valueparser.h
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1 /*
2  * Copyright (C) 2011 Tommi Maekitalo
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * As a special exception, you may use this file as part of a free
10  * software library without restriction. Specifically, if other files
11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
16  * reasons why the executable file might be covered by the GNU Library
17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
23  *
24  * You should have received a copy of the GNU Lesser General Public
25  * License along with this library; if not, write to the Free Software
26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27  */
28 
29 #ifndef CXXTOOLS_BIN_VALUEPARSER_H
30 #define CXXTOOLS_BIN_VALUEPARSER_H
31 
33 
34 namespace cxxtools
35 {
36 
37 class DeserializerBase;
38 
39 namespace bin
40 {
41 
43 {
44  ValueParser(const ValueParser&) { }
45  ValueParser& operator= (const ValueParser&) { return *this; }
46 
47  public:
49  : _next(0)
50  { }
51 
53  {
54  delete _next;
55  }
56 
57  void begin(DeserializerBase& handler);
58 
59  void beginSkip();
60 
61  bool advance(char ch); // returns true, if number is read completely
62 
64  { return _deserializer; }
65 
66  private:
67 
68  bool processFloatBase(char ch, unsigned shift, unsigned expOffset);
69  enum State
70  {
71  state_type,
72  state_name,
73  state_value_type_other,
74  state_value_intsign,
75  state_value_int,
76  state_value_uint,
77  state_value_bool,
78  state_value_bcd0,
79  state_value_bcd,
80  state_value_binary_length,
81  state_value_binary,
82  state_value_value,
83  state_sfloat_exp,
84  state_sfloat_base,
85  state_mfloat_exp,
86  state_mfloat_base,
87  state_lfloat_exp,
88  state_lfloat_base,
89  state_object_type,
90  state_object_type_other,
91  state_object_member,
92  state_object_member_value,
93  state_array_type,
94  state_array_type_other,
95  state_array_member,
96  state_array_member_value,
97  state_array_member_value_next,
98  state_end
99  } _state, _nextstate;
100 
101  std::string _token;
102  unsigned _count;
103  uint64_t _int;
104  int _exp;
105  bool _isNeg;
106  DeserializerBase* _deserializer;
107  ValueParser* _next;
108 };
109 }
110 }
111 
112 #endif // CXXTOOLS_BIN_VALUEPARSER_H
113