%{

#include "lexer.h"
#include "parser.tab.h"

int line_number; 

%}

%option noyywrap 

%%

\n        { line_number++; return(NL); }

STOP      { return(STOP); }
SEQ       { return(SEQ); }

[ ]*                          /* Ignore spaces */

--.*\n    { line_number++; }  /* Pass over comments */

.         error("Lexical error", "Unrecognised input.\n");

%%

void initialise_lexer(FILE* input)
{
  yyin = input;
  line_number = 1;
}