protected override Expression VisitMemberInit(MemberInitExpression node)
{
if (this.TypeMappings.TryGetValue(node.Type, out Type newType))
{
var typeMap = ConfigurationProvider.CheckIfMapExists(sourceType: newType, destinationType: node.Type);
//The destination becomes the source because to map a source expression to a destination expression,
//we need the expressions used to create the source from the destination
IEnumerable <MemberBinding> bindings = node.Bindings.Select
(
binding =>
{
Expression bindingExpression = ((MemberAssignment)binding).Expression;
return(DoBind
(
typeMap.GetPropertyMapByDestinationProperty(binding.Member.Name),
bindingExpression,
this.Visit(bindingExpression)
));
}
);
return(Expression.MemberInit(Expression.New(newType), bindings));
}
return(base.VisitMemberInit(node));
}
protected override Expression VisitMemberInit(MemberInitExpression node)
{
if (this.TypeMappings.TryGetValue(node.Type, out Type newType))
{
var typeMap = ConfigurationProvider.CheckIfMapExists(sourceType: newType, destinationType: node.Type);
//The destination becomes the source because to map a source expression to a destination expression,
//we need the expressions used to create the source from the destination
IEnumerable <MemberBinding> bindings = node.Bindings.Aggregate(new List <MemberBinding>(), (list, binding) =>
{
var propertyMap = typeMap.PropertyMaps.SingleOrDefault(item => item.DestinationName == binding.Member.Name);
if (propertyMap == null)
{
return(list);
}
var sourceMember = GetSourceMember(propertyMap);
if (sourceMember == null)
{
return(list);
}
Expression bindingExpression = ((MemberAssignment)binding).Expression;
list.Add
(
DoBind
(
sourceMember,
bindingExpression,
this.Visit(bindingExpression)
)
);
return(list);
});
return(Expression.MemberInit(Expression.New(newType), bindings));
}
return(base.VisitMemberInit(node));
}
protected void FindDestinationFullName(Type typeSource, Type typeDestination, string sourceFullName, List <PropertyMapInfo> propertyMapInfoList)
{
const string period = ".";
if (typeSource == typeDestination)
{
var sourceFullNameArray = sourceFullName.Split(new[] { period[0] }, StringSplitOptions.RemoveEmptyEntries);
sourceFullNameArray.Aggregate(propertyMapInfoList, (list, next) =>
{
if (list.Count == 0)
{
AddPropertyMapInfo(typeSource, next, list);
}
else
{
var last = list[list.Count - 1];
AddPropertyMapInfo(last.CustomExpression == null
? last.DestinationPropertyInfos[last.DestinationPropertyInfos.Count - 1].GetMemberType()
: last.CustomExpression.ReturnType, next, list);
}
return(list);
});
return;
}
if (GenericTypeDefinitionsAreEquivalent(typeSource, typeDestination))
{
if (sourceFullName.IndexOf(period, StringComparison.OrdinalIgnoreCase) < 0)
{
//sourceFullName is a member of the generic type definition so just add the members PropertyMapInfo
AddPropertyMapInfo(typeDestination, sourceFullName, propertyMapInfoList);
var sourceType = typeSource.GetFieldOrProperty(sourceFullName).GetMemberType();
var destType = typeDestination.GetFieldOrProperty(sourceFullName).GetMemberType();
TypeMappings.AddTypeMapping(ConfigurationProvider, sourceType, destType);
return;
}
else
{
//propertyName is a member of the generic type definition so just add the members PropertyMapInfo
var propertyName = sourceFullName.Substring(0, sourceFullName.IndexOf(period, StringComparison.OrdinalIgnoreCase));
AddPropertyMapInfo(typeDestination, propertyName, propertyMapInfoList);
var sourceType = typeSource.GetFieldOrProperty(propertyName).GetMemberType();
var destType = typeDestination.GetFieldOrProperty(propertyName).GetMemberType();
TypeMappings.AddTypeMapping(ConfigurationProvider, sourceType, destType);
var childFullName = sourceFullName.Substring(sourceFullName.IndexOf(period, StringComparison.OrdinalIgnoreCase) + 1);
FindDestinationFullName(sourceType, destType, childFullName, propertyMapInfoList);
return;
}
}
var typeMap = ConfigurationProvider.CheckIfMapExists(sourceType: typeDestination, destinationType: typeSource);//The destination becomes the source because to map a source expression to a destination expression,
//we need the expressions used to create the source from the destination
PathMap pathMap = typeMap.FindPathMapByDestinationPath(destinationFullPath: sourceFullName);
if (pathMap != null)
{
propertyMapInfoList.Add(new PropertyMapInfo(pathMap.CustomMapExpression, new List <MemberInfo>()));
return;
}
if (sourceFullName.IndexOf(period, StringComparison.OrdinalIgnoreCase) < 0)
{
var propertyMap = typeMap.GetPropertyMapByDestinationProperty(sourceFullName);
var sourceMemberInfo = typeSource.GetFieldOrProperty(propertyMap.DestinationMember.Name);
if (propertyMap.ValueResolverConfig != null)
{
throw new InvalidOperationException(Resource.customResolversNotSupported);
}
if (propertyMap.CustomMapExpression == null && !propertyMap.SourceMembers.Any())
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Resource.srcMemberCannotBeNullFormat, typeSource.Name, typeDestination.Name, sourceFullName));
}
CompareSourceAndDestLiterals
(
propertyMap.CustomMapExpression != null ? propertyMap.CustomMapExpression.ReturnType : propertyMap.SourceMember.GetMemberType(),
propertyMap.CustomMapExpression != null ? propertyMap.CustomMapExpression.ToString() : propertyMap.SourceMember.Name,
sourceMemberInfo.GetMemberType()
);
void CompareSourceAndDestLiterals(Type mappedPropertyType, string mappedPropertyDescription, Type sourceMemberType)
{
//switch from IsValueType to IsLiteralType because we do not want to throw an exception for all structs
if ((mappedPropertyType.IsLiteralType() || sourceMemberType.IsLiteralType()) && sourceMemberType != mappedPropertyType)
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Resource.expressionMapValueTypeMustMatchFormat, mappedPropertyType.Name, mappedPropertyDescription, sourceMemberType.Name, propertyMap.DestinationMember.Name));
}
}
propertyMapInfoList.Add(new PropertyMapInfo(propertyMap.CustomMapExpression, propertyMap.SourceMembers.ToList()));
}
else
{
var propertyName = sourceFullName.Substring(0, sourceFullName.IndexOf(period, StringComparison.OrdinalIgnoreCase));
var propertyMap = typeMap.GetPropertyMapByDestinationProperty(propertyName);
var sourceMemberInfo = typeSource.GetFieldOrProperty(propertyMap.DestinationMember.Name);
if (propertyMap.CustomMapExpression == null && !propertyMap.SourceMembers.Any())//If sourceFullName has a period then the SourceMember cannot be null. The SourceMember is required to find the ProertyMap of its child object.
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Resource.srcMemberCannotBeNullFormat, typeSource.Name, typeDestination.Name, propertyName));
}
propertyMapInfoList.Add(new PropertyMapInfo(propertyMap.CustomMapExpression, propertyMap.SourceMembers.ToList()));
var childFullName = sourceFullName.Substring(sourceFullName.IndexOf(period, StringComparison.OrdinalIgnoreCase) + 1);
FindDestinationFullName(sourceMemberInfo.GetMemberType(), propertyMap.CustomMapExpression == null
? propertyMap.SourceMember.GetMemberType()
: propertyMap.CustomMapExpression.ReturnType, childFullName, propertyMapInfoList);
}
}
