private ScriptValue IntegerIndexedElementGet(double index)
{
//https://tc39.github.io/ecma262/#sec-integerindexedelementget
var buffer = ViewedArrayBuffer;
if (ArrayBufferIntrinsics.IsDetachedBuffer(buffer))
{
throw Agent.CreateTypeError();
}
if (!Agent.IsInteger(index))
{
return(ScriptValue.Undefined);
}
if (index == 0 && index.IsNegative())
{
return(ScriptValue.Undefined);
}
var length = ArrayLength;
if (index < 0 || index >= length)
{
return(ScriptValue.Undefined);
}
var indexedPosition = (long)index * Description.Size + ByteOffset;
return(ArrayBufferIntrinsics.GetValueFromBuffer(Agent, buffer, indexedPosition, Description, true, OrderType.Unordered, Agent.LittleEndian));
}
private bool IntegerIndexedElementSet(double index, ScriptValue value)
{
//https://tc39.github.io/ecma262/#sec-integerindexedelementset
var numberValue = Agent.ToNumber(value);
var buffer = ViewedArrayBuffer;
if (ArrayBufferIntrinsics.IsDetachedBuffer(buffer))
{
throw Agent.CreateTypeError();
}
if (!Agent.IsInteger(index))
{
return(false);
}
if (index == 0 && index.IsNegative())
{
return(false);
}
var length = ArrayLength;
if (index < 0 || index >= length)
{
return(false);
}
var indexedPosition = (long)index * Description.Size + ByteOffset;
ArrayBufferIntrinsics.SetValueInBuffer(Agent, buffer, indexedPosition, Description, numberValue, true, OrderType.Unordered, Agent.LittleEndian);
return(true);
}
/// <inheritdoc />
public override bool HasProperty(ScriptValue property)
{
//https://tc39.github.io/ecma262/#sec-integer-indexed-exotic-objects-hasproperty-p
Debug.Assert(Agent.IsPropertyKey(property));
if (property.IsString)
{
var numericIndex = Agent.CanonicalNumericIndexString((string)property);
if (numericIndex.HasValue)
{
var buffer = ViewedArrayBuffer;
if (ArrayBufferIntrinsics.IsDetachedBuffer(buffer))
{
throw Agent.CreateTypeError();
}
if (!Agent.IsInteger(numericIndex.Value))
{
return(false);
}
if (numericIndex.Value.IsNegative())
{
return(false);
}
if (numericIndex.Value >= ArrayLength)
{
return(false);
}
return(true);
}
}
return(base.HasProperty(property));
}
