/// <summary>
/// Auto maps the given map using constructor parameters.
/// </summary>
/// <param name="map">The map to auto map.</param>
/// <param name="options">Options for auto mapping.</param>
/// <param name="mapParents">The list of parents for the map.</param>
/// <param name="indexStart">The index starting point.</param>
protected virtual void AutoMapConstructorParameters(CsvClassMap map, AutoMapOptions options, LinkedList <Type> mapParents, int indexStart = 0)
{
var type = map.GetGenericType();
var constructor = options.GetConstructor(map.ClassType);
var parameters = constructor.GetParameters();
foreach (var parameter in parameters)
{
var typeConverterType = TypeConverterFactory.Current.GetConverter(parameter.ParameterType).GetType();
var parameterMap = new CsvParameterMap(parameter);
var memberTypeInfo = parameter.ParameterType.GetTypeInfo();
var isDefaultConverter = typeConverterType == typeof(DefaultTypeConverter);
if (isDefaultConverter && (memberTypeInfo.HasParameterlessConstructor() || memberTypeInfo.IsUserDefinedStruct()))
{
// If the type is not one covered by our type converters
// and it has a parameterless constructor, create a
// reference map for it.
if (options.IgnoreReferences)
{
throw new InvalidOperationException($"Configuration '{nameof( options.IgnoreReferences )}' can't be true " +
"when using types without a default constructor. Constructor parameters " +
"are used and all properties including references must be used.");
}
if (CheckForCircularReference(parameter.ParameterType, mapParents))
{
throw new InvalidOperationException($"A circular reference was detected in constructor paramter '{parameter.Name}'." +
"Since all parameters must be supplied for a constructor, this parameter can't be skipped.");
}
mapParents.AddLast(type);
var refMapType = typeof(DefaultCsvClassMap <>).MakeGenericType(parameter.ParameterType);
var refMap = (CsvClassMap)ReflectionHelper.CreateInstance(refMapType);
var refOptions = options.Copy();
refOptions.IgnoreReferences = false;
AutoMapProperties(refMap, options, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
var referenceMap = new CsvParameterReferenceMap(parameter, refMap);
if (options.PrefixReferenceHeaders)
{
referenceMap.Prefix();
}
parameterMap.ReferenceMap = referenceMap;
}
else if (options.ShouldUseConstructorParameters(parameter.ParameterType))
{
mapParents.AddLast(type);
var constructorMapType = typeof(DefaultCsvClassMap <>).MakeGenericType(parameter.ParameterType);
var constructorMap = (CsvClassMap)ReflectionHelper.CreateInstance(constructorMapType);
var constructorOptions = options.Copy();
constructorOptions.IgnoreReferences = false;
// Need to use Max here for nested types.
AutoMapConstructorParameters(constructorMap, constructorOptions, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
parameterMap.ConstructorTypeMap = constructorMap;
}
else
{
parameterMap.Data.TypeConverterOptions = TypeConverterOptions.Merge(new TypeConverterOptions(), options.TypeConverterOptionsFactory.GetOptions(parameter.ParameterType), parameterMap.Data.TypeConverterOptions);
parameterMap.Data.Index = map.GetMaxIndex() + 1;
}
map.ParameterMaps.Add(parameterMap);
}
map.ReIndex(indexStart);
}
/// <summary>
/// Auto maps the given map and checks for circular references as it goes.
/// </summary>
/// <param name="map">The map to auto map.</param>
/// <param name="options">Options for auto mapping.</param>
/// <param name="mapParents">The list of parents for the map.</param>
/// <param name="indexStart">The index starting point.</param>
protected virtual void AutoMapProperties(CsvClassMap map, AutoMapOptions options, LinkedList <Type> mapParents, int indexStart = 0)
{
var type = map.GetGenericType();
var flags = BindingFlags.Instance | BindingFlags.Public;
if (options.IncludePrivateProperties)
{
flags = flags | BindingFlags.NonPublic;
}
var members = new List <MemberInfo>();
if (options.MemberTypes.HasFlag(MemberTypes.Properties))
{
// We need to go up the declaration tree and find the actual type the property
// exists on and use that PropertyInfo instead. This is so we can get the private
// set method for the property.
var properties = new List <PropertyInfo>();
foreach (var property in type.GetProperties(flags))
{
properties.Add(ReflectionHelper.GetDeclaringProperty(type, property, flags));
}
members.AddRange(properties);
}
if (options.MemberTypes.HasFlag(MemberTypes.Fields))
{
var fields = new List <MemberInfo>();
foreach (var field in type.GetFields(flags))
{
if (!field.GetCustomAttributes(typeof(CompilerGeneratedAttribute), false).Any())
{
fields.Add(field);
}
}
members.AddRange(fields);
}
foreach (var member in members)
{
var typeConverterType = TypeConverterFactory.Current.GetConverter(member.MemberType()).GetType();
if (options.HasHeaderRecord && enumerableConverters.Contains(typeConverterType))
{
// Enumerable converters can't write the header properly, so skip it.
continue;
}
var memberTypeInfo = member.MemberType().GetTypeInfo();
var isDefaultConverter = typeConverterType == typeof(DefaultTypeConverter);
if (isDefaultConverter && (memberTypeInfo.HasParameterlessConstructor() || memberTypeInfo.IsUserDefinedStruct()))
{
// If the type is not one covered by our type converters
// and it has a parameterless constructor, create a
// reference map for it.
if (options.IgnoreReferences)
{
continue;
}
if (CheckForCircularReference(member.MemberType(), mapParents))
{
continue;
}
mapParents.AddLast(type);
var refMapType = typeof(DefaultCsvClassMap <>).MakeGenericType(member.MemberType());
var refMap = (CsvClassMap)ReflectionHelper.CreateInstance(refMapType);
var refOptions = options.Copy();
refOptions.IgnoreReferences = false;
// Need to use Max here for nested types.
AutoMapProperties(refMap, options, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
if (refMap.PropertyMaps.Count > 0 || refMap.ReferenceMaps.Count > 0)
{
var referenceMap = new CsvPropertyReferenceMap(member, refMap);
if (options.PrefixReferenceHeaders)
{
referenceMap.Prefix();
}
map.ReferenceMaps.Add(referenceMap);
}
}
else
{
var propertyMap = CsvPropertyMap.CreateGeneric(map.ClassType, member);
// Use global values as the starting point.
propertyMap.Data.TypeConverterOptions = TypeConverterOptions.Merge(new TypeConverterOptions(), options.TypeConverterOptionsFactory.GetOptions(member.MemberType()), propertyMap.Data.TypeConverterOptions);
propertyMap.Data.Index = map.GetMaxIndex() + 1;
if (!isDefaultConverter)
{
// Only add the property/field map if it can be converted later on.
// If the property/field will use the default converter, don't add it because
// we don't want the .ToString() value to be used when auto mapping.
map.PropertyMaps.Add(propertyMap);
}
}
}
map.ReIndex(indexStart);
}