/// <summary>
/// First param is compared all others. If *any* are equal, the function returns true.
/// </summary>
private bool ListEquals(double[] list)
{
var type = NanTags.TypeOf(list[0]);
switch (type)
{
// Non-comparable types
case DataType.Invalid:
case DataType.NoValue:
case DataType.Opcode:
return(false);
// Numeric types
case DataType.Number:
case DataType.ValInt32:
case DataType.ValUInt32:
{
var target = _memory.CastDouble(list[0]);
for (int i = 1; i < list.Length; i++)
{
if (Math.Abs(target - _memory.CastDouble(list[i])) <= ComparisonPrecision)
{
return(true);
}
}
return(false);
}
// String types
case DataType.ValSmallString:
case DataType.PtrStaticString:
case DataType.PtrString:
{
var target = _memory.CastString(list[0]);
for (int i = 1; i < list.Length; i++)
{
if (target == _memory.CastString(list[i]))
{
return(true);
}
}
return(false);
}
// Pointer equality
case DataType.VariableRef:
case DataType.PtrHashtable:
case DataType.PtrGrid:
case DataType.PtrSet:
case DataType.PtrVector:
{
var target = NanTags.DecodeRaw(list[0]);
for (int i = 1; i < list.Length; i++)
{
if (target == NanTags.DecodeRaw(list[i]))
{
return(true);
}
}
return(false);
}
default:
throw new ArgumentOutOfRangeException();
}
}