/// <summary>
/// Returns the IPythonType for a given PythonException in a specified module.
/// Throws KeyNotFoundException it doesn't exist.
/// </summary>
public static IPythonType GetPythonException(string name, string module)
{
IPythonType type;
QualifiedExceptionName key = new QualifiedExceptionName(name, module);
if (nameToPython.TryGetValue(key, out type)) {
return type;
}
throw new KeyNotFoundException("exception " + module + "." + name + " does not exist");
}
/// <summary>
/// Creates and returns the IPythonType for a given PythonException in a given module with a given base type using a given exception creator.
/// Throws InvalidOperationException if it already exists and has a different base type.
///
/// Note that specifying the module doesn't actually place the created type in that module.
/// The type knows about the module, but the module doesn't know about the type. It's the caller's
/// responsibility to put the returned type in the appropriate module.
/// </summary>
public static IPythonType CreatePythonException(string name, string module, IPythonType baseType, ExceptionClassCreator creator)
{
IPythonType type;
QualifiedExceptionName key = new QualifiedExceptionName(name, module);
if (nameToPython.TryGetValue(key, out type)) {
if (Ops.Equals(type.BaseClasses, ObjectToTuple(baseType))) {
return type;
} else {
throw new InvalidOperationException(module + "." + name + " already exists with different base type(s)");
}
}
IPythonType res = creator(name, module, baseType);
nameToPython[key] = res;
return res;
}