X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f9bfc42aa704603fc3aeb18be00c78871569a0b4..c98b5143b071e351bdb820565681890046a6b45a:/src/flex-scanner.h diff --git a/src/flex-scanner.h b/src/flex-scanner.h index 3e16234c..d72986e8 100644 --- a/src/flex-scanner.h +++ b/src/flex-scanner.h @@ -1,12 +1,12 @@ /* Common parts between scan-code.l, scan-gram.l, and scan-skel.l. - Copyright (C) 2006 Free Software Foundation, Inc. + Copyright (C) 2006, 2009-2013 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 + 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 2 of the License, or + 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, @@ -15,16 +15,20 @@ 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, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - 02110-1301 USA -*/ + along with this program. If not, see . */ #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 "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); @@ -36,6 +40,7 @@ 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) @@ -50,6 +55,14 @@ int FLEX_PREFIX (lex_destroy) (void); # 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. @@ -63,16 +76,13 @@ int FLEX_PREFIX (lex_destroy) (void); static struct obstack obstack_for_string; -#define STRING_GROW \ +# define STRING_GROW \ obstack_grow (&obstack_for_string, yytext, yyleng) -#define STRING_FINISH \ - do { \ - obstack_1grow (&obstack_for_string, '\0'); \ - last_string = obstack_finish (&obstack_for_string); \ - } while (0) +# define STRING_FINISH \ + (last_string = obstack_finish0 (&obstack_for_string)) -#define STRING_FREE \ +# define STRING_FREE \ obstack_free (&obstack_for_string, last_string) #endif