a1663ad571346cc6e221e17e5c506e56031e8f78
[ccan] / 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);