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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 08:50:31 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 08:50:31 +0000
commitaed8ce9da277f5ecffe968b324f242c41c3b752a (patch)
treed2e538394cb7a8a7c42a4aac6ccf1a8e3256999b /runtime/plugin/matchparen.vim
parentInitial commit. (diff)
downloadvim-aed8ce9da277f5ecffe968b324f242c41c3b752a.tar.xz
vim-aed8ce9da277f5ecffe968b324f242c41c3b752a.zip
Adding upstream version 2:9.0.1378.upstream/2%9.0.1378upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'runtime/plugin/matchparen.vim')
-rw-r--r--runtime/plugin/matchparen.vim225
1 files changed, 225 insertions, 0 deletions
diff --git a/runtime/plugin/matchparen.vim b/runtime/plugin/matchparen.vim
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+" Vim plugin for showing matching parens
+" Maintainer: Bram Moolenaar <Bram@vim.org>
+" Last Change: 2022 Dec 01
+
+" Exit quickly when:
+" - this plugin was already loaded (or disabled)
+" - when 'compatible' is set
+if exists("g:loaded_matchparen") || &cp
+ finish
+endif
+let g:loaded_matchparen = 1
+
+if !exists("g:matchparen_timeout")
+ let g:matchparen_timeout = 300
+endif
+if !exists("g:matchparen_insert_timeout")
+ let g:matchparen_insert_timeout = 60
+endif
+
+augroup matchparen
+ " Replace all matchparen autocommands
+ autocmd! CursorMoved,CursorMovedI,WinEnter,BufWinEnter,WinScrolled * call s:Highlight_Matching_Pair()
+ autocmd! WinLeave,BufLeave * call s:Remove_Matches()
+ if exists('##TextChanged')
+ autocmd! TextChanged,TextChangedI * call s:Highlight_Matching_Pair()
+ endif
+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.
+func s:Highlight_Matching_Pair()
+ " Remove any previous match.
+ call s:Remove_Matches()
+
+ " 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 text = getline(c_lnum)
+ let matches = matchlist(text, '\(.\)\=\%'.c_col.'c\(.\=\)')
+ if empty(matches)
+ let [c_before, c] = ['', '']
+ else
+ let [c_before, c] = matches[1:2]
+ endif
+ 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 = strlen(c_before)
+ let c = c_before
+ 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 has_getcurpos = exists("*getcurpos")
+ if has_getcurpos
+ " getcurpos() is more efficient but doesn't exist before 7.4.313.
+ let save_cursor = getcurpos()
+ else
+ let save_cursor = winsaveview()
+ endif
+ call cursor(c_lnum, c_col - before)
+ endif
+
+ if !has("syntax") || !exists("g:syntax_on")
+ let s_skip = "0"
+ else
+ " Build an expression that detects whether the current cursor position is
+ " in certain syntax types (string, comment, etc.), for use as
+ " searchpairpos()'s skip argument.
+ " We match "escape" for special items, such as lispEscapeSpecial, and
+ " match "symbol" for lispBarSymbol.
+ let s_skip = 'synstack(".", col("."))'
+ \ . '->indexof({_, id -> synIDattr(id, "name") =~? '
+ \ . '"string\\|character\\|singlequote\\|escape\\|symbol\\|comment"}) >= 0'
+ " If executing the expression determines that the cursor is currently in
+ " one of the syntax types, then we want searchpairpos() to find the pair
+ " within those syntax types (i.e., not skip). Otherwise, the cursor is
+ " outside of the syntax types and s_skip should keep its value so we skip
+ " any matching pair inside the syntax types.
+ " Catch if this throws E363: pattern uses more memory than 'maxmempattern'.
+ try
+ execute 'if ' . s_skip . ' | let s_skip = "0" | endif'
+ catch /^Vim\%((\a\+)\)\=:E363/
+ " We won't find anything, so skip searching, should keep Vim responsive.
+ return
+ endtry
+ endif
+
+ " Limit the search to lines visible in the window.
+ let stoplinebottom = line('w$')
+ let stoplinetop = line('w0')
+ if i % 2 == 0
+ let stopline = stoplinebottom
+ else
+ let stopline = stoplinetop
+ endif
+
+ " Limit the search time to 300 msec to avoid a hang on very long lines.
+ " This fails when a timeout is not supported.
+ if mode() == 'i' || mode() == 'R'
+ let timeout = exists("b:matchparen_insert_timeout") ? b:matchparen_insert_timeout : g:matchparen_insert_timeout
+ else
+ let timeout = exists("b:matchparen_timeout") ? b:matchparen_timeout : g:matchparen_timeout
+ endif
+ try
+ let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, timeout)
+ catch /E118/
+ " Can't use the timeout, restrict the stopline a bit more to avoid taking
+ " a long time on closed folds and long lines.
+ " The "viewable" variables give a range in which we can scroll while
+ " keeping the cursor at the same position.
+ " adjustedScrolloff accounts for very large numbers of scrolloff.
+ let adjustedScrolloff = min([&scrolloff, (line('w$') - 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
+ if has_getcurpos
+ call setpos('.', save_cursor)
+ else
+ call winrestview(save_cursor)
+ endif
+ endif
+
+ " If a match is found setup match highlighting.
+ if m_lnum > 0 && m_lnum >= stoplinetop && m_lnum <= stoplinebottom
+ if exists('*matchaddpos')
+ call matchaddpos('MatchParen', [[c_lnum, c_col - before], [m_lnum, m_col]], 10, 3)
+ else
+ exe '3match MatchParen /\(\%' . c_lnum . 'l\%' . (c_col - before) .
+ \ 'c\)\|\(\%' . m_lnum . 'l\%' . m_col . 'c\)/'
+ endif
+ let w:paren_hl_on = 1
+ endif
+endfunction
+
+func s:Remove_Matches()
+ if exists('w:paren_hl_on') && w:paren_hl_on
+ silent! call matchdelete(3)
+ let w:paren_hl_on = 0
+ endif
+endfunc
+
+
+" Define commands that will disable and enable the plugin.
+command DoMatchParen call s:DoMatchParen()
+command NoMatchParen call s:NoMatchParen()
+
+func s:NoMatchParen()
+ let w = winnr()
+ noau windo silent! call matchdelete(3)
+ unlet! g:loaded_matchparen
+ exe "noau ". w . "wincmd w"
+ au! matchparen
+endfunc
+
+func s:DoMatchParen()
+ runtime plugin/matchparen.vim
+ let w = winnr()
+ silent windo doau CursorMoved
+ exe "noau ". w . "wincmd w"
+endfunc
+
+let &cpo = s:cpo_save
+unlet s:cpo_save