/// <summary>
/// Stores the <paramref name="param">current parameter value</paramref>
/// into the array of method <paramref name="arguments" />.
/// </summary>
/// <param name="IL">The <see cref="ILProcessor" /> that will be used to create the instructions.</param>
/// <param name="arguments">The local variable that will store the method arguments.</param>
/// <param name="index">The array index that indicates where the parameter value will be stored in the array of arguments.</param>
/// <param name="param">The current argument value being stored.</param>
private static void PushParameter(this ILProcessor IL, int index, VariableDefinition arguments,
ParameterDefinition param)
{
var parameterType = param.ParameterType;
IL.Emit(OpCodes.Ldloc, arguments);
IL.Emit(OpCodes.Ldc_I4, index);
// Zero out the [out] parameters
if (param.IsOut || param.IsByRef())
{
IL.Emit(OpCodes.Ldnull);
IL.Emit(OpCodes.Stelem_Ref);
return;
}
IL.Emit(OpCodes.Ldarg, param);
if (parameterType.IsValueType || parameterType is GenericParameter)
{
IL.Emit(OpCodes.Box, param.ParameterType);
}
IL.Emit(OpCodes.Stelem_Ref);
}
public void ShouldBeAbleToDetermineIfMethodIsByRef()
{
string location = typeof(SampleClassWithByRefMethod).Assembly.Location;
AssemblyDefinition assembly = AssemblyFactory.GetAssembly(location);
ModuleDefinition module = assembly.MainModule;
TypeDefinition targetType = module.GetType("SampleClassWithByRefMethod");
MethodDefinition byRefMethod = targetType.GetMethod("ByRefMethod");
MethodDefinition regularMethod = targetType.GetMethod("NonByRefMethod");
Assert.IsNotNull(assembly);
Assert.IsNotNull(targetType);
Assert.IsNotNull(byRefMethod);
Assert.IsNotNull(regularMethod);
// Test the byref parameter
ParameterDefinition parameter = byRefMethod.Parameters[0];
Assert.IsTrue(parameter.IsByRef());
// Test the non-byref parameter
parameter = regularMethod.Parameters[0];
Assert.IsFalse(parameter.IsByRef());
}