1*54ba9607SSascha Wildner /* $Id: eqn_parse.h,v 1.3 2018/12/14 06:33:14 schwarze Exp $ */ 2*54ba9607SSascha Wildner /* 3*54ba9607SSascha Wildner * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4*54ba9607SSascha Wildner * Copyright (c) 2014, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org> 5*54ba9607SSascha Wildner * 6*54ba9607SSascha Wildner * Permission to use, copy, modify, and distribute this software for any 7*54ba9607SSascha Wildner * purpose with or without fee is hereby granted, provided that the above 8*54ba9607SSascha Wildner * copyright notice and this permission notice appear in all copies. 9*54ba9607SSascha Wildner * 10*54ba9607SSascha Wildner * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES 11*54ba9607SSascha Wildner * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12*54ba9607SSascha Wildner * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR 13*54ba9607SSascha Wildner * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14*54ba9607SSascha Wildner * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15*54ba9607SSascha Wildner * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16*54ba9607SSascha Wildner * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17*54ba9607SSascha Wildner * 18*54ba9607SSascha Wildner * External interface of the eqn(7) parser. 19*54ba9607SSascha Wildner * For use in the roff(7) and eqn(7) parsers only. 20*54ba9607SSascha Wildner */ 21*54ba9607SSascha Wildner 22*54ba9607SSascha Wildner struct roff_node; 23*54ba9607SSascha Wildner struct eqn_box; 24*54ba9607SSascha Wildner struct eqn_def; 25*54ba9607SSascha Wildner 26*54ba9607SSascha Wildner struct eqn_node { 27*54ba9607SSascha Wildner struct roff_node *node; /* Syntax tree of this equation. */ 28*54ba9607SSascha Wildner struct eqn_def *defs; /* Array of definitions. */ 29*54ba9607SSascha Wildner char *data; /* Source code of this equation. */ 30*54ba9607SSascha Wildner char *start; /* First byte of the current token. */ 31*54ba9607SSascha Wildner char *end; /* First byte of the next token. */ 32*54ba9607SSascha Wildner size_t defsz; /* Number of definitions. */ 33*54ba9607SSascha Wildner size_t sz; /* Length of the source code. */ 34*54ba9607SSascha Wildner size_t toksz; /* Length of the current token. */ 35*54ba9607SSascha Wildner int gsize; /* Default point size. */ 36*54ba9607SSascha Wildner int delim; /* In-line delimiters enabled. */ 37*54ba9607SSascha Wildner char odelim; /* In-line opening delimiter. */ 38*54ba9607SSascha Wildner char cdelim; /* In-line closing delimiter. */ 39*54ba9607SSascha Wildner }; 40*54ba9607SSascha Wildner 41*54ba9607SSascha Wildner 42*54ba9607SSascha Wildner struct eqn_node *eqn_alloc(void); 43*54ba9607SSascha Wildner struct eqn_box *eqn_box_new(void); 44*54ba9607SSascha Wildner void eqn_box_free(struct eqn_box *); 45*54ba9607SSascha Wildner void eqn_free(struct eqn_node *); 46*54ba9607SSascha Wildner void eqn_parse(struct eqn_node *); 47*54ba9607SSascha Wildner void eqn_read(struct eqn_node *, const char *); 48*54ba9607SSascha Wildner void eqn_reset(struct eqn_node *); 49