1 files changed, 140 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/ApplicationId.cs b/src/mscorlib/src/System/ApplicationId.cs
new file mode 100644
index 0000000000..78151a7eb1
--- /dev/null
+++ b/src/mscorlib/src/System/ApplicationId.cs
@@ -0,0 +1,140 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+//
+//
+// This class identifies a deployment or manifest identity.
+//
+
+namespace System {
+    using System.Reflection;
+    using System.Security;
+    using System.Security.Policy;
+    using System.Security.Util;
+    using System.Text;
+    using System.Diagnostics.Contracts;
+
+    [Serializable]
+    [System.Runtime.InteropServices.ComVisible(true)]
+    public sealed class ApplicationId {
+        private string m_name;
+        private Version m_version;
+        private string m_processorArchitecture;
+        private string m_culture;
+        internal byte[] m_publicKeyToken;
+
+        internal ApplicationId () {}
+
+        //
+        // Public.
+        //
+
+        public ApplicationId (byte[] publicKeyToken, string name, Version version, string processorArchitecture, string culture) {
+            if (name == null)
+                throw new ArgumentNullException("name");
+            if (name.Length == 0)
+                throw new ArgumentException(Environment.GetResourceString("Argument_EmptyApplicationName"));
+            if (version == null)
+                throw new ArgumentNullException("version");
+            if (publicKeyToken == null)
+                throw new ArgumentNullException("publicKeyToken");
+            Contract.EndContractBlock();
+
+            m_publicKeyToken = new byte[publicKeyToken.Length];
+            Array.Copy(publicKeyToken, 0, m_publicKeyToken, 0, publicKeyToken.Length);
+            m_name = name;
+            m_version = version;
+            m_processorArchitecture = processorArchitecture;
+            m_culture = culture;
+        }
+
+        public byte[] PublicKeyToken {
+            get {
+                byte[] publicKeyToken = new byte[m_publicKeyToken.Length];
+                Array.Copy(m_publicKeyToken, 0, publicKeyToken, 0, m_publicKeyToken.Length);
+                return publicKeyToken;
+            }
+        }
+
+        public string Name {
+            get {
+                return m_name;
+            }
+        }
+
+        public Version Version {
+            get {
+                return m_version;
+            }
+        }
+
+        public string ProcessorArchitecture {
+            get {
+                return m_processorArchitecture;
+            }
+        }
+
+        public string Culture {
+            get {
+                return m_culture;
+            }
+        }
+
+        public ApplicationId Copy () {
+            return new ApplicationId(m_publicKeyToken, m_name, m_version, m_processorArchitecture, m_culture);
+        }
+
+        public override string ToString () {
+            StringBuilder sb = StringBuilderCache.Acquire();
+            sb.Append(this.m_name);
+            if (m_culture != null) {
+                sb.Append(", culture=\"");
+                sb.Append(m_culture);
+                sb.Append("\"");
+            }
+            sb.Append(", version=\"");
+            sb.Append(m_version.ToString());
+            sb.Append("\"");
+            if (m_publicKeyToken != null) {
+                sb.Append(", publicKeyToken=\"");
+                sb.Append(Hex.EncodeHexString(m_publicKeyToken));
+                sb.Append("\"");
+            }
+            if (m_processorArchitecture != null) {
+                sb.Append(", processorArchitecture =\"");
+                sb.Append(this.m_processorArchitecture);
+                sb.Append("\"");
+            }
+            return StringBuilderCache.GetStringAndRelease(sb);
+        }
+
+        public override bool Equals (Object o) {
+            ApplicationId other = (o as ApplicationId);
+            if (other == null)
+                return false;
+
+            if (!(Equals(this.m_name, other.m_name) &&
+                  Equals(this.m_version, other.m_version) &&
+                  Equals(this.m_processorArchitecture, other.m_processorArchitecture) &&
+                  Equals(this.m_culture, other.m_culture)))
+                return false;
+
+            if (this.m_publicKeyToken.Length != other.m_publicKeyToken.Length)
+                return false;
+
+            for (int i = 0; i < this.m_publicKeyToken.Length; ++i) {
+                if (this.m_publicKeyToken[i] != other.m_publicKeyToken[i])
+                    return false;
+            }
+
+            return true;
+        }
+
+        public override int GetHashCode() {
+            // Note: purposely skipping publicKeyToken, processor architecture and culture as they
+            // are less likely to make things not equal than name and version.
+            return m_name.GetHashCode() ^ m_version.GetHashCode();
+        }
+    }
+}