icdsystems/ICD.Common.Utils
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Caching class attributes

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This commit is contained in:
Chris Cameron
2018-02-09 09:38:16 -05:00
parent 4e498cbee6
commit 03e852fd2e
1 changed files with 30 additions and 6 deletions
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36
ICD.Common.Utils/AttributeUtils.cs
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@@ -25,6 +25,7 @@ namespace ICD.Common.Utils
private static readonly IcdHashSet<Type> s_CachedTypes; private static readonly IcdHashSet<Type> s_CachedTypes;
private static readonly Dictionary<Attribute, MethodInfo> s_AttributeToMethodCache; private static readonly Dictionary<Attribute, MethodInfo> s_AttributeToMethodCache;
private static readonly Dictionary<Attribute, Type> s_AttributeToTypeCache;
private static readonly Dictionary<Type, IcdHashSet<Attribute>> s_TypeToAttributesCache; private static readonly Dictionary<Type, IcdHashSet<Attribute>> s_TypeToAttributesCache;
private static ILoggerService Logger { get { return ServiceProvider.TryGetService<ILoggerService>(); } } private static ILoggerService Logger { get { return ServiceProvider.TryGetService<ILoggerService>(); } }
@@ -38,6 +39,7 @@ namespace ICD.Common.Utils
s_CachedTypes = new IcdHashSet<Type>(); s_CachedTypes = new IcdHashSet<Type>();
s_AttributeToMethodCache = new Dictionary<Attribute, MethodInfo>(); s_AttributeToMethodCache = new Dictionary<Attribute, MethodInfo>();
s_AttributeToTypeCache = new Dictionary<Attribute, Type>();
s_TypeToAttributesCache = new Dictionary<Type, IcdHashSet<Attribute>>(); s_TypeToAttributesCache = new Dictionary<Type, IcdHashSet<Attribute>>();
} }
@@ -129,14 +131,11 @@ namespace ICD.Common.Utils
try try
{ {
#if SIMPLSHARP
s_TypeToAttributesCache[type] = new IcdHashSet<Attribute>(type.GetCustomAttributes<Attribute>(false)); s_TypeToAttributesCache[type] = new IcdHashSet<Attribute>(type.GetCustomAttributes<Attribute>(false));
foreach (Attribute attribute in s_TypeToAttributesCache[type])
s_AttributeToTypeCache[attribute] = type;
methods = type.GetMethods(); methods = type.GetMethods();
#else
s_TypeToAttributesCache[type] =
new IcdHashSet<Attribute>(ReflectionExtensions.GetCustomAttributes<Attribute>(type.GetTypeInfo(), false));
methods = type.GetTypeInfo().GetMethods();
#endif
} }
// GetMethods for Open Generic Types is not supported. // GetMethods for Open Generic Types is not supported.
catch (NotSupportedException) catch (NotSupportedException)
@@ -170,6 +169,18 @@ namespace ICD.Common.Utils
#region Lookup #region Lookup
/// <summary>
/// Gets the class attributes of the given generic type.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public static IEnumerable<T> GetClassAttributes<T>()
where T : Attribute
{
return s_AttributeToTypeCache.Select(kvp => kvp.Key)
.OfType<T>();
}
/// <summary> /// <summary>
/// Gets the first attribute on the given class type matching the generic type. /// Gets the first attribute on the given class type matching the generic type.
/// </summary> /// </summary>
@@ -218,6 +229,19 @@ namespace ICD.Common.Utils
: Enumerable.Empty<Attribute>(); : Enumerable.Empty<Attribute>();
} }
/// <summary>
/// Gets the type with the given attribute.
/// </summary>
/// <param name="attribute"></param>
/// <returns></returns>
public static Type GetClass(Attribute attribute)
{
if (attribute == null)
throw new ArgumentNullException("attribute");
return s_AttributeToTypeCache[attribute];
}
/// <summary> /// <summary>
/// Gets all of the cached method attributes of the given type. /// Gets all of the cached method attributes of the given type.
/// </summary> /// </summary>