X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/dd5611579b3978eff5c4aa22dc8459b8f53c2fc0..049016237e8ad3666609295234ed550e66cc185c:/src/system.h
diff --git a/src/system.h b/src/system.h
index 1c02f253..3a82e7f3 100644
--- a/src/system.h
+++ b/src/system.h
@@ -16,51 +16,51 @@
along with this program. If not, see . */
#ifndef BISON_SYSTEM_H
-#define BISON_SYSTEM_H
+# define BISON_SYSTEM_H
/* flex 2.5.31 gratutiously defines macros like INT8_MIN. But this
runs afoul of pre-C99 compilers that have or
, which are included below if available. It also runs
afoul of pre-C99 compilers that define these macros in . */
-#if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901
-# undef INT8_MIN
-# undef INT16_MIN
-# undef INT32_MIN
-# undef INT8_MAX
-# undef INT16_MAX
-# undef UINT8_MAX
-# undef INT32_MAX
-# undef UINT16_MAX
-# undef UINT32_MAX
-#endif
-
-#include
-#include
-#include
-#include
-
-#if HAVE_SYS_TYPES_H
-# include
-#endif
-
-#include
-#include
-
-#ifndef UINTPTR_MAX
+# if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901
+# undef INT8_MIN
+# undef INT16_MIN
+# undef INT32_MIN
+# undef INT8_MAX
+# undef INT16_MAX
+# undef UINT8_MAX
+# undef INT32_MAX
+# undef UINT16_MAX
+# undef UINT32_MAX
+# endif
+
+# include
+# include
+# include
+# include
+# include
+# include
+
+#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
+#define STREQ(L, R) (strcmp(L, R) == 0)
+#define STRNEQ(L, R) (!STREQ(L, R))
+
+# ifndef UINTPTR_MAX
/* This isn't perfect, but it's good enough for Bison, which needs
only to hash pointers. */
typedef size_t uintptr_t;
-#endif
+# endif
-#include
+// Version mismatch.
+# define EX_MISMATCH 63
/*---------.
| Gnulib. |
`---------*/
-#include
-#include
-#include
+# include
+# include
+# include
/*-----------------.
@@ -79,49 +79,48 @@ typedef size_t uintptr_t;
and safer logic than it would for users. Due to the overhead of M4,
suppressing Code is unlikely to offer any significant improvement in
Bison's performance anyway. */
-#define PACIFY_CC(Code) Code
+# define PACIFY_CC(Code) Code
-#ifndef __attribute__
+# ifndef __attribute__
/* This feature is available in gcc versions 2.5 and later. */
-# if (! defined __GNUC__ || __GNUC__ < 2 \
- || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
-# define __attribute__(Spec) /* empty */
+# if (! defined __GNUC__ || __GNUC__ < 2 \
+ || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
+# define __attribute__(Spec) /* empty */
+# endif
# endif
-#endif
/* The __-protected variants of `format' and `printf' attributes
are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
-#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
-# define __format__ format
-# define __printf__ printf
-#endif
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf
+# endif
-#ifndef ATTRIBUTE_NORETURN
-# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
-#endif
+# ifndef ATTRIBUTE_NORETURN
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
+# endif
-#ifndef ATTRIBUTE_UNUSED
-# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
-#endif
+# ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+# endif
-#define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)
/*------.
| NLS. |
`------*/
-#include
+# include
-#include
-#define _(Msgid) gettext (Msgid)
-#define N_(Msgid) (Msgid)
+# include
+# define _(Msgid) gettext (Msgid)
+# define N_(Msgid) (Msgid)
/*-----------.
| Booleans. |
`-----------*/
-#include
+# include
@@ -147,66 +146,79 @@ typedef size_t uintptr_t;
For now, we use assert but we call it aver throughout Bison in case
we later wish to try another scheme.
*/
-#include
-#define aver assert
+# include
+# define aver assert
/*-----------.
| Obstacks. |
`-----------*/
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-#include
+# define obstack_chunk_alloc xmalloc
+# define obstack_chunk_free free
+# include
-#define obstack_sgrow(Obs, Str) \
+# define obstack_sgrow(Obs, Str) \
obstack_grow (Obs, Str, strlen (Str))
-#define obstack_fgrow1(Obs, Format, Arg1) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1); \
- obstack_grow (Obs, buf, strlen (buf)); \
-} while (0)
+/* Output Str escaped for our postprocessing (i.e., escape M4 special
+ characters).
-#define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1, Arg2); \
- obstack_grow (Obs, buf, strlen (buf)); \
-} while (0)
+ For instance "[foo]" -> "@{foo@}", "$$" -> "$][$][". */
-#define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1, Arg2, Arg3); \
- obstack_grow (Obs, buf, strlen (buf)); \
-} while (0)
+# define obstack_escape(Obs, Str) \
+ do { \
+ char const *p; \
+ for (p = Str; *p; p++) \
+ switch (*p) \
+ { \
+ case '$': obstack_sgrow (Obs, "$]["); break; \
+ case '@': obstack_sgrow (Obs, "@@" ); break; \
+ case '[': obstack_sgrow (Obs, "@{" ); break; \
+ case ']': obstack_sgrow (Obs, "@}" ); break; \
+ default: obstack_1grow (Obs, *p ); break; \
+ } \
+ } while (0)
-#define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4); \
- obstack_grow (Obs, buf, strlen (buf)); \
-} while (0)
+/* Output Str both quoted for M4 (i.e., embed in [[...]]), and escaped
+ for our postprocessing (i.e., escape M4 special characters). If
+ Str is empty (or NULL), output "[]" instead of "[[]]" as it make M4
+ programming easier (m4_ifval can be used).
+
+ For instance "[foo]" -> "[[@{foo@}]]", "$$" -> "[[$][$][]]". */
+
+# define obstack_quote(Obs, Str) \
+ do { \
+ char const* obstack_quote_p = Str; \
+ if (obstack_quote_p && obstack_quote_p[0]) \
+ { \
+ obstack_sgrow (Obs, "[["); \
+ obstack_escape (Obs, obstack_quote_p); \
+ obstack_sgrow (Obs, "]]"); \
+ } \
+ else \
+ obstack_sgrow (Obs, "[]"); \
+ } while (0)
+
+
+/* Append the ending 0, finish Obs, and return the string. */
+
+# define obstack_finish0(Obs) \
+ (obstack_1grow (Obs, '\0'), (char *) obstack_finish (Obs))
/*-----------------------------------------.
| Extensions to use for the output files. |
`-----------------------------------------*/
-#ifndef OUTPUT_EXT
-# define OUTPUT_EXT ".output"
-#endif
-
-#ifndef TAB_EXT
-# define TAB_EXT ".tab"
-#endif
+# ifndef OUTPUT_EXT
+# define OUTPUT_EXT ".output"
+# endif
-#ifndef DEFAULT_TMPDIR
-# define DEFAULT_TMPDIR "/tmp"
-#endif
+# ifndef TAB_EXT
+# define TAB_EXT ".tab"
+# endif
@@ -214,15 +226,15 @@ do { \
| Free a linked list. |
`---------------------*/
-#define LIST_FREE(Type, List) \
-do { \
- Type *_node, *_next; \
- for (_node = List; _node; _node = _next) \
- { \
- _next = _node->next; \
- free (_node); \
- } \
-} while (0)
+# define LIST_FREE(Type, List) \
+ do { \
+ Type *_node, *_next; \
+ for (_node = List; _node; _node = _next) \
+ { \
+ _next = _node->next; \
+ free (_node); \
+ } \
+ } while (0)
/*---------------------------------------------.