private static bool LinkDecoder <T>(IDecoderDescriptor <T> descriptor, BindingFlags bindings,
IDictionary <Type, object> parents)
{
var entityType = typeof(T);
parents[entityType] = descriptor;
if (Linker.TryLinkDecoderAsValue(descriptor))
{
return(true);
}
// Bind descriptor as an array of target type is also array
if (entityType.IsArray)
{
var element = entityType.GetElementType();
var setter = MethodResolver
.Create <Func <Setter <object[], IEnumerable <object> > > >(() =>
SetterGenerator.CreateFromEnumerable <object>())
.SetGenericArguments(element)
.Invoke(null);
return(Linker.LinkDecoderAsArray(descriptor, bindings, element, setter, parents));
}
// Try to bind descriptor as an array if target type IEnumerable<>
foreach (var interfaceType in entityType.GetInterfaces())
{
// Make sure that interface is IEnumerable<T> and store typeof(T)
if (!TypeResolver.Create(interfaceType)
.HasSameDefinitionThan <IEnumerable <object> >(out var interfaceTypeArguments))
{
continue;
}
var elementType = interfaceTypeArguments[0];
// Search constructor compatible with IEnumerable<>
foreach (var constructor in entityType.GetConstructors())
{
var parameters = constructor.GetParameters();
if (parameters.Length != 1)
{
continue;
}
var parameterType = parameters[0].ParameterType;
if (!TypeResolver.Create(parameterType)
.HasSameDefinitionThan <IEnumerable <object> >(out var parameterArguments) ||
parameterArguments[0] != elementType)
{
continue;
}
var setter = MethodResolver
.Create <Func <ConstructorInfo, Setter <object, object> > >(c =>
SetterGenerator.CreateFromConstructor <object, object>(c))
.SetGenericArguments(entityType, parameterType)
.Invoke(null, constructor);
return(Linker.LinkDecoderAsArray(descriptor, bindings, elementType, setter, parents));
}
}
// Bind readable and writable instance properties
foreach (var property in entityType.GetProperties(bindings))
{
if (property.GetGetMethod() == null || property.GetSetMethod() == null ||
property.Attributes.HasFlag(PropertyAttributes.SpecialName))
{
continue;
}
var setter = MethodResolver
.Create <Func <PropertyInfo, Setter <object, object> > >(p =>
SetterGenerator.CreateFromProperty <object, object>(p))
.SetGenericArguments(entityType, property.PropertyType)
.Invoke(null, property);
if (!Linker.LinkDecoderAsObject(descriptor, bindings, property.PropertyType, property.Name, setter,
parents))
{
return(false);
}
}
// Bind public instance fields
foreach (var field in entityType.GetFields(bindings))
{
if (field.Attributes.HasFlag(FieldAttributes.SpecialName))
{
continue;
}
var setter = MethodResolver
.Create <Func <FieldInfo, Setter <object, object> > >(f =>
SetterGenerator.CreateFromField <object, object>(f))
.SetGenericArguments(entityType, field.FieldType)
.Invoke(null, field);
if (!Linker.LinkDecoderAsObject(descriptor, bindings, field.FieldType, field.Name, setter, parents))
{
return(false);
}
}
return(true);
}