You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

82 lines
4.0 KiB

using IPA.Config.Data;
using System;
namespace IPA.Config.Stores.Converters
{
/// <summary>
/// A <see cref="ValueConverter{T}"/> for objects normally serialized to config via <see cref="GeneratedExtension.Generated{T}(Config, bool)"/>.
/// </summary>
/// <typeparam name="T">the same type parameter that would be passed into <see cref="GeneratedExtension.Generated{T}(Config, bool)"/></typeparam>
/// <seealso cref="GeneratedExtension.Generated{T}(Config, bool)"/>
public class CustomObjectConverter<T> : ValueConverter<T> where T : class
{
private interface IImpl
{
T FromValue(Value value, object parent);
Value ToValue(T obj, object parent);
}
private class Impl<U> : IImpl where U : class, GeneratedStore.IGeneratedStore, T
{
private static readonly GeneratedStore.GeneratedStoreCreator creator = GeneratedStore.GetCreator(typeof(T));
public T FromValue(Value value, object parent)
{ // lots of casting here, but it works i promise (parent can be a non-IGeneratedStore, however it won't necessarily behave then)
var obj = creator(parent as GeneratedStore.IGeneratedStore) as U;
obj.Deserialize(value);
return obj;
}
public Value ToValue(T obj, object parent)
{
if (obj is GeneratedStore.IGeneratedStore store)
return store.Serialize();
else
return null; // TODO: make this behave sanely instead of just giving null
}
}
private static readonly IImpl impl = (IImpl)Activator.CreateInstance(
typeof(Impl<>).MakeGenericType(GeneratedStore.GetGeneratedType(typeof(T))));
/// <summary>
/// Deserializes <paramref name="value"/> into a <typeparamref name="T"/> with the given <paramref name="parent"/>.
/// </summary>
/// <param name="value">the <see cref="Value"/> to deserialize</param>
/// <param name="parent">the parent object that will own the deserialized value</param>
/// <returns>the deserialized value</returns>
/// <seealso cref="ValueConverter{T}.FromValue(Value, object)"/>
public static T Deserialize(Value value, object parent)
=> impl.FromValue(value, parent);
/// <summary>
/// Serializes <paramref name="obj"/> into a <see cref="Value"/> structure, given <paramref name="parent"/>.
/// </summary>
/// <param name="obj">the object to serialize</param>
/// <param name="parent">the parent object that owns <paramref name="obj"/></param>
/// <returns>the <see cref="Value"/> tree that represents <paramref name="obj"/></returns>
/// <seealso cref="ValueConverter{T}.ToValue(T, object)"/>
public static Value Serialize(T obj, object parent)
=> impl.ToValue(obj, parent);
/// <summary>
/// Deserializes <paramref name="value"/> into a <typeparamref name="T"/> with the given <paramref name="parent"/>.
/// </summary>
/// <param name="value">the <see cref="Value"/> to deserialize</param>
/// <param name="parent">the parent object that will own the deserialized value</param>
/// <returns>the deserialized value</returns>
/// <seealso cref="ValueConverter{T}.FromValue(Value, object)"/>
public override T FromValue(Value value, object parent)
=> impl.FromValue(value, parent);
/// <summary>
/// Serializes <paramref name="obj"/> into a <see cref="Value"/> structure, given <paramref name="parent"/>.
/// </summary>
/// <param name="obj">the object to serialize</param>
/// <param name="parent">the parent object that owns <paramref name="obj"/></param>
/// <returns>the <see cref="Value"/> tree that represents <paramref name="obj"/></returns>
/// <seealso cref="ValueConverter{T}.ToValue(T, object)"/>
public override Value ToValue(T obj, object parent)
=> impl.ToValue(obj, parent);
}
}