42 lines
2.5 KiB
C#
42 lines
2.5 KiB
C#
namespace System.Web.Mvc {
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using System;
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using System.Collections.Concurrent;
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using System.Diagnostics;
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using System.Reflection;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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internal static class ReflectedAttributeCache {
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private static readonly ConcurrentDictionary<MethodInfo, ReadOnlyCollection<ActionMethodSelectorAttribute>> _actionMethodSelectorAttributeCache = new ConcurrentDictionary<MethodInfo, ReadOnlyCollection<ActionMethodSelectorAttribute>>();
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private static readonly ConcurrentDictionary<MethodInfo, ReadOnlyCollection<ActionNameSelectorAttribute>> _actionNameSelectorAttributeCache = new ConcurrentDictionary<MethodInfo, ReadOnlyCollection<ActionNameSelectorAttribute>>();
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private static readonly ConcurrentDictionary<MethodInfo, ReadOnlyCollection<FilterAttribute>> _methodFilterAttributeCache = new ConcurrentDictionary<MethodInfo, ReadOnlyCollection<FilterAttribute>>();
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private static readonly ConcurrentDictionary<Type, ReadOnlyCollection<FilterAttribute>> _typeFilterAttributeCache = new ConcurrentDictionary<Type, ReadOnlyCollection<FilterAttribute>>();
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public static ICollection<FilterAttribute> GetTypeFilterAttributes(Type type) {
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return GetAttributes(_typeFilterAttributeCache, type);
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}
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public static ICollection<FilterAttribute> GetMethodFilterAttributes(MethodInfo methodInfo) {
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return GetAttributes(_methodFilterAttributeCache, methodInfo);
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}
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public static ICollection<ActionMethodSelectorAttribute> GetActionMethodSelectorAttributes(MethodInfo methodInfo) {
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return GetAttributes(_actionMethodSelectorAttributeCache, methodInfo);
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}
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public static ICollection<ActionNameSelectorAttribute> GetActionNameSelectorAttributes(MethodInfo methodInfo) {
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return GetAttributes(_actionNameSelectorAttributeCache, methodInfo);
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}
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private static ReadOnlyCollection<TAttribute> GetAttributes<TMemberInfo, TAttribute>(ConcurrentDictionary<TMemberInfo, ReadOnlyCollection<TAttribute>> lookup, TMemberInfo memberInfo)
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where TAttribute : Attribute
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where TMemberInfo : MemberInfo {
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Debug.Assert(memberInfo != null);
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Debug.Assert(lookup != null);
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return lookup.GetOrAdd(memberInfo, mi => new ReadOnlyCollection<TAttribute>((TAttribute[])memberInfo.GetCustomAttributes(typeof(TAttribute), inherit: true)));
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}
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}
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}
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