X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0601c3bf0f4dda2617ff90a3d419a4e0e387c0b1..f6df83b4e80b2a53c08b5dc654e247076a3b9b03:/src/system.h

diff --git a/src/system.h b/src/system.h
index 06fd0f0a..6355141a 100644
--- a/src/system.h
+++ b/src/system.h
@@ -39,9 +39,18 @@
 # include <stdlib.h>
 # include <string.h>
 
-# if HAVE_SYS_TYPES_H
-#  include <sys/types.h>
-# endif
+# define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
+# define STREQ(L, R)  (strcmp(L, R) == 0)
+# define STRNEQ(L, R) (!STREQ(L, R))
+
+/* Just like strncmp, but the second argument must be a literal string
+   and you don't specify the length.  */
+# define STRNCMP_LIT(S, Literal)                        \
+  strncmp (S, "" Literal "", sizeof (Literal) - 1)
+
+/* Whether Literal is a prefix of S.  */
+# define STRPREFIX_LIT(Literal, S)              \
+  (STRNCMP_LIT (S, Literal) == 0)
 
 # include <unistd.h>
 # include <inttypes.h>
@@ -52,7 +61,7 @@
 typedef size_t uintptr_t;
 # endif
 
-// Version mismatch.
+/* Version mismatch. */
 # define EX_MISMATCH 63
 
 /*---------.
@@ -105,7 +114,6 @@ typedef size_t uintptr_t;
 #  define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 # endif
 
-# define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)
 
 /*------.
 | NLS.  |
@@ -160,37 +168,10 @@ typedef size_t uintptr_t;
 # define obstack_chunk_free  free
 # include <obstack.h>
 
-# 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)
-
-# define obstack_fgrow2(Obs, Format, Arg1, Arg2)        \
-  do {                                                  \
-    char buf[4096];                                     \
-    sprintf (buf, Format, Arg1, Arg2);                  \
-    obstack_grow (Obs, buf, strlen (buf));              \
-  } while (0)
-
-# 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_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)
+/* String-grow: append Str to Obs.  */
 
+# define obstack_sgrow(Obs, Str) \
+  obstack_grow (Obs, Str, strlen (Str))
 
 /* Output Str escaped for our postprocessing (i.e., escape M4 special
    characters).
@@ -199,15 +180,15 @@ typedef size_t uintptr_t;
 
 # define obstack_escape(Obs, Str)                       \
   do {                                                  \
-    char const *p;                                      \
-    for (p = Str; *p; p++)                              \
-      switch (*p)                                       \
+    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;    \
+        default:  obstack_1grow (Obs, *p__ ); break;    \
         }                                               \
   } while (0)
 
@@ -233,7 +214,10 @@ typedef size_t uintptr_t;
   } while (0)
 
 
+/* Append the ending 0, finish Obs, and return the string.  */
 
+# define obstack_finish0(Obs)                                   \
+  (obstack_1grow (Obs, '\0'), (char *) obstack_finish (Obs))
 
 
 /*-----------------------------------------.