/// <summary>
/// Sets defaults for the mapping tree. The defaults used
/// to be set inside the classes, but this didn't allow for
/// the TypeConverter to be created from the Configuration's
/// TypeConverterFactory.
/// </summary>
/// <param name="map">The map to set defaults on.</param>
private void SetMapDefaults(ClassMap map)
{
foreach (var parameterMap in map.ParameterMaps)
{
if (parameterMap.ConstructorTypeMap != null)
{
SetMapDefaults(parameterMap.ConstructorTypeMap);
}
else if (parameterMap.ReferenceMap != null)
{
SetMapDefaults(parameterMap.ReferenceMap.Data.Mapping);
}
else
{
if (parameterMap.Data.TypeConverter == null)
{
parameterMap.Data.TypeConverter = configuration.TypeConverterCache.GetConverter(parameterMap.Data.Parameter.ParameterType);
}
if (parameterMap.Data.Names.Count == 0)
{
parameterMap.Data.Names.Add(parameterMap.Data.Parameter.Name);
}
}
}
foreach (var memberMap in map.MemberMaps)
{
if (memberMap.Data.Member == null)
{
continue;
}
if (memberMap.Data.TypeConverter == null)
{
memberMap.Data.TypeConverter = configuration.TypeConverterCache.GetConverter(memberMap.Data.Member.MemberType());
}
if (memberMap.Data.Names.Count == 0)
{
memberMap.Data.Names.Add(memberMap.Data.Member.Name);
}
}
foreach (var referenceMap in map.ReferenceMaps)
{
SetMapDefaults(referenceMap.Data.Mapping);
if (configuration.ReferenceHeaderPrefix != null)
{
referenceMap.Data.Prefix = configuration.ReferenceHeaderPrefix(referenceMap.Data.Member.MemberType(), referenceMap.Data.Member.Name);
}
}
}
/// <summary>
/// Auto maps the given map using constructor parameters.
/// </summary>
/// <param name="map">The map.</param>
/// <param name="configuration">The configuration.</param>
/// <param name="mapParents">The list of parents for the map.</param>
/// <param name="indexStart">The index starting point.</param>
protected virtual void AutoMapConstructorParameters(ClassMap map, CsvConfiguration configuration, LinkedList <Type> mapParents, int indexStart = 0)
{
var type = map.GetGenericType();
var constructor = configuration.GetConstructor(map.ClassType);
var parameters = constructor.GetParameters();
foreach (var parameter in parameters)
{
var typeConverterType = configuration.TypeConverterCache.GetConverter(parameter.ParameterType).GetType();
var parameterMap = new ParameterMap(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 (configuration.IgnoreReferences)
{
throw new InvalidOperationException($"Configuration '{nameof(configuration.IgnoreReferences)}' can't be true " +
"when using types without a default constructor. Constructor parameters " +
"are used and all members including references must be used.");
}
if (CheckForCircularReference(parameter.ParameterType, mapParents))
{
throw new InvalidOperationException($"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(DefaultClassMap <>).MakeGenericType(parameter.ParameterType);
var refMap = (ClassMap)ReflectionHelper.CreateInstance(refMapType);
AutoMapMembers(refMap, configuration, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
var referenceMap = new ParameterReferenceMap(parameter, refMap);
if (configuration.ReferenceHeaderPrefix != null)
{
referenceMap.Data.Prefix = configuration.ReferenceHeaderPrefix(memberTypeInfo.MemberType(), memberTypeInfo.Name);
}
parameterMap.ReferenceMap = referenceMap;
}
else if (configuration.ShouldUseConstructorParameters(parameter.ParameterType))
{
mapParents.AddLast(type);
var constructorMapType = typeof(DefaultClassMap <>).MakeGenericType(parameter.ParameterType);
var constructorMap = (ClassMap)ReflectionHelper.CreateInstance(constructorMapType);
// Need to use Max here for nested types.
AutoMapConstructorParameters(constructorMap, configuration, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
parameterMap.ConstructorTypeMap = constructorMap;
}
else
{
parameterMap.Data.TypeConverterOptions = TypeConverterOptions.Merge(new TypeConverterOptions(), configuration.TypeConverterOptionsCache.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="configuration">The configuration.</param>
/// <param name="mapParents">The list of parents for the map.</param>
/// <param name="indexStart">The index starting point.</param>
protected virtual void AutoMapMembers(ClassMap map, CsvConfiguration configuration, LinkedList <Type> mapParents, int indexStart = 0)
{
var type = map.GetGenericType();
var flags = BindingFlags.Instance | BindingFlags.Public;
if (configuration.IncludePrivateMembers)
{
flags = flags | BindingFlags.NonPublic;
}
var members = new List <MemberInfo>();
if ((configuration.MemberTypes & MemberTypes.Properties) == 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 ReflectionHelper.GetUniqueProperties(type, flags))
{
if (properties.Any(p => p.Name == property.Name))
{
// Multiple properties could have the same name if a child class property
// is hiding a parent class property by using `new`. It's possible that
// the order of the properties returned
continue;
}
properties.Add(ReflectionHelper.GetDeclaringProperty(type, property, flags));
}
members.AddRange(properties);
}
if ((configuration.MemberTypes & MemberTypes.Fields) == 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 = configuration.TypeConverterCache.GetConverter(member).GetType();
if (configuration.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)
{
// If the type is not one covered by our type converters
// and it has a parameterless constructor, create a
// reference map for it.
if (configuration.IgnoreReferences)
{
continue;
}
if (CheckForCircularReference(member.MemberType(), mapParents))
{
continue;
}
mapParents.AddLast(type);
var refMapType = typeof(DefaultClassMap <>).MakeGenericType(member.MemberType());
var refMap = (ClassMap)ReflectionHelper.CreateInstance(refMapType);
if (memberTypeInfo.HasConstructor() && !memberTypeInfo.HasParameterlessConstructor() && !memberTypeInfo.IsUserDefinedStruct())
{
AutoMapConstructorParameters(refMap, configuration, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
}
// Need to use Max here for nested types.
AutoMapMembers(refMap, configuration, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
if (refMap.MemberMaps.Count > 0 || refMap.ReferenceMaps.Count > 0)
{
var referenceMap = new MemberReferenceMap(member, refMap);
if (configuration.ReferenceHeaderPrefix != null)
{
referenceMap.Data.Prefix = configuration.ReferenceHeaderPrefix(member.MemberType(), member.Name);
}
ApplyAttributes(referenceMap);
map.ReferenceMaps.Add(referenceMap);
}
}
else
{
// Only add the member map if it can be converted later on.
// If the member will use the default converter, don't add it because
// we don't want the .ToString() value to be used when auto mapping.
// Use the top of the map tree. This will maps that have been auto mapped
// to later on get a reference to a map by doing map.Map( m => m.A.B.C.Id )
// and it will return the correct parent map type of A instead of C.
var classType = mapParents.First?.Value ?? map.ClassType;
var memberMap = MemberMap.CreateGeneric(classType, member);
// Use global values as the starting point.
memberMap.Data.TypeConverterOptions = TypeConverterOptions.Merge(new TypeConverterOptions(), configuration.TypeConverterOptionsCache.GetOptions(member.MemberType()), memberMap.Data.TypeConverterOptions);
memberMap.Data.Index = map.GetMaxIndex() + 1;
ApplyAttributes(memberMap);
map.MemberMaps.Add(memberMap);
}
}
map.ReIndex(indexStart);
}
