--- /dev/null
+let s:save_cpo = &cpoptions
+set cpoptions&vim
+
+let s:clients = {} " { client_id: ctx }
+
+" Vars used by native lsp
+let s:jobidseq = 0
+
+function! s:create_context(client_id, opts) abort
+ if a:client_id <= 0
+ return {}
+ endif
+
+ let l:ctx = {
+ \ 'opts': a:opts,
+ \ 'buffer': '',
+ \ 'content-length': -1,
+ \ 'requests': {},
+ \ 'request_sequence': 0,
+ \ 'on_notifications': {},
+ \ }
+
+ let s:clients[a:client_id] = l:ctx
+
+ return l:ctx
+endfunction
+
+function! s:dispose_context(client_id) abort
+ if a:client_id > 0
+ if has_key(s:clients, a:client_id)
+ unlet s:clients[a:client_id]
+ endif
+ endif
+endfunction
+
+function! s:on_stdout(id, data, event) abort
+ let l:ctx = get(s:clients, a:id, {})
+
+ if empty(l:ctx)
+ return
+ endif
+
+ let l:ctx['buffer'] .= a:data
+
+ while 1
+ if l:ctx['content-length'] < 0
+ " wait for all headers to arrive
+ let l:header_end_index = stridx(l:ctx['buffer'], "\r\n\r\n")
+ if l:header_end_index < 0
+ " no headers found
+ return
+ endif
+ let l:headers = l:ctx['buffer'][:l:header_end_index - 1]
+ let l:ctx['content-length'] = s:get_content_length(l:headers)
+ if l:ctx['content-length'] < 0
+ " invalid content-length
+ call lsp#log('on_stdout', a:id, 'invalid content-length')
+ call s:lsp_stop(a:id)
+ return
+ endif
+ let l:ctx['buffer'] = l:ctx['buffer'][l:header_end_index + 4:] " 4 = len(\r\n\r\n)
+ endif
+
+ if len(l:ctx['buffer']) < l:ctx['content-length']
+ " incomplete message, wait for next buffer to arrive
+ return
+ endif
+
+ " we have full message
+ let l:response_str = l:ctx['buffer'][:l:ctx['content-length'] - 1]
+ let l:ctx['content-length'] = -1
+
+ try
+ let l:response = json_decode(l:response_str)
+ catch
+ call lsp#log('s:on_stdout json_decode failed', v:exception)
+ endtry
+
+ let l:ctx['buffer'] = l:ctx['buffer'][len(l:response_str):]
+
+ if exists('l:response')
+ " call appropriate callbacks
+ let l:on_notification_data = { 'response': l:response }
+ if has_key(l:response, 'method') && has_key(l:response, 'id')
+ " it is a request from a server
+ let l:request = l:response
+ if has_key(l:ctx['opts'], 'on_request')
+ call l:ctx['opts']['on_request'](a:id, l:request)
+ endif
+ elseif has_key(l:response, 'id')
+ " it is a request->response
+ if !(type(l:response['id']) == type(0) || type(l:response['id']) == type(''))
+ " response['id'] can be number | string | null based on the spec
+ call lsp#log('invalid response id. ignoring message', l:response)
+ continue
+ endif
+ if has_key(l:ctx['requests'], l:response['id'])
+ let l:on_notification_data['request'] = l:ctx['requests'][l:response['id']]
+ endif
+ if has_key(l:ctx['opts'], 'on_notification')
+ " call client's on_notification first
+ try
+ call l:ctx['opts']['on_notification'](a:id, l:on_notification_data, 'on_notification')
+ catch
+ call lsp#log('s:on_stdout client option on_notification() error', v:exception, v:throwpoint)
+ endtry
+ endif
+ if has_key(l:ctx['on_notifications'], l:response['id'])
+ " call lsp#client#send({ 'on_notification }) second
+ try
+ call l:ctx['on_notifications'][l:response['id']](a:id, l:on_notification_data, 'on_notification')
+ catch
+ call lsp#log('s:on_stdout client request on_notification() error', v:exception, v:throwpoint)
+ endtry
+ unlet l:ctx['on_notifications'][l:response['id']]
+ endif
+ if has_key(l:ctx['requests'], l:response['id'])
+ unlet l:ctx['requests'][l:response['id']]
+ else
+ call lsp#log('cannot find the request corresponding to response: ', l:response)
+ endif
+ else
+ " it is a notification
+ if has_key(l:ctx['opts'], 'on_notification')
+ try
+ call l:ctx['opts']['on_notification'](a:id, l:on_notification_data, 'on_notification')
+ catch
+ call lsp#log('s:on_stdout on_notification() error', v:exception, v:throwpoint)
+ endtry
+ endif
+ endif
+ endif
+
+ if empty(l:response_str)
+ " buffer is empty, wait for next message to arrive
+ return
+ endif
+ endwhile
+endfunction
+
+function! s:get_content_length(headers) abort
+ for l:header in split(a:headers, "\r\n")
+ let l:kvp = split(l:header, ':')
+ if len(l:kvp) == 2
+ if l:kvp[0] =~? '^Content-Length'
+ return str2nr(l:kvp[1], 10)
+ endif
+ endif
+ endfor
+ return -1
+endfunction
+
+function! s:on_stderr(id, data, event) abort
+ let l:ctx = get(s:clients, a:id, {})
+ if empty(l:ctx)
+ return
+ endif
+ if has_key(l:ctx['opts'], 'on_stderr')
+ try
+ call l:ctx['opts']['on_stderr'](a:id, a:data, a:event)
+ catch
+ call lsp#log('s:on_stderr exception', v:exception, v:throwpoint)
+ echom v:exception
+ endtry
+ endif
+endfunction
+
+function! s:on_exit(id, status, event) abort
+ let l:ctx = get(s:clients, a:id, {})
+ if empty(l:ctx)
+ return
+ endif
+ if has_key(l:ctx['opts'], 'on_exit')
+ try
+ call l:ctx['opts']['on_exit'](a:id, a:status, a:event)
+ catch
+ call lsp#log('s:on_exit exception', v:exception, v:throwpoint)
+ echom v:exception
+ endtry
+ endif
+ call s:dispose_context(a:id)
+endfunction
+
+function! s:lsp_start(opts) abort
+ let l:opts = {
+ \ 'on_stdout': function('s:on_stdout'),
+ \ 'on_stderr': function('s:on_stderr'),
+ \ 'on_exit': function('s:on_exit'),
+ \ 'normalize': 'string'
+ \ }
+ if has_key(a:opts, 'env')
+ let l:opts.env = a:opts.env
+ endif
+
+ if has_key(a:opts, 'cmd')
+ let l:client_id = lsp#utils#job#start(a:opts.cmd, l:opts)
+ elseif has_key(a:opts, 'tcp')
+ let l:client_id = lsp#utils#job#connect(a:opts.tcp, l:opts)
+ else
+ return -1
+ endif
+
+ let l:ctx = s:create_context(l:client_id, a:opts)
+ let l:ctx['id'] = l:client_id
+
+ return l:client_id
+endfunction
+
+function! s:lsp_stop(id) abort
+ call lsp#utils#job#stop(a:id)
+endfunction
+
+let s:send_type_request = 1
+let s:send_type_notification = 2
+let s:send_type_response = 3
+function! s:lsp_send(id, opts, type) abort " opts = { id?, method?, result?, params?, on_notification }
+ let l:ctx = get(s:clients, a:id, {})
+ if empty(l:ctx) | return -1 | endif
+
+ let l:request = { 'jsonrpc': '2.0' }
+
+ if (a:type == s:send_type_request)
+ let l:ctx['request_sequence'] = l:ctx['request_sequence'] + 1
+ let l:request['id'] = l:ctx['request_sequence']
+ let l:ctx['requests'][l:request['id']] = l:request
+ if has_key(a:opts, 'on_notification')
+ let l:ctx['on_notifications'][l:request['id']] = a:opts['on_notification']
+ endif
+ endif
+
+ if has_key(a:opts, 'id')
+ let l:request['id'] = a:opts['id']
+ endif
+ if has_key(a:opts, 'method')
+ let l:request['method'] = a:opts['method']
+ endif
+ if has_key(a:opts, 'params')
+ let l:request['params'] = a:opts['params']
+ endif
+ if has_key(a:opts, 'result')
+ let l:request['result'] = a:opts['result']
+ endif
+ if has_key(a:opts, 'error')
+ let l:request['error'] = a:opts['error']
+ endif
+
+ let l:json = json_encode(l:request)
+ let l:payload = 'Content-Length: ' . len(l:json) . "\r\n\r\n" . l:json
+
+ call lsp#utils#job#send(a:id, l:payload)
+
+ if (a:type == s:send_type_request)
+ let l:id = l:request['id']
+ if get(a:opts, 'sync', 0) !=# 0
+ let l:timeout = get(a:opts, 'sync_timeout', -1)
+ if lsp#utils#_wait(l:timeout, {-> !has_key(l:ctx['requests'], l:request['id'])}, 1) == -1
+ throw 'lsp#client: timeout'
+ endif
+ endif
+ return l:id
+ else
+ return 0
+ endif
+endfunction
+
+function! s:lsp_get_last_request_id(id) abort
+ return s:clients[a:id]['request_sequence']
+endfunction
+
+function! s:lsp_is_error(obj_or_response) abort
+ let l:vt = type(a:obj_or_response)
+ if l:vt == type('')
+ return len(a:obj_or_response) > 0
+ elseif l:vt == type({})
+ return has_key(a:obj_or_response, 'error')
+ endif
+ return 0
+endfunction
+
+
+function! s:is_server_instantiated_notification(notification) abort
+ return !has_key(a:notification, 'request')
+endfunction
+
+function! s:native_out_cb(cbctx, channel, response) abort
+ if !has_key(a:cbctx, 'ctx') | return | endif
+ let l:ctx = a:cbctx['ctx']
+ if has_key(a:response, 'method') && has_key(a:response, 'id')
+ " it is a request from a server
+ let l:request = a:response
+ if has_key(l:ctx['opts'], 'on_request')
+ call l:ctx['opts']['on_request'](l:ctx['id'], l:request)
+ endif
+ elseif !has_key(a:response, 'id') && has_key(l:ctx['opts'], 'on_notification')
+ " it is a notification
+ let l:on_notification_data = { 'response': a:response }
+ try
+ call l:ctx['opts']['on_notification'](l:ctx['id'], l:on_notification_data, 'on_notification')
+ catch
+ call lsp#log('s:native_notification_callback on_notification() error', v:exception, v:throwpoint)
+ endtry
+ endif
+endfunction
+
+function! s:native_err_cb(cbctx, channel, response) abort
+ if !has_key(a:cbctx, 'ctx') | return | endif
+ let l:ctx = a:cbctx['ctx']
+ if has_key(l:ctx['opts'], 'on_stderr')
+ try
+ call l:ctx['opts']['on_stderr'](l:ctx['id'], a:response, 'stderr')
+ catch
+ call lsp#log('s:on_stderr exception', v:exception, v:throwpoint)
+ echom v:exception
+ endtry
+ endif
+endfunction
+
+function! s:native_exit_cb(cbctx, channel, response) abort
+ if !has_key(a:cbctx, 'ctx') | return | endif
+ let l:ctx = a:cbctx['ctx']
+ if has_key(l:ctx['opts'], 'on_exit')
+ try
+ call l:ctx['opts']['on_exit'](l:ctx['id'], a:response, 'exit')
+ catch
+ call lsp#log('s:on_exit exception', v:exception, v:throwpoint)
+ echom v:exception
+ endtry
+ endif
+ call s:dispose_context(l:ctx['id'])
+endfunction
+
+" public apis {{{
+
+function! lsp#client#start(opts) abort
+ if g:lsp_use_native_client && lsp#utils#has_native_lsp_client()
+ if has_key(a:opts, 'cmd')
+ let l:cbctx = {}
+ let l:jobopt = { 'in_mode': 'lsp', 'out_mode': 'lsp', 'noblock': 1,
+ \ 'out_cb': function('s:native_out_cb', [l:cbctx]),
+ \ 'err_cb': function('s:native_err_cb', [l:cbctx]),
+ \ 'exit_cb': function('s:native_exit_cb', [l:cbctx]),
+ \ }
+ 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 s:jobidseq += 1
+ let l:jobid = s:jobidseq " jobid == clientid
+ call lsp#log_verbose('using native lsp client')
+ let l:job = job_start(a:opts['cmd'], l:jobopt)
+ if job_status(l:job) !=? 'run' | return -1 | endif
+ let l:ctx = s:create_context(l:jobid, a:opts)
+ let l:ctx['id'] = l:jobid
+ let l:ctx['job'] = l:job
+ let l:ctx['channel'] = job_getchannel(l:job)
+ let l:cbctx['ctx'] = l:ctx
+ return l:jobid
+ elseif has_key(a:opts, 'tcp')
+ " add support for tcp
+ call lsp#log('tcp not supported when using native lsp client')
+ return -1
+ endif
+ endif
+ return s:lsp_start(a:opts)
+endfunction
+
+function! lsp#client#stop(client_id) abort
+ if g:lsp_use_native_client && lsp#utils#has_native_lsp_client()
+ let l:ctx = get(s:clients, a:client_id, {})
+ if empty(l:ctx) | return | endif
+ call job_stop(l:ctx['job'])
+ else
+ return s:lsp_stop(a:client_id)
+ endif
+endfunction
+
+function! lsp#client#send_request(client_id, opts) abort
+ if g:lsp_use_native_client && lsp#utils#has_native_lsp_client()
+ let l:ctx = get(s:clients, a:client_id, {})
+ if empty(l:ctx) | return -1 | endif
+ let l:request = {}
+ " id shouldn't be passed to request as vim will overwrite it. refer to :h language-server-protocol
+ if has_key(a:opts, 'method') | let l:request['method'] = a:opts['method'] | endif
+ if has_key(a:opts, 'params') | let l:request['params'] = a:opts['params'] | endif
+
+ call ch_sendexpr(l:ctx['channel'], l:request, { 'callback': function('s:on_response_native', [l:ctx, l:request]) })
+ let l:ctx['requests'][l:request['id']] = l:request
+ if has_key(a:opts, 'on_notification')
+ let l:ctx['on_notifications'][l:request['id']] = a:opts['on_notification']
+ endif
+ if get(a:opts, 'sync', 0) !=# 0
+ let l:timeout = get(a:opts, 'sync_timeout', -1)
+ if lsp#utils#_wait(l:timeout, {-> !has_key(l:ctx['requests'], l:request['id'])}, 1) == -1
+ throw 'lsp#client#send_request: timeout'
+ endif
+ endif
+ let l:ctx['request_sequence'] = l:request['id']
+ return l:request['id']
+ else
+ return s:lsp_send(a:client_id, a:opts, s:send_type_request)
+ endif
+endfunction
+
+function! s:on_response_native(ctx, request, channel, response) abort
+ " request -> response
+ let l:on_notification_data = { 'response': a:response, 'request': a:request }
+ if has_key(a:ctx['opts'], 'on_notification')
+ " call client's on_notification first
+ try
+ call a:ctx['opts']['on_notification'](a:ctx['id'], l:on_notification_data, 'on_notification')
+ catch
+ call lsp#log('s:on_response_native client option on_notification() error', v:exception, v:throwpoint)
+ endtry
+ endif
+ if has_key(a:ctx['on_notifications'], a:request['id'])
+ " call lsp#client#send({ 'on_notification' }) second
+ try
+ call a:ctx['on_notifications'][a:request['id']](a:ctx['id'], l:on_notification_data, 'on_notification')
+ catch
+ call lsp#log('s:on_response_native client request on_notification() error', v:exception, v:throwpoint, a:request, a:response)
+ endtry
+ unlet a:ctx['on_notifications'][a:response['id']]
+ if has_key(a:ctx['requests'], a:response['id'])
+ unlet a:ctx['requests'][a:response['id']]
+ else
+ call lsp#log('cannot find the request corresponding to response: ', a:response)
+ endif
+ endif
+endfunction
+
+function! lsp#client#send_notification(client_id, opts) abort
+ if g:lsp_use_native_client && lsp#utils#has_native_lsp_client()
+ let l:ctx = get(s:clients, a:client_id, {})
+ if empty(l:ctx) | return -1 | endif
+ let l:request = {}
+ if has_key(a:opts, 'method') | let l:request['method'] = a:opts['method'] | endif
+ if has_key(a:opts, 'params') | let l:request['params'] = a:opts['params'] | endif
+ call ch_sendexpr(l:ctx['channel'], l:request)
+ return 0
+ else
+ return s:lsp_send(a:client_id, a:opts, s:send_type_notification)
+ endif
+endfunction
+
+function! lsp#client#send_response(client_id, opts) abort
+ if g:lsp_use_native_client && lsp#utils#has_native_lsp_client()
+ let l:ctx = get(s:clients, a:client_id, {})
+ if empty(l:ctx) | return -1 | endif
+ let l:request = {}
+ if has_key(a:opts, 'id') | let l:request['id'] = a:opts['id'] | endif
+ if has_key(a:opts, 'result') | let l:request['result'] = a:opts['result'] | endif
+ if has_key(a:opts, 'error') | let l:request['error'] = a:opts['error'] | endif
+ try
+ call ch_sendexpr(l:ctx['channel'], l:request)
+ catch
+ " vim only supports id as number and fails when string, hence add a try catch: https://github.com/vim/vim/issues/14091
+ call lsp#log('lsp#client#send_response error', v:exception, v:throwpoint,
+ \ has_key(l:request, 'id') && type(l:request['id']) != type(1))
+ endtry
+ return 0
+ else
+ return s:lsp_send(a:client_id, a:opts, s:send_type_response)
+ endif
+endfunction
+
+function! lsp#client#get_last_request_id(client_id) abort
+ return s:lsp_get_last_request_id(a:client_id)
+endfunction
+
+function! lsp#client#is_error(obj_or_response) abort
+ return s:lsp_is_error(a:obj_or_response)
+endfunction
+
+function! lsp#client#error_message(obj_or_response) abort
+ try
+ return a:obj_or_response['error']['data']['message']
+ catch
+ endtry
+ try
+ return a:obj_or_response['error']['message']
+ catch
+ endtry
+ return string(a:obj_or_response)
+endfunction
+
+function! lsp#client#is_server_instantiated_notification(notification) abort
+ return s:is_server_instantiated_notification(a:notification)
+endfunction
+
+" }}}
+
+let &cpoptions = s:save_cpo
+unlet s:save_cpo
+" vim sw=4 ts=4 et
projects / etc / vim.git / blobdiff