//============================================================================
// NPreferences::GetValue : Get a value.
//----------------------------------------------------------------------------
NVariant NPreferences::GetValue(const NString &theKey) const
{ NVariant theValue;
// Validate our parameters
NN_ASSERT(!theKey.IsEmpty());
// Get the value
theValue = NTargetPreferences::GetValue(theKey);
if (!theValue.IsValid())
theValue = NPropertyStore::GetValue(theKey);
return(theValue);
}
bool NNumber::EncodableCanEncode(const NVariant &theValue)
{ const NNumber *theObject;
if (theValue.IsNumeric())
return(true);
theObject = theValue.GetValue<NNumber>();
return(theObject != NULL);
}
//============================================================================
// NNumber::NNumber : Constructor.
//----------------------------------------------------------------------------
NNumber::NNumber(const NVariant &theValue)
{
// Initialise ourselves
SetUInt8(0);
if (theValue.IsNumeric())
SetValue(theValue);
}
void NNumber::EncodableEncodeObject(NEncoder &theEncoder, const NVariant &theValue)
{ const NNumber *theObject;
const NVariant *srcValue;
NNumber tmpNumber;
NVariant tmpValue;
if (theValue.IsNumeric())
{
tmpNumber = NNumber(theValue);
tmpValue = NVariant(tmpNumber);
srcValue = &tmpValue;
}
else
srcValue = &theValue;
theObject = srcValue->GetValue<NNumber>();
theObject->EncodeSelf(theEncoder);
}
//============================================================================
// NNumber::SetValue : Set the value.
//----------------------------------------------------------------------------
bool NNumber::SetValue(const NVariant &theValue)
{ UInt8 valueUInt8;
UInt16 valueUInt16;
UInt32 valueUInt32;
UInt64 valueUInt64;
SInt8 valueSInt8;
SInt16 valueSInt16;
SInt32 valueSInt32;
SInt64 valueSInt64;
Float32 valueFloat32;
Float64 valueFloat64;
int valueInt;
long valueLong;
NString valueString;
// Set the value
//
// NVariant treats some unsized types as numeric, to support literal constants.
if (theValue.GetValue(*this))
; // Assigned to this
else if (theValue.GetValue(valueUInt8))
SetUInt8(valueUInt8);
else if (theValue.GetValue(valueUInt16))
SetUInt16(valueUInt16);
else if (theValue.GetValue(valueUInt32))
SetUInt32(valueUInt32);
else if (theValue.GetValue(valueUInt64))
SetUInt64(valueUInt64);
else if (theValue.GetValue(valueSInt8))
SetSInt8(valueSInt8);
else if (theValue.GetValue(valueSInt16))
SetSInt16(valueSInt16);
else if (theValue.GetValue(valueSInt32))
SetSInt32(valueSInt32);
else if (theValue.GetValue(valueSInt64))
SetSInt64(valueSInt64);
else if (theValue.GetValue(valueFloat32))
SetFloat32(valueFloat32);
else if (theValue.GetValue(valueFloat64))
SetFloat64(valueFloat64);
else if (theValue.GetValue(valueInt))
SetSInt64(valueInt);
else if (theValue.GetValue(valueLong))
SetSInt64(valueLong);
else if (theValue.GetValue(valueString))
return(SetValue(valueString));
else
return(false);
return(true);
}
//============================================================================
// NVariant::CompareValues : Compare two values.
//----------------------------------------------------------------------------
NComparison NVariant::CompareValues(const NVariant &value1, const NVariant &value2)
{ NComparison theResult;
// Check the values
//
// Testing by address gives us a fast test for equality, and a default
// order for undefined cases (e.g., comparing different types).
theResult = GetComparison(value1.mData, value2.mData);
if (theResult == kNCompareEqualTo)
return(theResult);
// Check for NULL values
//
// NULL values can't be compared.
if (!value1.IsValid() || !value2.IsValid())
NN_LOG("Attempted to compare a NULL value");
// Check for mismatched types
//
// Different types can't be compared, except for numeric values which we can
// push through an NNumber to obtain a comparison.
else if (value1.GetType() != value2.GetType())
{
if (value1.IsNumeric() && value2.IsNumeric())
theResult = NNumber(value1).Compare(NNumber(value2));
else
NN_LOG("Attempted to compare different types (%s) (%s)", value1.GetType().name(), value2.GetType().name());
}
// Compare the values
//
// NVariant provides default comparisons for standard comparable objects.
//
// This list can be extended in the future to support new types. Unfortunately we can't
// automatically determine if a type is a sub-class of NComparable, since our type may
// also be a built-in type like 'long' rather than an object.
else
{
if (value1.IsNumeric())
theResult = NNumber(value1).Compare(NNumber(value2));
else if (value1.IsType(typeid(NBitVector)))
theResult = CompareValuesT<NBitVector>(value1, value2);
else if (value1.IsType(typeid(NColor)))
theResult = CompareValuesT<NColor>(value1, value2);
else if (value1.IsType(typeid(NData)))
theResult = CompareValuesT<NData>(value1, value2);
else if (value1.IsType(typeid(NDate)))
theResult = CompareValuesT<NDate>(value1, value2);
else if (value1.IsType(typeid(NDictionary)))
theResult = CompareValuesT<NDictionary>(value1, value2);
else if (value1.IsType(typeid(NFile)))
theResult = CompareValuesT<NFile>(value1, value2);
else if (value1.IsType(typeid(NPoint)))
theResult = CompareValuesT<NPoint>(value1, value2);
else if (value1.IsType(typeid(NRange)))
theResult = CompareValuesT<NRange>(value1, value2);
else if (value1.IsType(typeid(NRectangle)))
theResult = CompareValuesT<NRectangle>(value1, value2);
else if (value1.IsType(typeid(NSize)))
theResult = CompareValuesT<NSize>(value1, value2);
else if (value1.IsType(typeid(NString)))
theResult = CompareValuesT<NString>(value1, value2);
else if (value1.IsType(typeid(NVector)))
theResult = CompareValuesT<NVector>(value1, value2);
else
NN_LOG("NVariant::CompareValues passed an unknown type (%s)", value1.GetType().name());
}
return(theResult);
}