Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/mscorlib/system/consolekeyinfo.cs

@@ -0,0 +1,85 @@
+using System.Diagnostics.Contracts;
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+/*=============================================================================
+**
+** Class: ConsoleKeyInfo
+**
+**
+** Purpose: This value type represents a single key press, with modifier keys
+**          like Alt, Control, and Shift.
+**
+**
+=============================================================================*/
+
+namespace System {
+    [Serializable]
+    public struct ConsoleKeyInfo {
+        private char _keyChar;
+        private ConsoleKey _key;
+        private ConsoleModifiers _mods;    
+
+        public ConsoleKeyInfo(char keyChar, ConsoleKey key, bool shift, bool alt, bool control) {
+            // Limit ConsoleKey values to 0 to 255, but don't check whether the
+            // key is a valid value in our ConsoleKey enum.  There are a few 
+            // values in that enum that we didn't define, and reserved keys 
+            // that might start showing up on keyboards in a few years.
+            if (((int)key) < 0 || ((int)key) > 255)
+                throw new ArgumentOutOfRangeException("key", Environment.GetResourceString("ArgumentOutOfRange_ConsoleKey"));
+            Contract.EndContractBlock();
+
+            _keyChar = keyChar;
+            _key = key;
+            _mods = 0;
+            if (shift)
+                _mods |= ConsoleModifiers.Shift;
+            if (alt)
+                _mods |= ConsoleModifiers.Alt;
+            if (control)
+                _mods |= ConsoleModifiers.Control;
+        }
+
+        public char KeyChar {
+            get { return _keyChar; }
+        }
+
+        public ConsoleKey Key {
+            get { return _key; }
+        }
+
+        public ConsoleModifiers Modifiers {
+            get { return _mods; }
+        }
+
+        public override bool Equals(Object value)
+        {
+            if (value is ConsoleKeyInfo)
+                return Equals((ConsoleKeyInfo)value);
+            else
+                return false;
+        }
+
+        public bool Equals(ConsoleKeyInfo obj)
+        {
+            return obj._keyChar == _keyChar && obj._key == _key && obj._mods == _mods;
+        }
+    
+        public static bool operator ==(ConsoleKeyInfo a, ConsoleKeyInfo b)
+        {
+            return a.Equals(b);
+        }
+        
+        public static bool operator !=(ConsoleKeyInfo a, ConsoleKeyInfo b)
+        {
+            return !(a == b);
+        }
+        
+        public override int GetHashCode()
+        {
+            return (int)_keyChar | (int) _mods;
+        }
+    }
+}