%{
    #include "halloween.tab.h"
%}

%%

[\n\t ] { /* Ignore whitespace */ }
"began" { return BEGAN; }
"candy" { return CANDY; }
"round" { return ROUND; }
"trick" { return TRICK; }
"treat" { return TREAT; }
"went"  { return WENT; }
"home"  { return HOME; }
[a-z]+  { printf("[WORD: '%s']", yytext); return WORD; }
";"     { return SEMICOLON; }
":"     { return COLON; }
.       { fprintf(stderr, "[Ignoring invalid character: '%c']\n", *yytext); }

%%