removed some wron backwards action behavior

src/animation/PseudoCodeProcessor.java

@@ -53,10 +53,11 @@ public class PseudoCodeProcessor {
         ControlFlow cf = null;
         if( mem.isDefined( "_call" + programPointer.getId(), MemoryType.LOCAL ) )
         {
-            mem.undeclare( "_call" + programPointer.getId(), MemoryType.LOCAL );
+            String name = "_call" + programPointer.getId();
+            mem.undeclare( name, MemoryType.LOCAL );
             cf = programPointer.emptyForwardStep( mem );
             cf.setBackwardAction( (Memory m) -> {
-                mem.declare( "_call" + programPointer.getId(), true, MemoryType.LOCAL );
+                mem.declare( name, true, MemoryType.LOCAL );
             });
         }
         else
@@ -68,11 +69,12 @@ public class PseudoCodeProcessor {
         case ControlFlow.STEP_INTO:
             if( mem.isDefined( "_returnTo" + programPointer.getId(), MemoryType.GLOBAL ) )
             {
-                mem.declare( "_returnTo" + programPointer.getId(), mem.read( "_returnTo" + programPointer.getId(), MemoryType.GLOBAL ), MemoryType.LOCAL );
-                mem.undeclare( "_returnTo" + programPointer.getId(), MemoryType.GLOBAL );
+                String name = "_returnTo" + programPointer.getId();
+                mem.declare( name, mem.read( name, MemoryType.GLOBAL ), MemoryType.LOCAL );
+                mem.undeclare( name, MemoryType.GLOBAL );
                 cf.setBackwardAction( (Memory m) -> {
-                    mem.declare( "_returnTo" + programPointer.getId(), mem.read( "_returnTo" + programPointer.getId(), MemoryType.LOCAL ), MemoryType.GLOBAL );
-                    mem.undeclare( "_returnTo" + programPointer.getId(), MemoryType.LOCAL );
+                    mem.declare( name, mem.read( name, MemoryType.LOCAL ), MemoryType.GLOBAL );
+                    mem.undeclare( name, MemoryType.LOCAL );
                 });
             }
             if( programPointer.getChildCount() == 0 )
@@ -84,10 +86,11 @@ public class PseudoCodeProcessor {
                 return CodeStatus.FINISHED;
             if( before.isDefined( "_returnTo" + programPointer.getId() ) )
             {
-                PseudoCodeNode nextPC = before.<PseudoCodeNode>get( "_returnTo" + programPointer.getId() );
-                before.undeclare( "_returnTo" + programPointer.getId() );
+                String name = "_returnTo" + programPointer.getId();
+                PseudoCodeNode nextPC = before.<PseudoCodeNode>get( name );
+                before.undeclare( name );
                 cf.setBackwardAction( (Memory m) -> {
-                    before.declare( "_returnTo" + programPointer.getId(), nextPC );
+                    before.declare( name, nextPC );
                 });
                 return selectNextNode( nextPC, programPointer );
             }
@@ -98,11 +101,12 @@ public class PseudoCodeProcessor {
                 return selectNextNode( nextPC, programPointer );
         case ControlFlow.CALL:
             PseudoCodeNode f = cf.getFunction();
-            mem.declare( "_call" + programPointer.getId(), true, MemoryType.LOCAL );
+            String name = "_call" + programPointer.getId();
+            mem.declare( name, true, MemoryType.LOCAL );
             mem.declare( "_returnTo" + f.getId(), cf.getJumpBack(), MemoryType.GLOBAL );
             cf.setBackwardAction( (Memory m) -> {
                 m.undeclare( "_returnTo" + f.getId(), MemoryType.GLOBAL );
-                m.undeclare( "_call" + programPointer.getId(), MemoryType.LOCAL );
+                m.undeclare( name, MemoryType.LOCAL );
             });
             return selectNextNode( f, programPointer );
         }