1*c1c95addSBrooks Davis /* $Id: eqn_parse.h,v 1.4 2022/04/13 20:26:19 schwarze Exp $ */ 27295610fSBaptiste Daroussin /* 3*c1c95addSBrooks Davis * Copyright (c) 2014, 2017, 2018, 2022 Ingo Schwarze <schwarze@openbsd.org> 47295610fSBaptiste Daroussin * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> 57295610fSBaptiste Daroussin * 67295610fSBaptiste Daroussin * Permission to use, copy, modify, and distribute this software for any 77295610fSBaptiste Daroussin * purpose with or without fee is hereby granted, provided that the above 87295610fSBaptiste Daroussin * copyright notice and this permission notice appear in all copies. 97295610fSBaptiste Daroussin * 107295610fSBaptiste Daroussin * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES 117295610fSBaptiste Daroussin * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 127295610fSBaptiste Daroussin * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR 137295610fSBaptiste Daroussin * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 147295610fSBaptiste Daroussin * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 157295610fSBaptiste Daroussin * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 167295610fSBaptiste Daroussin * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 177295610fSBaptiste Daroussin * 187295610fSBaptiste Daroussin * External interface of the eqn(7) parser. 197295610fSBaptiste Daroussin * For use in the roff(7) and eqn(7) parsers only. 207295610fSBaptiste Daroussin */ 217295610fSBaptiste Daroussin 227295610fSBaptiste Daroussin struct roff_node; 237295610fSBaptiste Daroussin struct eqn_box; 247295610fSBaptiste Daroussin struct eqn_def; 257295610fSBaptiste Daroussin 267295610fSBaptiste Daroussin struct eqn_node { 277295610fSBaptiste Daroussin struct roff_node *node; /* Syntax tree of this equation. */ 287295610fSBaptiste Daroussin struct eqn_def *defs; /* Array of definitions. */ 297295610fSBaptiste Daroussin char *data; /* Source code of this equation. */ 307295610fSBaptiste Daroussin char *start; /* First byte of the current token. */ 317295610fSBaptiste Daroussin char *end; /* First byte of the next token. */ 327295610fSBaptiste Daroussin size_t defsz; /* Number of definitions. */ 337295610fSBaptiste Daroussin size_t sz; /* Length of the source code. */ 347295610fSBaptiste Daroussin size_t toksz; /* Length of the current token. */ 35*c1c95addSBrooks Davis int sublen; /* End of rightmost substitution, so far. */ 36*c1c95addSBrooks Davis int subcnt; /* Number of recursive substitutions. */ 377295610fSBaptiste Daroussin int gsize; /* Default point size. */ 387295610fSBaptiste Daroussin int delim; /* In-line delimiters enabled. */ 397295610fSBaptiste Daroussin char odelim; /* In-line opening delimiter. */ 407295610fSBaptiste Daroussin char cdelim; /* In-line closing delimiter. */ 417295610fSBaptiste Daroussin }; 427295610fSBaptiste Daroussin 437295610fSBaptiste Daroussin 447295610fSBaptiste Daroussin struct eqn_node *eqn_alloc(void); 457295610fSBaptiste Daroussin struct eqn_box *eqn_box_new(void); 467295610fSBaptiste Daroussin void eqn_box_free(struct eqn_box *); 477295610fSBaptiste Daroussin void eqn_free(struct eqn_node *); 487295610fSBaptiste Daroussin void eqn_parse(struct eqn_node *); 497295610fSBaptiste Daroussin void eqn_read(struct eqn_node *, const char *); 507295610fSBaptiste Daroussin void eqn_reset(struct eqn_node *); 51