%option noyywrap

%{

#include <stdlib.h>
#include "global.h"


#define YY_DECL int lexan()

int lineno = 1;
int tokenval = NONE;


%}

%%

[t ] {}

[n] {
  lineno++;
}

[0-9]+ {
  tokenval = atoi(yytext);
  return NUM;
}

[A-za-z][A-za-z0-9]+ {
  int p = lookup(yytext);
  if (p == 0)
    p = insert(yytext, ID);
    tokenval = p;
  return symtable[p].token;
}

<<EOF>> {
  yylex_destroy();
  return DONE;
}

. {
  tokenval = NONE;
  return yytext[0];
}

%%