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