1 /* ****************************************************************************
3 * Copyright (c) Microsoft Corporation.
5 * This source code is subject to terms and conditions of the Microsoft Public License. A
6 * copy of the license can be found in the License.html file at the root of this distribution. If
7 * you cannot locate the Microsoft Public License, please send an email to
8 * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
9 * by the terms of the Microsoft Public License.
11 * You must not remove this notice, or any other, from this software.
14 * ***************************************************************************/
15 using System; using Microsoft;
19 using System.Dynamic.Utils;
21 using Microsoft.Scripting.Utils;
23 using System.Reflection;
24 using System.Reflection.Emit;
27 namespace System.Linq.Expressions.Compiler {
29 namespace Microsoft.Linq.Expressions.Compiler {
31 internal static partial class DelegateHelpers {
32 private const MethodAttributes CtorAttributes = MethodAttributes.RTSpecialName | MethodAttributes.HideBySig | MethodAttributes.Public;
33 private const MethodImplAttributes ImplAttributes = MethodImplAttributes.Runtime | MethodImplAttributes.Managed;
34 private const MethodAttributes InvokeAttributes = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.Virtual;
35 private static readonly Type[] _DelegateCtorSignature = new Type[] { typeof(object), typeof(IntPtr) };
37 private static Type MakeNewCustomDelegate(Type[] types) {
38 Type returnType = types[types.Length - 1];
39 Type[] parameters = types.RemoveLast();
41 TypeBuilder builder = AssemblyGen.DefineDelegateType("Delegate" + types.Length);
42 builder.DefineConstructor(CtorAttributes, CallingConventions.Standard, _DelegateCtorSignature).SetImplementationFlags(ImplAttributes);
43 builder.DefineMethod("Invoke", InvokeAttributes, returnType, parameters).SetImplementationFlags(ImplAttributes);
44 return builder.CreateType();