public override void Execute(AbstractMachineState state)
{
AMProgram prog = (AMProgram)state.Program;
AbstractTerm X0 = ((AbstractTerm)state["X0"]).Dereference();
AbstractTerm X1 = ((AbstractTerm)state["X1"]).Dereference();
if (!X0.IsConstant)
{
Console.WriteLine("Invalid class type of object/2");
state.Backtrack();
}
if (X1.IsConstant)
{
Console.WriteLine("object/2: object instantiation error.");
state.Backtrack();
}
if (CreateObject(X0.Data() as string, X1, state))
{
prog.Next();
}
else
{
state.Backtrack();
}
}
public void Backtrack()
{
AbstractMachineState state = new AbstractMachineState(new AMFactory());
AMProgram program = (AMProgram)state.Program;
state.Backtrack();
Assert.IsNotNull(program.P);
ProgramClause nextClause = new ProgramClause();
state.B = new Choicepoint(2, null, null, null, nextClause, 3, null);
state.Backtrack();
Assert.AreSame(program.P, nextClause);
}
public override void Execute(AbstractMachineState state)
{
AMProgram prog = (AMProgram)state.Program;
runtime = state;
// invoke(+ClassObj,+meth(+x..),-Return).
AbstractTerm X0 = (state["X0"] as AbstractTerm).Dereference();
AbstractTerm X1 = (state["X1"] as AbstractTerm).Dereference();
AbstractTerm X2 = (state["X2"] as AbstractTerm).Dereference();
if (Getproperty(X0, X1, X2))
{
prog.Next();
}
else
{
state.Backtrack();
}
}