Last change
on this file since 467 was
458,
checked in by ymipsl, 11 years ago
|
Add new parsing expression functionnalities
adding new files
YM
|
File size:
1.2 KB
|
Line | |
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1 | %option noyywrap |
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2 | %{ |
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3 | |
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4 | extern "C" |
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5 | { |
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6 | int yylex(void); |
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7 | } |
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8 | #undef YY_INPUT |
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9 | #define YY_INPUT(b,r,s) readInputForLexer(b,&r,s) |
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10 | #include <string> |
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11 | |
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12 | int readInputForLexer( char *buffer, int *numBytesRead, int maxBytesToRead ) ; |
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13 | |
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14 | |
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15 | #include "simple_node_expr.hpp" |
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16 | #include "yacc_parser.hpp" |
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17 | |
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18 | %} |
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19 | |
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20 | white [ \t]+ |
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21 | |
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22 | digit [0-9] |
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23 | integer {digit}+ |
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24 | exponant [eE][+-]?{integer} |
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25 | real {integer}("."{integer})?{exponant}? |
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26 | id [a-zA-Z][a-zA-Z0-9_]* |
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27 | average @{id} |
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28 | var \${id} |
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29 | %% |
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30 | |
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31 | {white} { /* We ignore white characters */ } |
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32 | |
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33 | {real} { |
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34 | yylval.str=new std::string(yytext); |
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35 | return NUMBER ; |
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36 | } |
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37 | |
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38 | {average} { |
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39 | yylval.str=new std::string(yytext+1) ; |
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40 | return AVERAGE ; |
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41 | } |
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42 | |
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43 | {var} { |
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44 | yylval.str=new std::string(yytext+1) ; |
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45 | return VAR ; |
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46 | } |
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47 | |
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48 | {id} { |
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49 | yylval.str=new std::string(yytext) ; |
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50 | return ID ; |
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51 | } |
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52 | |
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53 | |
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54 | "+" return(PLUS); |
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55 | "-" return(MINUS); |
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56 | |
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57 | "*" return(TIMES); |
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58 | "/" return(DIVIDE); |
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59 | |
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60 | "^" return(POWER); |
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61 | |
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62 | "(" return(LEFT_PARENTHESIS); |
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63 | ")" return(RIGHT_PARENTHESIS); |
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64 | |
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65 | "\0" { |
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66 | return(END); |
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67 | } |
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