C/C++ macro lib
Published:
Brief
Sometimes, we need to use macro to complete some miracle task. In this lib, you can use those macro to operate macro parameters.
Basic function
list
| func | desp |
|---|---|
| GET_MACRO_PARAS_TOTAL_NUM(…) | get count of macro paras. |
| GET_MACRO_PARA_N(N, …) | get macro para in order N. |
| GET_MACRO_PARAS_N_2_END(N, …) | get macro paras from order N to end. |
| GET_MACRO_PARAS_START_2_N(N, …) | get macro paras from order 0 to order N-1. |
| GET_MACRO_PARAS_N_2_M(N, M, …) | get macro paras from order N to order M-1. |
| GET_MACRO_PARAS_N_LEN(N, LEN, …) | get macro paras from order N to order N+LEN-1. |
| GET_MACRO_PARAS_RAM(N, …) | get N macro paras in ramdom order. |
| MACRO_PARAS_ENUM_OPT(opt, …) | provide ‘opt’ as a callback-func to every macro para. |
| MACRO_PARAS_ENUM_OPT_WITHOUT_LAST(opt, …) | provide opt as a callback-func to every macro para except the last one. |
| MACRO_PARAS_NOTDEAL_0PARAS(opt, …) | don’t deal when macro paras is none. |
examples
GET_MACRO_PARAS_TOTAL_NUM() // "0"
GET_MACRO_PARAS_TOTAL_NUM(a) // "1"
GET_MACRO_PARAS_TOTAL_NUM(a, b, c, d) // "4"
GET_MACRO_PARA_N(0, a, b, c, d) // "a"
GET_MACRO_PARA_N(1, a, b, c, d) // "b"
GET_MACRO_PARA_N(3, a, b, c, d) // "d"
GET_MACRO_PARAS_N_2_END(0, a, b, c, d) // "a, b, c, d"
GET_MACRO_PARAS_N_2_END(1, a, b, c, d) // "b, c, d"
GET_MACRO_PARAS_N_2_END(3, a, b, c, d) // "d"
GET_MACRO_PARAS_START_2_N(0, a, b, c, d) // ""
GET_MACRO_PARAS_START_2_N(1, a, b, c, d) // "a"
GET_MACRO_PARAS_START_2_N(3, a, b, c, d) // "a, b, c"
GET_MACRO_PARAS_N_2_M(0, 0, a, b, c, d) // ""
GET_MACRO_PARAS_N_2_M(0, 1, a, b, c, d) // "a"
GET_MACRO_PARAS_N_2_M(1, 2, a, b, c, d) // "b"
GET_MACRO_PARAS_N_2_M(1, 3, a, b, c, d) // "b, c"
GET_MACRO_PARAS_N_2_M(3, 3, a, b, c, d) // ""
GET_MACRO_PARAS_N_LEN(0, 0, a, b, c, d) // ""
GET_MACRO_PARAS_N_LEN(0, 1, a, b, c, d) // "a"
GET_MACRO_PARAS_N_LEN(0, 4, a, b, c, d) // "a, b, c, d"
GET_MACRO_PARAS_N_LEN(3, 1, a, b, c, d) // "d"
GET_MACRO_PARAS_N_LEN(4, 0, a, b, c, d) // ""
GET_MACRO_PARAS_RAM(0, a, b, c, d) // ""
GET_MACRO_PARAS_RAM(1, 0, a, b, c, d) // "a"
GET_MACRO_PARAS_RAM(1, 1, a, b, c, d) // "b"
GET_MACRO_PARAS_RAM(1, 3, a, b, c, d) // "d"
GET_MACRO_PARAS_RAM(2, 0, 3, a, b, c, d) // "a, d"
MACRO_PARAS_ENUM_OPT(opt) // ""
MACRO_PARAS_ENUM_OPT(opt, a) // "opt(1, a)"
MACRO_PARAS_ENUM_OPT(opt, a, b, c, d) // "opt(4, a) opt(3, b) opt(2, c) opt(1, d)"
MACRO_PARAS_ENUM_OPT_WITHOUT_LAST(opt) // ""
MACRO_PARAS_ENUM_OPT_WITHOUT_LAST(opt, a) // "a"
MACRO_PARAS_ENUM_OPT_WITHOUT_LAST(opt, a, b, c, d) // "opt(4, a) opt(3, b) opt(2, c) d"
MACRO_PARAS_NOTDEAL_0PARAS(opt) // ""
MACRO_PARAS_NOTDEAL_0PARAS(opt, a) // "opt(1, a)"
MACRO_PARAS_NOTDEAL_0PARAS(opt, a, b, c, d) // "opt(4, a, b, c, d)"
Struct function
list
| func | desp |
|---|---|
| GET_STRUCT_TYPE(name) | get name of the struct generated by ‘GEN_STRUCT’. |
| GET_STRUCT_AUTO_TYPE(name) | get name of the struct generated by ‘GEN_STRUCT’. |
| GET_STRUCT_VAR(name) | get name of the struct variate generated by ‘GEN_STRUCT’. |
| GET_STRUCT_AUTO_VAR() | get name of the struct variate generated by ‘GEN_STRUCT’. |
| GEN_STRUCT(name, …) | generate a struct and variate of this struct. |
| GEN_STRUCT_AUTO(…) | generate a struct and variate of this struct. |
| GEN_TEMP_VARS(…) | generate corresponding temp vars of macro paras. |
| SET_TEMP_VARS(…) | set corresponding temp vars of macro paras. |
| GET_TEMP_VARS(…) | get corresponding temp vars of macro paras. |
| SET_STRUCT_AUTO(…) | set corresponding struct’s member of macro paras. |
examples
#define GEN_EXAMPLE(...) \
do \
{ \
GEN_TEMP_VARS(__VA_ARGS__); \
SET_TEMP_VARS(__VA_ARGS__); \
GEN_STRUCT_AUTO(GET_TEMP_VARS(__VA_ARGS__)); \
SET_STRUCT_AUTO(GET_TEMP_VARS(__VA_ARGS__)); \
GET_STRUCT_AUTO_VAR_MEMBER_N(0, __VA_ARGS__); \
} while (0)
GEN_EXAMPLE(1, 2, 3)
GEN_TEMP_VARS(__VA_ARGS__); // typeof(1) temp_52_3, typeof(2) temp_52_2, typeof(3) temp_52_1;
SET_TEMP_VARS(__VA_ARGS__); // temp_52_3 = 1; temp_52_2 = 2; temp_52_1 = 3; ;
GET_TEMP_VARS(__VA_ARGS__); // temp_52_3, temp_52_2, temp_52_1;
GEN_STRUCT_AUTO(GET_TEMP_VARS(__VA_ARGS__)); // struct gen_auto52_stru
// {
// typeof(temp_52_3) temp_52_3;
// typeof(temp_52_2) temp_52_2;
// typeof(temp_52_1) temp_52_1;
// } __attribute__((__packed__)) gen_auto52;
SET_STRUCT_AUTO(GET_TEMP_VARS(__VA_ARGS__)); // gen_auto52.temp_52_3 = temp_52_3;
// gen_auto52.temp_52_2 = temp_52_2;
// gen_auto52.temp_52_1 = temp_52_1;
// ;
GET_STRUCT_AUTO_VAR_MEMBER_N(0, __VA_ARGS__); // gen_auto52.temp_52_0;
Type function
list
| func | desp |
|---|---|
| GET_MACRO_PARAS_SIZE(…) | return paras size as array. |
| GET_MACRO_PARAS_SIZE_FIX(…) | return paras size as fixed length(10) array |
| GET_MACRO_PARAS_TYPE(…) | return paras type code as array. |
| GET_MACRO_PARAS_TYPE_FIX(…) | return paras type code as fixed length(10) array. |
examples
GET_MACRO_PARAS_SIZE() // ""
GET_MACRO_PARAS_SIZE(a) // "sizeof(a)"
GET_MACRO_PARAS_SIZE(a, b, c, d) // "sizeof(a), sizeof(b), sizeof(c), sizeof(d)"
GET_MACRO_PARAS_SIZE_FIX() // "0, 0, 0, 0, 0, 0, 0, 0, 0, 0"
GET_MACRO_PARAS_SIZE_FIX(a) // "sizeof(a), 0, 0, 0, 0, 0, 0, 0, 0, 0"
GET_MACRO_PARAS_SIZE_FIX(a, b, c, d) // "sizeof(a), sizeof(b), sizeof(c), sizeof(d), 0, 0, 0, 0, 0, 0"
GET_MACRO_PARAS_TYPE() // ""
GET_MACRO_PARAS_TYPE(a) // "(__builtin_types_compatible_p(typeof(a), char) ? 1 :
// (__builtin_types_compatible_p(typeof(a), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(a), short) ? 3 :
// (__builtin_types_compatible_p(typeof(a), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(a), int) ? 5 :
// (__builtin_types_compatible_p(typeof(a), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(a), float) ? 7 :
// (__builtin_types_compatible_p(typeof(a), double) ? 8 :
// (__builtin_types_compatible_p(typeof(a), typeof(const char *)) ? 9 : 0)))))))))"
GET_MACRO_PARAS_TYPE(a, b, c, d) // "(__builtin_types_compatible_p(typeof(a), char) ? 1 :
// (__builtin_types_compatible_p(typeof(a), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(a), short) ? 3 :
// (__builtin_types_compatible_p(typeof(a), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(a), int) ? 5 :
// (__builtin_types_compatible_p(typeof(a), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(a), float) ? 7 :
// (__builtin_types_compatible_p(typeof(a), double) ? 8 :
// (__builtin_types_compatible_p(typeof(a), typeof(const char *)) ? 9 : 0))))))))), (__builtin_types_compatible_p(typeof(b), char) ? 1 :
// (__builtin_types_compatible_p(typeof(b), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(b), short) ? 3 :
// (__builtin_types_compatible_p(typeof(b), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(b), int) ? 5 :
// (__builtin_types_compatible_p(typeof(b), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(b), float) ? 7 :
// (__builtin_types_compatible_p(typeof(b), double) ? 8 :
// (__builtin_types_compatible_p(typeof(b), typeof(const char *)) ? 9 : 0))))))))), (__builtin_types_compatible_p(typeof(c), char) ? 1 :
// (__builtin_types_compatible_p(typeof(c), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(c), short) ? 3 :
// (__builtin_types_compatible_p(typeof(c), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(c), int) ? 5 :
// (__builtin_types_compatible_p(typeof(c), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(c), float) ? 7 :
// (__builtin_types_compatible_p(typeof(c), double) ? 8 :
// (__builtin_types_compatible_p(typeof(c), typeof(const char *)) ? 9 : 0))))))))), (__builtin_types_compatible_p(typeof(d), char) ? 1 :
// (__builtin_types_compatible_p(typeof(d), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(d), short) ? 3 :
// (__builtin_types_compatible_p(typeof(d), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(d), int) ? 5 :
// (__builtin_types_compatible_p(typeof(d), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(d), float) ? 7 :
// (__builtin_types_compatible_p(typeof(d), double) ? 8 :
// (__builtin_types_compatible_p(typeof(d), typeof(const char *)) ? 9 : 0)))))))))"
GET_MACRO_PARAS_TYPE_FIX() // "0, 0, 0, 0, 0, 0, 0, 0, 0, 0"
GET_MACRO_PARAS_TYPE_FIX(a) // "(__builtin_types_compatible_p(typeof(a), char) ? 1 :
// (__builtin_types_compatible_p(typeof(a), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(a), short) ? 3 :
// (__builtin_types_compatible_p(typeof(a), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(a), int) ? 5 :
// (__builtin_types_compatible_p(typeof(a), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(a), float) ? 7 :
// (__builtin_types_compatible_p(typeof(a), double) ? 8 :
// (__builtin_types_compatible_p(typeof(a), typeof(const char *)) ? 9 : 0))))))))), 0, 0, 0, 0, 0, 0, 0, 0, 0"
GET_MACRO_PARAS_TYPE_FIX(a, b, c, d) // "(__builtin_types_compatible_p(typeof(a), char) ? 1 :
// (__builtin_types_compatible_p(typeof(a), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(a), short) ? 3 :
// (__builtin_types_compatible_p(typeof(a), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(a), int) ? 5 :
// (__builtin_types_compatible_p(typeof(a), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(a), float) ? 7 :
// (__builtin_types_compatible_p(typeof(a), double) ? 8 :
// (__builtin_types_compatible_p(typeof(a), typeof(const char *)) ? 9 : 0))))))))), (__builtin_types_compatible_p(typeof(b), char) ? 1 :
// (__builtin_types_compatible_p(typeof(b), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(b), short) ? 3 :
// (__builtin_types_compatible_p(typeof(b), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(b), int) ? 5 :
// (__builtin_types_compatible_p(typeof(b), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(b), float) ? 7 :
// (__builtin_types_compatible_p(typeof(b), double) ? 8 :
// (__builtin_types_compatible_p(typeof(b), typeof(const char *)) ? 9 : 0))))))))), (__builtin_types_compatible_p(typeof(c), char) ? 1 :
// (__builtin_types_compatible_p(typeof(c), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(c), short) ? 3 :
// (__builtin_types_compatible_p(typeof(c), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(c), int) ? 5 :
// (__builtin_types_compatible_p(typeof(c), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(c), float) ? 7 :
// (__builtin_types_compatible_p(typeof(c), double) ? 8 :
// (__builtin_types_compatible_p(typeof(c), typeof(const char *)) ? 9 : 0))))))))), (__builtin_types_compatible_p(typeof(d), char) ? 1 :
// (__builtin_types_compatible_p(typeof(d), unsigned char) ? 2 :
// (__builtin_types_compatible_p(typeof(d), short) ? 3 :
// (__builtin_types_compatible_p(typeof(d), unsigned short) ? 4 :
// (__builtin_types_compatible_p(typeof(d), int) ? 5 :
// (__builtin_types_compatible_p(typeof(d), unsigned int) ? 6 :
// (__builtin_types_compatible_p(typeof(d), float) ? 7 :
// (__builtin_types_compatible_p(typeof(d), double) ? 8 :
// (__builtin_types_compatible_p(typeof(d), typeof(const char *)) ? 9 : 0))))))))), 0, 0, 0, 0, 0, 0"
Repository
Git repository:
github.com/novumdun/macro_func_collection