private static IEnumerable<PropertyModel> CreateAdapterModel(Expression source, Expression destination, CompileArgument arg)
{
Type sourceType = source.Type;
var destinationMembers = arg.DestinationType.GetPublicFieldsAndProperties(allowNoSetter: false);
var unmappedDestinationMembers = new List<string>();
var properties = new List<PropertyModel>();
for (int i = 0; i < destinationMembers.Count; i++)
{
MemberInfo destinationMember = destinationMembers[i];
bool isProperty = destinationMember is PropertyInfo;
if (ProcessIgnores(arg.Settings, destinationMember)) continue;
if (ProcessCustomResolvers(source, destination, arg.Settings, destinationMember, properties)) continue;
MemberInfo sourceMember = ReflectionUtils.GetPublicFieldOrProperty(sourceType, isProperty, destinationMember.Name);
if (sourceMember != null)
{
var propertyModel = new PropertyModel
{
ConvertType = 1,
Getter = sourceMember is PropertyInfo
? Expression.Property(source, (PropertyInfo)sourceMember)
: Expression.Field(source, (FieldInfo)sourceMember),
Setter = destinationMember is PropertyInfo
? Expression.Property(destination, (PropertyInfo) destinationMember)
: Expression.Field(destination, (FieldInfo) destinationMember),
SetterProperty = destinationMember,
};
properties.Add(propertyModel);
}
else
{
if (FlattenMethod(source, destination, destinationMember, properties)) continue;
if (FlattenClass(source, destination, destinationMember, properties, arg.MapType == MapType.Projection)) continue;
if (destinationMember.HasPublicSetter())
{
unmappedDestinationMembers.Add(destinationMember.Name);
}
}
}
if (arg.Context.Config.RequireDestinationMemberSource && unmappedDestinationMembers.Count > 0)
{
throw new ArgumentOutOfRangeException($"The following members of destination class {arg.DestinationType} do not have a corresponding source member mapped or ignored:{string.Join(",", unmappedDestinationMembers)}");
}
return properties;
}
private static bool FlattenMethod(
Expression source,
Expression destination,
MemberInfo destinationMember,
List<PropertyModel> properties)
{
var getMethod = source.Type.GetMethod(string.Concat("Get", destinationMember.Name));
if (getMethod != null)
{
var propertyModel = new PropertyModel
{
ConvertType = 2,
Getter = Expression.Call(source, getMethod),
Setter = destinationMember is PropertyInfo
? Expression.Property(destination, (PropertyInfo)destinationMember)
: Expression.Field(destination, (FieldInfo)destinationMember),
SetterProperty = destinationMember,
};
properties.Add(propertyModel);
return true;
}
return false;
}
private static bool ProcessCustomResolvers(
Expression source,
Expression destination,
TypeAdapterSettings config,
MemberInfo destinationMember,
List<PropertyModel> properties)
{
bool isAdded = false;
var resolvers = config.Resolvers;
if (resolvers != null && resolvers.Count > 0)
{
PropertyModel propertyModel = null;
LambdaExpression lastCondition = null;
for (int j = 0; j < resolvers.Count; j++)
{
var resolver = resolvers[j];
if (destinationMember.Name.Equals(resolver.MemberName))
{
if (propertyModel == null)
{
propertyModel = new PropertyModel
{
ConvertType = 5,
Setter = destinationMember is PropertyInfo
? Expression.Property(destination, (PropertyInfo) destinationMember)
: Expression.Field(destination, (FieldInfo) destinationMember),
SetterProperty = destinationMember,
};
isAdded = true;
}
Expression invoke = resolver.Invoker.Apply(source);
propertyModel.Getter = lastCondition != null
? Expression.Condition(lastCondition.Apply(source), propertyModel.Getter, invoke)
: invoke;
lastCondition = resolver.Condition;
if (resolver.Condition == null)
break;
}
}
if (propertyModel != null)
{
if (lastCondition != null)
propertyModel.Getter = Expression.Condition(lastCondition.Apply(source), propertyModel.Getter, Expression.Constant(propertyModel.Getter.Type.GetDefault(), propertyModel.Getter.Type));
properties.Add(propertyModel);
}
}
return isAdded;
}
private static bool FlattenClass(
Expression source,
Expression destination,
MemberInfo destinationMember,
List<PropertyModel> properties,
bool isProjection)
{
var getter = ReflectionUtils.GetDeepFlattening(source, destinationMember.Name, isProjection);
if (getter != null)
{
var propertyModel = new PropertyModel
{
ConvertType = 3,
Getter = getter,
Setter = destinationMember is PropertyInfo
? Expression.Property(destination, (PropertyInfo) destinationMember)
: Expression.Field(destination, (FieldInfo) destinationMember),
SetterProperty = destinationMember,
};
properties.Add(propertyModel);
return true;
}
return false;
}