test-ctype: macrofy

Rewrite test-ctype to use a global variable and a macro instead of
wrapper functions for each character class and complicated structs
with loops going through them.  The resulting code may be uglier,
but that's OK for a test program, and it's actually easier to read
and extend.  And much shorter.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/test-ctype.c b/test-ctype.c
index 033c74911ed035ed36b16b0e2bf7327d6cdc5823..b4d1f74e2d63ff4968cd1ac9f66a205963edaaf7 100644 (file)
--- a/test-ctype.c
+++ b/test-ctype.c
@@ -1,78 +1,41 @@
 #include "cache.h"
 
+static int rc;
 
-static int test_isdigit(int c)
+static void report_error(const char *class, int ch)
 {
-       return isdigit(c);
+       printf("%s classifies char %d (0x%02x) wrongly\n", class, ch, ch);
+       rc = 1;
 }
 
-static int test_isspace(int c)
+static int is_in(const char *s, int ch)
 {
-       return isspace(c);
+       /* We can't find NUL using strchr.  It's classless anyway. */
+       if (ch == '\0')
+               return 0;
+       return !!strchr(s, ch);
 }
 
-static int test_isalpha(int c)
-{
-       return isalpha(c);
-}
-
-static int test_isalnum(int c)
-{
-       return isalnum(c);
-}
-
-static int test_is_glob_special(int c)
-{
-       return is_glob_special(c);
-}
-
-static int test_is_regex_special(int c)
-{
-       return is_regex_special(c);
+#define TEST_CLASS(t,s) {                      \
+       int i;                                  \
+       for (i = 0; i < 256; i++) {             \
+               if (is_in(s, i) != t(i))        \
+                       report_error(#t, i);    \
+       }                                       \
 }
 
 #define DIGIT "0123456789"
 #define LOWER "abcdefghijklmnopqrstuvwxyz"
 #define UPPER "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 
-static const struct ctype_class {
-       const char *name;
-       int (*test_fn)(int);
-       const char *members;
-} classes[] = {
-       { "isdigit", test_isdigit, DIGIT },
-       { "isspace", test_isspace, " \n\r\t" },
-       { "isalpha", test_isalpha, LOWER UPPER },
-       { "isalnum", test_isalnum, LOWER UPPER DIGIT },
-       { "is_glob_special", test_is_glob_special, "*?[\\" },
-       { "is_regex_special", test_is_regex_special, "$()*+.?[\\^{|" },
-       { NULL }
-};
-
-static int test_class(const struct ctype_class *test)
-{
-       int i, rc = 0;
-
-       for (i = 0; i < 256; i++) {
-               int expected = i ? !!strchr(test->members, i) : 0;
-               int actual = test->test_fn(i);
-
-               if (actual != expected) {
-                       rc = 1;
-                       printf("%s classifies char %d (0x%02x) wrongly\n",
-                              test->name, i, i);
-               }
-       }
-       return rc;
-}
-
 int main(int argc, char **argv)
 {
-       const struct ctype_class *test;
-       int rc = 0;
-
-       for (test = classes; test->name; test++)
-               rc |= test_class(test);
+       TEST_CLASS(isdigit, DIGIT);
+       TEST_CLASS(isspace, " \n\r\t");
+       TEST_CLASS(isalpha, LOWER UPPER);
+       TEST_CLASS(isalnum, LOWER UPPER DIGIT);
+       TEST_CLASS(is_glob_special, "*?[\\");
+       TEST_CLASS(is_regex_special, "$()*+.?[\\^{|");
 
        return rc;
 }