void luaX_next (LexState *ls) {
ls->lastline = ls->linenumber;
if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */
ls->t = ls->lookahead; /* use this one */
ls->lookahead.token = TK_EOS; /* and discharge it */
}
else
ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */
}
void lj_lex_next(LexState *ls)
{
ls->lastline = ls->linenumber;
if (LJ_LIKELY(ls->lookahead == TK_eof)) { /* No lookahead token? */
ls->token = llex(ls, &ls->tokenval); /* Get next token. */
} else { /* Otherwise return lookahead token. */
ls->token = ls->lookahead;
ls->lookahead = TK_eof;
ls->tokenval = ls->lookaheadval;
}
}
int luaX_lookahead (LexState *ls) {
lua_assert(ls->lookahead.token == TK_EOS);
ls->lookahead.token = llex(ls, &ls->lookahead.seminfo);
return ls->lookahead.token;
}
LexToken lj_lex_lookahead(LexState *ls)
{
lua_assert(ls->lookahead == TK_eof);
ls->lookahead = llex(ls, &ls->lookaheadval);
return ls->lookahead;
}
