1 /* <!-- copyright */ 2 /* 3 * aria2 - The high speed download utility 4 * 5 * Copyright (C) 2012 Tatsuhiro Tsujikawa 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * In addition, as a special exception, the copyright holders give 22 * permission to link the code of portions of this program with the 23 * OpenSSL library under certain conditions as described in each 24 * individual source file, and distribute linked combinations 25 * including the two. 26 * You must obey the GNU General Public License in all respects 27 * for all of the code used other than OpenSSL. If you modify 28 * file(s) with this exception, you may extend this exception to your 29 * version of the file(s), but you are not obligated to do so. If you 30 * do not wish to do so, delete this exception statement from your 31 * version. If you delete this exception statement from all source 32 * files in the program, then also delete it here. 33 */ 34 /* copyright --> */ 35 #ifndef D_STRUCT_PARSER_STATE_MACHINE_H 36 #define D_STRUCT_PARSER_STATE_MACHINE_H 37 38 #include "common.h" 39 40 namespace aria2 { 41 42 enum StructElementType { 43 STRUCT_DICT_T, 44 STRUCT_DICT_KEY_T, 45 STRUCT_DICT_DATA_T, 46 STRUCT_ARRAY_T, 47 STRUCT_ARRAY_DATA_T, 48 STRUCT_STRING_T, 49 STRUCT_NUMBER_T, 50 STRUCT_BOOL_T, 51 STRUCT_NULL_T 52 }; 53 54 // Interface for streaming parser of structured data format (e.g., 55 // JSON, Bencode). 56 class StructParserStateMachine { 57 public: 58 virtual ~StructParserStateMachine() = default; 59 60 virtual void beginElement(int elementType) = 0; 61 virtual void endElement(int elementType) = 0; 62 virtual void reset() = 0; 63 virtual void charactersCallback(const char* data, size_t len) = 0; 64 virtual void numberCallback(int64_t number, int frac, int exp) = 0; 65 virtual void boolCallback(bool bval) = 0; 66 }; 67 68 } // namespace aria2 69 70 #endif // D_STRUCT_PARSER_STATE_MACHINE_H 71