git.ozlabs.org Git - ccan/blob - tools/ccanlint/tests/hash_if.c

   1 #include <tools/ccanlint/ccanlint.h>
   2 #include <tools/tools.h>
   3 #include <ccan/str/str.h>
   4 #include <ccan/foreach/foreach.h>
   5 #include <sys/types.h>
   6 #include <sys/stat.h>
   7 #include <fcntl.h>
   8 #include <unistd.h>
   9 #include <limits.h>
  10 #include <errno.h>
  11 #include <stdlib.h>
  12 #include <stdio.h>
  13 #include <err.h>
  14 #include <string.h>
  15 #include <ctype.h>
  16
  17 static void check_hash_if(struct manifest *m,
  18                           unsigned int *timeleft UNNEEDED,
  19                           struct score *score)
  20 {
  21         struct list_head *list;
  22         const char *explanation =
  23         "\n\t(#if works like #ifdef, but with gcc's -Wundef, we can detect\n"
  24         "\tmistyped or unknown configuration options)";
  25
  26         /* We don't fail ccanlint for this. */
  27         score->pass = true;
  28
  29         foreach_ptr(list, &m->c_files, &m->h_files,
  30                     &m->run_tests, &m->api_tests,
  31                     &m->compile_ok_tests, &m->compile_fail_tests,
  32                     &m->other_test_c_files) {
  33                 struct ccan_file *f;
  34
  35                 list_for_each(list, f, list) {
  36                         unsigned int i;
  37                         char **lines = get_ccan_file_lines(f);
  38
  39                         for (i = 0; lines[i]; i++) {
  40                                 const char *line = lines[i];
  41                                 char *sym;
  42
  43                                 if (!get_token(&line, "#"))
  44                                         continue;
  45                                 if (!(get_token(&line, "if")
  46                                       && get_token(&line, "defined")
  47                                       && get_token(&line, "("))
  48                                     && !get_token(&line, "ifdef"))
  49                                         continue;
  50
  51                                 sym = get_symbol_token(lines, &line);
  52                                 if (!sym || !strstarts(sym, "HAVE_"))
  53                                         continue;
  54                                 score_file_error(score, f, i+1,
  55                                                  "%s should be tested with #if"
  56                                                  "%s",
  57                                                  sym, explanation);
  58                                 explanation = "";
  59                         }
  60                 }
  61         }
  62
  63         if (!score->error) {
  64                 score->score = score->total;
  65         }
  66 }
  67
  68 struct ccanlint hash_if = {
  69         .key = "hash_if",
  70         .name = "Features are checked with #if not #ifdef",
  71         .check = check_hash_if,
  72         .needs = "info_exists"
  73 };
  74
  75 REGISTER_TEST(hash_if);