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#ifndef FWCore_ParameterSet_allowedValues_h
#define FWCore_ParameterSet_allowedValues_h
// -*- C++ -*-
//
// Package: ParameterSet
// Function: allowedValues
//
/**\function allowedValues allowedValues.h FWCore/ParameterSet/interface/allowedValues.h
Description: Used to describe the allowed values in a ParameterSet
Usage:
The function is used in conjunction with ParameterSetDescription::ifValue to just constrain the allowed values
and not add additional dependent ParameterSet nodes (which is allowed by ifValue).
\code
edm::ParameterSetDescription psetDesc;
psetDesc.ifValue(edm::ParameterDescription<std::string>("sswitch", "a", true),
edm::allowedValues<std::string>("a", "h", "z") );
\endcode
Implementation Details:
The node associated with each allowed value is the EmptyGroupDescription which is just a dummy place holder.
*/
//
// Original Author: Chris Jones
// Created: Tue Jul 28 15:18:40 EDT 2020
//
#include "FWCore/ParameterSet/interface/ParameterDescriptionCases.h"
#include "FWCore/ParameterSet/interface/EmptyGroupDescription.h"
#include <memory>
namespace edm {
template <typename T, typename... ARGS>
std::unique_ptr<edm::ParameterDescriptionCases<T>> allowedValues(ARGS&&... args) {
return (... || (std::forward<ARGS>(args) >> edm::EmptyGroupDescription()));
}
} // namespace edm
#endif
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