public static Expression GetDerivedTypeMapping(
IObjectMappingData declaredTypeMappingData,
Expression sourceValue,
Type targetType)
{
var declaredTypeMapperData = declaredTypeMappingData.MapperData;
var targetValue = declaredTypeMapperData.TargetMember.IsReadable
? declaredTypeMapperData.TargetObject.GetConversionTo(targetType)
: Expression.Default(targetType);
var derivedTypeMappingData = declaredTypeMappingData.WithTypes(sourceValue.Type, targetType);
if (declaredTypeMappingData.IsRoot)
{
return(GetDerivedTypeRootMapping(derivedTypeMappingData, sourceValue, targetValue));
}
if (declaredTypeMapperData.TargetMemberIsEnumerableElement())
{
return(GetInlineElementMappingBlock(derivedTypeMappingData, sourceValue, targetValue));
}
return(GetDerivedTypeChildMapping(derivedTypeMappingData, sourceValue, targetValue));
}
public static Expression GetDerivedTypeMapping(
IObjectMappingData declaredTypeMappingData,
Expression sourceValue,
Type targetType,
out IObjectMappingData derivedTypeMappingData)
{
derivedTypeMappingData = declaredTypeMappingData.WithTypes(sourceValue.Type, targetType);
var declaredTypeMapperData = declaredTypeMappingData.MapperData;
if (DerivedSourceTypeIsUnconditionallyIgnored(derivedTypeMappingData))
{
return(declaredTypeMapperData.TargetObject.GetConversionTo(targetType));
}
var targetValue = declaredTypeMapperData.TargetMember.IsReadable
? declaredTypeMapperData.TargetObject.GetConversionTo(targetType)
: targetType.ToDefaultExpression();
if (declaredTypeMappingData.IsRoot)
{
return(GetDerivedTypeRootMapping(derivedTypeMappingData, sourceValue, targetValue));
}
if (declaredTypeMapperData.TargetMemberIsEnumerableElement())
{
return(MappingFactory.GetElementMapping(derivedTypeMappingData, sourceValue, targetValue));
}
return(GetDerivedTypeChildMapping(derivedTypeMappingData, sourceValue, targetValue));
}
private static Expression GetDerivedTypeSourceValue(
DerivedTypePair derivedTypePair,
IObjectMappingData declaredTypeMappingData,
out Expression sourceValueCondition)
{
if (!derivedTypePair.IsImplementationPairing)
{
sourceValueCondition = null;
return(declaredTypeMappingData.MapperData.SourceObject);
}
var implementationMappingData = declaredTypeMappingData
.WithTypes(derivedTypePair.DerivedSourceType, derivedTypePair.DerivedTargetType);
if (implementationMappingData.IsTargetConstructable())
{
sourceValueCondition = null;
return(declaredTypeMappingData.MapperData.SourceObject);
}
// Derived Type is an implementation Type for an unconstructable target Type,
// and is itself unconstructable; only way we get here is if a ToTarget data
// source has been configured:
var toTargetDataSource = implementationMappingData
.GetToTargetDataSourceOrNullForTargetType();
sourceValueCondition = toTargetDataSource.IsConditional
? toTargetDataSource.Condition.Replace(
implementationMappingData.MapperData.SourceObject,
declaredTypeMappingData.MapperData.SourceObject,
ExpressionEvaluation.Equivalator)
: null;
return(toTargetDataSource.Value.Replace(
implementationMappingData.MapperData.SourceObject,
declaredTypeMappingData.MapperData.SourceObject,
ExpressionEvaluation.Equivalator));
}