public static object GetDefaultValue(this Type t)
{
Debug.Assert(t != typeof(void));
return
(t.IsPointer ? IntPtr.Zero
: t.IsValueType && t != typeof(void) ? MockingUtil.CreateInstance(t)
: null);
}
public static object CreateObject(this Type type, object[] args)
{
args = args ?? NoObjects;
var constructorInfos = type.GetConstructors(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
if (constructorInfos.Length == 0 || (type.IsValueType && args.Length == 0))
{
if (args.Length > 0)
{
throw new MockException("Type has no non-default constructors.");
}
return(type.GetDefaultValue());
}
object state;
var ctor = (ConstructorInfo)MockingUtil.BindToMethod(MockingUtil.Default,
constructorInfos, ref args, null, null, null, out state);
var ctorParameters = ctor.GetParameters();
for (int i = 0; i < ctorParameters.Length; ++i)
{
var paramType = ctorParameters[i].ParameterType;
if (paramType.IsValueType && args[i] == null)
{
args[i] = paramType.GetDefaultValue();
}
else if (args[i] != null && !paramType.IsAssignableFrom(args[i].GetType()))
{
args[i] = Convert.ChangeType(args[i], paramType, System.Globalization.CultureInfo.CurrentCulture);
}
}
#if !PORTABLE
var newCall = MockingUtil.CreateDynamicMethod <Func <object[], object> >(il =>
{
il.UnpackArgArray(OpCodes.Ldarg_0, ctor);
il.PushArgArray(ctor);
il.Emit(OpCodes.Newobj, ctor);
if (type.IsValueType)
{
il.Emit(OpCodes.Box, type);
}
il.Emit(OpCodes.Ret);
});
return(ProfilerInterceptor.GuardExternal(() =>
{
try
{
return newCall(args);
}
catch (MemberAccessException ex)
{
GC.KeepAlive(ex);
return MockingUtil.CreateInstance(type, args);
}
}));
#else
return(MockingUtil.CreateInstance(type, args));
#endif
}
