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/* SI 413 Fall 2011
 * Lab 6
 * Scanner specification for the pat language
 */
%{
#include <iostream>
using namespace std;
#include "parsetree.hpp"
#include "pat.tab.hpp"
%}

%option noyywrap

%%
[a-z][a-zA-Z0-9]* { yylval = new ParseTree(yytext); return SYM; }
"*"               { yylval = new ParseTree(yytext); return FOLD; }
";"               { yylval = new ParseTree(yytext); return STOP; }
":"               { yylval = new ParseTree(yytext); return COLON; }
[A-Z][a-zA-Z0-9]* { yylval = new ParseTree(yytext); return NAME; }
"_r"              { yylval = new ParseTree(yytext); return REV; }
"["               { yylval = new ParseTree(yytext); return LB; }
"]"               { yylval = new ParseTree(yytext); return RB; }
<<EOF>>           { return 0; }
[ \t\n]+          { }
.        { cerr << "Unrecognized token!" << endl; exit(1); }
%%