1*cec8643bSMichal Nowak /* $Id: eqn_parse.h,v 1.3 2018/12/14 06:33:14 schwarze Exp $ */ 2*cec8643bSMichal Nowak /* 3*cec8643bSMichal Nowak * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4*cec8643bSMichal Nowak * Copyright (c) 2014, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org> 5*cec8643bSMichal Nowak * 6*cec8643bSMichal Nowak * Permission to use, copy, modify, and distribute this software for any 7*cec8643bSMichal Nowak * purpose with or without fee is hereby granted, provided that the above 8*cec8643bSMichal Nowak * copyright notice and this permission notice appear in all copies. 9*cec8643bSMichal Nowak * 10*cec8643bSMichal Nowak * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES 11*cec8643bSMichal Nowak * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12*cec8643bSMichal Nowak * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR 13*cec8643bSMichal Nowak * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14*cec8643bSMichal Nowak * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15*cec8643bSMichal Nowak * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16*cec8643bSMichal Nowak * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17*cec8643bSMichal Nowak * 18*cec8643bSMichal Nowak * External interface of the eqn(7) parser. 19*cec8643bSMichal Nowak * For use in the roff(7) and eqn(7) parsers only. 20*cec8643bSMichal Nowak */ 21*cec8643bSMichal Nowak 22*cec8643bSMichal Nowak struct roff_node; 23*cec8643bSMichal Nowak struct eqn_box; 24*cec8643bSMichal Nowak struct eqn_def; 25*cec8643bSMichal Nowak 26*cec8643bSMichal Nowak struct eqn_node { 27*cec8643bSMichal Nowak struct roff_node *node; /* Syntax tree of this equation. */ 28*cec8643bSMichal Nowak struct eqn_def *defs; /* Array of definitions. */ 29*cec8643bSMichal Nowak char *data; /* Source code of this equation. */ 30*cec8643bSMichal Nowak char *start; /* First byte of the current token. */ 31*cec8643bSMichal Nowak char *end; /* First byte of the next token. */ 32*cec8643bSMichal Nowak size_t defsz; /* Number of definitions. */ 33*cec8643bSMichal Nowak size_t sz; /* Length of the source code. */ 34*cec8643bSMichal Nowak size_t toksz; /* Length of the current token. */ 35*cec8643bSMichal Nowak int gsize; /* Default point size. */ 36*cec8643bSMichal Nowak int delim; /* In-line delimiters enabled. */ 37*cec8643bSMichal Nowak char odelim; /* In-line opening delimiter. */ 38*cec8643bSMichal Nowak char cdelim; /* In-line closing delimiter. */ 39*cec8643bSMichal Nowak }; 40*cec8643bSMichal Nowak 41*cec8643bSMichal Nowak 42*cec8643bSMichal Nowak struct eqn_node *eqn_alloc(void); 43*cec8643bSMichal Nowak struct eqn_box *eqn_box_new(void); 44*cec8643bSMichal Nowak void eqn_box_free(struct eqn_box *); 45*cec8643bSMichal Nowak void eqn_free(struct eqn_node *); 46*cec8643bSMichal Nowak void eqn_parse(struct eqn_node *); 47*cec8643bSMichal Nowak void eqn_read(struct eqn_node *, const char *); 48*cec8643bSMichal Nowak void eqn_reset(struct eqn_node *); 49