Add extention for yegappan/lsp

Show errors and warnigs with yegappans/lsp plugin.

autoload/airline/extensions.vim

@@ -471,6 +471,11 @@ function! airline#extensions#load()
     call add(s:loaded_ext, 'battery')
   endif
 
+  if (get(g:, 'airline#extensions#vim9lsp#enabled', 1) && exists('*lsp#errorCount'))
+    call airline#extensions#vim9lsp#init(s:ext)
+    call add(s:loaded_ext, 'vim9lsp')
+  endif
+
   if !get(g:, 'airline#extensions#disable_rtp_load', 0)
     " load all other extensions, which are not part of the default distribution.
     " (autoload/airline/extensions/*.vim outside of our s:script_path).

autoload/airline/extensions/vim9lsp.vim

@@ -0,0 +1,27 @@
+" MIT License. Copyright (c) 2021       DEMAREST Maxime (maxime@indelog.fr)
+" Plugin: https://github.com/yegappan/lsp
+" vim: et ts=2 sts=2 sw=2
+
+scriptencoding utf-8
+
+if !exists('*lsp#errorCount')
+    finish
+endif
+
+let s:error_symbol = get(g:, 'airline#extensions#vim9lsp#error_symbol', 'E:')
+let s:warning_symbol = get(g:, 'airline#extensions#vim9lsp#warning_symbol', 'W:')
+
+function! airline#extensions#vim9lsp#get_warnings() abort
+    let res = get(lsp#errorCount(), 'Warn', 0)
+    return res > 0 ? s:warning_symbol . res : ''
+endfunction
+
+function! airline#extensions#vim9lsp#get_errors() abort
+    let res = get(lsp#errorCount(), 'Error', 0)
+    return res > 0 ? s:error_symbol . res : ''
+endfunction
+
+function! airline#extensions#vim9lsp#init(ext) abort
+  call airline#parts#define_function('vim9lsp_warning_count', 'airline#extensions#vim9lsp#get_warnings')
+  call airline#parts#define_function('vim9lsp_error_count', 'airline#extensions#vim9lsp#get_errors')
+endfunction

autoload/airline/init.vim

@@ -191,6 +191,7 @@ function! airline#init#bootstrap()
         \ 'neomake_warning_count', 'ale_error_count', 'ale_warning_count',
         \ 'lsp_error_count', 'lsp_warning_count', 'scrollbar',
         \ 'nvimlsp_error_count', 'nvimlsp_warning_count',
+        \ 'vim9lsp_warning_count', 'vim9lsp_error_count',
         \ 'languageclient_error_count', 'languageclient_warning_count',
         \ 'coc_warning_count', 'coc_error_count', 'vista', 'battery'])
 
@@ -242,9 +243,9 @@ function! airline#init#sections()
     endif
   endif
   if !exists('g:airline_section_error')
-    let g:airline_section_error = airline#section#create(['ycm_error_count', 'syntastic-err', 'eclim', 'neomake_error_count', 'ale_error_count', 'lsp_error_count', 'nvimlsp_error_count', 'languageclient_error_count', 'coc_error_count'])
+    let g:airline_section_error = airline#section#create(['ycm_error_count', 'syntastic-err', 'eclim', 'neomake_error_count', 'ale_error_count', 'lsp_error_count', 'nvimlsp_error_count', 'languageclient_error_count', 'coc_error_count', 'vim9lsp_error_count'])
   endif
   if !exists('g:airline_section_warning')
-    let g:airline_section_warning = airline#section#create(['ycm_warning_count',  'syntastic-warn', 'neomake_warning_count', 'ale_warning_count', 'lsp_warning_count', 'nvimlsp_warning_count', 'languageclient_warning_count', 'whitespace', 'coc_warning_count'])
+    let g:airline_section_warning = airline#section#create(['ycm_warning_count',  'syntastic-warn', 'neomake_warning_count', 'ale_warning_count', 'lsp_warning_count', 'nvimlsp_warning_count', 'languageclient_warning_count', 'whitespace', 'coc_warning_count', 'vim9lsp_warning_count'])
   endif
 endfunction

doc/airline.txt

@@ -1460,6 +1460,18 @@ Unite <https://github.com/Shougo/unite.vim>
 * enable/disable unite integration >
   let g:airline#extensions#unite#enabled = 1
 
+-------------------------------------                     *airline-vim9lsp*
+vim9lsp <https://github.com/yegappan/lsp>
+
+* enable/disable vim9lsp integration >
+  let airline#extensions#vim9lsp#enabled = 1
+<
+* vim9lsp error_symbol >
+  let airline#extensions#vim9lsp#error_symbol = 'E:'
+<
+* vim9lsp warning >
+  let airline#extensions#vim9lsp#warning_symbol = 'W:'
+<
 -------------------------------------                     *airline-vimagit*
 vimagit <https://github.com/jreybert/vimagit>