t/normalize.c

   1 /*
   2  * Helper application to test normalization of declaration specifiers.
   3  * Copyright © 2021-2024 Nick Bowler
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <config.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <getopt.h>
  24
  25 #include "cdecl.h"
  26 #include "cdecl-internal.h"
  27
  28 #define PROGNAME "normalize"
  29 #include "test.h"
  30
  31 static const char sopts[] = "f:VH";
  32 static const struct option lopts[] = {
  33         { "file", 1, NULL, 'f' },
  34         { "version", 0, NULL, 'V' },
  35         { "help", 0, NULL, 'H' },
  36         { 0 }
  37 };
  38
  39 static void print_usage(FILE *f)
  40 {
  41         fprintf(f, "Usage: %s [options]\n", progname);
  42 }
  43
  44 static void print_help(void)
  45 {
  46         const struct option *opt;
  47
  48         print_usage(stdout);
  49         puts("Test normalization of declaration specifiers.\n");
  50         test_print_options(lopts);
  51 }
  52
  53 static unsigned to_spectype(const char *tok)
  54 {
  55         if (!strcmp(tok, "typedef")) return CDECL_STOR_TYPEDEF;
  56         if (!strcmp(tok, "extern")) return CDECL_STOR_EXTERN;
  57         if (!strcmp(tok, "static")) return CDECL_STOR_STATIC;
  58         if (!strcmp(tok, "auto")) return CDECL_STOR_AUTO;
  59         if (!strcmp(tok, "register")) return CDECL_STOR_REGISTER;
  60         if (!strcmp(tok, "inline")) return CDECL_FUNC_INLINE;
  61         if (!strcmp(tok, "restrict")) return CDECL_QUAL_RESTRICT;
  62         if (!strcmp(tok, "volatile")) return CDECL_QUAL_VOLATILE;
  63         if (!strcmp(tok, "const")) return CDECL_QUAL_CONST;
  64         if (!strcmp(tok, "void")) return CDECL_TYPE_VOID;
  65         if (!strcmp(tok, "signed")) return CDECL_TYPE_SIGNED;
  66         if (!strcmp(tok, "unsigned")) return CDECL_TYPE_UNSIGNED;
  67         if (!strcmp(tok, "char")) return CDECL_TYPE_CHAR;
  68         if (!strcmp(tok, "short")) return CDECL_TYPE_SHORT;
  69         if (!strcmp(tok, "long")) return CDECL_TYPE_LONG;
  70         if (!strcmp(tok, "int")) return CDECL_TYPE_INT;
  71         if (!strcmp(tok, "float")) return CDECL_TYPE_FLOAT;
  72         if (!strcmp(tok, "double")) return CDECL_TYPE_DOUBLE;
  73         if (!strcmp(tok, "_Complex")) return CDECL_TYPE_COMPLEX;
  74         if (!strcmp(tok, "_Imaginary")) return CDECL_TYPE_IMAGINARY;
  75         if (!strcmp(tok, "_Bool")) return CDECL_TYPE_BOOL;
  76         if (!strcmp(tok, "struct")) return CDECL_TYPE_STRUCT;
  77         if (!strcmp(tok, "union")) return CDECL_TYPE_UNION;
  78         if (!strcmp(tok, "enum")) return CDECL_TYPE_ENUM;
  79
  80         return CDECL_TYPE_IDENT;
  81 }
  82
  83 static const char *to_specstring(unsigned type)
  84 {
  85         switch (type) {
  86         case CDECL_STOR_TYPEDEF: return "typedef";
  87         case CDECL_STOR_EXTERN: return "extern";
  88         case CDECL_STOR_STATIC: return "static";
  89         case CDECL_STOR_AUTO: return "auto";
  90         case CDECL_STOR_REGISTER: return "register";
  91         case CDECL_FUNC_INLINE: return "inline";
  92         case CDECL_QUAL_RESTRICT: return "restrict";
  93         case CDECL_QUAL_VOLATILE: return "volatile";
  94         case CDECL_QUAL_CONST: return "const";
  95         case CDECL_TYPE_VOID: return "void";
  96         case CDECL_TYPE_SIGNED: return "signed";
  97         case CDECL_TYPE_UNSIGNED: return "unsigned";
  98         case CDECL_TYPE_CHAR: return "char";
  99         case CDECL_TYPE_SHORT: return "short";
 100         case CDECL_TYPE_LONG: return "long";
 101         case CDECL_TYPE_INT: return "int";
 102         case CDECL_TYPE_FLOAT: return "float";
 103         case CDECL_TYPE_DOUBLE: return "double";
 104         case CDECL_TYPE_COMPLEX: return "_Complex";
 105         case CDECL_TYPE_IMAGINARY: return "_Imaginary";
 106         case CDECL_TYPE_BOOL: return "_Bool";
 107         case CDECL_TYPE_STRUCT: return "struct";
 108         case CDECL_TYPE_UNION: return "union";
 109         case CDECL_TYPE_ENUM: return "enum";
 110         }
 111
 112         return "";
 113 }
 114
 115 static void print_spec(struct cdecl_declspec *spec)
 116 {
 117         const char *s = to_specstring(spec->type);
 118
 119         printf("%s", s);
 120         if (spec->ident) {
 121                 if (s[0])
 122                         putchar(' ');
 123                 printf("%s", spec->ident);
 124         }
 125 }
 126
 127 int do_normalize(char *line, size_t n)
 128 {
 129         struct cdecl_declspec *s, *specs = NULL, **newspec = &specs;
 130         char *tok = NULL;
 131
 132         while ((tok = strtok(tok ? NULL : line, " "))) {
 133                 struct cdecl_declspec *spec = malloc_nofail(sizeof *spec);
 134
 135                 spec->next = NULL;
 136                 spec->ident = NULL;
 137                 spec->type = to_spectype(tok);
 138                 switch (spec->type) {
 139                 case CDECL_TYPE_STRUCT:
 140                 case CDECL_TYPE_UNION:
 141                 case CDECL_TYPE_ENUM:
 142                         spec->ident = strtok(NULL, " ");
 143                         break;
 144                 case CDECL_TYPE_IDENT:
 145                         spec->ident = tok;
 146                 }
 147
 148                 *newspec = spec;
 149                 newspec = &spec->next;
 150         }
 151
 152         specs = cdecl__normalize_specs(specs);
 153         for (s = specs; s; s = s->next) {
 154                 print_spec(s);
 155                 if (s->next)
 156                         putchar(' ');
 157         }
 158         putchar('\n');
 159
 160         while (specs) {
 161                 struct cdecl_declspec *c = specs;
 162                 specs = specs->next;
 163                 free(c);
 164         }
 165
 166         return 0;
 167 }
 168
 169 int main(int argc, char **argv)
 170 {
 171         int opt, ret = EXIT_SUCCESS;
 172         char *filename = NULL, *line = NULL;
 173         FILE *infile = stdin;
 174         size_t n = 0;
 175         ssize_t rc;
 176
 177         while ((opt = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
 178                 switch (opt) {
 179                 case 'f':
 180                         filename = optarg;
 181                         break;
 182                 case 'V':
 183                         test_print_version(PROGNAME);
 184                         return EXIT_SUCCESS;
 185                 case 'H':
 186                         print_help();
 187                         return EXIT_SUCCESS;
 188                 default:
 189                         print_usage(stderr);
 190                         return EXIT_FAILURE;
 191                 }
 192         }
 193
 194         if (filename) {
 195                 infile = fopen(filename, "r");
 196                 if (!infile) {
 197                         perror(filename);
 198                         return EXIT_FAILURE;
 199                 }
 200         }
 201
 202         while ((rc = getline(&line, &n, infile)) >= 0) {
 203                 if (rc > 0 && line[rc-1] == '\n')
 204                         line[rc-1] = 0;
 205                 if (do_normalize(line, n) < 0)
 206                         ret = EXIT_FAILURE;
 207         }
 208
 209         free(line);
 210         return ret;
 211 }