Add support for function deprecation.

Source/Bind/GL2/Generator.cs

@@ -162,6 +162,11 @@ namespace Bind.GL2
                             case "category":
                                 d.Category = words[1];
                                 break;
+
+                            case "deprecated":
+                                d.Deprecated = true;
+                                d.DeprecatedVersion = words[1];
+                                break;
                         }
                     }
                     while (!specFile.EndOfStream);
@@ -709,10 +714,16 @@ namespace Bind.GL2
 
         private static void WriteMethod(BindStreamWriter sw, Function f)
         {
+            if (f.Deprecated && Settings.IsEnabled(Settings.Legacy.AddDeprecationWarnings))
+            {
+                sw.WriteLine("[Obsolete(\"Deprecated in OpenGL {0}\")]", f.DeprecatedVersion);
+            }
+
             if (!f.CLSCompliant)
             {
                 sw.WriteLine("[System.CLSCompliant(false)]");
             }
+            
             sw.WriteLine("[AutoGenerated(Category = \"{0}\", Version = \"{1}\", EntryPoint = \"{2}\")]",
                 f.Category, f.Version, Settings.FunctionPrefix + f.WrappedDelegate.Name);
             sw.WriteLine("public static ");

Source/Bind/Generator.Bind.csproj

@@ -139,6 +139,7 @@
     <Compile Include="..\GlobalAssemblyInfo.cs">
       <Link>Properties\GlobalAssemblyInfo.cs</Link>
     </Compile>
+    <Compile Include="GL2\GL4Generator.cs" />
     <Compile Include="IBind.cs">
       <SubType>Code</SubType>
     </Compile>

Source/Bind/Settings.cs

@@ -127,6 +127,8 @@ namespace Bind
             NoDebugHelpers = 0x800,
             /// <summary>Generate both typed and untyped ("All") signatures for enum parameters.</summary>
             KeepUntypedEnums = 0x1000,
+            /// <summary>Marks deprecated functions as [Obsolete]</summary>
+            AddDeprecationWarnings = 0x2000,
             Tao = ConstIntEnums |
                   NoAdvancedEnumProcessing |
                   NoPublicUnsafeFunctions |
@@ -142,6 +144,24 @@ namespace Bind
                   /*GenerateAllPermutations,*/
         }
 
+        // Returns true if flag is enabled.
+        public static bool IsEnabled(Legacy flag)
+        {
+            return (Compatibility & flag) != (Legacy)0;
+        }
+
+        // Enables the specified flag.
+        public static void Enable(Legacy flag)
+        {
+            Compatibility |= flag;
+        }
+
+        // Disables the specified flag.
+        public static void Disable(Legacy flag)
+        {
+            Compatibility &= ~flag;
+        }
+
         /// <summary>True if multiple tokens should be dropped (e.g. FooARB, FooEXT and FooSGI).</summary>
         public static bool DropMultipleTokens
         { 

Source/Bind/Structures/Delegate.cs

@@ -79,6 +79,8 @@ namespace Bind.Structures
             ReturnType = new Type(d.ReturnType);
             Version = d.Version;
             //this.Version = !String.IsNullOrEmpty(d.Version) ? new string(d.Version.ToCharArray()) : "";
+            Deprecated = d.Deprecated;
+            DeprecatedVersion = d.DeprecatedVersion;
         }
 
         #endregion
@@ -277,6 +279,9 @@ namespace Bind.Structures
 
         #endregion
 
+        public bool Deprecated { get; set; }
+        public string DeprecatedVersion { get; set; }
+
         #endregion
 
         #region --- Strings ---