co-string.c

#include "co-string.h"
#include <stdio.h>

static void co_string_construct(void* p)
{
	printf("string construct\n");
	CoString* self = p;
	self->data = NULL;
	self->length = 0;
}

static void co_string_deconstruct(void* p)
{
	printf("string deconstruct\n");
	CoString* self = p;
	if (self->data)
		free(self->data);
}

co_implementation_define(CoString, CoNew)
{
	sizeof(CoString),
	co_string_construct,
	co_string_deconstruct,
};

co_type_define(CoString)
{
	co_type_implements(CoString, CoNew),
	co_type_end
};

co-string.h

#include "cobalt.h"

#ifndef __CO_STRING_H_INCLUDED__
#define __CO_STRING_H_INCLUDED__

typedef struct
{
	char* data;
	size_t length;
} CoString;

co_type_export(CoString);
co_implementation_export(CoString, CoNew);

#endif /* __CO_STRING_H_INCLUDED__ */

main.c

#include "cobalt.h"
#include "co-string.h"

co_implementation_define(int, CoNew)
{
	sizeof(int),
	NULL,
	NULL,
};

co_type_define(int)
{
	co_type_implements(int, CoNew),
	co_type_end
};

int main(int argc, char** argv)
{
	CoString* str = co_new(CoString);
	co_delete(str);
	
	int* aint = co_newa(int);
	*aint = 0;
	
	return *aint;
}