X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/24bb5f8fb7f14df4050cbefd27ae60fa9cef259d..0fe9720964da510a2b359af390a3053aace65f9f:/src/flex-scanner.h?ds=sidebyside

diff --git a/src/flex-scanner.h b/src/flex-scanner.h
index 23a266ac..9c111aa2 100644
--- a/src/flex-scanner.h
+++ b/src/flex-scanner.h
@@ -21,7 +21,14 @@
 # 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);
@@ -33,6 +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)
 
@@ -51,12 +59,7 @@ int   FLEX_PREFIX (lex_destroy) (void);
    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 !defined YY_FLEX_MAJOR_VERSION || YY_FLEX_MAJOR_VERSION < 2 \
-    || (YY_FLEX_MAJOR_VERSION == 2 \
-        && (!defined YY_FLEX_MINOR_VERSION || YY_FLEX_MINOR_VERSION < 5 \
-            || (YY_FLEX_MINOR_VERSION == 5 \
-                && (!defined YY_FLEX_SUBMINOR_VERSION \
-                    || YY_FLEX_SUBMINOR_VERSION < 9))))
+#if FLEX_VERSION <= 2005009
 # define yylex_destroy() yy_delete_buffer (YY_CURRENT_BUFFER)
 #endif
 
@@ -73,16 +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