public IndirectReference(TypeReference byRefReference) :
base(byRefReference, byRefReference.Type.GetElementType())
{
if (!byRefReference.Type.IsByRef)
{
throw new ArgumentException("Expected an IsByRef reference", "byRefReference");
}
}
// TODO: Better name
public static TypeReference[] WrapIfByRef(TypeReference[] references)
{
TypeReference[] result = new TypeReference[references.Length];
for(int i = 0; i < references.Length; i++)
{
result[i] = WrapIfByRef(references[i]);
}
return result;
}
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 (int i = 0; i < parameters.Length; i++)
{
if (!parameters[i].ParameterType.IsByRef) continue;
emitter.CodeBuilder.AddStatement(AssignArgument(dereferencedArguments, i, arguments));
}
}
private Expression[] GetCtorArguments(ClassEmitter @class, INamingScope namingScope, Expression proxiedMethodTokenExpression, TypeReference[] dereferencedArguments)
{
var selector = @class.GetField("__selector");
if (selector != null)
{
return new[]
{
getTargetExpression(@class, MethodToOverride),
SelfReference.Self.ToExpression(),
interceptors.ToExpression(),
proxiedMethodTokenExpression,
new ReferencesToObjectArrayExpression(dereferencedArguments),
selector.ToExpression(),
new AddressOfReferenceExpression(BuildMethodInterceptorsField(@class, MethodToOverride, namingScope))
};
}
return new[]
{
getTargetExpression(@class, MethodToOverride),
SelfReference.Self.ToExpression(),
interceptors.ToExpression(),
proxiedMethodTokenExpression,
new ReferencesToObjectArrayExpression(dereferencedArguments)
};
}
private static AssignStatement AssignArgument(TypeReference[] dereferencedArguments, int i,
LocalReference invocationArgs)
{
return new AssignStatement(dereferencedArguments[i], Argument(i, invocationArgs, dereferencedArguments));
}
private static ConvertExpression Argument(int i, LocalReference invocationArgs, TypeReference[] arguments)
{
return new ConvertExpression(arguments[i].Type, new LoadRefArrayElementExpression(i, invocationArgs));
}
// TODO: Better name
public static TypeReference WrapIfByRef(TypeReference reference)
{
return reference.Type.IsByRef ? new IndirectReference(reference) : reference;
}
private static void CopyOutAndRefParameters(
TypeReference[] dereferencedArguments, LocalReference invocationImplLocal, MethodInfo method,
MethodEmitter methodEmitter)
{
ParameterInfo[] parameters = method.GetParameters();
bool hasByRefParam = false;
for(int i = 0; i < parameters.Length; i++)
{
if (parameters[i].ParameterType.IsByRef)
hasByRefParam = true;
}
if (!hasByRefParam)
return; //saving the need to create locals if there is no need
LocalReference invocationArgs = methodEmitter.CodeBuilder.DeclareLocal(typeof(object[]));
methodEmitter.CodeBuilder.AddStatement(
new AssignStatement(invocationArgs,
new MethodInvocationExpression(invocationImplLocal, invocation_getArgumentsMethod)
)
);
for(int i = 0; i < parameters.Length; i++)
{
if (parameters[i].ParameterType.IsByRef)
{
methodEmitter.CodeBuilder.AddStatement(
new AssignStatement(dereferencedArguments[i],
new ConvertExpression(dereferencedArguments[i].Type,
new LoadRefArrayElementExpression(i, invocationArgs)
)
));
}
}
}
private Expression[] GetCtorArguments(ClassEmitter @class, Expression proxiedMethodTokenExpression, TypeReference[] dereferencedArguments, Expression methodInterceptors)
{
return new[]
{
getTargetExpression(@class, MethodToOverride),
SelfReference.Self.ToExpression(),
methodInterceptors ?? interceptors.ToExpression(),
proxiedMethodTokenExpression,
new ReferencesToObjectArrayExpression(dereferencedArguments)
};
}
