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/*
* Copyright (c) Contributors, http://www.openmetaverse.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
using System;
using System.Collections.Generic;
using System.Text;
using OpenSim.Region.Scripting.EmbeddedJVM.Types;
using OpenSim.Region.Scripting.EmbeddedJVM.Types.PrimitiveTypes;
namespace OpenSim.Region.Scripting.EmbeddedJVM
{
partial class Thread
{
private partial class Interpreter
{
private Thread m_thread;
public Interpreter(Thread parentThread)
{
m_thread = parentThread;
}
public bool Excute()
{
bool run = true;
byte currentOpCode = GlobalMemory.MethodArea.MethodBuffer[this.m_thread.PC++];
// Console.WriteLine("opCode is: " + currentOpCode);
bool handled = false;
handled = this.IsLogicOpCode(currentOpCode);
if (!handled)
{
handled = this.IsMethodOpCode(currentOpCode);
}
if (!handled)
{
if (currentOpCode == 172)
{
if (this.m_thread.stack.StackFrames.Count > 1)
{
Console.WriteLine("returning int from function");
int retPC1 = this.m_thread.m_currentFrame.ReturnPC;
BaseType bas1 = this.m_thread.m_currentFrame.OpStack.Pop();
this.m_thread.stack.StackFrames.Pop();
this.m_thread.m_currentFrame = this.m_thread.stack.StackFrames.Peek();
this.m_thread.PC = retPC1;
if (bas1 is Int)
{
this.m_thread.m_currentFrame.OpStack.Push((Int)bas1);
}
}
else
{
// Console.WriteLine("No parent function so ending program");
this.m_thread.stack.StackFrames.Pop();
run = false;
}
handled = true;
}
if (currentOpCode == 174)
{
if (this.m_thread.stack.StackFrames.Count > 1)
{
Console.WriteLine("returning float from function");
int retPC1 = this.m_thread.m_currentFrame.ReturnPC;
BaseType bas1 = this.m_thread.m_currentFrame.OpStack.Pop();
this.m_thread.stack.StackFrames.Pop();
this.m_thread.m_currentFrame = this.m_thread.stack.StackFrames.Peek();
this.m_thread.PC = retPC1;
if (bas1 is Float)
{
this.m_thread.m_currentFrame.OpStack.Push((Float)bas1);
}
}
else
{
// Console.WriteLine("No parent function so ending program");
this.m_thread.stack.StackFrames.Pop();
run = false;
}
handled = true;
}
if (currentOpCode == 177)
{
if (this.m_thread.stack.StackFrames.Count > 1)
{
Console.WriteLine("returning from function");
int retPC = this.m_thread.m_currentFrame.ReturnPC;
this.m_thread.stack.StackFrames.Pop();
this.m_thread.m_currentFrame = this.m_thread.stack.StackFrames.Peek();
this.m_thread.PC = retPC;
}
else
{
// Console.WriteLine("No parent function so ending program");
this.m_thread.stack.StackFrames.Pop();
run = false;
}
handled = true;
}
}
if (!handled)
{
Console.WriteLine("opcode " + currentOpCode + " not been handled ");
}
return run;
}
}
}
}
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