Highlight more compiler directives

Author: taku0

swift-mode-font-lock.el

@@ -548,9 +548,9 @@ Return nil otherwise."
   "Keywords used as constants.")
 
 (defconst swift-mode:preprocessor-keywords
-  '("#available" "#colorLiteral" "#column" "#else" "#elseif" "#endif"
-    "#fileLiteral" "#file" "#function" "#if" "#imageLiteral" "#keypath" "#line"
-    "#selector" "#sourceLocation")
+  '("#available" "#colorLiteral" "#column" "#dsohandle" "#else" "#elseif"
+    "#endif" "#error" "#file" "#fileLiteral" "#function" "#if" "#imageLiteral"
+    "#keyPath" "#line" "#selector" "#sourceLocation" "#warning")
   "Keywords that begin with a number sign (#).")
 
 (defconst swift-mode:declaration-keywords
@@ -580,8 +580,10 @@ Excludes true, false, and keywords begin with a number sign.")
   "Keywords reserved in particular contexts.")
 
 (defconst swift-mode:build-config-keywords
-  '("os" "arch" "swift" "OSX" "iOS" "watchOS" "tvOS" "i386" "x86_64" "arm"
-    "arm64" "iOSApplicationExtension" "OSXApplicationExtension")
+  '("os" "arch" "swift" "compiler" "canImport" "targetEnvironment"
+    "OSX" "macOS" "iOS" "watchOS" "tvOS" "i386" "x86_64" "arm" "arm64"
+    "iOSApplicationExtension" "OSXApplicationExtension"
+    "macOSApplicationExtension" "simulator")
   "Keywords for build configuration statements.")
 
 (defconst swift-mode:standard-precedence-groups