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(ResourceInstance<T>): lazily initialized wrapper for formats instances.

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morkt 2017-04-08 18:38:23 +04:00
parent 51a1e81a17
commit 3b74dae09f
1 changed files with 27 additions and 0 deletions
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27
GameRes/FormatCatalog.cs
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@ -32,6 +32,7 @@ using System.Linq;
using GameRes.Collections; using GameRes.Collections;
using System.Runtime.Serialization.Formatters.Binary; using System.Runtime.Serialization.Formatters.Binary;
using GameRes.Compression; using GameRes.Compression;
using System.Threading;
namespace GameRes namespace GameRes
{ {
@ -314,6 +315,32 @@ namespace GameRes
} }
} }
/// <summary>
/// Lazily initialized wrapper for resource instances.
/// </summary>
public class ResourceInstance<T> where T : IResource
{
T m_format;
Func<T> m_resolver;
public ResourceInstance (string tag)
{
var t = typeof(T);
if (typeof(ImageFormat) == t || t.IsSubclassOf (typeof(ImageFormat)))
m_resolver = () => ImageFormat.FindByTag (tag) as T;
else if (typeof(ArchiveFormat) == t || t.IsSubclassOf (typeof(ArchiveFormat)))
m_resolver = () => FormatCatalog.Instance.ArcFormats.FirstOrDefault (f => f.Tag == tag) as T;
else if (typeof(AudioFormat) == t || t.IsSubclassOf (typeof(AudioFormat)))
m_resolver = () => FormatCatalog.Instance.AudioFormats.FirstOrDefault (f => f.Tag == tag) as T;
else if (typeof(ScriptFormat) == t || t. IsSubclassOf (typeof(ScriptFormat)))
m_resolver = () => FormatCatalog.Instance.ScriptFormats.FirstOrDefault (f => f.Tag == tag) as T;
else
throw new ApplicationException ("Invalid resource type specified for ResourceInstance<T>");
}
public T Value { get { return LazyInitializer.EnsureInitialized (ref m_format, m_resolver); } }
}
[Serializable] [Serializable]
public class SchemeDataBase public class SchemeDataBase
{ {