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/* Common parts between scan-code.l, scan-gram.l, and scan-skel.l.
Copyright (C) 2006, 2009-2015, 2018-2021 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 FLEX_PREFIX
# error "FLEX_PREFIX not defined"
#endif
/* Flex full version as a number. */
#define FLEX_VERSION \
((YY_FLEX_MAJOR_VERSION) * 1000000 \
+ (YY_FLEX_MINOR_VERSION) * 1000 \
+ (YY_FLEX_SUBMINOR_VERSION))
// Pacify warnings in yy_init_buffer (observed with Flex 2.6.4 and GCC
// 6.4.0 and 7.3.0).
//
// ./src/scan-skel.c: In function 'skel_restart':
// ./src/scan-skel.c:2035:20: error: potential null pointer dereference [-Werror=null-dereference]
// b->yy_fill_buffer = 1;
// ~~~~~~~~~~~~~~~~~~^~~
// ./src/scan-skel.c:2031:19: error: potential null pointer dereference [-Werror=null-dereference]
// b->yy_input_file = file;
// ~~~~~~~~~~~~~~~~~^~~~~~
#if defined __GNUC__ && ! defined __clang__ && 6 <= __GNUC__
# pragma GCC diagnostic ignored "-Wnull-dereference"
#endif
// Old versions of Flex (2.5.35) generate an incomplete documentation comment.
//
// In file included from src/scan-code-c.c:3:
// src/scan-code.c:2198:21: error: empty paragraph passed to '@param' command
// [-Werror,-Wdocumentation]
// * @param line_number
// ~~~~~~~~~~~~~~~~~^
// 1 error generated.
#if FLEX_VERSION <= 20060000 && defined __clang__
# pragma clang diagnostic ignored "-Wdocumentation"
#endif
/* Pacify "gcc -Wmissing-prototypes" when flex 2.5.31 is used. */
#if FLEX_VERSION <= 2005031
int FLEX_PREFIX (get_lineno) (void);
FILE *FLEX_PREFIX (get_in) (void);
FILE *FLEX_PREFIX (get_out) (void);
int FLEX_PREFIX (get_leng) (void);
char *FLEX_PREFIX (get_text) (void);
void FLEX_PREFIX (set_lineno) (int);
void FLEX_PREFIX (set_in) (FILE *);
void FLEX_PREFIX (set_out) (FILE *);
int FLEX_PREFIX (get_debug) (void);
void FLEX_PREFIX (set_debug) (int);
int FLEX_PREFIX (lex_destroy) (void);
#endif
#define last_string FLEX_PREFIX (last_string)
/* It seems to be a nice "feature" of Flex that one cannot use yytext,
yyleng etc. when a prefix is given, since there is no longer a
#define, but rather the token is actually changed in the output.
However, this is not true for Flex 2.5.4. */
#ifndef yyleng
# define yyleng FLEX_PREFIX (leng)
#endif
#ifndef yytext
# define yytext FLEX_PREFIX (text)
#endif
/* Non-reentrant scanners generated by Flex 2.5.9 and later (and some earlier
versions according to the Flex manual) leak memory if yylex_destroy is not
invoked. However, yylex_destroy is not defined before Flex 2.5.9, so give
an implementation here that at least appears to work with Flex 2.5.4. */
#if FLEX_VERSION <= 2005009
# define yylex_destroy() yy_delete_buffer (YY_CURRENT_BUFFER)
#endif
/* OBSTACK_FOR_STRING -- Used to store all the characters that we need to
keep (to construct ID, STRINGS etc.). Use the following macros to
use it.
Use STRING_GROW () to append what has just been matched, and
STRING_FINISH () to end the string (it puts the ending 0).
STRING_FINISH () also stores this string in LAST_STRING, which can be
used, and which is used by STRING_FREE () to free the last string. */
#ifndef FLEX_NO_OBSTACK
static struct obstack obstack_for_string;
# define STRING_GROW() \
obstack_grow (&obstack_for_string, yytext, yyleng)
# define STRING_FINISH() \
(last_string = obstack_finish0 (&obstack_for_string))
# define STRING_1GROW(Char) \
obstack_1grow (&obstack_for_string, Char)
# ifdef NDEBUG
# define STRING_FREE() \
obstack_free (&obstack_for_string, last_string)
# else
# define STRING_FREE() \
do { \
obstack_free (&obstack_for_string, last_string); \
last_string = NULL; \
} while (0)
# endif
#endif
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