RuntimeObj BitwiseShift(RuntimeObj val, RuntimeObj shift, bool right)
{
if (val == JSEvalNumber.Zero)
{
return(val);
}
double dR = shift.ToDouble();
int iShift;
if (Double.IsNaN(dR) || (iShift = (dR < 0 ? (int)Math.Ceiling(dR) : (int)Math.Floor(dR)) % 64) == 0)
{
return(Global.CreateNumber(val));
}
if (right && iShift < 0)
{
return(JSEvalNumber.Zero);
}
Int32 lN = JSSupport.ToInt32(val.ToDouble());
if (lN == 0)
{
return(JSEvalNumber.Zero);
}
return(Global.CreateNumber(right ? lN >> iShift : lN << iShift));
}
RuntimeObj BitwiseShift(RuntimeObj val, RuntimeObj shift, bool right)
{
if (val == DoubleObj.Zero)
{
return(val);
}
double dR = shift.ToDouble();
int iShift;
if (double.IsNaN(dR) || (iShift = (dR < 0 ? (int)Math.Ceiling(dR) : (int)Math.Floor(dR)) % 64) == 0)
{
return(val.ToValue() as DoubleObj ?? DoubleObj.Create(val.ToDouble()));
}
if (right && iShift < 0)
{
return(DoubleObj.Zero);
}
int lN = JSSupport.ToInt32(val.ToDouble());
if (lN == 0)
{
return(DoubleObj.Zero);
}
return(DoubleObj.Create(right ? lN >> iShift : lN << iShift));
}
public override PExpr Visit(IAccessorFrame frame)
{
var s = frame.GetState(c =>
c.On("toString").OnCall((f, args) =>
{
int radix = 10;
if (args.Count == 1)
{
radix = JSSupport.ToInt32(args[0].ToDouble());
}
if (radix < 2 || radix > 36)
{
return(f.SetError("Radix must be between 2 and 36."));
}
return(f.SetResult(f.Global.CreateString(JSSupport.ToString(_value, radix))));
}
));
return(s != null?s.Visit() : frame.SetError());
}
public override PExpr Visit(IAccessorFrame frame)
{
var s = frame.GetState(c =>
c.On("charAt").OnCall((f, args) =>
{
int idx = args.Count > 0 ? JSSupport.ToInt32(args[0].ToDouble()) : 0;
if (idx < 0 || idx >= _value.Length)
{
return(f.SetResult(JSEvalString.EmptyString));
}
return(f.SetResult(f.Global.CreateString(new String(_value[idx], 1))));
})
.On("toString").OnCall((f, args) =>
{
return(f.SetResult(this));
}
));
return(s != null?s.Visit() : frame.SetError());
}
public override PExpr Visit(IAccessorFrame frame)
{
var s = frame.GetImplementationState(c =>
c.OnIndex((f, arg) =>
{
int idx = JSSupport.ToInt32(arg.ToDouble());
if (idx < 0 || idx >= _value.Length)
{
return(f.SetResult(EmptyString));
}
return(f.SetResult(Create(new string( _value[idx], 1 ))));
})
.On("ToString").OnCall((f, args) =>
{
return(f.SetResult(this));
}
));
return(s != null?s.Visit() : frame.SetError());
}