--- /dev/null
+" options - {
+" bufnr: bufnr('%') " required
+" type: '' " optional: defaults to visualmode(). overridden by opfunc
+" server - 'server_name' " optional
+" sync: 0 " optional, defaults to 0 (async)
+" }
+function! lsp#internal#document_range_formatting#format(options) abort
+ if has_key(a:options, 'server')
+ let l:servers = [a:options['server']]
+ else
+ let l:servers = filter(lsp#get_allowed_servers(), 'lsp#capabilities#has_document_range_formatting_provider(v:val)')
+ endif
+
+ if len(l:servers) == 0
+ let l:filetype = getbufvar(a:options['bufnr'], '&filetype')
+ call lsp#utils#error('textDocument/rangeFormatting not supported for ' . l:filetype)
+ return
+ endif
+
+ " TODO: ask user to select server for formatting if there are multiple servers
+ let l:server = l:servers[0]
+
+ redraw | echo 'Formatting Document Range ...'
+
+ call lsp#_new_command()
+
+ let [l:start_lnum, l:start_col, l:end_lnum, l:end_col] = s:get_selection_pos(get(a:options, 'type', visualmode()))
+ let l:start_char = lsp#utils#to_char('%', l:start_lnum, l:start_col)
+ let l:end_char = lsp#utils#to_char('%', l:end_lnum, l:end_col)
+
+ let l:request = {
+ \ 'method': 'textDocument/rangeFormatting',
+ \ 'params': {
+ \ 'textDocument': lsp#get_text_document_identifier(a:options['bufnr']),
+ \ 'range': {
+ \ 'start': { 'line': l:start_lnum - 1, 'character': l:start_char },
+ \ 'end': { 'line': l:end_lnum - 1, 'character': l:end_char },
+ \ },
+ \ 'options': {
+ \ 'tabSize': lsp#utils#buffer#get_indent_size(a:options['bufnr']),
+ \ 'insertSpaces': getbufvar(a:options['bufnr'], '&expandtab') ? v:true : v:false,
+ \ }
+ \ },
+ \ 'bufnr': a:options['bufnr'],
+ \ }
+
+ if get(a:options, 'sync', 0) == 1
+ try
+ let l:x = lsp#callbag#pipe(
+ \ lsp#request(l:server, l:request),
+ \ lsp#callbag#takeUntil(lsp#callbag#pipe(
+ \ lsp#stream(),
+ \ lsp#callbag#filter({x->has_key(x, 'command')}),
+ \ )),
+ \ lsp#callbag#toList(),
+ \ ).wait({ 'sleep': get(a:options, 'sleep', 1), 'timeout': get(a:options, 'timeout', g:lsp_format_sync_timeout) })
+ call s:format_next(l:x[0])
+ call s:format_complete()
+ catch
+ call s:format_error(v:exception . ' ' . v:throwpoint)
+ endtry
+ else
+ return lsp#callbag#pipe(
+ \ lsp#request(l:server, l:request),
+ \ lsp#callbag#takeUntil(lsp#callbag#pipe(
+ \ lsp#stream(),
+ \ lsp#callbag#filter({x->has_key(x, 'command')}),
+ \ )),
+ \ lsp#callbag#subscribe({
+ \ 'next':{x->s:format_next(x)},
+ \ 'error': {x->s:format_error(e)},
+ \ 'complete': {->s:format_complete()},
+ \ }),
+ \ )
+ endif
+endfunction
+
+function! s:format_next(x) abort
+ if lsp#client#is_error(a:x['response']) | return | endif
+ call lsp#utils#text_edit#apply_text_edits(a:x['request']['params']['textDocument']['uri'], a:x['response']['result'])
+endfunction
+
+function! s:format_error(e) abort
+ call lsp#log('Formatting Document Range Failed', a:e)
+ call lsp#utils#error('Formatting Document Range Failed.' . (type(a:e) == type('') ? a:e : ''))
+endfunction
+
+function! s:format_complete() abort
+ redraw | echo 'Formatting Document Range complete'
+endfunction
+
+function! s:get_selection_pos(type) abort
+ " TODO: support bufnr
+ if a:type ==? 'v'
+ let l:start_pos = getpos("'<")[1:2]
+ let l:end_pos = getpos("'>")[1:2]
+ " fix end_pos column (see :h getpos() and :h 'selection')
+ let l:end_line = getline(l:end_pos[0])
+ let l:offset = (&selection ==# 'inclusive' ? 1 : 2)
+ let l:end_pos[1] = len(l:end_line[:l:end_pos[1]-l:offset])
+ " edge case: single character selected with selection=exclusive
+ if l:start_pos[0] == l:end_pos[0] && l:start_pos[1] > l:end_pos[1]
+ let l:end_pos[1] = l:start_pos[1]
+ endif
+ elseif a:type ==? 'line'
+ let l:start_pos = [line("'["), 1]
+ let l:end_lnum = line("']")
+ let l:end_pos = [line("']"), len(getline(l:end_lnum))]
+ elseif a:type ==? 'char'
+ let l:start_pos = getpos("'[")[1:2]
+ let l:end_pos = getpos("']")[1:2]
+ else
+ let l:start_pos = [0, 0]
+ let l:end_pos = [0, 0]
+ endif
+
+ return l:start_pos + l:end_pos
+endfunction
+
+function! lsp#internal#document_range_formatting#opfunc(type) abort
+ call lsp#internal#document_range_formatting#format({
+ \ 'type': a:type,
+ \ 'bufnr': bufnr('%'),
+ \ })
+endfunction