Method trait

imperative/src/impl/op_def.cpp:121–129

}

const OpTrait* OpDef::trait() const {
    if (!m_trait) {
        m_trait = OpTrait::find_by_typeinfo(dyn_typeinfo());
        mgb_throw_if(
                !m_trait, MegBrainError, "can not find op_trait by %s",
                dyn_typeinfo()->name);
    }
    return m_trait;
}

const std::string OpDef::scope() const {
    return m_scope;