49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/* $Id: eqn_parse.h,v 1.3 2018/12/14 06:33:14 schwarze Exp $ */
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/*
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* Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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* Copyright (c) 2014, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* External interface of the eqn(7) parser.
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* For use in the roff(7) and eqn(7) parsers only.
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*/
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struct roff_node;
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struct eqn_box;
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struct eqn_def;
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struct eqn_node {
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struct roff_node *node; /* Syntax tree of this equation. */
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struct eqn_def *defs; /* Array of definitions. */
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char *data; /* Source code of this equation. */
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char *start; /* First byte of the current token. */
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char *end; /* First byte of the next token. */
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size_t defsz; /* Number of definitions. */
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size_t sz; /* Length of the source code. */
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size_t toksz; /* Length of the current token. */
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int gsize; /* Default point size. */
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int delim; /* In-line delimiters enabled. */
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char odelim; /* In-line opening delimiter. */
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char cdelim; /* In-line closing delimiter. */
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};
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struct eqn_node *eqn_alloc(void);
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struct eqn_box *eqn_box_new(void);
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void eqn_box_free(struct eqn_box *);
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void eqn_free(struct eqn_node *);
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void eqn_parse(struct eqn_node *);
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void eqn_read(struct eqn_node *, const char *);
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void eqn_reset(struct eqn_node *);
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