stl_helpers.hh revision 7454:3a3e8e8cce1b
1/* 2 * Copyright (c) 2010 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 */ 30 31#ifndef __BASE_STL_HELPERS_HH__ 32#define __BASE_STL_HELPERS_HH__ 33 34#include <algorithm> 35#include <iostream> 36 37namespace m5 { 38namespace stl_helpers { 39 40template <typename T> 41void 42deletePointer(T &ptr) 43{ 44 delete ptr; 45 ptr = NULL; 46} 47 48template <class T> 49class ContainerPrint 50{ 51 private: 52 std::ostream &out; 53 bool first; 54 55 public: 56 ContainerPrint(std::ostream &out) 57 : out(out), first(true) 58 {} 59 60 void 61 operator()(const T &elem) 62 { 63 out << elem; 64 // First one doesn't get a space before it. The rest do. 65 if (first) 66 first = false; 67 else 68 out << " "; 69 } 70}; 71 72// Treat all objects in an stl container as pointers to heap objects, 73// calling delete on each one and zeroing the pointers along the way 74template <typename T, template <typename T, typename A> class C, typename A> 75void 76deletePointers(C<T,A> &container) 77{ 78 std::for_each(container.begin(), container.end(), deletePointer<T>); 79} 80 81// Write out all elements in an stl container as a space separated 82// list enclosed in square brackets 83template <typename T, template <typename T, typename A> class C, typename A> 84std::ostream & 85operator<<(std::ostream& out, const C<T,A> &vec) 86{ 87 out << "[ "; 88 std::for_each(vec.begin(), vec.end(), ContainerPrint<T>(out)); 89 out << " ]"; 90 out << std::flush; 91 return out; 92} 93 94/* namespace stl_helpers */ } 95/* namespace m5 */ } 96 97#endif // __BASE_STL_HELPERS_HH__ 98