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Diffstat (limited to 'vim73/plugin/matchparen.vim')
| -rw-r--r-- | vim73/plugin/matchparen.vim | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/vim73/plugin/matchparen.vim b/vim73/plugin/matchparen.vim new file mode 100644 index 0000000..3cc732b --- /dev/null +++ b/vim73/plugin/matchparen.vim @@ -0,0 +1,152 @@ +" Vim plugin for showing matching parens +" Maintainer: Bram Moolenaar <Bram@vim.org> +" Last Change: 2010 Nov 16 + +" Exit quickly when: +" - this plugin was already loaded (or disabled) +" - when 'compatible' is set +" - the "CursorMoved" autocmd event is not availble. +if exists("g:loaded_matchparen") || &cp || !exists("##CursorMoved") + finish +endif +let g:loaded_matchparen = 1 + +augroup matchparen + " Replace all matchparen autocommands + autocmd! CursorMoved,CursorMovedI,WinEnter * call s:Highlight_Matching_Pair() +augroup END + +" Skip the rest if it was already done. +if exists("*s:Highlight_Matching_Pair") + finish +endif + +let s:cpo_save = &cpo +set cpo-=C + +" The function that is invoked (very often) to define a ":match" highlighting +" for any matching paren. +function! s:Highlight_Matching_Pair() + " Remove any previous match. + if exists('w:paren_hl_on') && w:paren_hl_on + 3match none + let w:paren_hl_on = 0 + endif + + " Avoid that we remove the popup menu. + " Return when there are no colors (looks like the cursor jumps). + if pumvisible() || (&t_Co < 8 && !has("gui_running")) + return + endif + + " Get the character under the cursor and check if it's in 'matchpairs'. + let c_lnum = line('.') + let c_col = col('.') + let before = 0 + + let c = getline(c_lnum)[c_col - 1] + let plist = split(&matchpairs, '.\zs[:,]') + let i = index(plist, c) + if i < 0 + " not found, in Insert mode try character before the cursor + if c_col > 1 && (mode() == 'i' || mode() == 'R') + let before = 1 + let c = getline(c_lnum)[c_col - 2] + let i = index(plist, c) + endif + if i < 0 + " not found, nothing to do + return + endif + endif + + " Figure out the arguments for searchpairpos(). + if i % 2 == 0 + let s_flags = 'nW' + let c2 = plist[i + 1] + else + let s_flags = 'nbW' + let c2 = c + let c = plist[i - 1] + endif + if c == '[' + let c = '\[' + let c2 = '\]' + endif + + " Find the match. When it was just before the cursor move it there for a + " moment. + if before > 0 + let save_cursor = winsaveview() + call cursor(c_lnum, c_col - before) + endif + + " When not in a string or comment ignore matches inside them. + " We match "escape" for special items, such as listpEscapeSpecial. + let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' . + \ '=~? "string\\|character\\|singlequote\\|escape\\|comment"' + execute 'if' s_skip '| let s_skip = 0 | endif' + + " Limit the search to lines visible in the window. + let stoplinebottom = line('w$') + let stoplinetop = line('w0') + if i % 2 == 0 + let stopline = stoplinebottom + else + let stopline = stoplinetop + endif + + try + " Limit the search time to 300 msec to avoid a hang on very long lines. + " This fails when a timeout is not supported. + let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, 300) + catch /E118/ + " Can't use the timeout, restrict the stopline a bit more to avoid taking + " a long time on closed folds and long lines. + " The "viewable" variables give a range in which we can scroll while + " keeping the cursor at the same position. + " adjustedScrolloff accounts for very large numbers of scrolloff. + let adjustedScrolloff = min([&scrolloff, (line('w$') - line('w0')) / 2]) + let bottom_viewable = min([line('$'), c_lnum + &lines - adjustedScrolloff - 2]) + let top_viewable = max([1, c_lnum-&lines+adjustedScrolloff + 2]) + " one of these stoplines will be adjusted below, but the current values are + " minimal boundaries within the current window + if i % 2 == 0 + if has("byte_offset") && has("syntax_items") && &smc > 0 + let stopbyte = min([line2byte("$"), line2byte(".") + col(".") + &smc * 2]) + let stopline = min([bottom_viewable, byte2line(stopbyte)]) + else + let stopline = min([bottom_viewable, c_lnum + 100]) + endif + let stoplinebottom = stopline + else + if has("byte_offset") && has("syntax_items") && &smc > 0 + let stopbyte = max([1, line2byte(".") + col(".") - &smc * 2]) + let stopline = max([top_viewable, byte2line(stopbyte)]) + else + let stopline = max([top_viewable, c_lnum - 100]) + endif + let stoplinetop = stopline + endif + let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline) + endtry + + if before > 0 + call winrestview(save_cursor) + endif + + " If a match is found setup match highlighting. + if m_lnum > 0 && m_lnum >= stoplinetop && m_lnum <= stoplinebottom + exe '3match MatchParen /\(\%' . c_lnum . 'l\%' . (c_col - before) . + \ 'c\)\|\(\%' . m_lnum . 'l\%' . m_col . 'c\)/' + let w:paren_hl_on = 1 + endif +endfunction + +" Define commands that will disable and enable the plugin. +command! NoMatchParen windo 3match none | unlet! g:loaded_matchparen | + \ au! matchparen +command! DoMatchParen runtime plugin/matchparen.vim | windo doau CursorMoved + +let &cpo = s:cpo_save +unlet s:cpo_save |