From 05aa51bba3ed2b7d6d6ab75f48a98a62ea962925 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Sim=C3=B5es?=
 <josesimoes@users.noreply.github.com>
Date: Fri, 28 Sep 2018 09:58:39 +0100
Subject: [PATCH] Add GetCustomAttributes method to MemberInfo and derived
 classes (#27)

---
 source/System/Reflection/ConstructorInfo.cs   | 12 +++++++++++-
 source/System/Reflection/FieldInfo.cs         | 13 ++++++++++++-
 source/System/Reflection/MemberInfo.cs        |  7 +++++++
 source/System/Reflection/RuntimeMethodInfo.cs |  3 +++
 source/System/RuntimeType.cs                  |  2 ++
 5 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/source/System/Reflection/ConstructorInfo.cs b/source/System/Reflection/ConstructorInfo.cs
index 36a21b5e..ecc28ffd 100644
--- a/source/System/Reflection/ConstructorInfo.cs
+++ b/source/System/Reflection/ConstructorInfo.cs
@@ -6,8 +6,8 @@
 
 namespace System.Reflection
 {
-    using System;
     using Runtime.CompilerServices;
+    using System;
 
     /// <summary>
     /// Discovers the attributes of a class constructor and provides access to constructor metadata.
@@ -38,5 +38,15 @@ public override MemberTypes MemberType
         [Diagnostics.DebuggerHidden]
         [MethodImpl(MethodImplOptions.InternalCall)]
         public extern Object Invoke(Object[] parameters);
+
+        /// <summary>
+        /// When overridden in a derived class, returns an array of all custom attributes applied to this member.
+        /// </summary>
+        /// <param name="inherit">true to search this member's inheritance chain to find the attributes; otherwise, false. This parameter is ignored for properties and events.</param>
+        /// <returns>An array that contains all the custom attributes applied to this member, or an array with zero elements if no attributes are defined.</returns>
+        /// <remarks>This method is not implemented in nanoFramework.</remarks>
+        /// <exception cref="NotImplementedException"/>
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public extern override object[] GetCustomAttributes(bool inherit);
     }
 }
diff --git a/source/System/Reflection/FieldInfo.cs b/source/System/Reflection/FieldInfo.cs
index b42cae4a..1668b6cb 100644
--- a/source/System/Reflection/FieldInfo.cs
+++ b/source/System/Reflection/FieldInfo.cs
@@ -6,8 +6,8 @@
 
 namespace System.Reflection
 {
-    using System;
     using Runtime.CompilerServices;
+    using System;
 
     /// <summary>
     /// Discovers the attributes of a field and provides access to field metadata.
@@ -59,6 +59,17 @@ public abstract Type FieldType
         [Diagnostics.DebuggerHidden]
         [MethodImpl(MethodImplOptions.InternalCall)]
         public virtual extern void SetValue(Object obj, Object value);
+
+        /// <summary>
+        /// When overridden in a derived class, returns an array of all custom attributes applied to this member.
+        /// </summary>
+        /// <param name="inherit">true to search this member's inheritance chain to find the attributes; otherwise, false. This parameter is ignored for properties and events.</param>
+        /// <returns>An array that contains all the custom attributes applied to this member, or an array with zero elements if no attributes are defined.</returns>
+        /// <remarks>This method is not implemented in nanoFramework.</remarks>
+        /// <exception cref="NotImplementedException">This method is not implemente.</exception>
+        /// <exception cref="NotImplementedException"/>
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public extern override object[] GetCustomAttributes(bool inherit);
     }
 }
 
diff --git a/source/System/Reflection/MemberInfo.cs b/source/System/Reflection/MemberInfo.cs
index 17f50cf8..9532642a 100644
--- a/source/System/Reflection/MemberInfo.cs
+++ b/source/System/Reflection/MemberInfo.cs
@@ -46,5 +46,12 @@ public abstract Type DeclaringType
         {
             get;
         }
+
+        /// <summary>
+        /// When overridden in a derived class, returns an array of all custom attributes applied to this member.
+        /// </summary>
+        /// <param name="inherit">true to search this member's inheritance chain to find the attributes; otherwise, false. This parameter is ignored for properties and events.</param>
+        /// <returns>An array that contains all the custom attributes applied to this member, or an array with zero elements if no attributes are defined.</returns>
+        public abstract object[] GetCustomAttributes(bool inherit);
     }
 }
diff --git a/source/System/Reflection/RuntimeMethodInfo.cs b/source/System/Reflection/RuntimeMethodInfo.cs
index bf006f8b..33e16f22 100644
--- a/source/System/Reflection/RuntimeMethodInfo.cs
+++ b/source/System/Reflection/RuntimeMethodInfo.cs
@@ -17,5 +17,8 @@ public override extern Type ReturnType
             [MethodImpl(MethodImplOptions.InternalCall)]
             get;
         }
+        
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public override extern object[] GetCustomAttributes(bool inherit);
     }
 }
diff --git a/source/System/RuntimeType.cs b/source/System/RuntimeType.cs
index 52f58859..89f44092 100644
--- a/source/System/RuntimeType.cs
+++ b/source/System/RuntimeType.cs
@@ -80,5 +80,7 @@ public override extern Type BaseType
         [MethodImpl(MethodImplOptions.InternalCall)]
         public override extern Type GetElementType();
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public override extern object[] GetCustomAttributes(bool inherit);
     }
 }