234 lines
7.6 KiB
VimL
234 lines
7.6 KiB
VimL
"--------------------------------------------------------------------------------
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"
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" Copyright (c) 2010 Michael Smith <msmith@msmith.id.au>
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"
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" http://github.com/michaeljsmith/vim-indent-object
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"
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" Permission is hereby granted, free of charge, to any person obtaining a copy
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" of this software and associated documentation files (the "Software"), to
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" deal in the Software without restriction, including without limitation the
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" rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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" sell copies of the Software, and to permit persons to whom the Software is
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" furnished to do so, subject to the following conditions:
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"
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" The above copyright notice and this permission notice shall be included in
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" all copies or substantial portions of the Software.
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"
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" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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" AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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" IN THE SOFTWARE.
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"
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"--------------------------------------------------------------------------------
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" Mappings excluding line below.
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onoremap <silent>ai :<C-u>cal <Sid>HandleTextObjectMapping(0, 0, 0, [line("."), line("."), col("."), col(".")])<CR>
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onoremap <silent>ii :<C-u>cal <Sid>HandleTextObjectMapping(1, 0, 0, [line("."), line("."), col("."), col(".")])<CR>
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vnoremap <silent>ai :<C-u>cal <Sid>HandleTextObjectMapping(0, 0, 1, [line("'<"), line("'>"), col("'<"), col("'>")])<CR><Esc>gv
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vnoremap <silent>ii :<C-u>cal <Sid>HandleTextObjectMapping(1, 0, 1, [line("'<"), line("'>"), col("'<"), col("'>")])<CR><Esc>gv
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" Mappings including line below.
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onoremap <silent>aI :<C-u>cal <Sid>HandleTextObjectMapping(0, 1, 0, [line("."), line("."), col("."), col(".")])<CR>
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onoremap <silent>iI :<C-u>cal <Sid>HandleTextObjectMapping(1, 1, 0, [line("."), line("."), col("."), col(".")])<CR>
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vnoremap <silent>aI :<C-u>cal <Sid>HandleTextObjectMapping(0, 1, 1, [line("'<"), line("'>"), col("'<"), col("'>")])<CR><Esc>gv
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vnoremap <silent>iI :<C-u>cal <Sid>HandleTextObjectMapping(1, 1, 1, [line("'<"), line("'>"), col("'<"), col("'>")])<CR><Esc>gv
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let s:l0 = -1
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let s:l1 = -1
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let s:c0 = -1
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let s:c1 = -1
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if !exists("g:indent_object_except_first_level")
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let g:indent_object_except_first_level = 1
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endif
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function! <Sid>TextObject(inner, incbelow, vis, range, count)
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" Record the current state of the visual region.
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let vismode = "V"
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" Detect if this is a completely new visual selction session.
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let new_vis = 0
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let new_vis = new_vis || s:l0 != a:range[0]
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let new_vis = new_vis || s:l1 != a:range[1]
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let new_vis = new_vis || s:c0 != a:range[2]
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let new_vis = new_vis || s:c1 != a:range[3]
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let s:l0 = a:range[0]
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let s:l1 = a:range[1]
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let s:c0 = a:range[2]
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let s:c1 = a:range[3]
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" Repeatedly increase the scope of the selection.
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let itr_cnt = 0
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let cnt = a:count
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while cnt > 0
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" Look for the minimum indentation in the current visual region.
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let l = s:l0
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let idnt_invalid = 1000
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let idnt = idnt_invalid
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while l <= s:l1
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if !(getline(l) =~ "^\\s*$")
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let idnt = min([idnt, indent(l)])
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endif
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let l += 1
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endwhile
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" Keep track of where the range should be expanded to.
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let l_1 = s:l0
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let l_1o = l_1
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let l2 = s:l1
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let l2o = l2
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" If we are highlighting only blank lines, we may not have found a
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" valid indent. In this case we need to look for the next and previous
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" non blank lines and check which of those has the largest indent.
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if idnt == idnt_invalid
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let idnt = 0
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let pnb = prevnonblank(s:l0)
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if pnb
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let idnt = max([idnt, indent(pnb)])
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let l_1 = pnb
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endif
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let nnb = nextnonblank(s:l0)
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if nnb
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let idnt = max([idnt, indent(nnb)])
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endif
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" If we are in whitespace at the beginning of a block, skip over
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" it when we are selecting the range. Similarly, if we are in
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" whitespace at the end, ignore it.
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if idnt > indent(pnb)
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let l_1 = nnb
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endif
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if idnt > indent(nnb)
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let l2 = pnb
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endif
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endif
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" Search backward for the first line with less indent than the target
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" indent (skipping blank lines).
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let blnk = getline(l_1) =~ "^\\s*$"
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while l_1 > 0 && (blnk || indent(l_1) >= idnt)
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if g:indent_object_except_first_level && idnt == 0 && blnk
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break
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endif
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if !blnk || !a:inner
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let l_1o = l_1
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endif
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let l_1 -= 1
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let blnk = getline(l_1) =~ "^\\s*$"
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endwhile
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" Search forward for the first line with more indent than the target
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" indent (skipping blank lines).
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let line_cnt = line("$")
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let blnk = getline(l2) =~ "^\\s*$"
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while l2 <= line_cnt && (blnk || indent(l2) >= idnt)
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if g:indent_object_except_first_level && idnt == 0 && blnk
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break
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endif
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if !blnk || !a:inner
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let l2o = l2
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endif
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let l2 += 1
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let blnk = getline(l2) =~ "^\\s*$"
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endwhile
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" Determine which of these extensions to include. Include neither if
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" we are selecting an 'inner' object. Exclude the bottom unless are
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" told to include it.
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let idnt2 = max([indent(l_1), indent(l2)])
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if indent(l_1) < idnt2 || a:inner
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let l_1 = l_1o
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endif
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if indent(l2) < idnt2 || a:inner || !a:incbelow
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let l2 = l2o
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endif
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let l_1 = max([l_1, 1])
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let l2 = min([l2, line("$")])
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" Extend the columns to the start and end.
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" If inner is selected, set the final cursor pos to the start
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" of the text in the line.
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let c_1 = 1
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if a:inner
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let c_1 = match(getline(l_1), "\\c\\S") + 1
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endif
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let c2 = len(getline(l2))
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if !a:inner
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let c2 += 1
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endif
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" Make sure there's no change if we haven't really made a
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" significant change in linewise mode - this makes sure that
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" we can iteratively increase selection in linewise mode.
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if itr_cnt == 0 && vismode ==# 'V' && s:l0 == l_1 && s:l1 == l2
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let c_1 = s:c0
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let c2 = s:c1
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endif
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" Check whether the visual region has changed.
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let chg = 0
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let chg = chg || s:l0 != l_1
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let chg = chg || s:l1 != l2
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let chg = chg || s:c0 != c_1
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let chg = chg || s:c1 != c2
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if vismode ==# 'V' && new_vis
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let chg = 1
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endif
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" Update the vars.
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let s:l0 = l_1
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let s:l1 = l2
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let s:c0 = c_1
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let s:c1 = c2
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" If there was no change, then don't decrement the count (it didn't
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" count because it didn't do anything).
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if chg
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let cnt = cnt - 1
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else
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" Since this didn't work, push the selection back one char. This
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" will have the effect of getting the enclosing block. Do it at
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" the beginning rather than the end - the beginning is very likely
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" to be only one indentation level different.
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if s:l0 == 0
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return
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endif
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let s:l0 -= 1
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let s:c0 = len(getline(s:l0))
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endif
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let itr_cnt += 1
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endwhile
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" Apply the range we have found. Make sure to use the current visual mode.
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call cursor(s:l0, s:c0)
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exe "normal! " . vismode
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call cursor(s:l1, s:c1)
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normal! o
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" Update these static variables - we need to keep these up-to-date between
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" invocations because it's the only way we can detect whether it's a new
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" visual mode. We need to know if it's a new visual mode because otherwise
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" if there's a single line block in visual line mode and we select it with
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" "V", we can't tell whether it's already been selected using Vii.
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exe "normal! \<Esc>"
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let s:l0 = line("'<")
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let s:l1 = line("'>")
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let s:c0 = col("'<")
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let s:c1 = col("'>")
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normal gv0o0
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endfunction
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function! <Sid>HandleTextObjectMapping(inner, incbelow, vis, range)
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call <Sid>TextObject(a:inner, a:incbelow, a:vis, a:range, v:count1)
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endfunction
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