^.*~\\/?]') . (strlen(&mps) ? "," : "") .
\ '\/\*:\*\/,#if\%(def\)\=:#else\>:#elif\>:#endif\>'
" s:all = pattern with all the keywords
let match_words = match_words . (strlen(match_words) ? "," : "") . default
if match_words !~ s:notslash . '\\\d'
let s:do_BR = 0
let s:pat = match_words
else
let s:do_BR = 1
let s:pat = s:ParseWords(match_words)
endif
let s:all = substitute(s:pat, s:notslash . '\zs[,:]\+', '\\|', 'g')
let s:all = '\%(' . s:all . '\)'
" let s:all = '\%(' . substitute(s:all, '\\\ze[,:]', '', 'g') . '\)'
if exists("b:match_debug")
let b:match_pat = s:pat
endif
endif
" Second step: set the following local variables:
" matchline = line on which the cursor started
" curcol = number of characters before match
" prefix = regexp for start of line to start of match
" suffix = regexp for end of match to end of line
" Require match to end on or after the cursor and prefer it to
" start on or before the cursor.
let matchline = getline(startline)
if a:word != ''
" word given
if a:word !~ s:all
echohl WarningMsg|echo 'Missing rule for word:"'.a:word.'"'|echohl NONE
return s:CleanUp(restore_options, a:mode, startline, startcol)
endif
let matchline = a:word
let curcol = 0
let prefix = '^\%('
let suffix = '\)$'
" Now the case when "word" is not given
else " Find the match that ends on or after the cursor and set curcol.
let regexp = s:Wholematch(matchline, s:all, startcol-1)
let curcol = match(matchline, regexp)
" If there is no match, give up.
if curcol == -1
return s:CleanUp(restore_options, a:mode, startline, startcol)
endif
let endcol = matchend(matchline, regexp)
let suf = strlen(matchline) - endcol
let prefix = (curcol ? '^.*\%' . (curcol + 1) . 'c\%(' : '^\%(')
let suffix = (suf ? '\)\%' . (endcol + 1) . 'c.*$' : '\)$')
endif
if exists("b:match_debug")
let b:match_match = matchstr(matchline, regexp)
let b:match_col = curcol+1
endif
" Third step: Find the group and single word that match, and the original
" (backref) versions of these. Then, resolve the backrefs.
" Set the following local variable:
" group = colon-separated list of patterns, one of which matches
" = ini:mid:fin or ini:fin
"
" Reconstruct the version with unresolved backrefs.
let patBR = substitute(match_words.',',
\ s:notslash.'\zs[,:]*,[,:]*', ',', 'g')
let patBR = substitute(patBR, s:notslash.'\zs:\{2,}', ':', 'g')
" Now, set group and groupBR to the matching group: 'if:endif' or
" 'while:endwhile' or whatever. A bit of a kluge: s:Choose() returns
" group . "," . groupBR, and we pick it apart.
let group = s:Choose(s:pat, matchline, ",", ":", prefix, suffix, patBR)
let i = matchend(group, s:notslash . ",")
let groupBR = strpart(group, i)
let group = strpart(group, 0, i-1)
" Now, matchline =~ prefix . substitute(group,':','\|','g') . suffix
if s:do_BR " Do the hard part: resolve those backrefs!
let group = s:InsertRefs(groupBR, prefix, group, suffix, matchline)
endif
if exists("b:match_debug")
let b:match_wholeBR = groupBR
let i = matchend(groupBR, s:notslash . ":")
let b:match_iniBR = strpart(groupBR, 0, i-1)
endif
" Fourth step: Set the arguments for searchpair().
let i = matchend(group, s:notslash . ":")
let j = matchend(group, '.*' . s:notslash . ":")
let ini = strpart(group, 0, i-1)
let mid = substitute(strpart(group, i,j-i-1), s:notslash.'\zs:', '\\|', 'g')
let fin = strpart(group, j)
"Un-escape the remaining , and : characters.
let ini = substitute(ini, s:notslash . '\zs\\\(:\|,\)', '\1', 'g')
let mid = substitute(mid, s:notslash . '\zs\\\(:\|,\)', '\1', 'g')
let fin = substitute(fin, s:notslash . '\zs\\\(:\|,\)', '\1', 'g')
" searchpair() requires that these patterns avoid \(\) groups.
let ini = substitute(ini, s:notslash . '\zs\\(', '\\%(', 'g')
let mid = substitute(mid, s:notslash . '\zs\\(', '\\%(', 'g')
let fin = substitute(fin, s:notslash . '\zs\\(', '\\%(', 'g')
" Set mid. This is optimized for readability, not micro-efficiency!
if a:forward && matchline =~ prefix . fin . suffix
\ || !a:forward && matchline =~ prefix . ini . suffix
let mid = ""
endif
" Set flag. This is optimized for readability, not micro-efficiency!
if a:forward && matchline =~ prefix . fin . suffix
\ || !a:forward && matchline !~ prefix . ini . suffix
let flag = "bW"
else
let flag = "W"
endif
" Set skip.
if exists("b:match_skip")
let skip = b:match_skip
elseif exists("b:match_comment") " backwards compatibility and testing!
let skip = "r:" . b:match_comment
else
let skip = 's:comment\|string'
endif
let skip = s:ParseSkip(skip)
if exists("b:match_debug")
let b:match_ini = ini
let b:match_tail = (strlen(mid) ? mid.'\|' : '') . fin
endif
" Fifth step: actually start moving the cursor and call searchpair().
" Later, :execute restore_cursor to get to the original screen.
let restore_cursor = virtcol(".") . "|"
normal! g0
let restore_cursor = line(".") . "G" . virtcol(".") . "|zs" . restore_cursor
normal! H
let restore_cursor = "normal!" . line(".") . "Gzt" . restore_cursor
execute restore_cursor
call cursor(0, curcol + 1)
" normal! 0
" if curcol
" execute "normal!" . curcol . "l"
" endif
if skip =~ 'synID' && !(has("syntax") && exists("g:syntax_on"))
let skip = "0"
else
execute "if " . skip . "| let skip = '0' | endif"
endif
let sp_return = searchpair(ini, mid, fin, flag, skip)
let final_position = "call cursor(" . line(".") . "," . col(".") . ")"
" Restore cursor position and original screen.
execute restore_cursor
normal! m'
if sp_return > 0
execute final_position
endif
return s:CleanUp(restore_options, a:mode, startline, startcol, mid.'\|'.fin)
endfun
" Restore options and do some special handling for Operator-pending mode.
" The optional argument is the tail of the matching group.
fun! s:CleanUp(options, mode, startline, startcol, ...)
execute "set" a:options
" Open folds, if appropriate.
if a:mode != "o"
if &foldopen =~ "percent"
normal! zv
endif
" In Operator-pending mode, we want to include the whole match
" (for example, d%).
" This is only a problem if we end up moving in the forward direction.
elseif (a:startline < line(".")) ||
\ (a:startline == line(".") && a:startcol < col("."))
if a:0
" Check whether the match is a single character. If not, move to the
" end of the match.
let matchline = getline(".")
let currcol = col(".")
let regexp = s:Wholematch(matchline, a:1, currcol-1)
let endcol = matchend(matchline, regexp)
if endcol > currcol " This is NOT off by one!
execute "normal!" . (endcol - currcol) . "l"
endif
endif " a:0
endif " a:mode != "o" && etc.
return 0
endfun
" Example (simplified HTML patterns): if
" a:groupBR = '<\(\k\+\)>:</\1>'
" a:prefix = '^.\{3}\('
" a:group = '<\(\k\+\)>:</\(\k\+\)>'
" a:suffix = '\).\{2}$'
" a:matchline = "123<tag>12" or "123</tag>12"
" then extract "tag" from a:matchline and return "<tag>:</tag>" .
fun! s:InsertRefs(groupBR, prefix, group, suffix, matchline)
if a:matchline !~ a:prefix .
\ substitute(a:group, s:notslash . '\zs:', '\\|', 'g') . a:suffix
return a:group
endif
let i = matchend(a:groupBR, s:notslash . ':')
let ini = strpart(a:groupBR, 0, i-1)
let tailBR = strpart(a:groupBR, i)
let word = s:Choose(a:group, a:matchline, ":", "", a:prefix, a:suffix,
\ a:groupBR)
let i = matchend(word, s:notslash . ":")
let wordBR = strpart(word, i)
let word = strpart(word, 0, i-1)
" Now, a:matchline =~ a:prefix . word . a:suffix
if wordBR != ini
let table = s:Resolve(ini, wordBR, "table")
else
" let table = "----------"
let table = ""
let d = 0
while d < 10
if tailBR =~ s:notslash . '\\' . d
" let table[d] = d
let table = table . d
else
let table = table . "-"
endif
let d = d + 1
endwhile
endif
let d = 9
while d
if table[d] != "-"
let backref = substitute(a:matchline, a:prefix.word.a:suffix,
\ '\'.table[d], "")
" Are there any other characters that should be escaped?
let backref = escape(backref, '*,:')
execute s:Ref(ini, d, "start", "len")
let ini = strpart(ini, 0, start) . backref . strpart(ini, start+len)
let tailBR = substitute(tailBR, s:notslash . '\zs\\' . d,
\ escape(backref, '\\'), 'g')
endif
let d = d-1
endwhile
if exists("b:match_debug")
if s:do_BR
let b:match_table = table
let b:match_word = word
else
let b:match_table = ""
let b:match_word = ""
endif
endif
return ini . ":" . tailBR
endfun
" Input a comma-separated list of groups with backrefs, such as
" a:groups = '\(foo\):end\1,\(bar\):end\1'
" and return a comma-separated list of groups with backrefs replaced:
" return '\(foo\):end\(foo\),\(bar\):end\(bar\)'
fun! s:ParseWords(groups)
let groups = substitute(a:groups.",", s:notslash.'\zs[,:]*,[,:]*', ',', 'g')
let groups = substitute(groups, s:notslash . '\zs:\{2,}', ':', 'g')
let parsed = ""
while groups =~ '[^,:]'
let i = matchend(groups, s:notslash . ':')
let j = matchend(groups, s:notslash . ',')
let ini = strpart(groups, 0, i-1)
let tail = strpart(groups, i, j-i-1) . ":"
let groups = strpart(groups, j)
let parsed = parsed . ini
let i = matchend(tail, s:notslash . ':')
while i != -1
" In 'if:else:endif', ini='if' and word='else' and then word='endif'.
let word = strpart(tail, 0, i-1)
let tail = strpart(tail, i)
let i = matchend(tail, s:notslash . ':')
let parsed = parsed . ":" . s:Resolve(ini, word, "word")
endwhile " Now, tail has been used up.
let parsed = parsed . ","
endwhile " groups =~ '[^,:]'
let parsed = substitute(parsed, ',$', '', '')
return parsed
endfun
" TODO I think this can be simplified and/or made more efficient.
" TODO What should I do if a:start is out of range?
" Return a regexp that matches all of a:string, such that
" matchstr(a:string, regexp) represents the match for a:pat that starts
" as close to a:start as possible, before being preferred to after, and
" ends after a:start .
" Usage:
" let regexp = s:Wholematch(getline("."), 'foo\|bar', col(".")-1)
" let i = match(getline("."), regexp)
" let j = matchend(getline("."), regexp)
" let match = matchstr(getline("."), regexp)
fun! s:Wholematch(string, pat, start)
let group = '\%(' . a:pat . '\)'
let prefix = (a:start ? '\(^.*\%<' . (a:start + 2) . 'c\)\zs' : '^')
let len = strlen(a:string)
let suffix = (a:start+1 < len ? '\(\%>'.(a:start+1).'c.*$\)\@=' : '$')
if a:string !~ prefix . group . suffix
let prefix = ''
endif
return prefix . group . suffix
endfun
" No extra arguments: s:Ref(string, d) will
" find the d'th occurrence of '\(' and return it, along with everything up
" to and including the matching '\)'.
" One argument: s:Ref(string, d, "start") returns the index of the start
" of the d'th '\(' and any other argument returns the length of the group.
" Two arguments: s:Ref(string, d, "foo", "bar") returns a string to be
" executed, having the effect of
" :let foo = s:Ref(string, d, "start")
" :let bar = s:Ref(string, d, "len")
fun! s:Ref(string, d, ...)
let len = strlen(a:string)
if a:d == 0
let start = 0
else
let cnt = a:d
let match = a:string
while cnt
let cnt = cnt - 1
let index = matchend(match, s:notslash . '\\(')
if index == -1
return ""
endif
let match = strpart(match, index)
endwhile
let start = len - strlen(match)
if a:0 == 1 && a:1 == "start"
return start - 2
endif
let cnt = 1
while cnt
let index = matchend(match, s:notslash . '\\(\|\\)') - 1
if index == -2
return ""
endif
" Increment if an open, decrement if a ')':
let cnt = cnt + (match[index]=="(" ? 1 : -1) " ')'
" let cnt = stridx('0(', match[index]) + cnt
let match = strpart(match, index+1)
endwhile
let start = start - 2
let len = len - start - strlen(match)
endif
if a:0 == 1
return len
elseif a:0 == 2
return "let " . a:1 . "=" . start . "| let " . a:2 . "=" . len
else
return strpart(a:string, start, len)
endif
endfun
" Count the number of disjoint copies of pattern in string.
" If the pattern is a literal string and contains no '0' or '1' characters
" then s:Count(string, pattern, '0', '1') should be faster than
" s:Count(string, pattern).
fun! s:Count(string, pattern, ...)
let pat = escape(a:pattern, '\\')
if a:0 > 1
let foo = substitute(a:string, '[^'.a:pattern.']', "a:1", "g")
let foo = substitute(a:string, pat, a:2, "g")
let foo = substitute(foo, '[^' . a:2 . ']', "", "g")
return strlen(foo)
endif
let result = 0
let foo = a:string
let index = matchend(foo, pat)
while index != -1
let result = result + 1
let foo = strpart(foo, index)
let index = matchend(foo, pat)
endwhile
return result
endfun
" s:Resolve('\(a\)\(b\)', '\(c\)\2\1\1\2') should return table.word, where
" word = '\(c\)\(b\)\(a\)\3\2' and table = '-32-------'. That is, the first
" '\1' in target is replaced by '\(a\)' in word, table[1] = 3, and this
" indicates that all other instances of '\1' in target are to be replaced
" by '\3'. The hard part is dealing with nesting...
" Note that ":" is an illegal character for source and target,
" unless it is preceded by "\".
fun! s:Resolve(source, target, output)
let word = a:target
let i = matchend(word, s:notslash . '\\\d') - 1
let table = "----------"
while i != -2 " There are back references to be replaced.
let d = word[i]
let backref = s:Ref(a:source, d)
" The idea is to replace '\d' with backref. Before we do this,
" replace any \(\) groups in backref with :1, :2, ... if they
" correspond to the first, second, ... group already inserted
" into backref. Later, replace :1 with \1 and so on. The group
" number w+b within backref corresponds to the group number
" s within a:source.
" w = number of '\(' in word before the current one
let w = s:Count(
\ substitute(strpart(word, 0, i-1), '\\\\', '', 'g'), '\(', '1')
let b = 1 " number of the current '\(' in backref
let s = d " number of the current '\(' in a:source
while b <= s:Count(substitute(backref, '\\\\', '', 'g'), '\(', '1')
\ && s < 10
if table[s] == "-"
if w + b < 10
" let table[s] = w + b
let table = strpart(table, 0, s) . (w+b) . strpart(table, s+1)
endif
let b = b + 1
let s = s + 1
else
execute s:Ref(backref, b, "start", "len")
let ref = strpart(backref, start, len)
let backref = strpart(backref, 0, start) . ":". table[s]
\ . strpart(backref, start+len)
let s = s + s:Count(substitute(ref, '\\\\', '', 'g'), '\(', '1')
endif
endwhile
let word = strpart(word, 0, i-1) . backref . strpart(word, i+1)
let i = matchend(word, s:notslash . '\\\d') - 1
endwhile
let word = substitute(word, s:notslash . '\zs:', '\\', 'g')
if a:output == "table"
return table
elseif a:output == "word"
return word
else
return table . word
endif
endfun
" Assume a:comma = ",". Then the format for a:patterns and a:1 is
" a:patterns = "<pat1>,<pat2>,..."
" a:1 = "<alt1>,<alt2>,..."
" If <patn> is the first pattern that matches a:string then return <patn>
" if no optional arguments are given; return <patn>,<altn> if a:1 is given.
fun! s:Choose(patterns, string, comma, branch, prefix, suffix, ...)
let tail = (a:patterns =~ a:comma."$" ? a:patterns : a:patterns . a:comma)
let i = matchend(tail, s:notslash . a:comma)
if a:0
let alttail = (a:1 =~ a:comma."$" ? a:1 : a:1 . a:comma)
let j = matchend(alttail, s:notslash . a:comma)
endif
let current = strpart(tail, 0, i-1)
if a:branch == ""
let currpat = current
else
let currpat = substitute(current, s:notslash . a:branch, '\\|', 'g')
endif
while a:string !~ a:prefix . currpat . a:suffix
let tail = strpart(tail, i)
let i = matchend(tail, s:notslash . a:comma)
if i == -1
return -1
endif
let current = strpart(tail, 0, i-1)
if a:branch == ""
let currpat = current
else
let currpat = substitute(current, s:notslash . a:branch, '\\|', 'g')
endif
if a:0
let alttail = strpart(alttail, j)
let j = matchend(alttail, s:notslash . a:comma)
endif
endwhile
if a:0
let current = current . a:comma . strpart(alttail, 0, j-1)
endif
return current
endfun
" Call this function to turn on debugging information. Every time the main
" script is run, buffer variables will be saved. These can be used directly
" or viewed using the menu items below.
if !exists(":MatchDebug")
command! -nargs=0 MatchDebug call s:Match_debug()
endif
fun! s:Match_debug()
let b:match_debug = 1 " Save debugging information.
" pat = all of b:match_words with backrefs parsed
amenu &Matchit.&pat :echo b:match_pat<CR>
" match = bit of text that is recognized as a match
amenu &Matchit.&match :echo b:match_match<CR>
" curcol = cursor column of the start of the matching text
amenu &Matchit.&curcol :echo b:match_col<CR>
" wholeBR = matching group, original version
amenu &Matchit.wh&oleBR :echo b:match_wholeBR<CR>
" iniBR = 'if' piece, original version
amenu &Matchit.ini&BR :echo b:match_iniBR<CR>
" ini = 'if' piece, with all backrefs resolved from match
amenu &Matchit.&ini :echo b:match_ini<CR>
" tail = 'else\|endif' piece, with all backrefs resolved from match
amenu &Matchit.&tail :echo b:match_tail<CR>
" fin = 'endif' piece, with all backrefs resolved from match
amenu &Matchit.&word :echo b:match_word<CR>
" '\'.d in ini refers to the same thing as '\'.table[d] in word.
amenu &Matchit.t&able :echo '0:' . b:match_table . ':9'<CR>
endfun
" Jump to the nearest unmatched "(" or "if" or "<tag>" if a:spflag == "bW"
" or the nearest unmatched "</tag>" or "endif" or ")" if a:spflag == "W".
" Return a "mark" for the original position, so that
" let m = MultiMatch("bW", "n") ... execute m
" will return to the original position. If there is a problem, do not
" move the cursor and return "", unless a count is given, in which case
" go up or down as many levels as possible and again return "".
" TODO This relies on the same patterns as % matching. It might be a good
" idea to give it its own matching patterns.
fun! s:MultiMatch(spflag, mode)
if !exists("b:match_words") || b:match_words == ""
return ""
end
let restore_options = (&ic ? "" : "no") . "ignorecase"
if exists("b:match_ignorecase")
let &ignorecase = b:match_ignorecase
endif
let startline = line(".")
let startcol = col(".")
" First step: if not already done, set the script variables
" s:do_BR flag for whether there are backrefs
" s:pat parsed version of b:match_words
" s:all regexp based on s:pat and the default groups
" This part is copied and slightly modified from s:Match_wrapper().
let default = escape(&mps, '[$^.*~\\/?]') . (strlen(&mps) ? "," : "") .
\ '\/\*:\*\/,#if\%(def\)\=:#else\>:#elif\>:#endif\>'
" Allow b:match_words = "GetVimMatchWords()" .
if b:match_words =~ ":"
let match_words = b:match_words
else
execute "let match_words =" b:match_words
endif
if (match_words != s:last_words) || (&mps != s:last_mps) ||
\ exists("b:match_debug")
let s:last_words = match_words
let s:last_mps = &mps
if match_words !~ s:notslash . '\\\d'
let s:do_BR = 0
let s:pat = match_words
else
let s:do_BR = 1
let s:pat = s:ParseWords(match_words)
endif
let s:all = '\%(' . substitute(s:pat . (strlen(s:pat)?",":"") . default,
\ '[,:]\+','\\|','g') . '\)'
if exists("b:match_debug")
let b:match_pat = s:pat
endif
endif
" Second step: figure out the patterns for searchpair()
" and save the screen, cursor position, and 'ignorecase'.
" - TODO: A lot of this is copied from s:Match_wrapper().
" - maybe even more functionality should be split off
" - into separate functions!
let cdefault = (s:pat =~ '[^,]$' ? "," : "") . default
let open = substitute(s:pat . cdefault,
\ s:notslash . '\zs:.\{-}' . s:notslash . ',', '\\),\\(', 'g')
let open = '\(' . substitute(open, s:notslash . '\zs:.*$', '\\)', '')
let close = substitute(s:pat . cdefault,
\ s:notslash . '\zs,.\{-}' . s:notslash . ':', '\\),\\(', 'g')
let close = substitute(close, '^.\{-}' . s:notslash . ':', '\\(', '') . '\)'
if exists("b:match_skip")
let skip = b:match_skip
elseif exists("b:match_comment") " backwards compatibility and testing!
let skip = "r:" . b:match_comment
else
let skip = 's:comment\|string'
endif
let skip = s:ParseSkip(skip)
" let restore_cursor = line(".") . "G" . virtcol(".") . "|"
" normal! H
" let restore_cursor = "normal!" . line(".") . "Gzt" . restore_cursor
let restore_cursor = virtcol(".") . "|"
normal! g0
let restore_cursor = line(".") . "G" . virtcol(".") . "|zs" . restore_cursor
normal! H
let restore_cursor = "normal!" . line(".") . "Gzt" . restore_cursor
execute restore_cursor
" Third step: call searchpair().
" Replace '\('--but not '\\('--with '\%(' and ',' with '\|'.
let openpat = substitute(open, '\(\\\@<!\(\\\\\)*\)\@<=\\(', '\\%(', 'g')
let openpat = substitute(openpat, ',', '\\|', 'g')
let closepat = substitute(close, '\(\\\@<!\(\\\\\)*\)\@<=\\(', '\\%(', 'g')
let closepat = substitute(closepat, ',', '\\|', 'g')
if skip =~ 'synID' && !(has("syntax") && exists("g:syntax_on"))
let skip = '0'
else
execute "if " . skip . "| let skip = '0' | endif"
endif
mark '
let level = v:count1
while level
if searchpair(openpat, '', closepat, a:spflag, skip) < 1
call s:CleanUp(restore_options, a:mode, startline, startcol)
return ""
endif
let level = level - 1
endwhile
" Restore options and return a string to restore the original position.
call s:CleanUp(restore_options, a:mode, startline, startcol)
return restore_cursor
endfun
" Search backwards for "if" or "while" or "<tag>" or ...
" and return "endif" or "endwhile" or "</tag>" or ... .
" For now, this uses b:match_words and the same script variables
" as s:Match_wrapper() . Later, it may get its own patterns,
" either from a buffer variable or passed as arguments.
" fun! s:Autocomplete()
" echo "autocomplete not yet implemented :-("
" if !exists("b:match_words") || b:match_words == ""
" return ""
" end
" let startpos = s:MultiMatch("bW")
"
" if startpos == ""
" return ""
" endif
" " - TODO: figure out whether 'if' or '<tag>' matched, and construct
" " - the appropriate closing.
" let matchline = getline(".")
" let curcol = col(".") - 1
" " - TODO: Change the s:all argument if there is a new set of match pats.
" let regexp = s:Wholematch(matchline, s:all, curcol)
" let suf = strlen(matchline) - matchend(matchline, regexp)
" let prefix = (curcol ? '^.\{' . curcol . '}\%(' : '^\%(')
" let suffix = (suf ? '\).\{' . suf . '}$' : '\)$')
" " Reconstruct the version with unresolved backrefs.
" let patBR = substitute(b:match_words.',', '[,:]*,[,:]*', ',', 'g')
" let patBR = substitute(patBR, ':\{2,}', ':', "g")
" " Now, set group and groupBR to the matching group: 'if:endif' or
" " 'while:endwhile' or whatever.
" let group = s:Choose(s:pat, matchline, ",", ":", prefix, suffix, patBR)
" let i = matchend(group, s:notslash . ",")
" let groupBR = strpart(group, i)
" let group = strpart(group, 0, i-1)
" " Now, matchline =~ prefix . substitute(group,':','\|','g') . suffix
" if s:do_BR
" let group = s:InsertRefs(groupBR, prefix, group, suffix, matchline)
" endif
" " let g:group = group
"
" " - TODO: Construct the closing from group.
" let fake = "end" . expand("<cword>")
" execute startpos
" return fake
" endfun
" Close all open structures. "Get the heck out of here!"
" fun! s:Gthhoh()
" let close = s:Autocomplete()
" while strlen(close)
" put=close
" let close = s:Autocomplete()
" endwhile
" endfun
" Parse special strings as typical skip arguments for searchpair():
" s:foo becomes (current syntax item) =~ foo
" S:foo becomes (current syntax item) !~ foo
" r:foo becomes (line before cursor) =~ foo
" R:foo becomes (line before cursor) !~ foo
fun! s:ParseSkip(str)
let skip = a:str
if skip[1] == ":"
if skip[0] == "s"
let skip = "synIDattr(synID(line('.'),col('.'),1),'name') =~? '" .
\ strpart(skip,2) . "'"
elseif skip[0] == "S"
let skip = "synIDattr(synID(line('.'),col('.'),1),'name') !~? '" .
\ strpart(skip,2) . "'"
elseif skip[0] == "r"
let skip = "strpart(getline('.'),0,col('.'))=~'" . strpart(skip,2). "'"
elseif skip[0] == "R"
let skip = "strpart(getline('.'),0,col('.'))!~'" . strpart(skip,2). "'"
endif
endif
return skip
endfun
let &cpo = s:save_cpo
" vim:sts=2:sw=2:
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