LocalScope.java

// -*- mode: Java; c-basic-offset: 3; tab-width: 8; indent-tabs-mode: nil -*-
// Copyright (C) 2008 Andreas Krey, Ulm, Germany <a.krey@gmx.de>

package gloop;

public class LocalScope extends Scope {

   private int nextOffset = 0;

   public LocalScope (Scope p) {
      super (p);
   }

   abstract public class FrameEnt extends Ent {
      private int offset;

      public FrameEnt (String n) {
         super (n);
         offset = nextOffset ++;
      }

      public int getOffset () { return offset; }
      abstract public boolean isVar ();
   }

   public FrameEnt putDef (final String n) {
      return new FrameEnt (n) {
            public String desc () { return "<def " + n + ">"; }
            public boolean isVar () { return false; }
         };
   }

   public FrameEnt putVar (final String n) {
      return new FrameEnt (n) {
            public String desc () { return "<var " + n + ">"; }
            public boolean isVar () { return true; }
         };
   }
}