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79 lines
3.4 KiB
79 lines
3.4 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace IPA.Loader
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{
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public sealed class StateTransitionTransaction : IDisposable
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{
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private readonly HashSet<PluginMetadata> currentlyEnabled;
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private readonly HashSet<PluginMetadata> currentlyDisabled;
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private readonly HashSet<PluginMetadata> toEnable = new HashSet<PluginMetadata>();
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private readonly HashSet<PluginMetadata> toDisable = new HashSet<PluginMetadata>();
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internal StateTransitionTransaction(IEnumerable<PluginMetadata> enabled, IEnumerable<PluginMetadata> disabled)
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{
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currentlyEnabled = new HashSet<PluginMetadata>(enabled.ToArray());
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currentlyDisabled = new HashSet<PluginMetadata>(disabled.ToArray());
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}
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public bool WillNeedRestart => toEnable.Concat(toDisable).Any(m => m.RuntimeOptions != RuntimeOptions.DynamicInit);
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internal IEnumerable<PluginMetadata> ToEnable => toEnable;
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internal IEnumerable<PluginMetadata> ToDisable => toDisable;
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public IEnumerable<PluginMetadata> EnabledPlugins => currentlyEnabled.Except(toDisable).Concat(toEnable);
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public IEnumerable<PluginMetadata> DisabledPlugins => currentlyDisabled.Except(toEnable).Concat(toDisable);
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public bool IsEnabled(PluginMetadata meta)
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=> ThrowIfDisposed<bool>()
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|| (currentlyEnabled.Contains(meta) && !toDisable.Contains(meta))
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|| toEnable.Contains(meta);
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public bool IsDisabled(PluginMetadata meta)
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=> ThrowIfDisposed<bool>()
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|| (currentlyDisabled.Contains(meta) && !toEnable.Contains(meta))
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|| toDisable.Contains(meta);
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public bool Enable(PluginMetadata meta)
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{ // returns whether or not state was changed
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ThrowIfDisposed();
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if (!currentlyEnabled.Contains(meta) && !currentlyDisabled.Contains(meta))
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throw new ArgumentException(nameof(meta), "Plugin metadata does not represent a loadable plugin");
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if (toEnable.Contains(meta)) return false;
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if (currentlyEnabled.Contains(meta) && !toDisable.Contains(meta)) return false;
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toDisable.Remove(meta);
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toEnable.Add(meta);
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return true;
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}
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public bool Disable(PluginMetadata meta)
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{ // returns whether or not state was changed
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ThrowIfDisposed();
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if (!currentlyEnabled.Contains(meta) && !currentlyDisabled.Contains(meta))
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throw new ArgumentException(nameof(meta), "Plugin metadata does not represent a ");
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if (toEnable.Contains(meta)) return false;
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if (currentlyEnabled.Contains(meta) && !toDisable.Contains(meta)) return false;
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toDisable.Remove(meta);
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toEnable.Add(meta);
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return true;
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}
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public Task Commit() => PluginManager.CommitTransaction(this);
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private void ThrowIfDisposed() => ThrowIfDisposed<byte>();
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private T ThrowIfDisposed<T>()
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{
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if (disposed)
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throw new ObjectDisposedException(nameof(StateTransitionTransaction));
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return default;
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}
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private bool disposed = false;
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public void Dispose()
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=> disposed = true;
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}
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}
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