Mercurial > projects > qtd
view generator/parser/rpp/pp-environment.h @ 236:fcc0ada121e1
The fix from rev.236 is back
author | SokoL_SD |
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date | Sun, 19 Jul 2009 18:20:15 +0000 |
parents | 09a0f1d048f2 |
children |
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/**************************************************************************** ** ** Copyright (C) 1992-2009 Nokia. All rights reserved. ** Copyright 2005 Roberto Raggi <roberto@kdevelop.org> ** ** This file is part of Qt Jambi. ** ** Commercial Usage Licensees holding valid Qt Commercial licenses may use this file in accordance with the Qt Commercial License Agreement provided with the Software or, alternatively, in accordance with the terms contained in a written agreement between you and Nokia. GNU Lesser General Public License Usage Alternatively, this file may be used under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation and appearing in the file LICENSE.LGPL included in the packaging of this file. Please review the following information to ensure the GNU Lesser General Public License version 2.1 requirements will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. In addition, as a special exception, Nokia gives you certain additional rights. These rights are described in the Nokia Qt LGPL Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this package. GNU General Public License Usage Alternatively, this file may be used under the terms of the GNU General Public License version 3.0 as published by the Free Software Foundation and appearing in the file LICENSE.GPL included in the packaging of this file. Please review the following information to ensure the GNU General Public License version 3.0 requirements will be met: http://www.gnu.org/copyleft/gpl.html. If you are unsure which license is appropriate for your use, please contact the sales department at qt-sales@nokia.com. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #ifndef PP_ENVIRONMENT_H #define PP_ENVIRONMENT_H #include <vector> #include <cstring> namespace rpp { class pp_environment { public: typedef std::vector<pp_macro*>::const_iterator const_iterator; public: pp_environment (): current_line (0), _M_hash_size (4093) { _M_base = (pp_macro **) memset (new pp_macro* [_M_hash_size], 0, _M_hash_size * sizeof (pp_macro*)); } ~pp_environment () { for (std::size_t i = 0; i < _M_macros.size (); ++i) delete _M_macros [i]; delete [] _M_base; } const_iterator first_macro () const { return _M_macros.begin (); } const_iterator last_macro () const { return _M_macros.end (); } inline void bind (pp_fast_string const *__name, pp_macro const &__macro) { std::size_t h = hash_code (*__name) % _M_hash_size; pp_macro *m = new pp_macro (__macro); m->name = __name; m->next = _M_base [h]; m->hash_code = h; _M_base [h] = m; _M_macros.push_back (m); if (_M_macros.size() == _M_hash_size) rehash(); } inline void unbind (pp_fast_string const *__name) { if (pp_macro *m = resolve (__name)) m->hidden = true; } inline void unbind (char const *__s, std::size_t __size) { pp_fast_string __tmp (__s, __size); unbind (&__tmp); } inline pp_macro *resolve (pp_fast_string const *__name) const { std::size_t h = hash_code (*__name) % _M_hash_size; pp_macro *it = _M_base [h]; while (it && it->name && it->hash_code == h && (*it->name != *__name || it->hidden)) it = it->next; return it; } inline pp_macro *resolve (char const *__data, std::size_t __size) const { pp_fast_string const __tmp (__data, __size); return resolve (&__tmp); } std::string current_file; int current_line; private: inline std::size_t hash_code (pp_fast_string const &s) const { std::size_t hash_value = 0; for (std::size_t i = 0; i < s.size (); ++i) hash_value = (hash_value << 5) - hash_value + s.at (i); return hash_value; } void rehash() { delete[] _M_base; _M_hash_size <<= 1; _M_base = (pp_macro **) memset (new pp_macro* [_M_hash_size], 0, _M_hash_size * sizeof(pp_macro*)); for (std::size_t index = 0; index < _M_macros.size (); ++index) { pp_macro *elt = _M_macros [index]; std::size_t h = hash_code (*elt->name) % _M_hash_size; elt->next = _M_base [h]; elt->hash_code = h; _M_base [h] = elt; } } private: std::vector<pp_macro*> _M_macros; pp_macro **_M_base; std::size_t _M_hash_size; }; } // namespace rpp #endif // PP_ENVIRONMENT_H // kate: space-indent on; indent-width 2; replace-tabs on;