#include "ruby.h"
#include "version.h"

#include "atp_ext.hpp"

using namespace ruby;

namespace ruby_atp {
    VALUE cATP;
}

namespace {

VALUE build_ruby_version() {
    ID const_get = rb_intern("const_get");
    return rb_funcall(rb_cObject, const_get, 1, rb_str_new2("RUBY_VERSION"));
}

} // namespace

extern "C" void Init_atp_ext() {
    using namespace ruby;
    using namespace ruby_atp;

    VALUE interpreter_version = build_ruby_version();

/*
    strcmp(RUBY_VERSION, STR2CSTR(interpreter_version));

        rb_raise(rb_eRuntimeError,
            "Incorrect Ruby version for this extension; expected %s %s",
            RUBY_VERSION, STR2CSTR(interpreter_version));
*/
    if (strcmp(RUBY_VERSION, STR2CSTR(interpreter_version))) {
        rb_raise(rb_eRuntimeError,
            "Incorrect Ruby version for this extension; expected %s %s",
            RUBY_VERSION, STR2CSTR(interpreter_version));
    }

    cATP = rb_define_module("ATP");

    rb_define_module_function(cATP,
        "extension_build_ruby_version", RUBY_METHOD(build_ruby_version), 0);
}