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

   1 #include <tools/ccanlint/ccanlint.h>
   2 #include <tools/tools.h>
   3 #include <ccan/talloc/talloc.h>
   4 #include <ccan/grab_file/grab_file.h>
   5 #include <ccan/str/str.h>
   6 #include <sys/types.h>
   7 #include <sys/stat.h>
   8 #include <fcntl.h>
   9 #include <unistd.h>
  10 #include <limits.h>
  11 #include <errno.h>
  12 #include <stdlib.h>
  13 #include <stdio.h>
  14 #include <err.h>
  15 #include <string.h>
  16 #include <ctype.h>
  17
  18 static const char *can_build(struct manifest *m)
  19 {
  20         if (safe_mode)
  21                 return "Safe mode enabled";
  22         return NULL;
  23 }
  24
  25 static struct ccan_file *main_header(struct manifest *m)
  26 {
  27         struct ccan_file *f;
  28
  29         list_for_each(&m->h_files, f, list) {
  30                 if (strstarts(f->name, m->basename)
  31                     && strlen(f->name) == strlen(m->basename) + 2)
  32                         return f;
  33         }
  34         /* Should not happen: we depend on main_header_compiles */
  35         abort();
  36 }
  37
  38 static void check_headers_no_cpp(struct manifest *m,
  39                                  bool keep,
  40                                  unsigned int *timeleft, struct score *score)
  41 {
  42         char *contents;
  43         char *tmpsrc, *tmpobj, *cmdout;
  44         int fd;
  45         struct ccan_file *mainh = main_header(m);
  46
  47         tmpsrc = maybe_temp_file(m, "-included.c", keep, mainh->fullname);
  48         tmpobj = maybe_temp_file(m, ".o", keep, tmpsrc);
  49
  50         /* We don't fail you for this. */
  51         score->pass = true;
  52         fd = open(tmpsrc, O_WRONLY | O_CREAT | O_EXCL, 0600);
  53         if (fd < 0)
  54                 err(1, "Creating temporary file %s", tmpsrc);
  55
  56         contents = talloc_asprintf(tmpsrc,
  57                    "#define class #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  58                    "#define private #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  59                    "#define public #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  60                    "#define protected #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  61                    "#define template #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  62                    "#define this #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  63                    "#define new #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  64                    "#define delete #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  65                    "#define friend #DONT_USE_CPLUSPLUS_RESERVED_NAMES\n"
  66                    "#include <ccan/%s/%s.h>\n",
  67                                    m->basename, m->basename);
  68         if (write(fd, contents, strlen(contents)) != strlen(contents))
  69                 err(1, "writing to temporary file %s", tmpsrc);
  70         close(fd);
  71
  72         if (compile_object(score, tmpsrc, ccan_dir, compiler, cflags,
  73                            tmpobj, &cmdout)) {
  74                 score->score = score->total;
  75         } else {
  76                 score->error = talloc_asprintf(score,
  77                                        "Main header file with C++ names:\n%s",
  78                                        cmdout);
  79         }
  80 }
  81
  82 struct ccanlint avoids_cpp_reserved = {
  83         .key = "avoids_cpp_reserved",
  84         .name = "Modules main header compiles without C++ reserved words",
  85         .check = check_headers_no_cpp,
  86         .can_run = can_build,
  87         .needs = "main_header_compiles"
  88 };
  89
  90 REGISTER_TEST(avoids_cpp_reserved);