1*544c191cSchristos /* Id: eqn_parse.h,v 1.3 2018/12/14 06:33:14 schwarze Exp */ 2*544c191cSchristos /* 3*544c191cSchristos * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4*544c191cSchristos * Copyright (c) 2014, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org> 5*544c191cSchristos * 6*544c191cSchristos * Permission to use, copy, modify, and distribute this software for any 7*544c191cSchristos * purpose with or without fee is hereby granted, provided that the above 8*544c191cSchristos * copyright notice and this permission notice appear in all copies. 9*544c191cSchristos * 10*544c191cSchristos * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES 11*544c191cSchristos * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12*544c191cSchristos * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR 13*544c191cSchristos * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14*544c191cSchristos * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15*544c191cSchristos * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16*544c191cSchristos * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17*544c191cSchristos * 18*544c191cSchristos * External interface of the eqn(7) parser. 19*544c191cSchristos * For use in the roff(7) and eqn(7) parsers only. 20*544c191cSchristos */ 21*544c191cSchristos 22*544c191cSchristos struct roff_node; 23*544c191cSchristos struct eqn_box; 24*544c191cSchristos struct eqn_def; 25*544c191cSchristos 26*544c191cSchristos struct eqn_node { 27*544c191cSchristos struct roff_node *node; /* Syntax tree of this equation. */ 28*544c191cSchristos struct eqn_def *defs; /* Array of definitions. */ 29*544c191cSchristos char *data; /* Source code of this equation. */ 30*544c191cSchristos char *start; /* First byte of the current token. */ 31*544c191cSchristos char *end; /* First byte of the next token. */ 32*544c191cSchristos size_t defsz; /* Number of definitions. */ 33*544c191cSchristos size_t sz; /* Length of the source code. */ 34*544c191cSchristos size_t toksz; /* Length of the current token. */ 35*544c191cSchristos int gsize; /* Default point size. */ 36*544c191cSchristos int delim; /* In-line delimiters enabled. */ 37*544c191cSchristos char odelim; /* In-line opening delimiter. */ 38*544c191cSchristos char cdelim; /* In-line closing delimiter. */ 39*544c191cSchristos }; 40*544c191cSchristos 41*544c191cSchristos 42*544c191cSchristos struct eqn_node *eqn_alloc(void); 43*544c191cSchristos struct eqn_box *eqn_box_new(void); 44*544c191cSchristos void eqn_box_free(struct eqn_box *); 45*544c191cSchristos void eqn_free(struct eqn_node *); 46*544c191cSchristos void eqn_parse(struct eqn_node *); 47*544c191cSchristos void eqn_read(struct eqn_node *, const char *); 48*544c191cSchristos void eqn_reset(struct eqn_node *); 49