2 files changed, 498 insertions, 0 deletions
diff --git a/start/lspconfig-0.1.8/lua/lspconfig/ui/lspinfo.lua b/start/lspconfig-0.1.8/lua/lspconfig/ui/lspinfo.lua
new file mode 100644
index 0000000..886014a
--- /dev/null
+++ b/start/lspconfig-0.1.8/lua/lspconfig/ui/lspinfo.lua
@@ -0,0 +1,369 @@
+local api, fn = vim.api, vim.fn
+local windows = require 'lspconfig.ui.windows'
+local util = require 'lspconfig.util'
+
+local error_messages = {
+  cmd_not_found = 'Unable to find executable. Please check your path and ensure the server is installed',
+  no_filetype_defined = 'No filetypes defined, Please define filetypes in setup()',
+  root_dir_not_found = 'Not found.',
+  async_root_dir_function = 'Asynchronous root_dir functions are not supported in :LspInfo',
+}
+
+local helptags = {
+  [error_messages.no_filetype_defined] = { 'lspconfig-setup' },
+  [error_messages.root_dir_not_found] = { 'lspconfig-root-detection' },
+}
+
+local function trim_blankspace(cmd)
+  local trimmed_cmd = {}
+  for _, str in ipairs(cmd) do
+    trimmed_cmd[#trimmed_cmd + 1] = str:match '^%s*(.*)'
+  end
+  return trimmed_cmd
+end
+
+local function indent_lines(lines, offset)
+  return vim.tbl_map(function(val)
+    return offset .. val
+  end, lines)
+end
+
+local function remove_newlines(cmd)
+  cmd = trim_blankspace(cmd)
+  cmd = table.concat(cmd, ' ')
+  cmd = vim.split(cmd, '\n')
+  cmd = trim_blankspace(cmd)
+  cmd = table.concat(cmd, ' ')
+  return cmd
+end
+
+local cmd_type = {
+  ['function'] = function(_)
+    return '<function>', 'NA'
+  end,
+  ['table'] = function(config)
+    local cmd = remove_newlines(config.cmd)
+    if vim.fn.executable(config.cmd[1]) == 1 then
+      return cmd, 'true'
+    end
+    return cmd, error_messages.cmd_not_found
+  end,
+}
+
+local function make_config_info(config, bufnr)
+  local config_info = {}
+  config_info.name = config.name
+  config_info.helptags = {}
+
+  if config.cmd then
+    config_info.cmd, config_info.cmd_is_executable = cmd_type[type(config.cmd)](config)
+  else
+    config_info.cmd = 'cmd not defined'
+    config_info.cmd_is_executable = 'NA'
+  end
+
+  local buffer_dir = api.nvim_buf_call(bufnr, function()
+    return vim.fn.expand '%:p:h'
+  end)
+
+  if config.get_root_dir then
+    local root_dir
+    local co = coroutine.create(function()
+      local status, err = pcall(function()
+        root_dir = config.get_root_dir(buffer_dir)
+      end)
+      if not status then
+        vim.notify(('[lspconfig] unhandled error: %s'):format(tostring(err), vim.log.levels.WARN))
+      end
+    end)
+    coroutine.resume(co)
+    if root_dir then
+      config_info.root_dir = root_dir
+    elseif coroutine.status(co) == 'suspended' then
+      config_info.root_dir = error_messages.async_root_dir_function
+    else
+      config_info.root_dir = error_messages.root_dir_not_found
+    end
+  else
+    config_info.root_dir = error_messages.root_dir_not_found
+    vim.list_extend(config_info.helptags, helptags[error_messages.root_dir_not_found])
+  end
+
+  config_info.autostart = (config.autostart and 'true') or 'false'
+  config_info.handlers = table.concat(vim.tbl_keys(config.handlers), ', ')
+  config_info.filetypes = table.concat(config.filetypes or {}, ', ')
+
+  local lines = {
+    'Config: ' .. config_info.name,
+  }
+
+  local info_lines = {
+    'filetypes:         ' .. config_info.filetypes,
+    'root directory:    ' .. config_info.root_dir,
+    'cmd:               ' .. config_info.cmd,
+    'cmd is executable: ' .. config_info.cmd_is_executable,
+    'autostart:         ' .. config_info.autostart,
+    'custom handlers:   ' .. config_info.handlers,
+  }
+
+  if vim.tbl_count(config_info.helptags) > 0 then
+    local help = vim.tbl_map(function(helptag)
+      return string.format(':h %s', helptag)
+    end, config_info.helptags)
+    info_lines = vim.list_extend({
+      'Refer to ' .. table.concat(help, ', ') .. ' for help.',
+    }, info_lines)
+  end
+
+  vim.list_extend(lines, indent_lines(info_lines, '\t'))
+
+  return lines
+end
+
+---@param client vim.lsp.Client
+---@param fname string
+local function make_client_info(client, fname)
+  local client_info = {}
+
+  client_info.cmd = cmd_type[type(client.config.cmd)](client.config)
+  local workspace_folders = fn.has 'nvim-0.9' == 1 and client.workspace_folders or client.workspaceFolders
+  local uv = vim.loop
+  local is_windows = uv.os_uname().version:match 'Windows'
+  fname = uv.fs_realpath(fname) or fn.fnamemodify(fn.resolve(fname), ':p')
+  if is_windows then
+    fname:gsub('%/', '%\\')
+  end
+
+  if workspace_folders then
+    for _, schema in ipairs(workspace_folders) do
+      local matched = true
+      local root_dir = uv.fs_realpath(schema.name)
+      if root_dir == nil or fname:sub(1, root_dir:len()) ~= root_dir then
+        matched = false
+      end
+
+      if matched then
+        client_info.root_dir = schema.name
+        break
+      end
+    end
+  end
+
+  if not client_info.root_dir then
+    client_info.root_dir = 'Running in single file mode.'
+  end
+  client_info.filetypes = table.concat(client.config.filetypes or {}, ', ')
+  client_info.autostart = (client.config.autostart and 'true') or 'false'
+  client_info.attached_buffers_list = table.concat(vim.lsp.get_buffers_by_client_id(client.id), ', ')
+
+  local lines = {
+    '',
+    'Client: '
+      .. client.name
+      .. ' (id: '
+      .. tostring(client.id)
+      .. ', bufnr: ['
+      .. client_info.attached_buffers_list
+      .. '])',
+  }
+
+  local info_lines = {
+    'filetypes:       ' .. client_info.filetypes,
+    'autostart:       ' .. client_info.autostart,
+    'root directory:  ' .. client_info.root_dir,
+    'cmd:             ' .. client_info.cmd,
+  }
+
+  if client.config.lspinfo then
+    local server_specific_info = client.config.lspinfo(client.config)
+    info_lines = vim.list_extend(info_lines, server_specific_info)
+  end
+
+  vim.list_extend(lines, indent_lines(info_lines, '\t'))
+
+  return lines
+end
+
+return function()
+  -- These options need to be cached before switching to the floating
+  -- buffer.
+  local original_bufnr = api.nvim_get_current_buf()
+  local buf_clients = util.get_lsp_clients { bufnr = original_bufnr }
+  local clients = util.get_lsp_clients()
+  local buffer_filetype = vim.bo.filetype
+  local fname = api.nvim_buf_get_name(original_bufnr)
+
+  windows.default_options.wrap = true
+  windows.default_options.breakindent = true
+  windows.default_options.breakindentopt = 'shift:25'
+  windows.default_options.showbreak = 'NONE'
+
+  local win_info = windows.percentage_range_window(0.8, 0.7)
+  local bufnr, win_id = win_info.bufnr, win_info.win_id
+  vim.bo.bufhidden = 'wipe'
+
+  local buf_lines = {}
+
+  local buf_client_ids = {}
+  for _, client in ipairs(buf_clients) do
+    buf_client_ids[#buf_client_ids + 1] = client.id
+  end
+
+  local other_active_clients = {}
+  for _, client in ipairs(clients) do
+    if not vim.tbl_contains(buf_client_ids, client.id) then
+      other_active_clients[#other_active_clients + 1] = client
+    end
+  end
+
+  -- insert the tips at the top of window
+  buf_lines[#buf_lines + 1] = 'Press q or <Esc> to close this window. Press <Tab> to view server doc.'
+
+  local header = {
+    '',
+    'Language client log: ' .. (vim.lsp.get_log_path()),
+    'Detected filetype:   ' .. buffer_filetype,
+  }
+  vim.list_extend(buf_lines, header)
+
+  local buffer_clients_header = {
+    '',
+    tostring(#vim.tbl_keys(buf_clients)) .. ' client(s) attached to this buffer: ',
+  }
+
+  vim.list_extend(buf_lines, buffer_clients_header)
+  for _, client in ipairs(buf_clients) do
+    local client_info = make_client_info(client, fname)
+    vim.list_extend(buf_lines, client_info)
+  end
+
+  local other_active_section_header = {
+    '',
+    tostring(#other_active_clients) .. ' active client(s) not attached to this buffer: ',
+  }
+  if not vim.tbl_isempty(other_active_clients) then
+    vim.list_extend(buf_lines, other_active_section_header)
+  end
+  for _, client in ipairs(other_active_clients) do
+    local client_info = make_client_info(client, fname)
+    vim.list_extend(buf_lines, client_info)
+  end
+
+  local other_matching_configs_header = {
+    '',
+    'Other clients that match the filetype: ' .. buffer_filetype,
+    '',
+  }
+
+  local other_matching_configs = util.get_other_matching_providers(buffer_filetype)
+
+  if not vim.tbl_isempty(other_matching_configs) then
+    vim.list_extend(buf_lines, other_matching_configs_header)
+    for _, config in ipairs(other_matching_configs) do
+      vim.list_extend(buf_lines, make_config_info(config, original_bufnr))
+    end
+  end
+
+  local matching_config_header = {
+    '',
+    'Configured servers list: ' .. table.concat(util.available_servers(), ', '),
+  }
+
+  vim.list_extend(buf_lines, matching_config_header)
+
+  local fmt_buf_lines = indent_lines(buf_lines, ' ')
+
+  api.nvim_buf_set_lines(bufnr, 0, -1, true, fmt_buf_lines)
+  vim.bo.modifiable = false
+  vim.bo.filetype = 'lspinfo'
+
+  local augroup = api.nvim_create_augroup('lspinfo', { clear = false })
+
+  local function close()
+    api.nvim_clear_autocmds { group = augroup, buffer = bufnr }
+    if api.nvim_win_is_valid(win_id) then
+      api.nvim_win_close(win_id, true)
+    end
+  end
+
+  vim.keymap.set('n', '<ESC>', close, { buffer = bufnr, nowait = true })
+  vim.keymap.set('n', 'q', close, { buffer = bufnr, nowait = true })
+  api.nvim_create_autocmd({ 'BufDelete', 'BufHidden' }, {
+    once = true,
+    buffer = bufnr,
+    callback = close,
+    group = augroup,
+  })
+
+  vim.fn.matchadd(
+    'Error',
+    error_messages.no_filetype_defined
+      .. '.\\|'
+      .. 'cmd not defined\\|'
+      .. error_messages.cmd_not_found
+      .. '\\|'
+      .. error_messages.root_dir_not_found
+  )
+
+  vim.cmd [[
+    syn keyword String true
+    syn keyword Error false
+    syn match LspInfoFiletypeList /\<filetypes\?:\s*\zs.*\ze/ contains=LspInfoFiletype
+    syn match LspInfoFiletype /\k\+/ contained
+    syn match LspInfoTitle /^\s*\%(Client\|Config\):\s*\zs\S\+\ze/
+    syn match LspInfoListList /^\s*Configured servers list:\s*\zs.*\ze/ contains=LspInfoList
+    syn match LspInfoList /\S\+/ contained
+  ]]
+
+  api.nvim_buf_add_highlight(bufnr, 0, 'LspInfoTip', 0, 0, -1)
+
+  local function show_doc()
+    local lines = {}
+    local function append_lines(config)
+      if not config then
+        return
+      end
+      local desc = vim.tbl_get(config, 'document_config', 'docs', 'description')
+      if desc then
+        lines[#lines + 1] = string.format('# %s', config.name)
+        lines[#lines + 1] = ''
+        vim.list_extend(lines, vim.split(desc, '\n'))
+        lines[#lines + 1] = ''
+      end
+    end
+
+    lines[#lines + 1] = 'Press <Tab> to close server info.'
+    lines[#lines + 1] = ''
+
+    for _, client in ipairs(buf_clients) do
+      local config = require('lspconfig.configs')[client.name]
+      append_lines(config)
+    end
+
+    for _, config in ipairs(other_matching_configs) do
+      append_lines(config)
+    end
+
+    local info = windows.percentage_range_window(0.8, 0.7)
+    lines = indent_lines(lines, ' ')
+    api.nvim_buf_set_lines(info.bufnr, 0, -1, false, lines)
+    api.nvim_buf_add_highlight(info.bufnr, 0, 'LspInfoTip', 0, 0, -1)
+
+    vim.bo[info.bufnr].filetype = 'markdown'
+    vim.bo[info.bufnr].syntax = 'on'
+    vim.wo[info.win_id].concealcursor = 'niv'
+    vim.wo[info.win_id].conceallevel = 2
+    vim.wo[info.win_id].breakindent = false
+    vim.wo[info.win_id].breakindentopt = ''
+
+    local function close_doc_win()
+      if api.nvim_win_is_valid(info.win_id) then
+        api.nvim_win_close(info.win_id, true)
+      end
+    end
+
+    vim.keymap.set('n', '<TAB>', close_doc_win, { buffer = info.bufnr })
+  end
+
+  vim.keymap.set('n', '<TAB>', show_doc, { buffer = true, nowait = true })
+end
diff --git a/start/lspconfig-0.1.8/lua/lspconfig/ui/windows.lua b/start/lspconfig-0.1.8/lua/lspconfig/ui/windows.lua
new file mode 100644
index 0000000..dc02c9e
--- /dev/null
+++ b/start/lspconfig-0.1.8/lua/lspconfig/ui/windows.lua
@@ -0,0 +1,129 @@
+-- The following is extracted and modified from plenary.vnim by
+-- TJ Devries. It is not a stable API, and is expected to change
+--
+local api = vim.api
+
+local function apply_defaults(original, defaults)
+  if original == nil then
+    original = {}
+  end
+
+  original = vim.deepcopy(original)
+
+  for k, v in pairs(defaults) do
+    if original[k] == nil then
+      original[k] = v
+    end
+  end
+
+  return original
+end
+
+local win_float = {}
+
+win_float.default_options = {}
+
+function win_float.default_opts(options)
+  options = apply_defaults(options, { percentage = 0.9 })
+
+  local width = math.floor(vim.o.columns * options.percentage)
+  local height = math.floor(vim.o.lines * options.percentage)
+
+  local top = math.floor(((vim.o.lines - height) / 2))
+  local left = math.floor((vim.o.columns - width) / 2)
+
+  local opts = {
+    relative = 'editor',
+    row = top,
+    col = left,
+    width = width,
+    height = height,
+    style = 'minimal',
+    border = {
+      { ' ', 'NormalFloat' },
+      { ' ', 'NormalFloat' },
+      { ' ', 'NormalFloat' },
+      { ' ', 'NormalFloat' },
+      { ' ', 'NormalFloat' },
+      { ' ', 'NormalFloat' },
+      { ' ', 'NormalFloat' },
+      { ' ', 'NormalFloat' },
+    },
+  }
+
+  opts.border = options.border and options.border
+
+  return opts
+end
+
+--- Create window that takes up certain percentags of the current screen.
+---
+--- Works regardless of current buffers, tabs, splits, etc.
+--@param col_range number | Table:
+--                  If number, then center the window taking up this percentage of the screen.
+--                  If table, first index should be start, second_index should be end
+--@param row_range number | Table:
+--                  If number, then center the window taking up this percentage of the screen.
+--                  If table, first index should be start, second_index should be end
+function win_float.percentage_range_window(col_range, row_range, options)
+  options = apply_defaults(options, win_float.default_options)
+
+  local win_opts = win_float.default_opts(options)
+  win_opts.relative = 'editor'
+
+  local height_percentage, row_start_percentage
+  if type(row_range) == 'number' then
+    assert(row_range <= 1)
+    assert(row_range > 0)
+    height_percentage = row_range
+    row_start_percentage = (1 - height_percentage) / 3
+  elseif type(row_range) == 'table' then
+    height_percentage = row_range[2] - row_range[1]
+    row_start_percentage = row_range[1]
+  else
+    error(string.format("Invalid type for 'row_range': %p", row_range))
+  end
+
+  win_opts.height = math.ceil(vim.o.lines * height_percentage)
+  win_opts.row = math.ceil(vim.o.lines * row_start_percentage)
+  win_opts.border = options.border or 'none'
+
+  local width_percentage, col_start_percentage
+  if type(col_range) == 'number' then
+    assert(col_range <= 1)
+    assert(col_range > 0)
+    width_percentage = col_range
+    col_start_percentage = (1 - width_percentage) / 2
+  elseif type(col_range) == 'table' then
+    width_percentage = col_range[2] - col_range[1]
+    col_start_percentage = col_range[1]
+  else
+    error(string.format("Invalid type for 'col_range': %p", col_range))
+  end
+
+  win_opts.col = math.floor(vim.o.columns * col_start_percentage)
+  win_opts.width = math.floor(vim.o.columns * width_percentage)
+
+  local bufnr = options.bufnr or api.nvim_create_buf(false, true)
+  local win_id = api.nvim_open_win(bufnr, true, win_opts)
+  api.nvim_win_set_option(win_id, 'winhl', 'FloatBorder:LspInfoBorder')
+
+  for k, v in pairs(win_float.default_options) do
+    if k ~= 'border' then
+      vim.opt_local[k] = v
+    end
+  end
+
+  api.nvim_win_set_buf(win_id, bufnr)
+
+  api.nvim_win_set_option(win_id, 'cursorcolumn', false)
+  api.nvim_buf_set_option(bufnr, 'tabstop', 2)
+  api.nvim_buf_set_option(bufnr, 'shiftwidth', 2)
+
+  return {
+    bufnr = bufnr,
+    win_id = win_id,
+  }
+end
+
+return win_float