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GeneratorUtil.cs
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GeneratorUtil.cs
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// Copyright 2004-2011 Castle Project - http://www.castleproject.org/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
namespace Castle.DynamicProxy.Generators
{
using System.Reflection;
using Castle.DynamicProxy.Generators.Emitters;
using Castle.DynamicProxy.Generators.Emitters.SimpleAST;
using Castle.DynamicProxy.Tokens;
public static class GeneratorUtil
{
public static void CopyOutAndRefParameters(TypeReference[] dereferencedArguments, LocalReference invocation,
MethodInfo method, MethodEmitter emitter)
{
var parameters = method.GetParameters();
if (!ArgumentsUtil.IsAnyByRef(parameters))
{
return; //saving the need to create locals if there is no need
}
var arguments = StoreInvocationArgumentsInLocal(emitter, invocation);
for (var i = 0; i < parameters.Length; i++)
{
if (!parameters[i].ParameterType.IsByRef)
{
continue;
}
emitter.CodeBuilder.AddStatement(AssignArgument(dereferencedArguments, i, arguments));
}
}
private static ConvertExpression Argument(int i, LocalReference invocationArgs, TypeReference[] arguments)
{
return new ConvertExpression(arguments[i].Type, new LoadRefArrayElementExpression(i, invocationArgs));
}
private static AssignStatement AssignArgument(TypeReference[] dereferencedArguments, int i,
LocalReference invocationArgs)
{
return new AssignStatement(dereferencedArguments[i], Argument(i, invocationArgs, dereferencedArguments));
}
private static AssignStatement GetArguments(LocalReference invocationArgs, LocalReference invocation)
{
return new AssignStatement(invocationArgs, new MethodInvocationExpression(invocation, InvocationMethods.GetArguments));
}
private static LocalReference StoreInvocationArgumentsInLocal(MethodEmitter emitter, LocalReference invocation)
{
var invocationArgs = emitter.CodeBuilder.DeclareLocal(typeof(object[]));
emitter.CodeBuilder.AddStatement(GetArguments(invocationArgs, invocation));
return invocationArgs;
}
}
}