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muParserTokenReader.h
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1 /*
2  __________
3  _____ __ __\______ \_____ _______ ______ ____ _______
4  / \ | | \| ___/\__ \ \_ __ \/ ___/_/ __ \\_ __ \
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8  Copyright (C) 2004-2013 Ingo Berg
9 
10  Permission is hereby granted, free of charge, to any person obtaining a copy of this
11  software and associated documentation files (the "Software"), to deal in the Software
12  without restriction, including without limitation the rights to use, copy, modify,
13  merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
14  permit persons to whom the Software is furnished to do so, subject to the following conditions:
15 
16  The above copyright notice and this permission notice shall be included in all copies or
17  substantial portions of the Software.
18 
19  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
20  NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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23  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25 
26 #ifndef MU_PARSER_TOKEN_READER_H
27 #define MU_PARSER_TOKEN_READER_H
28 
29 #include <cassert>
30 #include <cstdio>
31 #include <cstring>
32 #include <list>
33 #include <map>
34 #include <memory>
35 #include <stack>
36 #include <string>
37 
38 #include "muParserDef.h"
39 #include "muParserToken.h"
40 
46 namespace mu
47 {
48  // Forward declaration
49  class ParserBase;
50 
54  class ParserTokenReader
55  {
56  private:
57 
58  typedef ParserToken<value_type, string_type> token_type;
59 
60  public:
61 
62  ParserTokenReader(ParserBase *a_pParent);
63  ParserTokenReader* Clone(ParserBase *a_pParent) const;
64 
65  void AddValIdent(identfun_type a_pCallback);
66  void SetVarCreator(facfun_type a_pFactory, void *pUserData);
67  void SetFormula(const string_type &a_strFormula);
68  void SetArgSep(char_type cArgSep);
69 
70  int GetPos() const;
71  const string_type& GetExpr() const;
72  varmap_type& GetUsedVar();
73  char_type GetArgSep() const;
74 
75  void IgnoreUndefVar(bool bIgnore);
76  void ReInit();
77  token_type ReadNextToken();
78 
79  private:
80 
87  enum ESynCodes
88  {
89  noBO = 1 << 0,
90  noBC = 1 << 1,
91  noVAL = 1 << 2,
92  noVAR = 1 << 3,
93  noARG_SEP = 1 << 4,
94  noFUN = 1 << 5,
95  noOPT = 1 << 6,
96  noPOSTOP = 1 << 7,
97  noINFIXOP = 1 << 8,
98  noEND = 1 << 9,
99  noSTR = 1 << 10,
100  noASSIGN = 1 << 11,
101  noIF = 1 << 12,
102  noELSE = 1 << 13,
103  sfSTART_OF_LINE = noOPT | noBC | noPOSTOP | noASSIGN | noIF | noELSE | noARG_SEP,
104  noANY = ~0
105  };
106 
107  ParserTokenReader(const ParserTokenReader &a_Reader);
108  ParserTokenReader& operator=(const ParserTokenReader &a_Reader);
109  void Assign(const ParserTokenReader &a_Reader);
110 
111  void SetParent(ParserBase *a_pParent);
112  int ExtractToken(const char_type *a_szCharSet,
113  string_type &a_strTok,
114  int a_iPos) const;
115  int ExtractOperatorToken(string_type &a_sTok, int a_iPos) const;
116 
117  bool IsBuiltIn(token_type &a_Tok);
118  bool IsArgSep(token_type &a_Tok);
119  bool IsEOF(token_type &a_Tok);
120  bool IsInfixOpTok(token_type &a_Tok);
121  bool IsFunTok(token_type &a_Tok);
122  bool IsPostOpTok(token_type &a_Tok);
123  bool IsOprt(token_type &a_Tok);
124  bool IsValTok(token_type &a_Tok);
125  bool IsVarTok(token_type &a_Tok);
126  bool IsStrVarTok(token_type &a_Tok);
127  bool IsUndefVarTok(token_type &a_Tok);
128  bool IsString(token_type &a_Tok);
129  void Error(EErrorCodes a_iErrc,
130  int a_iPos = -1,
131  const string_type &a_sTok = string_type() ) const;
132 
133  token_type& SaveBeforeReturn(const token_type &tok);
134 
135  ParserBase *m_pParser;
136  string_type m_strFormula;
137  int m_iPos;
138  int m_iSynFlags;
139  bool m_bIgnoreUndefVar;
140 
141  const funmap_type *m_pFunDef;
142  const funmap_type *m_pPostOprtDef;
143  const funmap_type *m_pInfixOprtDef;
144  const funmap_type *m_pOprtDef;
145  const valmap_type *m_pConstDef;
146  const strmap_type *m_pStrVarDef;
147  varmap_type *m_pVarDef;
148  facfun_type m_pFactory;
149  void *m_pFactoryData;
150  std::list<identfun_type> m_vIdentFun;
151  varmap_type m_UsedVar;
152  value_type m_fZero;
153  int m_iBrackets;
154  token_type m_lastTok;
155  char_type m_cArgSep;
156  };
157 } // namespace mu
158 
159 #endif
160 
161