functions for statusline components (#39)

* functions for statusline components

* some accidental Js

* add bufh param

* removing an extra space after icon

* [WIP] statusline component factory function

* call factory function in init

* add component functions to statusline after config init

* adding spaces after the icons that need it

* remove icon param

* replace hard coded space in favor of indicator_separator

lua/lsp-status.lua

@@ -66,6 +66,7 @@ local function config(user_config)
   messaging._init(messages, _config)
   if _config.current_function then current_function._init(messages, _config) end
   statusline._init(messages, _config)
+  statusline = vim.tbl_extend('keep', statusline, statusline._get_component_functions())
 end
 
 --- Register a new server for messages.
@@ -176,6 +177,10 @@ local M = {
   config = config,
   on_attach = on_attach,
   status = statusline.status,
+  status_errors = statusline.errors,
+  status_warnings = statusline.warnings,
+  status_info = statusline.info,
+  status_hints = statusline.hints,
   capabilities = messaging.capabilities
 }
 

lua/lsp-status/statusline.lua

@@ -1,15 +1,41 @@
 local config = {}
 
-local function init(_, _config)
-  config = vim.tbl_extend('force', config, _config)
-end
+local _errors
+local _warnings
+local _hints
+local _info
+local icons
 
 local diagnostics = require('lsp-status/diagnostics')
 local messages = require('lsp-status/messaging').messages
 local aliases = {
   pyls_ms = 'MPLS',
 }
 
+local function make_statusline_component(diagnostics_key)
+  return function(bufh)
+    bufh = bufh or vim.api.nvim_get_current_buf()
+    local icon = icons[diagnostics_key] .. config.indicator_separator
+    return (icon or '') .. diagnostics(bufh)[diagnostics_key]
+  end
+end
+
+local function init(_, _config)
+  config = vim.tbl_extend('force', config, _config)
+
+  icons = {
+    errors = config.indicator_errors,
+    warnings = config.indicator_warnings,
+    hints = config.indicator_hint,
+    info = config.indicator_info,
+  }
+
+  _errors = make_statusline_component('errors')
+  _warnings = make_statusline_component('warnings')
+  _hints = make_statusline_component('hints')
+  _info = make_statusline_component('info')
+end
+
 local function statusline_lsp(bufnr)
   bufnr = bufnr or 0
   if #vim.lsp.buf_get_clients(bufnr) == 0 then
@@ -97,9 +123,19 @@ local function statusline_lsp(bufnr)
   return symbol .. config.indicator_ok .. ' '
 end
 
+local function get_component_functions()
+  return {
+    errors = _errors,
+    warnings = _warnings,
+    hints = _hints,
+    info = _info,
+  }
+end
+
 local M = {
   _init = init,
-  status = statusline_lsp
+  status = statusline_lsp,
+  _get_component_functions = get_component_functions
 }
 
 return M