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Viewing changes to Development/parsers/test/parser.fl

  • Committer: Suren A. Chilingaryan
  • Date: 2009-04-09 03:21:08 UTC
  • Revision ID: csa@dside.dyndns.org-20090409032108-w4edamdh4adrgdu3
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Development/parsers/test/parser.fl
 
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%{
 
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#include "parser.tab.h"
 
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%}
 
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stdnum          [[:digit:]]+(\.[[:digit:]]*)?
 
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scinum          [[:digit:]]\.[[:digit:]]+[eE][+\-][[:digit:]]+
 
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num             ({stdnum}|{scinum})
 
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var             [[:alpha:]][[:alnum:]]*
 
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minus_op        [\-]
 
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plus_op         [+]
 
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mult_op         [*]
 
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div_op          [/]
 
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eq_op           [=]
 
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open_prnt       [\({\[]
 
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close_prnt      [\)}\]]
 
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operator        ({minus_op}|{plus_op}|{mult_op}|{div_op})
 
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endline         [\n]
 
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%%
 
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{num}           { 
 
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                    yylval.val = atof(yytext); 
 
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                    return NUM; 
 
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                }
 
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{var}           {
 
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                    yylval.var = strdup(yytext);
 
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                    return VAR;
 
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                }
 
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{minus_op}      return '-';
 
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{plus_op}       return '+';
 
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{mult_op}       return '*';
 
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{div_op}        return '/';
 
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{open_prnt}     return '(';
 
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{close_prnt}    return ')';
 
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{eq_op}         return '=';
 
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{endline}       return END;
 
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.               /* ignoring */