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File indexing completed on 2025-09-15 08:55:05
0001 //------------------------------- -*- C++ -*- -------------------------------// 0002 // Copyright Celeritas contributors: see top-level COPYRIGHT file for details 0003 // SPDX-License-Identifier: (Apache-2.0 OR MIT) 0004 //---------------------------------------------------------------------------// 0005 //! \file corecel/io/detail/NullLoggerMessage.hh 0006 //---------------------------------------------------------------------------// 0007 #pragma once 0008 0009 #include <ostream> 0010 0011 #include "corecel/Macros.hh" 0012 0013 namespace celeritas 0014 { 0015 namespace detail 0016 { 0017 //---------------------------------------------------------------------------// 0018 /*! 0019 * Stream-like helper class that \em discards everything passed to it. 0020 * 0021 * This helper class should simply eat any messages and objects passed to it. 0022 */ 0023 class NullLoggerMessage 0024 { 0025 public: 0026 //!@{ 0027 //! \name Type aliases 0028 using StreamManip = std::ostream& (*)(std::ostream&); 0029 //!@} 0030 0031 public: 0032 // Default constructor. 0033 NullLoggerMessage() = default; 0034 0035 //! Do not print this object 0036 template<class T> 0037 CELER_FORCEINLINE_FUNCTION NullLoggerMessage& operator<<(T&&) 0038 { 0039 return *this; 0040 } 0041 0042 //! Ignore this manipulator function 0043 CELER_FORCEINLINE_FUNCTION NullLoggerMessage& operator<<(StreamManip) 0044 { 0045 return *this; 0046 } 0047 0048 //! Do not set any state 0049 CELER_FORCEINLINE_FUNCTION void setstate(std::ostream::iostate) {} 0050 }; 0051 0052 //---------------------------------------------------------------------------// 0053 } // namespace detail 0054 } // namespace celeritas
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