pd.if.org Git - lice/blob - opt.c

   1 #include "opt.h"
   2
   3 static const opt_extension_t opt_extension_matrix[] = {
   4     /*
   5      * same as GNUC but no dollar identifiers, they don't make much sense
   6      * and in C11 mode, opposed to GNUC which is C99
   7      */
   8     [STANDARD_LICEC] = EXTENSION_TYPEOF          | EXTENSION_OMITOPCOND      |
   9                        EXTENSION_STATEMENTEXPRS  | EXTENSION_NOMEMBERSTRUCT  |
  10                        EXTENSION_CASERANGES      | EXTENSION_ESCCHAR         |
  11                        EXTENSION_INCOMPLETEENUM  | EXTENSION_BINARYCONSTANTS |
  12                        EXTENSION_ARITHMETICVOID  | EXTENSION_LABELASVALUES   |
  13                        EXTENSION_ZEROARRAYS      | EXTENSION_ZEROARRAYS      |
  14                        EXTENSION_NONCONSTINIT    | EXTENSION_NONSTANDARD,
  15
  16     /*
  17      * standard GNUC format, TODO: -std=gnuc90, which is the same as this
  18      * but C90, instead of C90
  19      */
  20     [STANDARD_GNUC]  = EXTENSION_TYPEOF          | EXTENSION_OMITOPCOND      |
  21                        EXTENSION_STATEMENTEXPRS  | EXTENSION_NOMEMBERSTRUCT  |
  22                        EXTENSION_CASERANGES      | EXTENSION_ESCCHAR         |
  23                        EXTENSION_INCOMPLETEENUM  | EXTENSION_BINARYCONSTANTS |
  24                        EXTENSION_ARITHMETICVOID  | EXTENSION_LABELASVALUES   |
  25                        EXTENSION_ZEROARRAYS      | EXTENSION_ZEROARRAYS      |
  26                        EXTENSION_NONCONSTINIT    | EXTENSION_DOLLAR          |
  27                        EXTENSION_NONSTANDARD,
  28
  29     [STANDARD_C90]   = 0,
  30     [STANDARD_C99]   = 0,
  31     [STANDARD_C11]   = 0
  32 };
  33
  34 static opt_std_t       standard   = STANDARD_LICEC;
  35 static opt_extension_t extensions = ~0;
  36
  37 bool opt_std_test(opt_std_t std) {
  38     return (standard == std);
  39 }
  40
  41 bool opt_extension_test(opt_extension_t ext) {
  42     return (extensions & ext);
  43 }
  44
  45 void opt_std_set(opt_std_t std) {
  46     standard   = std;
  47     extensions = opt_extension_matrix[std];
  48 }
  49
  50 void opt_extension_set(opt_extension_t ext) {
  51     if (opt_extension_matrix[standard] & ext)
  52         extensions &= ext;
  53 }