//============================================================================
// NDate::Compare : Compare the value.
//----------------------------------------------------------------------------
NComparison NDate::Compare(const NDate &theValue) const
{
// Compare the value
return(GetComparison(mTime, theValue.mTime));
}
//============================================================================
// NComparable::CompareData : Compare two blocks of data.
//----------------------------------------------------------------------------
template<typename T> NComparison NComparable<T>::CompareData(NIndex theSize1, const void *thePtr1,
NIndex theSize2, const void *thePtr2) const
{ NComparison theResult;
// Compare the data
//
// Since differently-sized bits of data can't be ordered, we compare
// by size first and only examine content if we have equal sizes.
if (theSize1 != theSize2)
theResult = GetComparison(theSize1, theSize2);
else
{
if (thePtr1 == thePtr2)
theResult = kNCompareEqualTo;
else
theResult = GetComparison(memcmp(thePtr1, thePtr2, (size_t) theSize1));
}
return(theResult);
}
const Comparison& ComparisonFactory::ReconstructFromProto(const serialization::Comparison &proto) {
DCHECK(ProtoIsValid(proto))
<< "Attempted to create Comparison from an invalid proto description:\n"
<< proto.DebugString();
switch (proto.comparison_id()) {
case serialization::Comparison::EQUAL:
return GetComparison(ComparisonID::kEqual);
case serialization::Comparison::NOT_EQUAL:
return GetComparison(ComparisonID::kNotEqual);
case serialization::Comparison::LESS:
return GetComparison(ComparisonID::kLess);
case serialization::Comparison::LESS_OR_EQUAL:
return GetComparison(ComparisonID::kLessOrEqual);
case serialization::Comparison::GREATER:
return GetComparison(ComparisonID::kGreater);
case serialization::Comparison::GREATER_OR_EQUAL:
return GetComparison(ComparisonID::kGreaterOrEqual);
default:
FATAL_ERROR("Unrecognized ComparisonID in ComparisonFactory::ReconstructFromProto");
}
}
//============================================================================
// NNumber::Compare : Compare the value.
//----------------------------------------------------------------------------
NComparison NNumber::Compare(const NNumber &theValue) const
{ Float64 valueFloat64_1, valueFloat64_2;
Float32 valueFloat32_1, valueFloat32_2;
SInt64 valueInt64_1, valueInt64_2;
NComparison theResult;
// Compare equal types
if (mPrecision == theValue.mPrecision || (IsInteger() && theValue.IsInteger()))
{
switch (mPrecision) {
case kNPrecisionInt8:
case kNPrecisionInt16:
case kNPrecisionInt32:
case kNPrecisionInt64:
theResult = GetComparison(mValue.integer, theValue.mValue.integer);
break;
case kNPrecisionFloat32:
valueFloat32_1 = (Float32) mValue.real;
valueFloat32_2 = (Float32) theValue.mValue.real;
theResult = GetComparison(valueFloat32_1, valueFloat32_2);
break;
case kNPrecisionFloat64:
theResult = GetComparison(mValue.real, theValue.mValue.real);
break;
default:
NN_LOG("Unknown precision: %d", mPrecision);
theResult = kNCompareLessThan;
break;
}
}
// Compare dis-similar types
else
{
switch (mPrecision) {
case kNPrecisionInt8:
case kNPrecisionInt16:
case kNPrecisionInt32:
case kNPrecisionInt64:
valueInt64_1 = GetSInt64();
valueInt64_2 = theValue.GetSInt64();
theResult = GetComparison(valueInt64_1, valueInt64_2);
break;
case kNPrecisionFloat32:
valueFloat32_1 = GetFloat32();
valueFloat32_2 = theValue.GetFloat32();
theResult = GetComparison(valueFloat32_1, valueFloat32_2);
break;
case kNPrecisionFloat64:
valueFloat64_1 = GetFloat64();
valueFloat64_2 = theValue.GetFloat64();
theResult = GetComparison(valueFloat64_1, valueFloat64_2);
break;
default:
NN_LOG("Unknown precision: %d", mPrecision);
theResult = kNCompareLessThan;
break;
}
}
return(theResult);
}
// Compare the value
NComparison Compare(const TEncodable &theValue) const
{
return(GetComparison(this, &theValue));
}
//============================================================================
// 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);
}
