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/* Graphical symbols.
Copyright (C) 2020-2021 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef GLYPHS_H
# define GLYPHS_H
/* Initialize the following variables. */
void glyphs_init (void);
/* In gnulib/lib/unicodeio.h unicode_to_mb uses a buffer of 25 bytes.
In down_arrow, we append one space. */
typedef char glyph_buffer_t[26];
/* "→", separates the lhs of a rule from its rhs. */
extern glyph_buffer_t arrow;
extern int arrow_width;
/* "•", a point in an item (aka, a dotted rule). */
extern glyph_buffer_t dot;
extern int dot_width;
/* "↳ ", below an lhs to announce the rhs. */
extern glyph_buffer_t down_arrow;
extern int down_arrow_width;
/* "ε", an empty rhs. */
extern glyph_buffer_t empty;
extern int empty_width;
/* " ", separate symbols in the rhs of a derivation. */
extern const char *derivation_separator;
extern int derivation_separator_width;
#endif /* GLYPHS_H */
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