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Remove dead code

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Zoe Roux 2024-04-21 14:12:06 +02:00
parent d36a20ce5e
commit e846a1cc18
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70
back/src/Kyoo.Abstractions/Utility/EnumerableExtensions.cs
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@ -1,70 +0,0 @@
// Kyoo - A portable and vast media library solution.
// Copyright (c) Kyoo.
//
// See AUTHORS.md and LICENSE file in the project root for full license information.
//
// Kyoo is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
//
// Kyoo is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
using System;
using System.Collections.Generic;
namespace Kyoo.Utils;
/// <summary>
/// A set of extensions class for enumerable.
/// </summary>
public static class EnumerableExtensions
{
/// <summary>
/// If the enumerable is empty, execute an action.
/// </summary>
/// <param name="self">The enumerable to check</param>
/// <param name="action">The action to execute is the list is empty</param>
/// <typeparam name="T">The type of items inside the list</typeparam>
/// <returns>The iterator proxied, there is no dual iterations.</returns>
public static IEnumerable<T> IfEmpty<T>(this IEnumerable<T> self, Action action)
{
static IEnumerable<T> Generator(IEnumerable<T> self, Action action)
{
using IEnumerator<T> enumerator = self.GetEnumerator();
if (!enumerator.MoveNext())
{
action();
yield break;
}
do
{
yield return enumerator.Current;
} while (enumerator.MoveNext());
}
return Generator(self, action);
}
/// <summary>
/// A foreach used as a function with a little specificity: the list can be null.
/// </summary>
/// <param name="self">The list to enumerate. If this is null, the function result in a no-op</param>
/// <param name="action">The action to execute for each arguments</param>
/// <typeparam name="T">The type of items in the list</typeparam>
public static void ForEach<T>(this IEnumerable<T>? self, Action<T> action)
{
if (self == null)
return;
foreach (T i in self)
action(i);
}
}

133
back/src/Kyoo.Abstractions/Utility/Merger.cs
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@ -1,133 +0,0 @@
// Kyoo - A portable and vast media library solution.
// Copyright (c) Kyoo.
//
// See AUTHORS.md and LICENSE file in the project root for full license information.
//
// Kyoo is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
//
// Kyoo is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Kyoo.Abstractions.Models.Attributes;
namespace Kyoo.Utils;
/// <summary>
/// A class containing helper methods to merge objects.
/// </summary>
public static class Merger
{
/// <summary>
/// Merge two dictionary, if the same key is found on both dictionary, the values of the second one is kept.
/// </summary>
/// <param name="first">The first dictionary to merge</param>
/// <param name="second">The second dictionary to merge</param>
/// <param name="hasChanged">
/// <c>true</c> if a new items has been added to the dictionary, <c>false</c> otherwise.
/// </param>
/// <typeparam name="T">The type of the keys in dictionaries</typeparam>
/// <typeparam name="T2">The type of values in the dictionaries</typeparam>
/// <returns>
/// A dictionary with the missing elements of <paramref name="second"/>
/// set to those of <paramref name="first"/>.
/// </returns>
public static IDictionary<T, T2>? CompleteDictionaries<T, T2>(
IDictionary<T, T2>? first,
IDictionary<T, T2>? second,
out bool hasChanged
)
{
if (first == null)
{
hasChanged = true;
return second;
}
hasChanged = false;
if (second == null)
return first;
hasChanged = second.Any(x =>
!first.ContainsKey(x.Key) || x.Value?.Equals(first[x.Key]) == false
);
foreach ((T key, T2 value) in first)
second.TryAdd(key, value);
return second;
}
/// <summary>
/// Set every non-default values of seconds to the corresponding property of second.
/// Dictionaries are handled like anonymous objects with a property per key/pair value
/// At the end, the OnMerge method of first will be called if first is a <see cref="IOnMerge"/>
/// </summary>
/// <example>
/// {id: 0, slug: "test"}, {id: 4, slug: "foo"} -> {id: 4, slug: "foo"}
/// </example>
/// <param name="first">
/// The object to complete
/// </param>
/// <param name="second">
/// Missing fields of first will be completed by fields of this item. If second is null, the function no-op.
/// </param>
/// <param name="where">
/// Filter fields that will be merged
/// </param>
/// <typeparam name="T">Fields of T will be completed</typeparam>
/// <returns><paramref name="first"/></returns>
public static T Complete<T>(T first, T? second, Func<PropertyInfo, bool>? where = null)
{
if (second == null)
return first;
Type type = typeof(T);
IEnumerable<PropertyInfo> properties = type.GetProperties()
.Where(x =>
x is { CanRead: true, CanWrite: true }
&& Attribute.GetCustomAttribute(x, typeof(NotMergeableAttribute)) == null
);
if (where != null)
properties = properties.Where(where);
foreach (PropertyInfo property in properties)
{
object? value = property.GetValue(second);
if (value?.Equals(property.GetValue(first)) == true)
continue;
if (Utility.IsOfGenericType(property.PropertyType, typeof(IDictionary<,>)))
{
Type[] dictionaryTypes = Utility
.GetGenericDefinition(property.PropertyType, typeof(IDictionary<,>))!
.GenericTypeArguments;
object?[] parameters = { property.GetValue(first), value, false };
object newDictionary = Utility.RunGenericMethod<object>(
typeof(Merger),
nameof(CompleteDictionaries),
dictionaryTypes,
parameters
)!;
if ((bool)parameters[2]!)
property.SetValue(first, newDictionary);
}
else
property.SetValue(first, value);
}
if (first is IOnMerge merge)
merge.OnMerge(second);
return first;
}
}

160
back/src/Kyoo.Abstractions/Utility/Utility.cs
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@ -177,25 +177,6 @@ public static class Utility
yield return type; yield return type;
} }
/// <summary>
/// Check if <paramref name="type"/> inherit from a generic type <paramref name="genericType"/>.
/// </summary>
/// <param name="type">The type to check</param>
/// <param name="genericType">The generic type to check against (Only generic types are supported like typeof(IEnumerable&lt;&gt;).</param>
/// <returns>True if obj inherit from genericType. False otherwise</returns>
public static bool IsOfGenericType(Type type, Type genericType)
{
if (!genericType.IsGenericType)
throw new ArgumentException($"{nameof(genericType)} is not a generic type.");
IEnumerable<Type> types = genericType.IsInterface
? type.GetInterfaces()
: type.GetInheritanceTree();
return types
.Prepend(type)
.Any(x => x.IsGenericType && x.GetGenericTypeDefinition() == genericType);
}
/// <summary> /// <summary>
/// Get the generic definition of <paramref name="genericType"/>. /// Get the generic definition of <paramref name="genericType"/>.
/// For example, calling this function with List&lt;string&gt; and typeof(IEnumerable&lt;&gt;) will return IEnumerable&lt;string&gt; /// For example, calling this function with List&lt;string&gt; and typeof(IEnumerable&lt;&gt;) will return IEnumerable&lt;string&gt;
@ -217,147 +198,6 @@ public static class Utility
.FirstOrDefault(x => x.IsGenericType && x.GetGenericTypeDefinition() == genericType); .FirstOrDefault(x => x.IsGenericType && x.GetGenericTypeDefinition() == genericType);
} }
/// <summary>
/// Retrieve a method from an <see cref="Type"/> with the given name and respect the
/// amount of parameters and generic parameters. This works for polymorphic methods.
/// </summary>
/// <param name="type">
/// The type owning the method. For non static methods, this is the <c>this</c>.
/// </param>
/// <param name="flag">
/// The binding flags of the method. This allow you to specify public/private and so on.
/// </param>
/// <param name="name">
/// The name of the method.
/// </param>
/// <param name="generics">
/// The list of generic parameters.
/// </param>
/// <param name="args">
/// The list of parameters.
/// </param>
/// <exception cref="ArgumentException">No method match the given constraints.</exception>
/// <returns>The method handle of the matching method.</returns>
public static MethodInfo GetMethod(
Type type,
BindingFlags flag,
string name,
Type[] generics,
object?[] args
)
{
MethodInfo[] methods = type.GetMethods(flag | BindingFlags.Public)
.Where(x => x.Name == name)
.Where(x => x.GetGenericArguments().Length == generics.Length)
.Where(x => x.GetParameters().Length == args.Length)
.IfEmpty(() =>
{
throw new ArgumentException(
$"A method named {name} with "
+ $"{args.Length} arguments and {generics.Length} generic "
+ $"types could not be found on {type.Name}."
);
})
// TODO this won't work but I don't know why.
// .Where(x =>
// {
// int i = 0;
// return x.GetGenericArguments().All(y => y.IsAssignableFrom(generics[i++]));
// })
// .IfEmpty(() => throw new NullReferenceException($"No method {name} match the generics specified."))
// TODO this won't work for Type<T> because T is specified in arguments but not in the parameters type.
// .Where(x =>
// {
// int i = 0;
// return x.GetParameters().All(y => y.ParameterType.IsInstanceOfType(args[i++]));
// })
// .IfEmpty(() => throw new NullReferenceException($"No method {name} match the parameters's types."))
.Take(2)
.ToArray();
if (methods.Length == 1)
return methods[0];
throw new ArgumentException(
$"Multiple methods named {name} match the generics and parameters constraints."
);
}
/// <summary>
/// Run a generic static method for a runtime <see cref="Type"/>.
/// </summary>
/// <example>
/// To run Merger.MergeLists{T} for a List where you don't know the type at compile type,
/// you could do:
/// <code lang="C#">
/// Utility.RunGenericMethod&lt;object&gt;(
/// typeof(Utility),
/// nameof(MergeLists),
/// enumerableType,
/// oldValue, newValue, equalityComparer)
/// </code>
/// </example>
/// <param name="owner">The type that owns the method. For non static methods, the type of <c>this</c>.</param>
/// <param name="methodName">The name of the method. You should use the <c>nameof</c> keyword.</param>
/// <param name="type">The generic type to run the method with.</param>
/// <param name="args">The list of arguments of the method</param>
/// <typeparam name="T">
/// The return type of the method. You can put <see cref="object"/> for an unknown one.
/// </typeparam>
/// <exception cref="ArgumentException">No method match the given constraints.</exception>
/// <returns>The return of the method you wanted to run.</returns>
/// <seealso cref="RunGenericMethod{T}(System.Type,string,System.Type[],object[])"/>
public static T? RunGenericMethod<T>(
Type owner,
string methodName,
Type type,
params object[] args
)
{
return RunGenericMethod<T>(owner, methodName, new[] { type }, args);
}
/// <summary>
/// Run a generic static method for a multiple runtime <see cref="Type"/>.
/// If your generic method only needs one type, see
/// <see cref="RunGenericMethod{T}(System.Type,string,System.Type,object[])"/>
/// </summary>
/// <example>
/// To run Merger.MergeLists{T} for a List where you don't know the type at compile type,
/// you could do:
/// <code>
/// Utility.RunGenericMethod&lt;object&gt;(
/// typeof(Utility),
/// nameof(MergeLists),
/// enumerableType,
/// oldValue, newValue, equalityComparer)
/// </code>
/// </example>
/// <param name="owner">The type that owns the method. For non static methods, the type of <c>this</c>.</param>
/// <param name="methodName">The name of the method. You should use the <c>nameof</c> keyword.</param>
/// <param name="types">The list of generic types to run the method with.</param>
/// <param name="args">The list of arguments of the method</param>
/// <typeparam name="T">
/// The return type of the method. You can put <see cref="object"/> for an unknown one.
/// </typeparam>
/// <exception cref="ArgumentException">No method match the given constraints.</exception>
/// <returns>The return of the method you wanted to run.</returns>
/// <seealso cref="RunGenericMethod{T}(System.Type,string,System.Type,object[])"/>
public static T? RunGenericMethod<T>(
Type owner,
string methodName,
Type[] types,
params object?[] args
)
{
if (types.Length < 1)
throw new ArgumentException(
$"The {nameof(types)} array is empty. At least one type is needed."
);
MethodInfo method = GetMethod(owner, BindingFlags.Static, methodName, types, args);
return (T?)method.MakeGenericMethod(types).Invoke(null, args);
}
/// <summary> /// <summary>
/// Convert a dictionary to a query string. /// Convert a dictionary to a query string.
/// </summary> /// </summary>