SafeRange.h

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00001 /*
00002  *    Copyright 2006 Intel Corporation
00003  * 
00004  *    Licensed under the Apache License, Version 2.0 (the "License");
00005  *    you may not use this file except in compliance with the License.
00006  *    You may obtain a copy of the License at
00007  * 
00008  *        http://www.apache.org/licenses/LICENSE-2.0
00009  * 
00010  *    Unless required by applicable law or agreed to in writing, software
00011  *    distributed under the License is distributed on an "AS IS" BASIS,
00012  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  *    See the License for the specific language governing permissions and
00014  *    limitations under the License.
00015  */
00016 
00017 #ifndef __SAFERANGE_H__
00018 #define __SAFERANGE_H__
00019 
00020 namespace oasys {
00021 
00027 template<typename _Type>
00028 class SafeRange {
00029 public:
00034     struct Error {
00035         Error(size_t offset) : offset_(offset) {}
00036         size_t offset_;
00037     };
00038 
00039     SafeRange(_Type* a, size_t size)
00040         : array_(a), size_(size) {}
00041     
00042     _Type& operator[](size_t offset) {
00043         if (offset >= size_) {
00044             throw Error(offset);
00045         }
00046         
00047         return array_[offset];
00048     }
00049 
00050 private:
00051     _Type* array_;
00052     size_t size_;
00053 };
00054 
00055 } // namespace oasys
00056 
00057 #endif /* __SAFERANGE_H__ */

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