108 static bool p_ere_exp(struct parse *p, struct branchc *bc);
110 static int p_branch_eat_delim(struct parse *p, struct branchc *bc);
111 static void p_branch_ins_offset(struct parse *p, struct branchc *bc);
112 static void p_branch_fix_tail(struct parse *p, struct branchc *bc);
113 static bool p_branch_empty(struct parse *p, struct branchc *bc);
114 static bool p_branch_do(struct parse *p, struct branchc *bc);
115 static void p_bre_pre_parse(struct parse *p, struct branchc *bc);
116 static void p_bre_post_parse(struct parse *p, struct branchc *bc);
118 static bool p_simp_re(struct parse *p, struct branchc *bc);
353 p_ere_exp(struct parse *p, struct branchc *bc)  in p_ere_exp()  argument
363 	(void) bc;  in p_ere_exp()
529 p_branch_eat_delim(struct parse *p, struct branchc *bc)  in p_branch_eat_delim()  argument
533 	(void) bc;  in p_branch_eat_delim()
545 p_branch_ins_offset(struct parse *p, struct branchc *bc)  in p_branch_ins_offset()  argument
547 	if (bc->nbranch == 0) {  in p_branch_ins_offset()
548 		INSERT(OCH_, bc->start);	/* offset is wrong */  in p_branch_ins_offset()
549 		bc->fwd = bc->start;  in p_branch_ins_offset()
550 		bc->back = bc->start;  in p_branch_ins_offset()
553 	ASTERN(OOR1, bc->back);  in p_branch_ins_offset()
554 	bc->back = THERE();  in p_branch_ins_offset()
555 	AHEAD(bc->fwd);			/* fix previous offset */  in p_branch_ins_offset()
556 	bc->fwd = HERE();  in p_branch_ins_offset()
558 	++bc->nbranch;  in p_branch_ins_offset()
566 p_branch_fix_tail(struct parse *p, struct branchc *bc)  in p_branch_fix_tail()  argument
569 	if (bc->nbranch > 0) {  in p_branch_fix_tail()
570 		AHEAD(bc->fwd);  in p_branch_fix_tail()
571 		ASTERN(O_CH, bc->back);  in p_branch_fix_tail()
582 p_branch_empty(struct parse *p, struct branchc *bc)  in p_branch_empty()  argument
584 	(void) bc;  in p_branch_empty()
595 p_branch_do(struct parse *p, struct branchc *bc)  in p_branch_do()  argument
599 	ate = p_branch_eat_delim(p, bc);  in p_branch_do()
602 	else if ((ate > 1 || (bc->outer && !MORE())) && !p_branch_empty(p, bc))  in p_branch_do()
609 	p_branch_ins_offset(p, bc);  in p_branch_do()
615 p_bre_pre_parse(struct parse *p, struct branchc *bc)  in p_bre_pre_parse()  argument
617 	(void) bc;  in p_bre_pre_parse()
631 p_bre_post_parse(struct parse *p, struct branchc *bc)  in p_bre_post_parse()  argument
634 	if (bc->terminate) {  in p_bre_post_parse()
655 	struct branchc bc;  in p_re()  local
657 	bc.nbranch = 0;  in p_re()
659 		bc.outer = true;  in p_re()
661 		bc.outer = false;  in p_re()
664 		bc.start = HERE();  in p_re()
665 		bc.nchain = 0;  in p_re()
666 		bc.terminate = false;  in p_re()
668 			p->pre_parse(p, &bc);  in p_re()
671 			bc.terminate = p->parse_expr(p, &bc);  in p_re()
672 			++bc.nchain;  in p_re()
675 			p->post_parse(p, &bc);  in p_re()
676 		(void) REQUIRE(HERE() != bc.start, REG_BADPAT);  in p_re()
686 		if (!p_branch_do(p, &bc))  in p_re()
691 		p_branch_fix_tail(p, &bc);  in p_re()
699 p_simp_re(struct parse *p, struct branchc *bc)  in p_simp_re()  argument
785 		(void) REQUIRE(bc->nchain == 0, REG_BADRPT);  in p_simp_re()