Fix deprecated vim.lsp.diagnostic.get_count call

Author: Drake Nelson

lua/galaxyline/provider_diagnostic.lua

@@ -21,7 +21,9 @@ local function get_nvim_lsp_diagnostic(diag_type)
     local count = 0
 
     for _, client in ipairs(active_clients) do
-       count = count + lsp.diagnostic.get_count(api.nvim_get_current_buf(),diag_type,client.id)
+       local opts = { severity = diag_type }
+       opts.namespace = vim.diagnostic.get_namespace(client.id)
+       count = count + vim.diagnostic.get(api.nvim_get_current_buf(),opts)
     end
 
     if count ~= 0 then return count .. ' ' end
@@ -32,7 +34,7 @@ function M.get_diagnostic_error()
   if vim.fn.exists('*coc#rpc#start_server') == 1 then
     return get_coc_diagnostic('error')
   elseif not vim.tbl_isempty(lsp.buf_get_clients(0)) then
-    return get_nvim_lsp_diagnostic('Error')
+    return get_nvim_lsp_diagnostic(vim.diagnostic.severity.ERROR)
   end
   return ''
 end
@@ -41,7 +43,7 @@ function M.get_diagnostic_warn()
   if vim.fn.exists('*coc#rpc#start_server') == 1 then
     return get_coc_diagnostic('warning')
   elseif not vim.tbl_isempty(lsp.buf_get_clients(0)) then
-    return get_nvim_lsp_diagnostic('Warning')
+    return get_nvim_lsp_diagnostic(vim.diagnostic.severity.WARN)
   end
   return ''
 end
@@ -50,7 +52,7 @@ function M.get_diagnostic_hint()
   if vim.fn.exists('*coc#rpc#start_server') == 1 then
     return get_coc_diagnostic('hint')
   elseif not vim.tbl_isempty(lsp.buf_get_clients(0)) then
-    return get_nvim_lsp_diagnostic('Hint')
+    return get_nvim_lsp_diagnostic(vim.diagnostic.severity.HINT)
   end
   return ''
 end
@@ -59,7 +61,7 @@ function M.get_diagnostic_info()
   if vim.fn.exists('*coc#rpc#start_server') == 1 then
     return get_coc_diagnostic('information')
   elseif not vim.tbl_isempty(lsp.buf_get_clients(0)) then
-    return get_nvim_lsp_diagnostic('Information')
+    return get_nvim_lsp_diagnostic(vim.diagnostic.severity.INFO)
   end
   return ''
 end