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.
176 lines
6.9 KiB
176 lines
6.9 KiB
#nullable enable
|
|
using Newtonsoft.Json.Linq;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Diagnostics.CodeAnalysis;
|
|
#if NET3
|
|
using Net3_Proxy;
|
|
#endif
|
|
|
|
namespace IPA.Loader.Features
|
|
{
|
|
/// <summary>
|
|
/// The root interface for a mod Feature.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Avoid storing any data in any subclasses. If you do, it may result in a failure to load the feature.
|
|
/// </remarks>
|
|
public abstract class Feature
|
|
{
|
|
/// <summary>
|
|
/// Initializes the feature with the data provided in the definition.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>This gets called AFTER your <c>Init</c> method, but BEFORE the target's <c>Init</c> method. If it is applied to the defining plugin, <c>BeforeInit</c> is not called.</para>
|
|
/// <para>Returning <see langword="false" /> does <i>not</i> prevent the plugin from being loaded. It simply prevents the feature from being used.</para>
|
|
/// </remarks>
|
|
/// <param name="meta">the metadata of the plugin that is being prepared</param>
|
|
/// <param name="featureData">the data provided with the feature</param>
|
|
/// <returns><see langword="true"/> if the feature is valid for the plugin, <see langword="false"/> otherwise</returns>
|
|
protected abstract bool Initialize(PluginMetadata meta, JObject featureData);
|
|
|
|
/// <summary>
|
|
/// The message to be logged when the feature is not valid for a plugin.
|
|
/// This should also be set whenever either <see cref="BeforeInit"/> returns false.
|
|
/// </summary>
|
|
/// <value>the message to show when the feature is marked invalid</value>
|
|
public virtual string? InvalidMessage { get; protected set; }
|
|
|
|
/// <summary>
|
|
/// Called before a plugin's `Init` method is called. This will not be called if there is no `Init` method. This should never throw an exception. An exception will abort the loading of the plugin with an error.
|
|
/// </summary>
|
|
/// <param name="plugin">the plugin to be initialized</param>
|
|
/// <returns>whether or not to call the Init method</returns>
|
|
public virtual void BeforeInit(PluginMetadata plugin) { }
|
|
|
|
/// <summary>
|
|
/// Called after a plugin has been fully initialized, whether or not there is an `Init` method. This should never throw an exception.
|
|
/// </summary>
|
|
/// <param name="plugin">the plugin that was just initialized</param>
|
|
/// <param name="pluginInstance">the instance of the plugin being initialized</param>
|
|
public virtual void AfterInit(PluginMetadata plugin, object pluginInstance) => AfterInit(plugin);
|
|
|
|
/// <summary>
|
|
/// Called after a plugin has been fully initialized, whether or not there is an `Init` method. This should never throw an exception.
|
|
/// </summary>
|
|
/// <param name="plugin">the plugin that was just initialized</param>
|
|
public virtual void AfterInit(PluginMetadata plugin) { }
|
|
|
|
/// <summary>
|
|
/// Called after a plugin with this feature appplied is disabled.
|
|
/// </summary>
|
|
/// <param name="plugin">the plugin that was disabled</param>
|
|
public virtual void AfterDisable(PluginMetadata plugin) { }
|
|
|
|
// TODO: rework features to take arguments as JSON objects
|
|
|
|
static Feature()
|
|
{
|
|
Reset();
|
|
}
|
|
|
|
internal static void Reset()
|
|
{
|
|
featureTypes = new()
|
|
{
|
|
{ "IPA.DefineFeature", typeof(DefineFeature) }
|
|
};
|
|
featureDelcarers = new()
|
|
{
|
|
{ "IPA.DefineFeature", null }
|
|
};
|
|
}
|
|
|
|
private static Dictionary<string, Type> featureTypes = null!;
|
|
private static Dictionary<string, PluginMetadata?> featureDelcarers = null!;
|
|
|
|
internal static bool HasFeature(string name) => featureTypes.ContainsKey(name);
|
|
|
|
internal static bool PreregisterFeature(PluginMetadata defining, string name)
|
|
{
|
|
if (featureDelcarers.ContainsKey(name)) return false;
|
|
featureDelcarers.Add(name, defining);
|
|
return true;
|
|
}
|
|
|
|
internal static bool RegisterFeature(PluginMetadata definingPlugin, string name, Type type)
|
|
{
|
|
if (!typeof(Feature).IsAssignableFrom(type))
|
|
throw new ArgumentException($"Feature type not subclass of {nameof(Feature)}", nameof(type));
|
|
|
|
if (featureTypes.ContainsKey(name)) return false;
|
|
|
|
if (featureDelcarers.TryGetValue(name, out var declarer))
|
|
{
|
|
if (definingPlugin != declarer)
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
featureDelcarers.Add(name, definingPlugin);
|
|
}
|
|
|
|
featureTypes.Add(name, type);
|
|
return true;
|
|
}
|
|
|
|
private class EmptyFeature : Feature
|
|
{
|
|
protected override bool Initialize(PluginMetadata meta, JObject featureData)
|
|
{
|
|
throw new NotImplementedException();
|
|
}
|
|
}
|
|
|
|
internal string FeatureName = null!;
|
|
|
|
internal class Instance
|
|
{
|
|
public readonly PluginMetadata AppliedTo;
|
|
public readonly string Name;
|
|
public readonly JObject Data;
|
|
|
|
public Instance(PluginMetadata appliedTo, string name, JObject data)
|
|
{
|
|
AppliedTo = appliedTo;
|
|
Name = name;
|
|
Data = data;
|
|
type = null;
|
|
}
|
|
|
|
private Type? type;
|
|
public bool TryGetDefiningPlugin(out PluginMetadata? plugin)
|
|
{
|
|
return featureDelcarers.TryGetValue(Name, out plugin);
|
|
}
|
|
|
|
// returns whether or not Initialize returned true, feature is always set when the thing exists
|
|
public bool TryCreate(out Feature feature)
|
|
{
|
|
if (type == null)
|
|
{
|
|
if (!featureTypes.TryGetValue(Name, out type))
|
|
{
|
|
feature = new EmptyFeature() { InvalidMessage = "No such feature type found", FeatureName = Name };
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool result;
|
|
try
|
|
{
|
|
feature = (Feature)Activator.CreateInstance(type);
|
|
feature.FeatureName = Name;
|
|
|
|
result = feature.Initialize(AppliedTo, Data);
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
result = false;
|
|
feature = new EmptyFeature() { InvalidMessage = e.ToString(), FeatureName = Name };
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
}
|