celeritas/ext/RootJsonDumper.hh

0001 //----------------------------------*-C++-*----------------------------------//
0002 // Copyright 2024 UT-Battelle, LLC, and other Celeritas developers.
0003 // See the top-level COPYRIGHT file for details.
0004 // SPDX-License-Identifier: (Apache-2.0 OR MIT)
0005 //---------------------------------------------------------------------------//
0006 //! \file celeritas/ext/RootJsonDumper.hh
0007 //---------------------------------------------------------------------------//
0008 #pragma once
0009
0010 #include <iosfwd>
0011
0012 #include "corecel/Config.hh"
0013
0014 #include "corecel/Assert.hh"
0015
0016 namespace celeritas
0017 {
0018 struct ImportData;
0019
0020 //---------------------------------------------------------------------------//
0021 /*!
0022  * Write an \c ImportData object to JSON output.
0023  *
0024  * \code
0025  *  RootJsonDumper dump(&std::cout);
0026  *  dump(my_import_data);
0027  * \endcode
0028  */
0029 class RootJsonDumper
0030 {
0031   public:
0032     // Construct with an output stream
0033     explicit RootJsonDumper(std::ostream* os);
0034
0035     // Save data to the JSON file
0036     void operator()(ImportData const& data);
0037
0038   private:
0039     std::ostream* os_;
0040 };
0041
0042 //---------------------------------------------------------------------------//
0043 #if !CELERITAS_USE_ROOT
0044 inline RootJsonDumper::RootJsonDumper(std::ostream*)
0045 {
0046     CELER_DISCARD(os_);
0047     CELER_NOT_CONFIGURED("ROOT");
0048 }
0049
0050 inline void RootJsonDumper::operator()(ImportData const&)
0051 {
0052     CELER_ASSERT_UNREACHABLE();
0053 }
0054 #endif
0055
0056 //---------------------------------------------------------------------------//
0057 }  // namespace celeritas