75 lines
1.4 KiB
Markdown
75 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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Meta Programming Header Only Library for C
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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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- Requires `stb_c_lexer`
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## Quick start
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Current implementation depends on `stb_c_lexer`, in future I'll use my own lexer. Because of the current setup, cmeta is not easy to use, remember, it's not finished!
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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 *char_ptr_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 cmeta
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As mentionned before, `stb_c_lexer` is currently required, it will be removed in the future.
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```console
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$ gcc cmeta.c -I./third_party/ -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* char_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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It runs `gcc -E`, so it process everything your code uses, including structs from cmeta itself.
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