/src/Boo.Lang.Compiler/Steps/ContextAnnotations.cs

#region license
// Copyright (c) 2003, 2004, 2005 Rodrigo B. de Oliveira (rbo@acm.org)
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// 
//     * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//     * Neither the name of Rodrigo B. de Oliveira nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion




using System;

using Boo.Lang.Compiler.Ast;



namespace Boo.Lang.Compiler.Steps

{

	public class ContextAnnotations

	{		

		static object EntryPointKey = new object();

		

		static object AssemblyBuilderKey = new object();



		public static Method GetEntryPoint(CompilerContext context)

		{

			if (null == context)

			{

				throw new ArgumentNullException("context");

			}

			return (Method)context.Properties[EntryPointKey];

		}

		

		public static void SetEntryPoint(CompilerContext context, Method method)

		{

			if (null == method)

			{

				throw new ArgumentNullException("method");

			}

			

			Method current = GetEntryPoint(context);

			if (null != current)

			{

				throw CompilerErrorFactory.MoreThanOneEntryPoint(method);

			}

			context.Properties[EntryPointKey] = method;

		}

		

		public static System.Reflection.Emit.AssemblyBuilder GetAssemblyBuilder(CompilerContext context)

		{

			System.Reflection.Emit.AssemblyBuilder builder = (System.Reflection.Emit.AssemblyBuilder)context.Properties[AssemblyBuilderKey];

			if (null == builder)

			{

				throw CompilerErrorFactory.InvalidAssemblySetUp(context.CompileUnit);

			}

			return builder;

		}

		

		public static void SetAssemblyBuilder(CompilerContext context, System.Reflection.Emit.AssemblyBuilder builder)

		{

			if (null == context)

			{

				throw new ArgumentNullException("context");

			}

			if (null == builder)

			{

				throw new ArgumentNullException("builder");

			}

			context.Properties[AssemblyBuilderKey] = builder;

		}



		private ContextAnnotations()

		{

		}

	}

}