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Add static method support to ClassDB

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* Based on the work done for Variant in the past.
* Added `ClassDB::bind_static_method`
* Cleaned up ClassDB::bind_method to use variadic templates.

This adds support for having static methods in Object derived classes.
Note that this does not make it work yet in GDScript or Mono and, while it works for GDExtension, GodotCPP needs to be updated.
This commit is contained in:
reduz
2022-03-19 13:18:52 +01:00
parent 81c2d7a82a
commit 2f651277da
7 changed files with 168 additions and 72 deletions
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84
core/object/class_db.h
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@@ -227,75 +227,27 @@ public:
static uint64_t get_api_hash(APIType p_api);
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method) {
template <class N, class M, typename... VarArgs>
static MethodBind *bind_method(N p_method_name, M p_method, VarArgs... p_args) {
Variant args[sizeof...(p_args) + 1] = { p_args..., Variant() }; // +1 makes sure zero sized arrays are also supported.
const Variant *argptrs[sizeof...(p_args) + 1];
for (uint32_t i = 0; i < sizeof...(p_args); i++) {
argptrs[i] = &args[i];
}
MethodBind *bind = create_method_bind(p_method);
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, nullptr, 0); //use static function, much smaller binary usage
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, sizeof...(p_args) == 0 ? nullptr : (const Variant **)argptrs, sizeof...(p_args));
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[1] = { &p_def1 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 1);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[2] = { &p_def1, &p_def2 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 2);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[3] = { &p_def1, &p_def2, &p_def3 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 3);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[4] = { &p_def1, &p_def2, &p_def3, &p_def4 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 4);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[5] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 5);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5, const Variant &p_def6) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[6] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 6);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5, const Variant &p_def6, const Variant &p_def7) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[7] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6, &p_def7 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 7);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5, const Variant &p_def6, const Variant &p_def7, const Variant &p_def8) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[8] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6, &p_def7, &p_def8 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 8);
template <class N, class M, typename... VarArgs>
static MethodBind *bind_static_method(const StringName &p_class, N p_method_name, M p_method, VarArgs... p_args) {
Variant args[sizeof...(p_args) + 1] = { p_args..., Variant() }; // +1 makes sure zero sized arrays are also supported.
const Variant *argptrs[sizeof...(p_args) + 1];
for (uint32_t i = 0; i < sizeof...(p_args); i++) {
argptrs[i] = &args[i];
}
MethodBind *bind = create_static_method_bind(p_method);
bind->set_instance_class(p_class);
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, sizeof...(p_args) == 0 ? nullptr : (const Variant **)argptrs, sizeof...(p_args));
}
template <class M>