GenericDictionaryConverter
using Castle.Core.Configuration;
using Castle.Core.Internal;
using System;
using System.Collections.Generic;
using System.Reflection;
namespace Castle.MicroKernel.SubSystems.Conversion
{
[Serializable]
public class GenericDictionaryConverter : AbstractTypeConverter
{
private class DictionaryHelper<TKey, TValue> : IGenericCollectionConverterHelper
{
private readonly GenericDictionaryConverter parent;
public DictionaryHelper(GenericDictionaryConverter parent)
{
this.parent = parent;
}
public object ConvertConfigurationToCollection(IConfiguration configuration)
{
Dictionary<TKey, TValue> dictionary = new Dictionary<TKey, TValue>();
foreach (IConfiguration child in configuration.Children) {
string text = child.Attributes["key"];
if (text == null)
throw new ConverterException("You must provide a key for the dictionary entry");
Type type = typeof(TKey);
if (child.Attributes["keyType"] != null)
type = parent.Context.Composition.PerformConversion<Type>(child.Attributes["keyType"]);
if (!ReflectionUtil.Is<TKey>(type))
throw new ArgumentException(string.Format("Could not create dictionary<{0},{1}> because {2} is not assignable to key type {0}", typeof(TKey), typeof(TValue), type));
TKey key = (TKey)parent.Context.Composition.PerformConversion(text, type);
Type type2 = typeof(TValue);
if (child.Attributes["valueType"] != null)
type2 = parent.Context.Composition.PerformConversion<Type>(child.Attributes["valueType"]);
if (!ReflectionUtil.Is<TValue>(type2))
throw new ArgumentException(string.Format("Could not create dictionary<{0},{1}> because {2} is not assignable to value type {1}", typeof(TKey), typeof(TValue), type2));
if (child.Children.Count == 1)
dictionary.Add(key, (TValue)parent.Context.Composition.PerformConversion(child.Children[0], type2));
else
dictionary.Add(key, (TValue)parent.Context.Composition.PerformConversion(child.Value, type2));
}
return dictionary;
}
}
public override bool CanHandleType(Type type)
{
if (!type.GetTypeInfo().get_IsGenericType())
return false;
Type genericTypeDefinition = type.GetGenericTypeDefinition();
if ((object)genericTypeDefinition != typeof(IDictionary<, >))
return (object)genericTypeDefinition == typeof(Dictionary<, >);
return true;
}
public override object PerformConversion(string value, Type targetType)
{
throw new NotImplementedException();
}
public override object PerformConversion(IConfiguration configuration, Type targetType)
{
Type[] genericArguments = TypeExtensions.GetGenericArguments(targetType);
if (genericArguments.Length != 2)
throw new ConverterException("Expected type with two generic arguments.");
string text = configuration.Attributes["keyType"];
Type type = genericArguments[0];
string text2 = configuration.Attributes["valueType"];
Type type2 = genericArguments[1];
if (text != null)
type = base.Context.Composition.PerformConversion<Type>(text);
if (text2 != null)
type2 = base.Context.Composition.PerformConversion<Type>(text2);
return typeof(DictionaryHelper<, >).MakeGenericType(type, type2).CreateInstance<IGenericCollectionConverterHelper>(new object[1] {
this
}).ConvertConfigurationToCollection(configuration);
}
}
}