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 ADC_CPP_SUB_PE_HXX 25 #define ADC_CPP_SUB_PE_HXX 26 27 28 29 // USED SERVICES 30 // BASE CLASSES 31 // COMPONENTS 32 // PARAMETERS 33 34 35 class ParseEnvironment; 36 37 template <class PE, class SUB> 38 class SubPe 39 { 40 public: 41 typedef SubPe< PE, SUB > self; 42 43 SubPe( 44 PE & i_rParent ); 45 PE & Parent() const; 46 SUB & Child() const; 47 48 ParseEnvironment & Get() const; 49 50 private: 51 SUB & CreateChild() const; 52 53 PE & rParent; 54 Dyn<SUB> pChild; 55 }; 56 57 58 59 // IMPLEMENTATION 60 61 62 // SubPe 63 64 template <class PE, class SUB> 65 SubPe<PE,SUB>::SubPe( PE & i_rParent ) 66 : rParent(i_rParent) 67 { 68 } 69 70 template <class PE, class SUB> 71 PE & 72 SubPe<PE,SUB>::Parent() const 73 { 74 return rParent; 75 } 76 77 template <class PE, class SUB> 78 inline SUB & 79 SubPe<PE,SUB>::Child() const 80 { 81 return pChild ? *pChild.MutablePtr() : CreateChild(); 82 } 83 84 template <class PE, class SUB> 85 ParseEnvironment & 86 SubPe<PE,SUB>::Get() const 87 { 88 return Child(); 89 } 90 91 template <class PE, class SUB> 92 SUB & 93 SubPe<PE,SUB>::CreateChild() const 94 { 95 self * pThis = const_cast< self* >(this); 96 97 SUB * pNewChild = new SUB( &rParent); 98 99 pThis->pChild = pNewChild; 100 101 return *pChild.MutablePtr(); 102 } 103 104 105 106 107 #endif 108 109