116 static bool p_ere_exp(struct parse *p, struct branchc *bc);
118 static int p_branch_eat_delim(struct parse *p, struct branchc *bc);
119 static void p_branch_ins_offset(struct parse *p, struct branchc *bc);
120 static void p_branch_fix_tail(struct parse *p, struct branchc *bc);
121 static bool p_branch_empty(struct parse *p, struct branchc *bc);
122 static bool p_branch_do(struct parse *p, struct branchc *bc);
123 static void p_bre_pre_parse(struct parse *p, struct branchc *bc);
124 static void p_bre_post_parse(struct parse *p, struct branchc *bc);
126 static bool p_simp_re(struct parse *p, struct branchc *bc);
360 p_ere_exp(struct parse *p, struct branchc *bc)  in p_ere_exp()  argument
370 	(void)bc;  in p_ere_exp()
537 p_branch_eat_delim(struct parse *p, struct branchc *bc)  in p_branch_eat_delim()  argument
541 	(void)bc;  in p_branch_eat_delim()
553 p_branch_ins_offset(struct parse *p, struct branchc *bc)  in p_branch_ins_offset()  argument
556 	if (bc->nbranch == 0) {  in p_branch_ins_offset()
557 		INSERT(OCH_, bc->start);	/* offset is wrong */  in p_branch_ins_offset()
558 		bc->fwd = bc->start;  in p_branch_ins_offset()
559 		bc->back = bc->start;  in p_branch_ins_offset()
562 	ASTERN(OOR1, bc->back);  in p_branch_ins_offset()
563 	bc->back = THERE();  in p_branch_ins_offset()
564 	AHEAD(bc->fwd);			/* fix previous offset */  in p_branch_ins_offset()
565 	bc->fwd = HERE();  in p_branch_ins_offset()
567 	++bc->nbranch;  in p_branch_ins_offset()
575 p_branch_fix_tail(struct parse *p, struct branchc *bc)  in p_branch_fix_tail()  argument
579 	if (bc->nbranch > 0) {  in p_branch_fix_tail()
580 		AHEAD(bc->fwd);  in p_branch_fix_tail()
581 		ASTERN(O_CH, bc->back);  in p_branch_fix_tail()
592 p_branch_empty(struct parse *p, struct branchc *bc)  in p_branch_empty()  argument
595 	(void)bc;  in p_branch_empty()
606 p_branch_do(struct parse *p, struct branchc *bc)  in p_branch_do()  argument
610 	ate = p_branch_eat_delim(p, bc);  in p_branch_do()
613 	else if ((ate > 1 || (bc->outer && !MORE())) && !p_branch_empty(p, bc))  in p_branch_do()
620 	p_branch_ins_offset(p, bc);  in p_branch_do()
626 p_bre_pre_parse(struct parse *p, struct branchc *bc)  in p_bre_pre_parse()  argument
629 	(void) bc;  in p_bre_pre_parse()
643 p_bre_post_parse(struct parse *p, struct branchc *bc)  in p_bre_post_parse()  argument
647 	if (bc->terminate) {  in p_bre_post_parse()
669 	struct branchc bc;  in p_re()  local
671 	bc.nbranch = 0;  in p_re()
673 		bc.outer = true;  in p_re()
675 		bc.outer = false;  in p_re()
678 		bc.start = HERE();  in p_re()
679 		bc.nchain = 0;  in p_re()
680 		bc.terminate = false;  in p_re()
682 			p->pre_parse(p, &bc);  in p_re()
684 			bc.terminate = p->parse_expr(p, &bc);  in p_re()
685 			++bc.nchain;  in p_re()
688 			p->post_parse(p, &bc);  in p_re()
689 		(void) REQUIRE(HERE() != bc.start, REG_EMPTY);  in p_re()
699 		if (!p_branch_do(p, &bc))  in p_re()
704 		p_branch_fix_tail(p, &bc);  in p_re()
713 p_simp_re(struct parse *p, struct branchc *bc)  in p_simp_re()  argument
799 		(void)REQUIRE(bc->nchain == 0, REG_BADRPT);  in p_simp_re()