java.cpp

#include "example/ExampleClass.jh"
#include <iostream>
#include "J/Ref.hpp"
#include "J/Method.hpp"
#include "J/Tags.hpp"

using namespace J::tag;

void test(java::lang::Object& obj) {
    std::cout << "[Hash " << obj.hashCode() << "]\n";
}

namespace J {
    namespace tag {
        struct ExampleClass : public java::lang::Object {
            static constexpr const char* signature = "LExampleClass;";

            J_FIELD(int, bar);
            J_FIELD(java::lang::String, qux);

            J_METHOD(void(), speak);
            J_METHOD(ExampleClass(), get_self);
            J_METHOD(void(java::lang::String), say_something);

            ExampleClass(JNIEnv* env, jobject obj) : Object(env, obj) {
            }

			void foo() {
				say_something(qux);
				say_something({environment, "testicles"});
				test(*this);
			}
        };
    }
}

JNIEXPORT void JNICALL Java_ExampleClass_foo(JNIEnv* env, jobject obj) {
    auto example = J::tag::ExampleClass(env, obj);
	example.foo();
}