Interest for registration of template types? about ponder

[billyquith]

You can use PONDER_TYPE() for this purpose. You have to explicitly declare the type. There is no "auto" version. This macro works with any number of parameters.

I could perhaps make this more prominent in the docs.

[lhamot]

Thank you for your answer.

With PONDER_TYPE(), I have to call it once by concrete type, isn't it?
For example:

PONDER_TYPE(TmplStruct<int>);
PONDER_TYPE(TmplStruct<short>);
PONDER_TYPE(TmplStruct<bool>);
// Have to explicitely call :
static void declare_TmplStruct(){
    ponder::Class::declare<TmplStruct<int> >()
        .property("field1", &TmplStruct<int>::field1);
    ponder::Class::declare<TmplStruct<short> >()
        .property("field1", &TmplStruct<short>::field1);
    ponder::Class::declare<TmplStruct<bool> >()
        .property("field1", &TmplStruct<bool>::field1);
}

Is there an other way to use PONDER_TYPE ?

What I am looking for is a way to avoid to declare each concrete types. Types which are referenced from a .property call could be automatically declared, I guess.
Anyway, I will look at the doc carefully.

[billyquith]

Yes, as it stands you'd have to register once for each template instance, because each instance is a different type. I'm reluctant to add macros to the API to solve this because they would only solve one particular problem, and there are many ways in which templates could be used. Also, I don't really like macros because they make code opaque.

Another alternative:

PONDER_TYPE(TmplStruct<int>);
PONDER_TYPE(TmplStruct<short>);
PONDER_TYPE(TmplStruct<bool>);

template <typename T>
static void declare_TmplStruct() {
    ponder::Class::declare<TmplStruct<T> >()
        .property("field1", &TmplStruct<T>::field1);
}

static declare() {
	declare_TmplStruct<int>();
	declare_TmplStruct<short>();
	declare_TmplStruct<bool>();
}

Ideally I'd like to keep the API as simple as possible. I could add more examples like this to the docs.

[billyquith]

I added an example in the docs. I'll close this unless there are further questions.