75 lines
2.1 KiB
C#
75 lines
2.1 KiB
C#
using System;
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namespace FlowScope.Resources
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{
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internal sealed class ResourceEntry
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{
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private readonly Action<string, Type, object> _release;
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private int _referenceCount;
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private bool _released;
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public ResourceEntry(string key, object asset, Action<string, object> release)
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: this(key, asset?.GetType(), asset, (_, _, releasedAsset) => release(key, releasedAsset))
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{
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}
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public ResourceEntry(string key, Type assetType, object asset, Action<string, Type, object> release)
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{
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Key = string.IsNullOrWhiteSpace(key)
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? throw new ArgumentException("Resource key is required.", nameof(key))
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: key;
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AssetType = assetType ?? throw new ArgumentNullException(nameof(assetType));
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Asset = asset ?? throw new ArgumentNullException(nameof(asset));
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_release = release ?? throw new ArgumentNullException(nameof(release));
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}
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public string Key { get; }
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public Type AssetType { get; }
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public object Asset { get; private set; }
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public int ReferenceCount => _referenceCount;
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public ResourceHandle<T> CreateHandle<T>() where T : class
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{
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if (_released)
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{
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throw new ObjectDisposedException(nameof(ResourceEntry));
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}
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_referenceCount++;
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return new ResourceHandle<T>(this);
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}
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public void ReleaseHandle()
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{
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if (_released)
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{
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return;
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}
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_referenceCount--;
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if (_referenceCount > 0)
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{
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return;
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}
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_released = true;
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var asset = Asset;
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Asset = null;
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_release(Key, AssetType, asset);
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}
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public void ReleaseWithoutHandle()
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{
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if (_released)
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{
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return;
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}
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_released = true;
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var asset = Asset;
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Asset = null;
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_release(Key, AssetType, asset);
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}
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}
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}
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