1 files changed, 49 insertions, 0 deletions
diff --git a/eqn_parse.h b/eqn_parse.h
new file mode 100644
index 00000000..873720b2
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+++ b/eqn_parse.h
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+/*	$Id: eqn_parse.h,v 1.1 2018/12/13 03:40:13 schwarze Exp $ */
+/*
+ * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2014, 2017 Ingo Schwarze <schwarze@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * External interface of the eqn(7) parser.
+ * For use in the roff(7) and eqn(7) parsers only.
+ */
+
+struct mparse;
+struct roff_node;
+struct eqn_box;
+struct eqn_def;
+
+struct	eqn_node {
+	struct mparse	 *parse;   /* Main parser, for error reporting. */
+	struct roff_node *node;    /* Syntax tree of this equation. */
+	struct eqn_def	 *defs;    /* Array of definitions. */
+	char		 *data;    /* Source code of this equation. */
+	char		 *start;   /* First byte of the current token. */
+	char		 *end;	   /* First byte of the next token. */
+	size_t		  defsz;   /* Number of definitions. */
+	size_t		  sz;      /* Length of the source code. */
+	size_t		  toksz;   /* Length of the current token. */
+	int		  gsize;   /* Default point size. */
+	int		  delim;   /* In-line delimiters enabled. */
+	char		  odelim;  /* In-line opening delimiter. */
+	char		  cdelim;  /* In-line closing delimiter. */
+};
+
+
+struct eqn_node	*eqn_alloc(struct mparse *);
+void		 eqn_box_free(struct eqn_box *);
+void		 eqn_free(struct eqn_node *);
+void		 eqn_parse(struct eqn_node *);
+void		 eqn_read(struct eqn_node *, const char *);
+void		 eqn_reset(struct eqn_node *);