1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_CMDLINE_DETAIL_CMDLINE_DEBUG_DETAIL_H_ 18 #define ART_CMDLINE_DETAIL_CMDLINE_DEBUG_DETAIL_H_ 19 20 #include <iostream> 21 #ifndef CMDLINE_NDEBUG 22 #define CMDLINE_DEBUG_LOG std::cerr 23 #else 24 #define CMDLINE_DEBUG_LOG ::art::detail::debug_log_ignore() 25 #endif 26 27 namespace art { 28 // Implementation details for some template querying. Don't look inside if you hate templates. 29 namespace detail { 30 struct debug_log_ignore { 31 // Ignore most of the normal operator<< usage. 32 template <typename T> 33 debug_log_ignore& operator<<(const T&) { return *this; } 34 // Ignore std::endl and the like. 35 debug_log_ignore& operator<<(std::ostream& (*)(std::ostream&) ) { return *this; } 36 }; 37 } // namespace detail // NOLINT [readability/namespace] [5] 38 } // namespace art 39 40 #endif // ART_CMDLINE_DETAIL_CMDLINE_DEBUG_DETAIL_H_ 41
