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" Text object creation {{{
" XXX: use virtualedit here, it should greatly simplify things
let s:text_object_number = 0
function Textobj(char, callback, ...)
let s:text_object_number += 1
function s:textobj_{s:text_object_number}(inner, operator, count, callback, ...)
try
let pos = getpos('.')
sandbox let [startline, startcol, endline, endcol] = call(a:callback, [a:inner, a:count] + a:000)
catch /no-match/
return
finally
call setpos('.', pos)
endtry
if startline == endline
let objlength = endcol - startcol + 1
else
let objlength = 0
if endline - startline > 1
exe 'let objlength += '.join(map(getline(startline + 1, endline - 1), 'strlen(v:val) + 1'), '+')
endif
let objlength += endcol + strlen(getline(startline)) - startcol + 2
endif
let whichwrap = &whichwrap
set whichwrap+=s
let virtualedit = &virtualedit
if startcol > strlen(getline(startline))
let startcol = 1
let startline += 1
let objlength -= 1
endif
if endcol == 0
set virtualedit=onemore
endif
if a:operator == 'v'
let objlength -= 1
endif
call cursor(startline, startcol)
if a:operator == 'c'
let operator = 'd'
else
let operator = a:operator
end
exe 'normal! '.operator.objlength.' '
if a:operator == 'c'
startinsert
endif
let &whichwrap = whichwrap
let &virtualedit = virtualedit
endfunction
exe 'onoremap <silent>a'.a:char.' <Esc>:call call("<SID>textobj_'.s:text_object_number.'", [0, v:operator, v:prevcount, "'.a:callback.'"] + '.string(a:000).')<CR>'
exe 'onoremap <silent>i'.a:char.' <Esc>:call call("<SID>textobj_'.s:text_object_number.'", [1, v:operator, v:prevcount, "'.a:callback.'"] + '.string(a:000).')<CR>'
exe 'xnoremap <silent>a'.a:char.' <Esc>:call call("<SID>textobj_'.s:text_object_number.'", [0, "v", v:prevcount, "'.a:callback.'"] + '.string(a:000).')<CR>'
exe 'xnoremap <silent>i'.a:char.' <Esc>:call call("<SID>textobj_'.s:text_object_number.'", [1, "v", v:prevcount, "'.a:callback.'"] + '.string(a:000).')<CR>'
endfunction
" }}}
" Text object definitions {{{
" arbitrary paired symbols (/ for regex, etc) {{{
function Textobj_paired(inner, count, char)
let pos = getpos('.')
let line = strpart(getline(pos[1]), 0, pos[2])
let lines = getline(1, pos[1] - 1) + [line]
let linenum = pos[1]
for line in reverse(lines)
let objstart = match(line, '.*\zs\\\@<!'.a:char) + 1
if objstart != 0
break
endif
let linenum -= 1
endfor
if objstart == 0
throw 'no-match'
endif
let objstart += a:inner
let objstartline = linenum
let line = strpart(getline(pos[1]), pos[2] - 1)
let lines = [line] + getline(pos[1] + 1, line('$'))
let linenum = pos[1]
for line in lines
let objend = match(line, '\\\@<!'.a:char) + 1
if objend != 0
if linenum == pos[1]
" have to account for the possibility of a split escape
" sequence
if objend == 1
if getline(pos[1])[pos[2] - 2] == '\'
let objend = match(line, '\\\@<!'.a:char, 1) + 1
if objend == 0
let linenum += 1
continue
endif
else
" if we're sitting on a char, don't do anything, since
" it's impossible to know which direction to look
throw 'no-match'
endif
endif
let objend += pos[2] - 1
endif
break
endif
let linenum += 1
endfor
if objend == 0
throw 'no-match'
endif
let objend -= a:inner
let objendline = linenum
return [objstartline, objstart, objendline, objend]
endfunction
" }}}
" f for folds {{{
function Textobj_fold(inner, count)
if foldlevel(line('.')) == 0
throw 'no-match'
endif
exe 'normal! '.a:count.'[z'
let startline = line('.') + a:inner
normal! ]z
let endline = line('.') - a:inner
return [startline, 1, endline, strlen(getline(endline))]
endfunction
" }}}
" , for function arguments {{{
function Textobj_arg(inner, count)
let pos = getpos('.')
let curchar = getline(pos[1])[pos[2] - 1]
if curchar == ','
if getline(pos[1])[pos[2] - 2] =~ '\s'
normal! gE
else
exe "normal! \<BS>"
endif
return s:textobj_arg(a:inner, a:count)
elseif curchar =~ '\s'
normal! W
return s:textobj_arg(a:inner, a:count)
endif
let line = strpart(getline(pos[1]), 0, pos[2])
let lines = getline(1, pos[1] - 1) + [line]
let linenum = pos[1]
for line in reverse(lines)
let argbegin = matchend(line, '.*\%(,\s*\|(\)') + 1
if argbegin != 0
while argbegin > strlen(line)
let linenum += 1
let line = getline(linenum)
let argbegin = matchend(line, '^\s*') + 1
endwhile
break
endif
let linenum -= 1
endfor
if argbegin == 0
throw 'no-match'
endif
let argstartline = linenum
let line = strpart(getline(pos[1]), pos[2] - 1)
let lines = [line] + getline(pos[1] + 1, line('$'))
let linenum = pos[1]
for line in lines
let argend = match(line, '\zs.\?\%(,\|)\)') + 1
if argend != 0
if linenum == pos[1]
let argend += pos[2] - 1
endif
if argend == 1 && getline(linenum)[argend - 1] == ')'
let linenum -= 1
let argend = strlen(getline(linenum))
endif
break
endif
let linenum += 1
endfor
if argend == 0
throw 'no-match'
endif
let argendline = linenum
if a:inner == 0
let endline = getline(argendline)
let startline = getline(argstartline)
if argend >= strlen(endline)
let argend = 0
let argendline += 1
let endline = getline(argendline)
endif
if endline[argend] == ')' && startline[argbegin - 2] != '('
let argbegin = match(strpart(startline, 0, argbegin - 1), '\s*$')
while argbegin == 0
let argstartline -= 1
let startline = getline(argstartline)
let argbegin = strlen(startline)
endwhile
elseif endline[argend] != ')'
let argend += matchend(strpart(endline, argend + 1), '^\s*') + 1
if startline[argbegin - 2] == '('
for line in [strpart(endline, argend)] +
\ getline(argendline + 1, line('$'))
let argincr = matchend(line, '\s*\ze\S')
if argincr != -1
let argend += argincr
break
endif
let argendline += 1
let argend = 0
endfor
endif
endif
if argend >= strlen(endline)
if argendline == argstartline
let newbegin = matchend(strpart(endline, 0, argbegin), '.*,')
if newbegin != -1
let argbegin = newbegin + 1
endif
endif
let argend = 0
let argendline += 1
endif
endif
return [argstartline, argbegin, argendline, argend]
endfunction
" }}}
" }}}
" Text object loading {{{
for object in g:Textobj_defs
call call('Textobj', object)
endfor
unlet object
" }}}
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