%{ /* -*- C -*- */ #include #include #include "parser.h" %} %option warn nodefault /* makes the scanner terminate after reaching <> instead of assuming a new input was provided */ %option noyywrap /* disable some unused functionality, add scanner tracking */ %option nounput noinput batch debug /* gimme a reentrant parser (overkill but more pure) */ %option reentrant %option bison-bridge NL [\n] SPACE [ \t] ROCK [AX] PAPER [BY] SCISSOR [CZ] %% {NL} { return NEWLINE; } {SPACE}+ { /* don't care */} {ROCK} { return ROCK; } {PAPER} { return PAPER; } {SCISSOR} { return SCISSOR; } <> { return END_OF_FILE; } . { printf("[error] Encountered unexpected token %s\n", yytext); return 0; } %%