Config: Handle unknown system strings better

Currently, a simple typo in the system name will trigger an assert
message that complains about a "programming error". This is not
user friendly and misleading.

So this changes GetSystemFromName to return an std::optional, which
allows for callers to check whether the system exists and handle
failures better.
This commit is contained in:
Léo Lam
2017-11-26 18:24:01 +01:00
parent 653977cec7
commit 05c8d229af
4 changed files with 14 additions and 8 deletions

View File

@ -101,15 +101,14 @@ const std::string& GetSystemName(System system)
return system_to_name.at(system);
}
System GetSystemFromName(const std::string& name)
std::optional<System> GetSystemFromName(const std::string& name)
{
const auto system = std::find_if(system_to_name.begin(), system_to_name.end(),
[&name](const auto& entry) { return entry.second == name; });
if (system != system_to_name.end())
return system->first;
_assert_msg_(COMMON, false, "Programming error! Couldn't convert '%s' to system!", name.c_str());
return System::Main;
return {};
}
const std::string& GetLayerName(LayerType layer)