private void ExecuteInstruction(Instruction ins)
{
switch (ins.OperationCode)
{
case OperationCode.Pop:
Stack.Pop();
break;
case OperationCode.LoadTrue:
Stack.Push(GSharpBool.True);
break;
case OperationCode.LoadFalse:
Stack.Push(GSharpBool.False);
break;
case OperationCode.StoreLocal:
Stack.StoreLocal(ins.Argument, Stack.Pop());
break;
case OperationCode.LoadLocal:
Stack.Push(Stack.LoadLocal(ins.Argument));
break;
case OperationCode.StoreGlobal:
{
string name = ((GSharpName)Stack.CurrentModule.ConstantPool[ins.Argument]).Value;
if (Stack.CurrentModule.HasAttribute(name))
{
Stack.CurrentModule.SetAttribute(name, Stack.Pop());
}
else
{
globalDictionary[name] = Stack.Pop();
}
break;
}
case OperationCode.LoadGlobal:
{
string name = ((GSharpName)Stack.CurrentModule.ConstantPool[ins.Argument]).Value;
if (globalDictionary.ContainsKey(name))
{
Stack.Push(globalDictionary[name]);
}
else
{
Stack.Push(Stack.CurrentModule.GetAttribute(name));
}
break;
}
case OperationCode.StoreAttribute:
{
GSharpObject target = Stack.Pop();
GSharpObject value = Stack.Pop();
string attribute = ((GSharpName)Stack.CurrentModule.ConstantPool[ins.Argument]).Value;
target.SetAttribute(attribute, value);
break;
}
case OperationCode.LoadAttribute:
{
GSharpObject target = Stack.Pop();
string attribute = ((GSharpName)Stack.CurrentModule.ConstantPool[ins.Argument]).Value;
if (target.HasAttribute(attribute))
{
Stack.Push(target.GetAttribute(attribute));
}
else
{
throw new System.Exception("Could not find attribute " + attribute + ".");
}
break;
}
case OperationCode.LoadConst:
Stack.Push(Stack.CurrentModule.ConstantPool[ins.Argument]);
break;
case OperationCode.LoadNull:
Stack.Push(null);
break;
case OperationCode.LoadIndex:
{
GSharpObject index = Stack.Pop();
GSharpObject target = Stack.Pop();
Stack.Push(target.GetIndex(this, index));
break;
}
case OperationCode.StoreIndex:
{
GSharpObject index = Stack.Pop();
GSharpObject target = Stack.Pop();
GSharpObject value = Stack.Pop();
target.SetIndex(this, index, value);
break;
}
case OperationCode.LoadThis:
Stack.Push(Stack.Self);
break;
case OperationCode.BinaryOperation:
Stack.Push(Stack.Pop().PerformBinaryOperation(this, (BinaryOperation)ins.Argument, Stack.Pop()));
break;
case OperationCode.InstanceOf:
{
GSharpObject o1 = Stack.Pop();
GSharpObject o2 = Stack.Pop();
Stack.Push(new GSharpBool(o1.Type == o2.Type));
break;
}
case OperationCode.Invoke:
{
GSharpObject target = Stack.Pop();
GSharpObject[] arguments = new GSharpObject[ins.Argument];
for (int i = 1; i <= ins.Argument; i++)
{
arguments[ins.Argument - i] = Stack.Pop();
}
Stack.Push(target.Invoke(this, arguments));
break;
}
case OperationCode.Return:
Stack.InstructionPointer = int.MaxValue;
break;
case OperationCode.JumpIfTrue:
if (Stack.Pop().IsTrue())
{
Stack.InstructionPointer = ins.Argument;
}
break;
case OperationCode.JumpIfFalse:
if (!Stack.Pop().IsTrue())
{
Stack.InstructionPointer = ins.Argument;
}
break;
case OperationCode.Jump:
Stack.InstructionPointer = ins.Argument;
break;
}
}
