Add enum name lookup method to Java/C# enums

Tested: on Linux for Java and C#

Bug: 15781151
Change-Id: I7cb97bcc01d986cac2b24aaf7cb29521ddaa2f6b

tests/MyGame/Example/Any.cs

@@ -5,8 +5,12 @@ namespace MyGame.Example
 
 public class Any
 {
-  public static byte NONE = 0;
-  public static byte Monster = 1;
+  public static readonly byte NONE = 0;
+  public static readonly byte Monster = 1;
+
+  private static readonly string[] names = { "NONE", "Monster", };
+
+  public static string Name(int e) { return names[e]; }
 };
 
 

tests/MyGame/Example/Any.java

@@ -5,5 +5,9 @@ package MyGame.Example;
 public class Any {
   public static final byte NONE = 0;
   public static final byte Monster = 1;
+
+  private static final String[] names = { "NONE", "Monster", };
+
+  public static String name(int e) { return names[e]; }
 };
 

tests/MyGame/Example/Color.cs

@@ -5,9 +5,13 @@ namespace MyGame.Example
 
 public class Color
 {
-  public static sbyte Red = 1;
-  public static sbyte Green = 2;
-  public static sbyte Blue = 8;
+  public static readonly sbyte Red = 1;
+  public static readonly sbyte Green = 2;
+  public static readonly sbyte Blue = 8;
+
+  private static readonly string[] names = { "Red", "Green", "", "", "", "", "", "Blue", };
+
+  public static string Name(int e) { return names[e - Red]; }
 };
 
 

tests/MyGame/Example/Color.java

@@ -6,5 +6,9 @@ public class Color {
   public static final byte Red = 1;
   public static final byte Green = 2;
   public static final byte Blue = 8;
+
+  private static final String[] names = { "Red", "Green", "", "", "", "", "", "Blue", };
+
+  public static String name(int e) { return names[e - Red]; }
 };