public static Expression UseTargetInstance(IMemberMapperData mapperData, Expression contextAccess, Type targetType)
{
if (!contextAccess.Type.IsGenericType())
{
return(UseTargetMember(mapperData, contextAccess, targetType));
}
var targetInstanceAccess = mapperData
.GetAppropriateMappingContext(contextAccess.Type.GetGenericTypeArguments())
.TargetInstance;
return(ConvertTargetType(targetType, targetInstanceAccess)
? targetInstanceAccess.GetConversionTo(targetType)
: targetInstanceAccess);
}
public static Expression UseInstanceVariable(IMemberMapperData mapperData, Expression contextAccess, Type targetType)
{
if (!contextAccess.Type.IsGenericType())
{
return(UseTargetMember(mapperData, contextAccess, targetType));
}
var instanceVariableAccess = mapperData
.GetAppropriateMappingContext(contextAccess.Type.GetGenericArguments())
.InstanceVariable;
return(targetType.IsAssignableFrom(instanceVariableAccess.Type)
? instanceVariableAccess
: instanceVariableAccess.GetConversionTo(targetType));
}
private Expression GetTypeCheckConditionOrNull(IMemberMapperData mapperData)
{
var sourceType = (SourceType == _allSourceTypes) ? typeof(object) : SourceType;
var contextTypes = new[] { sourceType, TargetType };
var context = mapperData.GetAppropriateMappingContext(contextTypes);
if (!TargetType.IsDerivedFrom(context.TargetType))
{
return(null);
}
var contextAccess = mapperData.GetAppropriateMappingContextAccess(contextTypes);
if (contextAccess == mapperData.MappingDataObject)
{
return(null);
}
var targetAccess = mapperData.GetTargetAccess(contextAccess, TargetType);
var targetAccessNotNull = targetAccess.GetIsNotDefaultComparison();
return(targetAccessNotNull);
}