public static CodeStatement CreateToTargetAssignmentMethod(
TranslateAttribute attr,
CodeParameterDeclarationExpression toTarget,
PropertyInfo sourceProperty,
CodeVariableReferenceExpression fromSourceVar,
Func<Type, Type, TranslateAttribute> getTypesTranslateAttributeFn)
{
//model.Name = this.Name;
var targetProperty = attr.TargetType.GetProperty(sourceProperty.Name);
var cantWriteToTarget = targetProperty.GetSetMethod() == null;
if (cantWriteToTarget)
{
return new CodeCommentStatement(string.Format("Skipping property 'model.{0}' because 'model.{1}' is read-only",
targetProperty.Name, sourceProperty.Name));
}
var cantReadFromSource = sourceProperty.GetGetMethod() == null;
if (cantReadFromSource)
{
return new CodeCommentStatement(string.Format("Skipping property 'model.{0}' because 'this.{1}' is write-only",
targetProperty.Name, sourceProperty.Name));
}
var areBothTheSameTypes = targetProperty.PropertyType.IsAssignableFrom(sourceProperty.PropertyType);
if (areBothTheSameTypes)
{
return toTarget.Assign(sourceProperty.Name, fromSourceVar.RefProperty(sourceProperty.Name));
}
//model.BillingAddress = this.BillingAddress.ToTarget();
var sourcePropertyType = sourceProperty.PropertyType;
var targetPropertyType = targetProperty.PropertyType;
var sourceAttr = getTypesTranslateAttributeFn(sourcePropertyType, targetPropertyType);
var isSourceTranslatableAlso = sourceAttr != null;
var useExtensionMethods = attr is TranslateExtensionAttribute;
if (isSourceTranslatableAlso)
{
var toTargetMethodName = sourceAttr.GetConvertToTargetMethodName();
var method = fromSourceVar.RefProperty(sourceProperty.Name).Call(toTargetMethodName);
return fromSourceVar.RefProperty(sourceProperty.Name).IfIsNotNull(
toTarget.Assign(sourceProperty.Name, method)
);
}
var sourceIsGenericList = sourcePropertyType.IsGenericType && sourcePropertyType.GetGenericTypeDefinition() == typeof(List<>);
var targetIsGenericList = targetPropertyType.IsGenericType && targetPropertyType.GetGenericTypeDefinition() == typeof(List<>);
var bothAreGenericLists = sourceIsGenericList && targetIsGenericList;
if (bothAreGenericLists)
{
//to.PhoneNumbers = from.PhoneNumbers.ToPhoneNumbers();
var propertyListItemTypeAttr = getTypesTranslateAttributeFn(sourcePropertyType.GetGenericArguments()[0], targetPropertyType.GetGenericArguments()[0]);
var sourceIsTranslatable = propertyListItemTypeAttr != null;
if (sourceIsTranslatable)
{
var toTargetsMethodName = propertyListItemTypeAttr.GetConvertToTargetsMethodName();
var method = useExtensionMethods
? fromSourceVar.RefProperty(sourceProperty.Name).Call(toTargetsMethodName)
: propertyListItemTypeAttr.SourceType.Call(toTargetsMethodName, sourceProperty.Name.ThisProperty());
return toTarget.Assign(sourceProperty.Name, method);
}
}
//model.Type = StringConverterUtils.Parse<Target.PhoneNumberType>(this.Type);
var sourcePropertyIsStringAndTargetIsConvertible = sourceProperty.PropertyType == typeof(string)
&& StringConverterUtils.CanCreateFromString(targetProperty.PropertyType);
if (sourcePropertyIsStringAndTargetIsConvertible)
{
//model.CardType = StringConverterUtils.Parse<CardType>(this.CardType);
var methodResult = typeof(StringConverterUtils).CallGeneric(CONVERTER_PARSE_METHOD,
new[] { targetProperty.PropertyType.GenericDefinition() },
fromSourceVar.RefProperty(sourceProperty.Name));
return toTarget.Assign(sourceProperty.Name.ThisProperty(), methodResult);
}
// Converting 'System.Collections.Generic.List`1 PhoneNumbers' to 'System.Collections.Generic.List`1 PhoneNumbers' is unsupported
return new CodeCommentStatement(string.Format("Converting '{0}.{1} {2}' to '{3}.{4} {5}' is unsupported"
, sourceProperty.PropertyType.Namespace, sourceProperty.PropertyType.Name, sourceProperty.Name
, targetProperty.PropertyType.Namespace, targetProperty.PropertyType.Name, targetProperty.Name));
}
