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throw a runtime error when a wrong type is requested for an option

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This commit is contained in:
Maxime Coste 2013-03-06 14:13:21 +01:00
parent 0e2ba188dc
commit 558f32d2d5
1 changed files with 15 additions and 2 deletions
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17
src/option_manager.cc
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@ -93,8 +93,21 @@ private:
Option::Option(OptionManager& manager, String name)
: m_manager(manager), m_name(std::move(name)) {}
template<typename T> const T& Option::get() const { return dynamic_cast<const TypedOption<T>*>(this)->get(); }
template<typename T> void Option::set(const T& val) { return dynamic_cast<TypedOption<T>*>(this)->set(val); }
template<typename T> const T& Option::get() const
{
auto* typed_opt = dynamic_cast<const TypedOption<T>*>(this);
if (not typed_opt)
throw runtime_error("option " + name() + " is not of type " + typeid(T).name());
return typed_opt->get();
}
template<typename T> void Option::set(const T& val)
{
auto* typed_opt = dynamic_cast<TypedOption<T>*>(this);
if (not typed_opt)
throw runtime_error("option " + name() + " is not of type " + typeid(T).name());
return typed_opt->set(val);
}
template const String& Option::get<String>() const;
template void Option::set<String>(const String&);