| /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| * for the specific language governing rights and limitations under the |
| * License. |
| * |
| * The Original Code is C++ pointer array template. |
| * |
| * The Initial Developer of the Original Code is Mozilla Corporation. |
| * Portions created by the Initial Developer are Copyright (C) 2006 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Jonas Sicking <jonas@sicking.cc> |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either the GNU General Public License Version 2 or later (the "GPL"), or |
| * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the MPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| |
| |
| #ifndef nsTPtrArray_h__ |
| #define nsTPtrArray_h__ |
| |
| #include "nsTArray.h" |
| |
| // |
| // The templatized array class for storing pointers. The class is based on |
| // nsTArray and has all the features of that class, in addition to an |
| // implementation of SafeElementAt that returns null for out of bounds access |
| // |
| template<class E> |
| class nsTPtrArray : public nsTArray<E*> { |
| public: |
| typedef nsTPtrArray<E> self_type; |
| typedef nsTArray<E*> base_type; |
| typedef typename base_type::size_type size_type; |
| typedef typename base_type::elem_type elem_type; |
| typedef typename base_type::index_type index_type; |
| |
| // |
| // Initialization methods |
| // |
| |
| nsTPtrArray() {} |
| |
| // Initialize this array and pre-allocate some number of elements. |
| explicit nsTPtrArray(size_type capacity) { |
| SetCapacity(capacity); |
| } |
| |
| // The array's copy-constructor performs a 'deep' copy of the given array. |
| // @param other The array object to copy. |
| nsTPtrArray(const self_type& other) { |
| AppendElements(other); |
| } |
| |
| // |
| // Accessor methods |
| // |
| |
| // Forward SafeElementAt to avoid shadowing (and warnings thereof) |
| elem_type& SafeElementAt(index_type i, elem_type& def) { |
| return base_type::SafeElementAt(i, def); |
| } |
| const elem_type& SafeElementAt(index_type i, const elem_type& def) const { |
| return base_type::SafeElementAt(i, def); |
| } |
| |
| // This method provides direct access to the i'th element of the array in |
| // a bounds safe manner. If the requested index is out of bounds null is |
| // returned. |
| // @param i The index of an element in the array. |
| elem_type SafeElementAt(index_type i) const { |
| return SafeElementAt(i, nsnull); |
| } |
| }; |
| |
| template<class E, PRUint32 N> |
| class nsAutoTPtrArray : public nsTPtrArray<E> { |
| public: |
| typedef nsTPtrArray<E> base_type; |
| typedef typename base_type::Header Header; |
| typedef typename base_type::elem_type elem_type; |
| |
| nsAutoTPtrArray() { |
| base_type::mHdr = reinterpret_cast<Header*>(&mAutoBuf); |
| base_type::mHdr->mLength = 0; |
| base_type::mHdr->mCapacity = N; |
| base_type::mHdr->mIsAutoArray = 1; |
| |
| NS_ASSERTION(base_type::GetAutoArrayBuffer() == |
| reinterpret_cast<Header*>(&mAutoBuf), |
| "GetAutoArrayBuffer needs to be fixed"); |
| } |
| |
| protected: |
| char mAutoBuf[sizeof(Header) + N * sizeof(elem_type)]; |
| }; |
| |
| #endif // nsTPtrArray_h__ |