netcore/System.Private.CoreLib/src/System/Attribute.cs

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3 // See the LICENSE file in the project root for more information.
   4
   5 #nullable disable
   6 using System.Reflection;
   7
   8 namespace System
   9 {
  10         partial class Attribute
  11         {
  12                 static Attribute? GetAttr (ICustomAttributeProvider element, Type attributeType, bool inherit)
  13                 {
  14                         if (attributeType == null)
  15                                 throw new ArgumentNullException (nameof (attributeType));
  16                         if (!attributeType.IsSubclassOf (typeof (Attribute)) && attributeType != typeof (Attribute) && attributeType != typeof (CustomAttribute))
  17                                 throw new ArgumentException (SR.Argument_MustHaveAttributeBaseClass + " " + attributeType.FullName);
  18
  19                         var attrs = CustomAttribute.GetCustomAttributes (element, attributeType, inherit);
  20                         if (attrs == null || attrs.Length == 0)
  21                                 return null;
  22                         if (attrs.Length != 1)
  23                                 throw new AmbiguousMatchException ();
  24                         return (Attribute)(attrs [0]);
  25                 }
  26
  27                 public static Attribute GetCustomAttribute (Assembly element, Type attributeType) => GetAttr (element, attributeType, true);
  28                 public static Attribute GetCustomAttribute(Assembly element, Type attributeType, bool inherit) => GetAttr (element, attributeType, inherit);
  29                 public static Attribute GetCustomAttribute(MemberInfo element, Type attributeType) => GetAttr (element, attributeType, true);
  30                 public static Attribute GetCustomAttribute(MemberInfo element, Type attributeType, bool inherit) => GetAttr (element, attributeType, inherit);
  31                 public static Attribute GetCustomAttribute(Module element, Type attributeType) => GetAttr (element, attributeType, true);
  32                 public static Attribute GetCustomAttribute(Module element, Type attributeType, bool inherit) => GetAttr (element, attributeType, inherit);
  33                 public static Attribute GetCustomAttribute(ParameterInfo element, Type attributeType) => GetAttr (element, attributeType, true);
  34                 public static Attribute GetCustomAttribute(ParameterInfo element, Type attributeType, bool inherit) => GetAttr (element, attributeType, inherit);
  35
  36                 public static Attribute[] GetCustomAttributes (Assembly element) => (Attribute[])CustomAttribute.GetCustomAttributes (element, true);
  37                 public static Attribute[] GetCustomAttributes (Assembly element, bool inherit) => (Attribute[])CustomAttribute.GetCustomAttributes (element, inherit);
  38                 public static Attribute[] GetCustomAttributes (Assembly element, Type attributeType) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, true);
  39                 public static Attribute[] GetCustomAttributes (Assembly element, Type attributeType, bool inherit) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, inherit);
  40                 public static Attribute[] GetCustomAttributes (MemberInfo element) => (Attribute[])CustomAttribute.GetCustomAttributes (element, true);
  41                 public static Attribute[] GetCustomAttributes (MemberInfo element, bool inherit) => (Attribute[])CustomAttribute.GetCustomAttributes (element, inherit);
  42                 public static Attribute[] GetCustomAttributes (MemberInfo element, Type attributeType) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, true);
  43                 public static Attribute[] GetCustomAttributes (MemberInfo element, Type attributeType, bool inherit) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, inherit);
  44                 public static Attribute[] GetCustomAttributes (Module element) => (Attribute[])CustomAttribute.GetCustomAttributes (element, true);
  45                 public static Attribute[] GetCustomAttributes (Module element, bool inherit) => (Attribute[])CustomAttribute.GetCustomAttributes (element, inherit);
  46                 public static Attribute[] GetCustomAttributes (Module element, Type attributeType) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, true);
  47                 public static Attribute[] GetCustomAttributes (Module element, Type attributeType, bool inherit) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, inherit);
  48                 public static Attribute[] GetCustomAttributes (ParameterInfo element) => (Attribute[])CustomAttribute.GetCustomAttributes (element, true);
  49                 public static Attribute[] GetCustomAttributes (ParameterInfo element, bool inherit) => (Attribute[])CustomAttribute.GetCustomAttributes (element, inherit);
  50                 public static Attribute[] GetCustomAttributes (ParameterInfo element, Type attributeType) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, true);
  51                 public static Attribute[] GetCustomAttributes (ParameterInfo element, Type attributeType, bool inherit) => (Attribute[])GetCustomAttributes ((ICustomAttributeProvider)element, attributeType, inherit);
  52
  53                 internal static Attribute[] GetCustomAttributes (ICustomAttributeProvider element, Type attributeType, bool inherit)
  54                 {
  55                         if (attributeType == null)
  56                                 throw new ArgumentNullException (nameof (attributeType));
  57                         if (!attributeType.IsSubclassOf (typeof (Attribute)) && attributeType != typeof (Attribute))
  58                                 throw new ArgumentException (SR.Argument_MustHaveAttributeBaseClass + " " + attributeType.FullName);
  59
  60                         return (Attribute[])CustomAttribute.GetCustomAttributes (element, attributeType, inherit);
  61                 }
  62
  63                 public static bool IsDefined (Assembly element, Type attributeType) => IsDefined ((ICustomAttributeProvider)element, attributeType, true);
  64                 public static bool IsDefined (Assembly element, Type attributeType, bool inherit) => IsDefined ((ICustomAttributeProvider)element, attributeType, inherit);
  65                 public static bool IsDefined (MemberInfo element, Type attributeType) => IsDefined ((ICustomAttributeProvider)element, attributeType, true);
  66                 public static bool IsDefined (MemberInfo element, Type attributeType, bool inherit) => IsDefined ((ICustomAttributeProvider)element, attributeType, inherit);
  67                 public static bool IsDefined (Module element, Type attributeType) => IsDefined ((ICustomAttributeProvider)element, attributeType, true);
  68                 public static bool IsDefined (Module element, Type attributeType, bool inherit) => IsDefined ((ICustomAttributeProvider)element, attributeType, inherit);
  69                 public static bool IsDefined (ParameterInfo element, Type attributeType) => IsDefined ((ICustomAttributeProvider)element, attributeType, true);
  70                 public static bool IsDefined (ParameterInfo element, Type attributeType, bool inherit) => IsDefined ((ICustomAttributeProvider)element, attributeType, inherit);
  71
  72                 internal static bool IsDefined (ICustomAttributeProvider element, Type attributeType, bool inherit)
  73                 {
  74                         if (attributeType == null)
  75                                 throw new ArgumentNullException (nameof (attributeType));
  76                         if (!attributeType.IsSubclassOf (typeof (Attribute)) && attributeType != typeof (Attribute))
  77                                 throw new ArgumentException (SR.Argument_MustHaveAttributeBaseClass + " " + attributeType.FullName);
  78
  79                         return CustomAttribute.IsDefined (element, attributeType, inherit);
  80                 }
  81         }
  82 }