mono/mcs/class/System.ServiceModel/Mono.CodeGeneration/CodeReturn.cs

//
// 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.
//
// Copyright (C) Lluis Sanchez Gual, 2004
//

using System;
using System.Reflection;
using System.Reflection.Emit;

namespace Mono.CodeGeneration
{
	public class CodeReturn: CodeStatement
	{
		CodeExpression retValue;
		CodeBuilder codeBuilder;
		
		internal CodeReturn (CodeBuilder codeBuilder, CodeExpression retValue)
		{
			this.codeBuilder = codeBuilder;
			this.retValue = retValue;
		}
		
		internal CodeReturn (CodeBuilder codeBuilder)
		{
			this.codeBuilder = codeBuilder;
		}
		
		public override void Generate (ILGenerator gen)
		{
			if (!object.ReferenceEquals (retValue, null))
				retValue.Generate (gen);

			gen.Emit (OpCodes.Br, codeBuilder.ReturnLabel);
		}
		
		public override void PrintCode (CodeWriter cp)
		{
			if (object.ReferenceEquals (retValue, null))
				cp.Write ("return");
			else {
				cp.Write ("return ");
				retValue.PrintCode (cp);
			}
		}
	}
}