--- /dev/null
+" https://github.com/prabirshrestha/async.vim#2082d13bb195f3203d41a308b89417426a7deca1 (dirty)
+" :AsyncEmbed path=./autoload/lsp/utils/job.vim namespace=lsp#utils#job
+
+" Author: Prabir Shrestha <mail at prabir dot me>
+" Website: https://github.com/prabirshrestha/async.vim
+" License: The MIT License {{{
+" The MIT License (MIT)
+"
+" Copyright (c) 2016 Prabir Shrestha
+"
+" Permission is hereby granted, free of charge, to any person obtaining a copy
+" of this software and associated documentation files (the "Software"), to deal
+" in the Software without restriction, including without limitation the rights
+" to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+" copies of the Software, and to permit persons to whom the Software is
+" furnished to do so, subject to the following conditions:
+"
+" The above copyright notice and this permission notice shall be included in all
+" copies or substantial portions of the Software.
+"
+" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+" AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+" OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+" SOFTWARE.
+" }}}
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+let s:jobidseq = 0
+let s:jobs = {} " { job, opts, type: 'vimjob|nvimjob'}
+let s:job_type_nvimjob = 'nvimjob'
+let s:job_type_vimjob = 'vimjob'
+let s:job_error_unsupported_job_type = -2 " unsupported job type
+
+function! s:noop(...) abort
+endfunction
+
+function! s:job_supported_types() abort
+ let l:supported_types = []
+ if has('nvim')
+ let l:supported_types += [s:job_type_nvimjob]
+ endif
+ if !has('nvim') && has('job') && has('channel') && has('lambda')
+ let l:supported_types += [s:job_type_vimjob]
+ endif
+ return l:supported_types
+endfunction
+
+function! s:job_supports_type(type) abort
+ return index(s:job_supported_types(), a:type) >= 0
+endfunction
+
+function! s:out_cb(jobid, opts, job, data) abort
+ call a:opts.on_stdout(a:jobid, a:data, 'stdout')
+endfunction
+
+function! s:out_cb_array(jobid, opts, job, data) abort
+ call a:opts.on_stdout(a:jobid, split(a:data, "\n", 1), 'stdout')
+endfunction
+
+function! s:err_cb(jobid, opts, job, data) abort
+ call a:opts.on_stderr(a:jobid, a:data, 'stderr')
+endfunction
+
+function! s:err_cb_array(jobid, opts, job, data) abort
+ call a:opts.on_stderr(a:jobid, split(a:data, "\n", 1), 'stderr')
+endfunction
+
+function! s:exit_cb(jobid, opts, job, status) abort
+ if has_key(a:opts, 'on_exit')
+ call a:opts.on_exit(a:jobid, a:status, 'exit')
+ endif
+ if has_key(s:jobs, a:jobid)
+ call remove(s:jobs, a:jobid)
+ endif
+endfunction
+
+function! s:on_stdout(jobid, data, event) abort
+ let l:jobinfo = s:jobs[a:jobid]
+ call l:jobinfo.opts.on_stdout(a:jobid, a:data, a:event)
+endfunction
+
+function! s:on_stdout_string(jobid, data, event) abort
+ let l:jobinfo = s:jobs[a:jobid]
+ call l:jobinfo.opts.on_stdout(a:jobid, join(a:data, "\n"), a:event)
+endfunction
+
+function! s:on_stderr(jobid, data, event) abort
+ let l:jobinfo = s:jobs[a:jobid]
+ call l:jobinfo.opts.on_stderr(a:jobid, a:data, a:event)
+endfunction
+
+function! s:on_stderr_string(jobid, data, event) abort
+ let l:jobinfo = s:jobs[a:jobid]
+ call l:jobinfo.opts.on_stderr(a:jobid, join(a:data, "\n"), a:event)
+endfunction
+
+function! s:on_exit(jobid, status, event) abort
+ if has_key(s:jobs, a:jobid)
+ let l:jobinfo = s:jobs[a:jobid]
+ if has_key(l:jobinfo.opts, 'on_exit')
+ call l:jobinfo.opts.on_exit(a:jobid, a:status, a:event)
+ endif
+ if has_key(s:jobs, a:jobid)
+ call remove(s:jobs, a:jobid)
+ endif
+ endif
+endfunction
+
+function! s:job_start(cmd, opts) abort
+ let l:jobtypes = s:job_supported_types()
+ let l:jobtype = ''
+
+ if has_key(a:opts, 'type')
+ if type(a:opts.type) == type('')
+ if !s:job_supports_type(a:opts.type)
+ return s:job_error_unsupported_job_type
+ endif
+ let l:jobtype = a:opts.type
+ else
+ let l:jobtypes = a:opts.type
+ endif
+ endif
+
+ if empty(l:jobtype)
+ " find the best jobtype
+ for l:jobtype2 in l:jobtypes
+ if s:job_supports_type(l:jobtype2)
+ let l:jobtype = l:jobtype2
+ endif
+ endfor
+ endif
+
+ if l:jobtype ==? ''
+ return s:job_error_unsupported_job_type
+ endif
+
+ " options shared by both vim and neovim
+ let l:jobopt = {}
+ if has_key(a:opts, 'cwd')
+ let l:jobopt.cwd = a:opts.cwd
+ endif
+ if has_key(a:opts, 'env')
+ let l:jobopt.env = a:opts.env
+ endif
+
+ let l:normalize = get(a:opts, 'normalize', 'array') " array/string/raw
+
+ if l:jobtype == s:job_type_nvimjob
+ if l:normalize ==# 'string'
+ let l:jobopt['on_stdout'] = has_key(a:opts, 'on_stdout') ? function('s:on_stdout_string') : function('s:noop')
+ let l:jobopt['on_stderr'] = has_key(a:opts, 'on_stderr') ? function('s:on_stderr_string') : function('s:noop')
+ else " array or raw
+ let l:jobopt['on_stdout'] = has_key(a:opts, 'on_stdout') ? function('s:on_stdout') : function('s:noop')
+ let l:jobopt['on_stderr'] = has_key(a:opts, 'on_stderr') ? function('s:on_stderr') : function('s:noop')
+ endif
+ call extend(l:jobopt, { 'on_exit': function('s:on_exit') })
+ let l:job = jobstart(a:cmd, l:jobopt)
+ if l:job <= 0
+ return l:job
+ endif
+ let l:jobid = l:job " nvimjobid and internal jobid is same
+ let s:jobs[l:jobid] = {
+ \ 'type': s:job_type_nvimjob,
+ \ 'opts': a:opts,
+ \ }
+ let s:jobs[l:jobid].job = l:job
+ elseif l:jobtype == s:job_type_vimjob
+ let s:jobidseq = s:jobidseq + 1
+ let l:jobid = s:jobidseq
+ if l:normalize ==# 'array'
+ let l:jobopt['out_cb'] = has_key(a:opts, 'on_stdout') ? function('s:out_cb_array', [l:jobid, a:opts]) : function('s:noop')
+ let l:jobopt['err_cb'] = has_key(a:opts, 'on_stderr') ? function('s:err_cb_array', [l:jobid, a:opts]) : function('s:noop')
+ else " raw or string
+ let l:jobopt['out_cb'] = has_key(a:opts, 'on_stdout') ? function('s:out_cb', [l:jobid, a:opts]) : function('s:noop')
+ let l:jobopt['err_cb'] = has_key(a:opts, 'on_stderr') ? function('s:err_cb', [l:jobid, a:opts]) : function('s:noop')
+ endif
+ call extend(l:jobopt, {
+ \ 'exit_cb': function('s:exit_cb', [l:jobid, a:opts]),
+ \ 'mode': 'raw',
+ \ })
+ if has('patch-8.1.889')
+ let l:jobopt['noblock'] = 1
+ endif
+ let l:job = job_start(a:cmd, l:jobopt)
+ if job_status(l:job) !=? 'run'
+ return -1
+ endif
+ let s:jobs[l:jobid] = {
+ \ 'type': s:job_type_vimjob,
+ \ 'opts': a:opts,
+ \ 'job': l:job,
+ \ 'channel': job_getchannel(l:job),
+ \ 'buffer': ''
+ \ }
+ else
+ return s:job_error_unsupported_job_type
+ endif
+
+ return l:jobid
+endfunction
+
+function! s:job_stop(jobid) abort
+ if has_key(s:jobs, a:jobid)
+ let l:jobinfo = s:jobs[a:jobid]
+ if l:jobinfo.type == s:job_type_nvimjob
+ " See: vital-Whisky/System.Job
+ try
+ call jobstop(a:jobid)
+ catch /^Vim\%((\a\+)\)\=:E900/
+ " NOTE:
+ " Vim does not raise exception even the job has already closed so fail
+ " silently for 'E900: Invalid job id' exception
+ endtry
+ elseif l:jobinfo.type == s:job_type_vimjob
+ if type(s:jobs[a:jobid].job) == v:t_job
+ call job_stop(s:jobs[a:jobid].job)
+ elseif type(s:jobs[a:jobid].job) == v:t_channel
+ call ch_close(s:jobs[a:jobid].job)
+ endif
+ endif
+ endif
+endfunction
+
+function! s:job_send(jobid, data, opts) abort
+ let l:jobinfo = s:jobs[a:jobid]
+ let l:close_stdin = get(a:opts, 'close_stdin', 0)
+ if l:jobinfo.type == s:job_type_nvimjob
+ call jobsend(a:jobid, a:data)
+ if l:close_stdin
+ call chanclose(a:jobid, 'stdin')
+ endif
+ elseif l:jobinfo.type == s:job_type_vimjob
+ " There is no easy way to know when ch_sendraw() finishes writing data
+ " on a non-blocking channels -- has('patch-8.1.889') -- and because of
+ " this, we cannot safely call ch_close_in(). So when we find ourselves
+ " in this situation (i.e. noblock=1 and close stdin after send) we fall
+ " back to using s:flush_vim_sendraw() and wait for transmit buffer to be
+ " empty
+ "
+ " Ref: https://groups.google.com/d/topic/vim_dev/UNNulkqb60k/discussion
+ if has('patch-8.1.818') && (!has('patch-8.1.889') || !l:close_stdin)
+ call ch_sendraw(l:jobinfo.channel, a:data)
+ else
+ let l:jobinfo.buffer .= a:data
+ call s:flush_vim_sendraw(a:jobid, v:null)
+ endif
+ if l:close_stdin
+ while len(l:jobinfo.buffer) != 0
+ sleep 1m
+ endwhile
+ call ch_close_in(l:jobinfo.channel)
+ endif
+ endif
+endfunction
+
+function! s:flush_vim_sendraw(jobid, timer) abort
+ " https://github.com/vim/vim/issues/2548
+ " https://github.com/natebosch/vim-lsc/issues/67#issuecomment-357469091
+ let l:jobinfo = s:jobs[a:jobid]
+ sleep 1m
+ if len(l:jobinfo.buffer) <= 4096
+ call ch_sendraw(l:jobinfo.channel, l:jobinfo.buffer)
+ let l:jobinfo.buffer = ''
+ else
+ let l:to_send = l:jobinfo.buffer[:4095]
+ let l:jobinfo.buffer = l:jobinfo.buffer[4096:]
+ call ch_sendraw(l:jobinfo.channel, l:to_send)
+ call timer_start(1, function('s:flush_vim_sendraw', [a:jobid]))
+ endif
+endfunction
+
+function! s:job_wait_single(jobid, timeout, start) abort
+ if !has_key(s:jobs, a:jobid)
+ return -3
+ endif
+
+ let l:jobinfo = s:jobs[a:jobid]
+ if l:jobinfo.type == s:job_type_nvimjob
+ let l:timeout = a:timeout - reltimefloat(reltime(a:start)) * 1000
+ return jobwait([a:jobid], float2nr(l:timeout))[0]
+ elseif l:jobinfo.type == s:job_type_vimjob
+ let l:timeout = a:timeout / 1000.0
+ try
+ while l:timeout < 0 || reltimefloat(reltime(a:start)) < l:timeout
+ let l:info = job_info(l:jobinfo.job)
+ if l:info.status ==# 'dead'
+ return l:info.exitval
+ elseif l:info.status ==# 'fail'
+ return -3
+ endif
+ sleep 1m
+ endwhile
+ catch /^Vim:Interrupt$/
+ return -2
+ endtry
+ endif
+ return -1
+endfunction
+
+function! s:job_wait(jobids, timeout) abort
+ let l:start = reltime()
+ let l:exitcode = 0
+ let l:ret = []
+ for l:jobid in a:jobids
+ if l:exitcode != -2 " Not interrupted.
+ let l:exitcode = s:job_wait_single(l:jobid, a:timeout, l:start)
+ endif
+ let l:ret += [l:exitcode]
+ endfor
+ return l:ret
+endfunction
+
+function! s:job_pid(jobid) abort
+ if !has_key(s:jobs, a:jobid)
+ return 0
+ endif
+
+ let l:jobinfo = s:jobs[a:jobid]
+ if l:jobinfo.type == s:job_type_nvimjob
+ return jobpid(a:jobid)
+ elseif l:jobinfo.type == s:job_type_vimjob
+ let l:vimjobinfo = job_info(a:jobid)
+ if type(l:vimjobinfo) == type({}) && has_key(l:vimjobinfo, 'process')
+ return l:vimjobinfo['process']
+ endif
+ endif
+ return 0
+endfunction
+
+function! s:callback_cb(jobid, opts, ch, data) abort
+ if has_key(a:opts, 'on_stdout')
+ call a:opts.on_stdout(a:jobid, a:data, 'stdout')
+ endif
+endfunction
+
+function! s:callback_cb_array(jobid, opts, ch, data) abort
+ if has_key(a:opts, 'on_stdout')
+ call a:opts.on_stdout(a:jobid, split(a:data, "\n", 1), 'stdout')
+ endif
+endfunction
+
+function! s:close_cb(jobid, opts, ch) abort
+ if has_key(a:opts, 'on_exit')
+ call a:opts.on_exit(a:jobid, 'closed', 'exit')
+ endif
+ if has_key(s:jobs, a:jobid)
+ call remove(s:jobs, a:jobid)
+ endif
+endfunction
+
+" public apis {{{
+function! lsp#utils#job#start(cmd, opts) abort
+ return s:job_start(a:cmd, a:opts)
+endfunction
+
+function! lsp#utils#job#stop(jobid) abort
+ call s:job_stop(a:jobid)
+endfunction
+
+function! lsp#utils#job#send(jobid, data, ...) abort
+ let l:opts = get(a:000, 0, {})
+ call s:job_send(a:jobid, a:data, l:opts)
+endfunction
+
+function! lsp#utils#job#wait(jobids, ...) abort
+ let l:timeout = get(a:000, 0, -1)
+ return s:job_wait(a:jobids, l:timeout)
+endfunction
+
+function! lsp#utils#job#pid(jobid) abort
+ return s:job_pid(a:jobid)
+endfunction
+
+function! lsp#utils#job#connect(addr, opts) abort
+ let s:jobidseq = s:jobidseq + 1
+ let l:jobid = s:jobidseq
+ let l:retry = 0
+ let l:normalize = get(a:opts, 'normalize', 'array') " array/string/raw
+ while l:retry < 5
+ let l:ch = ch_open(a:addr, {'waittime': 1000})
+ call ch_setoptions(l:ch, {
+ \ 'callback': function(l:normalize ==# 'array' ? 's:callback_cb_array' : 's:callback_cb', [l:jobid, a:opts]),
+ \ 'close_cb': function('s:close_cb', [l:jobid, a:opts]),
+ \ 'mode': 'raw',
+ \})
+ if ch_status(l:ch) ==# 'open'
+ break
+ endif
+ sleep 100m
+ let l:retry += 1
+ endwhile
+ let s:jobs[l:jobid] = {
+ \ 'type': s:job_type_vimjob,
+ \ 'opts': a:opts,
+ \ 'job': l:ch,
+ \ 'channel': l:ch,
+ \ 'buffer': ''
+ \}
+ return l:jobid
+endfunction
+" }}}
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
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