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996
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1 // MultiLexer.h
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2
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3 #ifndef MULTI_LEXER_H_RAIL_1
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4 #define MULTI_LEXER_H_RAIL_1
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5
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6 class MultiLexer
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7 {
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8 public:
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9 MultiLexer();
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10 void reset(void);
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11 void add(char letter);
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12
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13 bool isStarted(void) const;
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14 bool isDone(void) const;
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15 bool isFunction(void) const;
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16 bool isConstant(void) const;
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17 bool isUse(void) const;
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18 bool isBind(void) const;
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19 std::string const & getToken(void) const;
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20 private:
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21 void inFunction(char letter);
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22 void inConstant(char letter);
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23 void inUse(char letter);
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24 void inBind(char letter);
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25 void tooManyLetters(char letter);
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26 private:
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27 enum StateT
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28 {
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29 EMPTY=0,
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30
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31 FUNCTION_BEGIN,
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32 FUNCTION_END,
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33
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34 CONSTANT_BEGIN,
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35 CONSTANT_END,
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36 ESCAPE_BEGIN,
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37 ESCAPE_END,
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38
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39 VARIABLE_BEGIN,
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40 USE_BEGIN,
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41 USE_END,
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42 BIND_BEGIN,
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43 BIND_MIDDLE,
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44 BIND_END
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45 };
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46 private:
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47 std::string token;
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48 StateT state;
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49 char openChar;
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50 char closeChar;
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51 };
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52
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53 #endif
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