mono/mcs/class/corlib/System.Reflection.Emit/EventBuilder.cs

//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

//
// System.Reflection.Emit/EventBuilder.cs
//
// Author:
//   Paolo Molaro ([email protected])
//
// (C) 2001 Ximian, Inc.  http://www.ximian.com
//

using System;
using System.Reflection;
using System.Reflection.Emit;
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace System.Reflection.Emit {
#if NET_2_0
	[ComVisible (true)]
	[ClassInterfaceAttribute (ClassInterfaceType.None)]
	[ComDefaultInterfaceAttribute (typeof (_EventBuilder))]
#endif
	public sealed class EventBuilder {
		string name;
		Type type;
		TypeBuilder typeb;
		CustomAttributeBuilder[] cattrs;
		MethodBuilder add_method;
		MethodBuilder remove_method;
		MethodBuilder raise_method;
		MethodBuilder[] other_methods;
		EventAttributes attrs;
		int table_idx;

		internal EventBuilder (TypeBuilder tb, string eventName, EventAttributes eventAttrs, Type eventType) {
			name = eventName;
			attrs = eventAttrs;
			type = eventType;
			typeb = tb;
			table_idx = get_next_table_index (this, 0x14, true);
		}

		internal int get_next_table_index (object obj, int table, bool inc) {
			return typeb.get_next_table_index (obj, table, inc);
		}

		public void AddOtherMethod( MethodBuilder mdBuilder) {
			if (mdBuilder == null)
				throw new ArgumentNullException ("mdBuilder");
			RejectIfCreated ();
			if (other_methods != null) {
				MethodBuilder[] newv = new MethodBuilder [other_methods.Length + 1];
				other_methods.CopyTo (newv, 0);
				other_methods = newv;
			} else {
				other_methods = new MethodBuilder [1];
			}
			other_methods [other_methods.Length - 1] = mdBuilder;
		}
		
		public EventToken GetEventToken () {
			return new EventToken (0x14000000 | table_idx);
		}
		public void SetAddOnMethod( MethodBuilder mdBuilder) {
			if (mdBuilder == null)
				throw new ArgumentNullException ("mdBuilder");
			RejectIfCreated ();
			add_method = mdBuilder;
		}
		public void SetRaiseMethod( MethodBuilder mdBuilder) {
			if (mdBuilder == null)
				throw new ArgumentNullException ("mdBuilder");
			RejectIfCreated ();
			raise_method = mdBuilder;
		}
		public void SetRemoveOnMethod( MethodBuilder mdBuilder) {
			if (mdBuilder == null)
				throw new ArgumentNullException ("mdBuilder");
			RejectIfCreated ();
			remove_method = mdBuilder;
		}

		public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
			if (customBuilder == null)
				throw new ArgumentNullException ("customBuilder");
			RejectIfCreated ();
			if (cattrs != null) {
				CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
				cattrs.CopyTo (new_array, 0);
				new_array [cattrs.Length] = customBuilder;
				cattrs = new_array;
			} else {
				cattrs = new CustomAttributeBuilder [1];
				cattrs [0] = customBuilder;
			}
		}

#if NET_2_0
		[ComVisible (true)]
#endif
		public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
			if (con == null)
				throw new ArgumentNullException ("con");
			if (binaryAttribute == null)
				throw new ArgumentNullException ("binaryAttribute");
			SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
		}

		private void RejectIfCreated () {
			if (typeb.is_created)
				throw new InvalidOperationException ("Type definition of the method is complete.");
		}
	}
}