private static Func <T, object> CreateMemberGetter(ParameterExpression targetParameter, SerializingMember member)
{
var coreGetter =
Expression.Lambda <Func <T, object> >(
Expression.Convert(
Expression.PropertyOrField(
targetParameter,
member.Member.Name
),
typeof(object)
),
targetParameter
).Compile();
if (member.Contract.NilImplication == NilImplication.Prohibit)
{
var name = member.Contract.Name;
return(target =>
{
var gotten = coreGetter(target);
if (gotten == null)
{
throw SerializationExceptions.NewNullIsProhibited(name);
}
return gotten;
});
}
else
{
return(coreGetter);
}
}
private void UnpackFromMap(Unpacker unpacker, ref object instance)
{
while (unpacker.Read())
{
var memberName = GetMemberName(unpacker);
int index;
if (!this._indexMap.TryGetValue(memberName, out index))
{
// Drains unused value.
if (!unpacker.Read())
{
throw SerializationExceptions.NewUnexpectedEndOfStream();
}
// TODO: unknown member handling.
continue;
}
// Fetches value
if (!unpacker.Read())
{
throw SerializationExceptions.NewUnexpectedEndOfStream();
}
if (unpacker.LastReadData.IsNil)
{
switch (this._nilImplications[index])
{
case NilImplication.Null:
{
this._memberSetters[index](ref instance, null);
continue;
}
case NilImplication.MemberDefault:
{
continue;
}
case NilImplication.Prohibit:
{
throw SerializationExceptions.NewNullIsProhibited(this._memberNames[index]);
}
}
}
if (unpacker.IsArrayHeader || unpacker.IsMapHeader)
{
using (var subtreeUnpacker = unpacker.ReadSubtree())
{
this.UnpackMemberInMap(subtreeUnpacker, ref instance, index);
}
}
else
{
this.UnpackMemberInMap(unpacker, ref instance, index);
}
}
}
private void HandleNilImplication(ref T instance, int index)
{
switch (this._nilImplications[index])
{
case NilImplication.Null:
{
if (this._memberSetters[index] == null)
{
throw SerializationExceptions.NewReadOnlyMemberItemsMustNotBeNull(this._memberNames[index]);
}
this._memberSetters[index](ref instance, null);
break;
}
case NilImplication.MemberDefault:
{
break;
}
case NilImplication.Prohibit:
{
throw SerializationExceptions.NewNullIsProhibited(this._memberNames[index]);
}
}
}
protected override Action <object> OnThrowNullIsProhibitedExceptionOnUnpacked(ReflectionSerializerNilImplicationHandlerOnUnpackedParameter parameter)
{
return
(_ =>
{
throw SerializationExceptions.NewNullIsProhibited(parameter.MemberName);
});
}
protected override Action <object> OnPackingCore(ReflectionSerializerNilImplicationHandlerParameter parameter, Func <object, bool> condition)
{
return
(value =>
{
if (condition(value))
{
throw SerializationExceptions.NewNullIsProhibited(parameter.MemberName);
}
});
}
private void HandleNilImplication(ref object instance, int index)
{
switch (this._nilImplications[index])
{
case NilImplication.Null:
{
this._memberSetters[index](ref instance, null);
break;
}
case NilImplication.MemberDefault:
{
break;
}
case NilImplication.Prohibit:
{
throw SerializationExceptions.NewNullIsProhibited(this._memberNames[index]);
}
}
}
private static Func <object, object> CreateMemberGetter(SerializingMember member)
{
Func <object, object> coreGetter;
var fieldInfo = member.Member as FieldInfo;
if (fieldInfo != null)
{
coreGetter = target => fieldInfo.GetValue(target);
}
else
{
var propertyInfo = member.Member as PropertyInfo;
Contract.Assert(propertyInfo != null, member.ToString() + ":" + member.GetType());
var propertyGetterInfo = propertyInfo.GetGetMethod();
coreGetter = target => propertyGetterInfo.Invoke(target, new object[0]);
}
if (member.Contract.NilImplication == NilImplication.Prohibit)
{
var name = member.Contract.Name;
return(target =>
{
var gotten = coreGetter(target);
if (gotten == null)
{
throw SerializationExceptions.NewNullIsProhibited(name);
}
return gotten;
});
}
else
{
return(coreGetter);
}
}
