public override void Execute(ExecutionEnvironment environment)
{
DemandArgs(2);
int offSet = environment.OpCodes.JumpTable.GetIndex(Arguments[0].Value.StringValue);
int argCount = Arguments[1].Value.IntegerValue;
LexicalScope ls = new LexicalScope(environment.GlobalScope);
ExecutionStack s = new ExecutionStack(ls);
if(argCount > 0)
{
ExecutionStackItem [] tmpItems = new ExecutionStackItem[argCount];
for(int i = 0; i < argCount; i++)
{
tmpItems[i] = environment.LocalStack.PopItem();
}
for(int i = argCount - 1; i >= 0; i--)
{
s.PushItem(tmpItems[i]);
}
}
environment.PushStack(s);
environment.OpCodes.PushCurrentIPAndSet(offSet);
}
public override void Execute(ExecutionEnvironment environment)
{
DemandArgs(2);
string name = Arguments[0].Value.StringValue;
int index = -1;
if(Arguments[1].Value.Type == HVMType.Variable)
{
Variable v = environment.LocalScope.ResolveAny(Arguments[1].Value.StringValue);
if(v == null)
{
throw new OpCodeArgumentException(1, HVMType.Variable, this);
}
VariableItem vi = v as VariableItem;
if(vi == null)
{
throw new OpCodeArgumentException(1, HVMType.Variable, this);
}
index = vi.Value.IntegerValue;
}
else
{
index = Arguments[1].Value.IntegerValue;
}
if(index < 0)
{
throw new OpCodeException("index parameter must be positive", this);
}
Variable vName = environment.LocalScope.ResolveAny(name);
if(vName == null)
{
throw new OpCodeException(string.Format("Variable not found: {0}", name), this);
}
if(vName.Type != HVMType.Array)
{
throw new OpCodeException( string.Format("Attempt to index into non-array element: {0}", name), this);
}
VariableArray va = vName as VariableArray;
if(va == null)
{
throw new OpCodeException( string.Format("Variable was not convertable to VariableArray: {0}", name), this);
}
ExecutionStackItem esi = new ExecutionStackItem(va.GetAtIndex(index));
environment.LocalStack.PushItem(esi);
}
public override void Execute(ExecutionEnvironment environment)
{
environment.LocalStack.DemandSize(1, this);
ExecutionStackItem esi = environment.LocalStack.Peek() as ExecutionStackItem;
if(esi.Value.Value.Type == HVMType.Variable)
{
VariableItem v = environment.LocalScope.ResolveStackItem(esi);
if(v == null)
{
throw new RuntimeException("Unable to resolve stack item as variable");
}
VariableItem v2 = v.Clone() as VariableItem;
environment.LocalStack.PushItem(new ExecutionStackItem(v2));
}
else
{
ExecutionStackItem esi2 = new ExecutionStackItem(esi.Value.Clone() as VariableItem);
environment.LocalStack.PushItem(esi2);
}
}
public void PushItem(ExecutionStackItem item)
{
if(item == null)
{
throw new StackException("Can not push null item onto ExecutionStack");
}
Push(item);
}
public VariableItem ResolveStackItem(ExecutionStackItem item)
{
VariableItem v = null;
if(item.Value.Value.Type == HVMType.Variable)
{
v = ResolveAny(item.Value.Name) as VariableItem;
}
else
{
v = item.Value.Clone() as VariableItem;
}
if(v == null)
{
throw new ParseException( "Defined variable", string.Format("Undefined variable: {0}", item.Value.Name) );
}
return v;
}
