/// <summary>
/// 对指定索引处的两个值进行比较，返回结果
/// </summary>
public bool Compare(int idx1, int idx2, ECompOp op)
{
if (!_stack.IsValid(idx1) || !_stack.IsValid(idx2))
{
return(false);
}
var a = _stack[idx1];
var b = _stack[idx2];
switch (op)
{
case ECompOp.Eq:
return(Eq(a, b, this));
case ECompOp.Lt:
return(Lt(a, b, this));
case ECompOp.Le:
return(Le(a, b, this));
default:
Debug.Panic("invalid compare op!");
return(false);
}
}
/// <summary>
/// if ((RK(B) op RK(C)) != A)
/// pc++
/// </summary>
private static void Compare(Instruction ins, ILuaVM vm, ECompOp op)
{
ins.ABC(out var a, out var b, out var c);
vm.GetRK(b);
vm.GetRK(c);
if (vm.Compare(-2, -1, op) != (a != 0))
{
vm.AddPC(1);
}
vm.Pop(2);
}
