stringswitch.h

   1 #ifndef STRINGSWITCH_H
   2 #define STRINGSWITCH_H
   3
   4 #include <string.h>
   5
   6 #define stringswitch_enumerator_name(N) strswitch_enumerator_##N
   7 #define stringswitch_enumerator_member_name(N, X) strswitch_enumerator_##N##_member_##X
   8 #define stringswitch_enumerator_length_name(N) strswitch_enumerator_##N##_length
   9 #define stringswitch_enumerator_value_name(N) strswitch_enumerator_##N##_value
  10 #define stringswitch_enumerator_eval_func(N) strswitch_enumerator_eval_func_##N
  11 #define stringswitch_enumerator_default_member_name(N) stringswitch_enumerator_member_name(N, DEFAULT__________)
  12
  13 #define stringswitch_l(N, X, L) int stringswitch_enumerator_value_name(N) = stringswitch_enumerator_eval_func(N)((X), (L)); \
  14         switch(stringswitch_enumerator_value_name(N))
  15
  16 // for "dynamic" strings, i.e. non-literals
  17 #define stringswitch_d(N, X) size_t stringswitch_enumerator_length_name(N) = strlen(X); stringswitch_l(N, X, stringswitch_enumerator_length_name(N))
  18 // for static stringliterals
  19 #define stringswitch_s(N, X) stringswitch_l(N, X, sizeof(X) - 1)
  20
  21 #define stringcase(N, X) case stringswitch_enumerator_member_name(N, X)
  22 #define stringcase_default(N) case stringswitch_enumerator_default_member_name(N): default
  23
  24 #endif