| Alexander Afanasyev | 8b37905 | 2011-08-21 16:58:20 -0700 | [diff] [blame] | 1 | /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */ |
| 2 | /* |
| 3 | * Copyright (c) 2011 University of California, Los Angeles |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation; |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | * |
| 18 | * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu> |
| 19 | */ |
| 20 | |
| 21 | #ifndef _CCNB_PARSER_NON_NEGATIVE_INTEGER_VISITOR_H_ |
| 22 | #define _CCNB_PARSER_NON_NEGATIVE_INTEGER_VISITOR_H_ |
| 23 | |
| 24 | #include "ccnb-parser-no-argu-depth-first-visitor.h" |
| 25 | |
| 26 | namespace ns3 { |
| 27 | namespace CcnbParser { |
| 28 | |
| 29 | /** |
| 30 | * \ingroup ccnx-ccnb |
| 31 | * \brief Visitor to obtain non-negative integer value from UDATA block |
| 32 | * |
| 33 | * Will return empty boost::any() if called on anything except UDATA block |
| 34 | */ |
| 35 | class NonNegativeIntegerVisitor : public NoArguDepthFirstVisitor |
| 36 | { |
| 37 | public: |
| 38 | virtual boost::any visit (Blob &n); ///< Throws an exception if BLOB object is encountered |
| 39 | virtual boost::any visit (Udata &n); |
| 40 | }; |
| 41 | |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | #endif // _CCNB_PARSER_NON_NEGATIVE_INTEGER_VISITOR_H_ |