78 lines
1.4 KiB
Markdown
78 lines
1.4 KiB
Markdown
# cmeta
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> [!WARNING]
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> Work in progress. This is not finished at all, I'm just experimenting.
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Single Heaer Meta Programming Header Library for C. The same header for both codegen and runtime.
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## Current limitations
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- Only parses `typedef struct { ... } type_name;`
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- Will generate colliding definitions in case of types with the same name
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- Parsing expects more or less correct code, if you forget a semi it will generating bad code
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## Quick start
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1. Create `main.c`
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```c
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typedef struct {
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int int_field;
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const char *const_char_star_field;
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} My_Struct;
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int main(void) {
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return 0;
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}
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```
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2. Create `cmeta.c`
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You only have to call `process_file` with a file to generate type infos etc in `cmeta.h`.
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```c
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#define CMETA_COMPTIME
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#include "cmeta.h"
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int main(void) {
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if (!process_file("./main.c")) return 1;
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return 0;
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}
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```
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3. Build and run cmeta
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```console
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$ gcc cmeta.c -o cmeta
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$ ./cmeta
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```
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4. Enjoy!
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You can now inspect your types!
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```c
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#include "cmeta.h"
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typedef struct {
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int int_field;
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const char* const_char_star_field;
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} My_Struct;
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int main(void) {
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printf("My_Struct.name = %s\n", my_struct_info.name);
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printf("My_Struct.fields_count = %zu\n", my_struct_info.fields_count);
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return 0;
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}
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```
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```console
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$ gcc main.c -o main
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$ ./main
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My_Struct.name = My_Struct
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My_Struct.fields_count = 2
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```
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> [!INFO]
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> It runs `gcc -E`, so it handles macros etc.
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