first step to bring debugging code to j2me

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

@@ -21,13 +21,19 @@
 ******************************************************************************/
 package lua.debug;
 
-public class DebugResponseStack extends DebugResponseSimple {
-    private static final long serialVersionUID = -2108425321162834731L;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public class DebugResponseStack implements DebugResponse {
     protected Variable[] variables;
     
     public DebugResponseStack(Variable[] variables) {
-        super(true);
-        this.variables = variables;
+    	if (variables == null) {
+    		this.variables = new Variable[0];
+    	} else {
+            this.variables = variables;    		
+    	}
     }
     
     public Variable[] getVariables() {
@@ -44,4 +50,22 @@ public class DebugResponseStack extends DebugResponseSimple {
         }
         return buffer.toString();
     }
+    
+	public static void serialize(DataOutputStream out, DebugResponseStack response) 
+    throws IOException {
+		Variable[] variables = response.getVariables();
+		out.writeInt(variables == null ? 0 : variables.length);
+		for (int i = 0; i < variables.length; i++) {
+			SerializationHelper.serialize(variables[i], out);
+		}
+	}
+	
+    public static DebugResponseStack deserialize(DataInputStream in) throws IOException {
+		int count = in.readInt();
+		Variable[] variables = new Variable[count];
+		for (int i = 0; i < count; i++) {
+			variables[i] = (Variable) SerializationHelper.deserialize(in);
+		}
+		return new DebugResponseStack(variables);
+	}
 }