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#pragma once
#include <concepts>
#include <initializer_list>
#include <string_view>
#include <type_traits>
#include <godot_cpp/core/class_db.hpp>
#include <godot_cpp/variant/string_name.hpp>
#include "openvic-extension/utility/StringLiteral.hpp"
namespace godot {
class Object;
}
#define OV_BIND_METHOD(Function, ...) \
::OpenVic::detail::bind_method<::OpenVic::detail::get_function_name<#Function>()>(&Function __VA_OPT__(, ) __VA_ARGS__)
#define OV_BIND_SMETHOD(Function, ...) \
::OpenVic::detail::bind_static_method<::OpenVic::detail::get_function_name<#Function>()>( \
get_class_static(), &Function __VA_OPT__(, ) __VA_ARGS__ \
)
#define OV_BIND_SMETHOD_T(ClassType, Function, ...) \
::OpenVic::detail::bind_static_method<ClassType, ::OpenVic::detail::get_function_name<#Function>()>( \
&Function __VA_OPT__(, ) __VA_ARGS__ \
)
namespace OpenVic::detail {
template<typename Func>
concept IsFunctionPointer = std::is_function_v<std::remove_pointer_t<Func>>;
template<typename Func>
concept IsMemberFunctionPointer = std::is_member_function_pointer_v<Func>;
template<StringLiteral In>
consteval auto get_function_name() {
constexpr auto result = [] {
constexpr auto prefix = std::string_view { "::" };
constexpr std::string_view in_sv = In;
constexpr auto start = in_sv.find_last_of(prefix);
if constexpr (start == std::string_view::npos) {
return In;
} else {
constexpr auto result = in_sv.substr(start + 1);
return StringLiteral<result.size()> { result };
}
}();
return result;
}
template<StringLiteral Name, IsMemberFunctionPointer Func, typename... DefaultsT>
void bind_method(Func func, std::initializer_list<godot::StringName> arg_names, DefaultsT&&... defaults) {
godot::MethodDefinition definition { Name.data() };
definition.args = { arg_names };
godot::ClassDB::bind_method(definition, func, defaults...);
}
template<StringLiteral Name, IsMemberFunctionPointer Func, typename... DefaultsT>
void bind_method(Func func, DefaultsT&&... defaults) {
bind_method<Name, Func>(func, {}, defaults...);
}
template<StringLiteral Name, IsFunctionPointer Func, typename... DefaultsT>
void bind_static_method(
godot::StringName class_name, Func func, std::initializer_list<godot::StringName> arg_names, DefaultsT&&... defaults
) {
godot::MethodDefinition definition { Name.data() };
definition.args = { arg_names };
godot::ClassDB::bind_static_method(class_name, definition, func, defaults...);
}
template<StringLiteral Name, IsFunctionPointer Func, typename... DefaultsT>
void bind_static_method(godot::StringName class_name, Func func, DefaultsT&&... defaults) {
bind_static_method<Name>(class_name, func, {}, defaults...);
}
template<std::derived_from<godot::Object> ClassT, StringLiteral Name, IsFunctionPointer Func, typename... DefaultsT>
void bind_static_method(Func func, std::initializer_list<godot::StringName> arg_names, DefaultsT&&... defaults) {
bind_static_method<Name>(ClassT::get_class_static(), func, arg_names, defaults...);
}
template<std::derived_from<godot::Object> ClassT, StringLiteral Name, IsFunctionPointer Func, typename... DefaultsT>
void bind_static_method(Func func, DefaultsT&&... defaults) {
bind_static_method<ClassT, Name>(func, {}, defaults...);
}
}
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