added debugging support and integrated with Eclipse debugger

src/main/java/lua/debug/DebugResponseStack.java

@@ -0,0 +1,48 @@
+/*******************************************************************************
+* Copyright (c) 2007 LuaJ. All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+******************************************************************************/
+package lua.debug;
+
+public class DebugResponseStack extends DebugResponseSimple {
+    private static final long serialVersionUID = -2108425321162834731L;
+    protected Variable[] variables;
+    
+    public DebugResponseStack(Variable[] variables) {
+        super(true);
+        this.variables = variables;
+    }
+    
+    public Variable[] getVariables() {
+        return this.variables;
+    }
+
+    /* (non-Javadoc)
+     * @see java.lang.Object#toString()
+     */
+    @Override
+    public String toString() {
+        StringBuilder buffer = new StringBuilder();
+        for (int i = 0; variables != null && i < variables.length; i++) {
+            buffer.append("\t" + variables[i].getName() + ":" + variables[i].getIndex() + "\n");
+        }
+        return buffer.toString();
+    }
+}