Permit modes to provide their own TokenMarker implementation while still using the keywords.txt file.

app/src/processing/app/Mode.java

@@ -43,7 +43,7 @@ public abstract class Mode {
 
   protected File folder;
 
-  protected PdeKeywords tokenMarker = new PdeKeywords();
+  protected TokenMarker tokenMarker;
   protected HashMap<String, String> keywordToReference = 
     new HashMap<String, String>();
   
@@ -94,6 +94,7 @@ public abstract class Mode {
   public Mode(Base base, File folder) {
     this.base = base;
     this.folder = folder;
+    tokenMarker = createTokenMarker();
 
     // Get paths for the libraries and examples in the mode folder
     examplesFolder = new File(folder, "examples");
@@ -912,6 +913,10 @@ public abstract class Mode {
   public TokenMarker getTokenMarker() {
     return tokenMarker;
   }
+  
+  protected TokenMarker createTokenMarker() {
+    return new PdeKeywords();
+  }
 
 
 //  abstract public Formatter createFormatter();

app/src/processing/app/syntax/TokenMarker.java

@@ -25,6 +25,8 @@ import javax.swing.text.Segment;
  */
 public abstract class TokenMarker
 {
+    abstract public void addColoring(String keyword, String coloring);
+
         /**
          * A wrapper for the lower-level <code>markTokensImpl</code> method
          * that is called to split a line up into tokens.