public void Execute(Machine machine, Stack<object> stack, Scope scope, Instruction instr)
{
int length;
string name;
switch (instr)
{
default:
throw new VMException("Something just went horribly wrong. Variable instructlet is not supposed to receive {0}", instr.ToString());
case Instruction.SetVar:
length = (int)machine.TakeByte();
name = machine.TakeBytes(length).AsString();
machine.ExecuteNextInstructlet();
scope.SetVariable(name, stack.Pop());
break;
case Instruction.GetVar:
length = (int)machine.TakeByte();
name = machine.TakeBytes((int)length).AsString();
stack.Push(scope.GetVariable(name));
break;
}
}
public void Execute(Machine machine, Stack<object> stack, Scope scope, Instruction instr)
{
Instruction type = (Instruction)machine.TakeByte();
switch (type)
{
default:
throw new VMException("Unhandled literal type: {0}", type.ToString());
case Instruction.TypeNumeral:
byte[] numBytes = machine.TakeBytes(8);
stack.Push(numBytes.AsDouble());
break;
case Instruction.TypeString:
double length = machine.TakeBytes(8).AsDouble();
string text = machine.TakeBytes((int)length * sizeof(char)).AsString();
stack.Push(text);
break;
case Instruction.TypeBoolean:
stack.Push(Convert.ToBoolean(machine.TakeByte()));
break;
}
}
public void Execute(Machine machine, Stack<object> stack, Scope scope, Instruction instr)
{
List<byte> funcBytecode = new List<byte>();
int nameLength = (int)machine.TakeByte();
string name = machine.TakeBytes(nameLength * sizeof(char)).AsString();
double funcLength = machine.TakeBytes(8).AsDouble();
funcBytecode.AddRange(machine.TakeBytes((int)funcLength));
scope.SetFunction(name, new Function(name, funcBytecode.ToArray()));
}
public void Execute(Machine machine, Stack<object> stack, Scope scope, Instruction instr)
{
int length = (int)machine.TakeByte();
string name = machine.TakeBytes(length * sizeof(char)).AsString();
scope.GetFunction(name).Call(machine);
}