1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef COMPHELPER_FLAGGUARD_HXX 25 #define COMPHELPER_FLAGGUARD_HXX 26 27 #include "comphelper/scopeguard.hxx" 28 29 //...................................................................................................................... 30 namespace comphelper 31 { 32 //...................................................................................................................... 33 34 //================================================================================================================== 35 //= FlagRestorationGuard 36 //================================================================================================================== 37 class COMPHELPER_DLLPUBLIC FlagRestorationGuard : public ScopeGuard 38 { 39 public: FlagRestorationGuard(bool & i_flagRef,bool i_temporaryValue,exc_handling i_excHandling=IGNORE_EXCEPTIONS)40 FlagRestorationGuard( bool& i_flagRef, bool i_temporaryValue, exc_handling i_excHandling = IGNORE_EXCEPTIONS ) 41 :ScopeGuard( ::boost::bind( RestoreFlag, ::boost::ref( i_flagRef ), !!i_flagRef ), i_excHandling ) 42 { 43 i_flagRef = i_temporaryValue; 44 } 45 46 ~FlagRestorationGuard(); 47 48 private: RestoreFlag(bool & i_flagRef,bool i_originalValue)49 static void RestoreFlag( bool& i_flagRef, bool i_originalValue ) 50 { 51 i_flagRef = i_originalValue; 52 } 53 }; 54 55 //================================================================================================================== 56 //= FlagGuard 57 //================================================================================================================== 58 class COMPHELPER_DLLPUBLIC FlagGuard : public ScopeGuard 59 { 60 public: FlagGuard(bool & i_flagRef,exc_handling i_excHandling=IGNORE_EXCEPTIONS)61 explicit FlagGuard( bool& i_flagRef, exc_handling i_excHandling = IGNORE_EXCEPTIONS ) 62 :ScopeGuard( ::boost::bind( ResetFlag, ::boost::ref( i_flagRef ) ), i_excHandling ) 63 { 64 i_flagRef = true; 65 } 66 67 ~FlagGuard(); 68 69 private: ResetFlag(bool & i_flagRef)70 static void ResetFlag( bool& i_flagRef ) 71 { 72 i_flagRef = false; 73 } 74 }; 75 76 //...................................................................................................................... 77 } // namespace comphelper 78 //...................................................................................................................... 79 80 #endif // COMPHELPER_FLAGGUARD_HXX 81