230 lines
7 KiB
VimL
230 lines
7 KiB
VimL
function! s:sfile() abort
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return expand('<sfile>')
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endfunction
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let s:state_proto = {}
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function! snipmate#jumping#state() abort
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return copy(s:state_proto)
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endfunction
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function! s:listize_mirror(mirrors) abort
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return map(copy(a:mirrors), '[v:val.line, v:val.col]')
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endfunction
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" Removes snippet state info
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function! s:state_remove() dict abort
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" Remove all autocmds in group snipmate_changes in the current buffer
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unlet! b:snip_state
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silent! au! snipmate_changes * <buffer>
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endfunction
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function! s:state_find_next_stop(backwards) dict abort
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let self.stop_no += a:backwards? -1 : 1
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while !has_key(self.stops, self.stop_no)
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if self.stop_no == self.stop_count
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let self.stop_no = 0
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endif
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if self.stop_no <= 0 && a:backwards
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let self.stop_no = self.stop_count - 1
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endif
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let self.stop_no += a:backwards? -1 : 1
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endwhile
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endfunction
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" Update state information to correspond to the given tab stop
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function! s:state_set_stop(backwards) dict abort
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call self.find_next_stop(a:backwards)
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let self.cur_stop = self.stops[self.stop_no]
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let self.stop_len = (type(self.cur_stop.placeholder) == type(0))
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\ ? self.cur_stop.placeholder
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\ : len(snipMate#placeholder_str(self.stop_no, self.stops))
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let self.start_col = self.cur_stop.col
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let self.end_col = self.start_col + self.stop_len
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let self.mirrors = get(self.cur_stop, 'mirrors', [])
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let self.old_mirrors = deepcopy(self.mirrors)
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call cursor(self.cur_stop.line, self.cur_stop.col)
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let self.prev_len = col('$')
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let self.changed = 0
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let ret = self.select_word()
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if (self.stop_no == 0 || self.stop_no == self.stop_count - 1) && !a:backwards
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call self.remove()
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endif
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return ret
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endfunction
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" Jump to the next/previous tab stop
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function! s:state_jump_stop(backwards) dict abort
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" Update changes just in case
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" This seems to be only needed because insert completion does not trigger
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" the CursorMovedI event
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call self.update_changes()
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" Store placeholder/location changes
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let self.cur_stop.col = self.start_col
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if self.changed
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call self.remove_nested()
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unlet! self.cur_stop.placeholder " avoid type error for old parsing version
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let self.cur_stop.placeholder = [strpart(getline('.'),
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\ self.start_col - 1, self.end_col - self.start_col)]
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endif
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return self.set_stop(a:backwards)
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endfunction
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function! s:state_remove_nested(...) dict abort
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let id = a:0 ? a:1 : self.stop_no
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if type(self.stops[id].placeholder) == type([])
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for i in self.stops[id].placeholder
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if type(i) == type([])
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if type(i[1]) != type({})
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call self.remove_nested(i[0])
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call remove(self.stops, i[0])
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else
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call filter(self.stops[i[0]].mirrors, 'v:val isnot i[1]')
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endif
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endif
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unlet i " Avoid E706
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endfor
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endif
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endfunction
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" Select the placeholder for the current tab stop
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function! s:state_select_word() dict abort
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let len = self.stop_len
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if !len | return '' | endif
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let l = col('.') != 1 ? 'l' : ''
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if &sel == 'exclusive'
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return "\<esc>".l.'v'.len."l\<c-g>"
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endif
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return len == 1 ? "\<esc>".l.'gh' : "\<esc>".l.'v'.(len - 1)."l\<c-g>"
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endfunction
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" Update the snippet as text is typed. The self.update_mirrors() function does
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" the actual work.
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" If the cursor moves outside of a placeholder, call self.remove()
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function! s:state_update_changes() dict abort
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let change_len = col('$') - self.prev_len
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let self.changed = self.changed || change_len != 0
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let self.end_col += change_len
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let col = col('.')
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" Increase the endpoint by 1 for &sel = exclusive
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if line('.') != self.cur_stop.line || col < self.start_col
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\ || col > (self.end_col + (&sel == 'exclusive'))
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return self.remove()
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endif
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call self.update(self.cur_stop, change_len, change_len)
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if !empty(self.mirrors)
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call self.update_mirrors(change_len)
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endif
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let self.prev_len = col('$')
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endfunction
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" Actually update the mirrors for any changed text
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function! s:state_update_mirrors(change) dict abort
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let newWordLen = self.end_col - self.start_col
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let newWord = strpart(getline('.'), self.start_col - 1, newWordLen)
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let changeLen = a:change
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let curLine = line('.')
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let curCol = col('.')
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let oldStartSnip = self.start_col
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let i = 0
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for mirror in self.mirrors
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for stop in values(filter(copy(self.stops), 'v:key != 0'))
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if type(stop.placeholder) == type(0)
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if mirror.line == stop.line && mirror.col > stop.col
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\ && mirror.col < stop.col + stop.placeholder
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let stop.placeholder += changeLen
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endif
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endif
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endfor
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if has_key(mirror, 'oldSize')
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" recover the old size deduce the endline
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let oldSize = mirror.oldSize
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else
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" first time, we use the intitial size
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let oldSize = strlen(newWord)
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endif
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" Split the line into three parts: the mirror, what's before it, and
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" what's after it. Then combine them using the new mirror string.
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" Subtract one to go from column index to byte index
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let theline = getline(mirror.line)
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" part before the current mirror
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let beginline = strpart(theline, 0, mirror.col - 1)
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" current mirror transformation, and save size
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let wordMirror= substitute(newWord, get(mirror, 'pat', ''), get(mirror, 'sub', ''), get(mirror, 'flags', ''))
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let mirror.oldSize = strlen(wordMirror)
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" end of the line, use the oldSize because with the transformation,
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" the size of the mirror can be different from those of the snippet
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let endline = strpart(theline, mirror.col + oldSize -1)
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" Update other object on the line
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call self.update(mirror, changeLen, mirror.oldSize - oldSize)
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" reconstruct the line
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let update = beginline.wordMirror.endline
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call setline(mirror.line, update)
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endfor
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" Reposition the cursor in case a var updates on the same line but before
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" the current tabstop
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if oldStartSnip != self.start_col || mode() == 'i'
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call cursor(0, curCol + self.start_col - oldStartSnip)
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endif
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endfunction
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function! s:state_find_update_objects(item) dict abort
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let item = a:item
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let item.update_objects = []
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" Filter the zeroth stop because it's duplicated as the last
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for stop in values(filter(copy(self.stops), 'v:key != 0'))
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if stop.line == item.line && stop.col > item.col
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call add(item.update_objects, stop)
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endif
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for mirror in get(stop, 'mirrors', [])
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if mirror.line == item.line && mirror.col > item.col
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call add(item.update_objects, mirror)
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endif
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endfor
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endfor
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return item.update_objects
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endfunction
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function! s:state_update(item, change_len, mirror_change) dict abort
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let item = a:item
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if !exists('item.update_objects')
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let item.update_objects = self.find_update_objects(a:item)
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endif
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let to_update = item.update_objects
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for obj in to_update
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" object does not necessarly have the same decalage
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" than mirrors if mirrors use regexp
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let obj.col += a:mirror_change
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if obj is self.cur_stop
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let self.start_col += a:change_len
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let self.end_col += a:change_len
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endif
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endfor
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endfunction
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call extend(s:state_proto, snipmate#util#add_methods(s:sfile(), 'state',
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\ [ 'remove', 'set_stop', 'jump_stop', 'remove_nested',
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\ 'select_word', 'update_changes', 'update_mirrors',
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\ 'find_next_stop', 'find_update_objects', 'update' ]), 'error')
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" vim:noet:sw=4:ts=4:ft=vim
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