[Feature] Add swift support (#1002)

ftplugin/swift.lua

@@ -0,0 +1,4 @@
+require("lang.swift").format()
+require("lang.swift").lint()
+require("lang.swift").lsp()
+require("lang.swift").dap()

lua/default-config.lua

@@ -181,9 +181,10 @@ require("lang.php").config()
 require("lang.python").config()
 require("lang.ruby").config()
 require("lang.rust").config()
-require("lang.scala").config()
 require("lang.sh").config()
+require("lang.scala").config()
 require("lang.svelte").config()
+require("lang.swift").config()
 require("lang.terraform").config()
 require("lang.tex").config()
 require("lang.vim").config()

lua/lang/swift.lua

@@ -0,0 +1,52 @@
+local M = {}
+
+M.config = function()
+  O.lang.swift = {
+    formatter = {
+      exe = "swiftformat",
+      args = {},
+      stdin = true,
+    },
+  }
+end
+
+M.format = function()
+  -- TODO: implement formatter (if applicable)
+  return "No formatter configured!"
+end
+
+M.lint = function()
+  O.formatters.filetype["swift"] = {
+    function()
+      return {
+        exe = O.lang.swift.formatter.exe,
+        args = O.lang.swift.formatter.args,
+        stdin = O.lang.swift.formatter.stdin,
+      }
+    end,
+  }
+
+  require("formatter.config").set_defaults {
+    logging = false,
+    filetype = O.formatters.filetype,
+  }
+end
+
+M.lsp = function()
+  if require("lv-utils").check_lsp_client_active "sourcekit" then
+    return
+  end
+
+  require("lspconfig").sourcekit.setup {
+    cmd = { "xcrun", "sourcekit-lsp" },
+    on_attach = require("lsp").common_on_attach,
+    filetypes = { "swift" },
+  }
+end
+
+M.dap = function()
+  -- TODO: implement dap
+  return "No DAP configured!"
+end
+
+return M