CodeEmitter

- Added a new parameter to `transform(Instruction)` (now `transform(Instruction, Object)`. `customRules` is an `Object` to be interpreted by the underlying emitter which can change how certain transformations are done when it is in a certain state

DGen

- Uses new `CodeEmitter` API

source/tlang/compiler/codegen/emit/core.d

@@ -165,7 +165,11 @@ public abstract class CodeEmitter
      *
      * Params:
      *   instruction = The Instruction to transform/emit
+     *   customRules = an `Object` to be interpreted by
+     * the underlying emitter which can change how certain
+     * transformations are done when it is in a certain state
+     *
      * Returns: The Instruction emit as a string
      */
-    public abstract string transform(Instruction instruction);
+    public abstract string transform(Instruction instruction, Object customRules = null);
 }

source/tlang/compiler/codegen/emit/dgen.d

@@ -110,7 +110,7 @@ public final class DCodeEmitter : CodeEmitter
     }
 
 
-    public override string transform(const Instruction instruction)
+    public override string transform(const Instruction instruction, Object customRules = null)
     {
         writeln("\n");
         gprintln("transform(): "~to!(string)(instruction));