- improve the interface of rtti to pass meta_obj_t* as parameter of type function to easy to access private/data
- rename some macro with RTTI - add RTTI_MAGIC in object header - add new rtti api
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c8c1749347
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15 changed files with 252 additions and 114 deletions
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@ -9,12 +9,14 @@
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#include <stdlib.h>
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#include <sys/types.h>
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#define RTTI_MAGIC (0x5254544949545452)
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#define var void*
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#define SIZE_ROUNDUP(sz) \
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#define RTTI_SIZE_ROUNDUP(sz) \
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((((sz + sizeof(void*) - 1)) / (sizeof(void*))) * sizeof(void*))
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#define OBJ_HEADER_SIZE SIZE_ROUNDUP(sizeof(meta_obj_t))
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#define RTTI_OBJ_HEADER_SIZE RTTI_SIZE_ROUNDUP(sizeof(meta_obj_t))
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/** Object format
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**
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@ -23,10 +25,34 @@
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** +=====================+===================+===================+
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**
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**/
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#define OBJ_TO_DATA(T, obj) ((T*)(((char*)obj) + OBJ_HEADER_SIZE))
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#define DATA_TO_OBJ(v) ((meta_obj_t*)(((char*)v) - OBJ_HEADER_SIZE))
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#define OBJ_TO_PRIV(obj) \
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((void*)(((char*)obj) - SIZE_ROUNDUP((obj)->type->privateSize)))
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#define RTTI_OBJ_TO_DATA(T, obj) ((T*)((obj)->data))
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#define RTTI_DATA_TO_OBJ(v) \
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(((v) == NULL) ? NULL : ((meta_obj_t*)(((char*)v) - RTTI_OBJ_HEADER_SIZE)))
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#define RTTI_OBJ_TO_PRIV(obj) ((obj)->privdata)
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#define RTTI_GET_METHOD(result, obj, intf, method) \
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do { \
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typeinfo_t* type_ = NULL; \
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\
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(result) = NULL; \
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\
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if ((obj) == NULL) { \
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break; \
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} \
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\
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type_ = obj->type; \
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if (type_ == NULL) { \
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break; \
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} \
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\
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if (type_->interfaces.intf == NULL) { \
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break; \
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} \
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\
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(result) = type_->interfaces.intf->method; \
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} while (0)
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#define RTTI_OBJ_INVALID(obj) (((obj) == NULL) || ((obj)->magic != RTTI_MAGIC))
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struct meta_obj_;
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struct typeinfo_;
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@ -38,12 +64,12 @@ typedef struct typeinfo_ typeinfo_t;
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typedef size_t (*datasize_fn_t)(va_list);
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/* object life cycle */
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typedef int (*obj_init_fn_t)(typeinfo_t*, va_list);
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typedef void (*obj_destroy_fn_t)(var);
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typedef int (*obj_init_fn_t)(meta_obj_t*, va_list);
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typedef void (*obj_destroy_fn_t)(meta_obj_t*);
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/* lock/unlock */
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typedef int (*lock_fn_t)(var, uint64_t);
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typedef void (*unlock_fn_t)(var);
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typedef int (*lock_fn_t)(meta_obj_t*, uint64_t);
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typedef void (*unlock_fn_t)(meta_obj_t*);
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typedef struct {
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lock_fn_t lock;
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@ -51,7 +77,7 @@ typedef struct {
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} intf_lock_t;
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/* convert to string */
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typedef char* (*to_string_fn_t)(var, va_list);
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typedef char* (*to_string_fn_t)(meta_obj_t*, va_list);
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typedef struct {
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to_string_fn_t toString;
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@ -59,15 +85,15 @@ typedef struct {
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/* iterator function */
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#define ITER_NO_DATA (0)
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#define ITER_OK (1)
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#define RTTI_ITER_NO_DATA (0)
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#define RTTI_ITER_OK (1)
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typedef struct {
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var v;
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var data;
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meta_obj_t* obj;
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var data;
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} iterator_t;
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typedef int (*iter_make_fn_t)(iterator_t*, var);
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typedef int (*iter_make_fn_t)(iterator_t*);
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typedef int (*iter_next_fn_t)(iterator_t*, void**);
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typedef int (*iter_reset_fn_t)(iterator_t*);
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typedef void (*iter_destroy_fn_t)(iterator_t*);
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@ -80,8 +106,8 @@ typedef struct {
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} intf_iterator_t;
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/* reference and deref */
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typedef int32_t (*reference_fn_t)(var);
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typedef void (*dereference_fn_t)(var);
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typedef int32_t (*reference_fn_t)(meta_obj_t*);
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typedef void (*dereference_fn_t)(meta_obj_t*);
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typedef struct {
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reference_fn_t reference;
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@ -90,14 +116,14 @@ typedef struct {
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/* hash */
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typedef int32_t (*hash_fn_t)(var);
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typedef int32_t (*hash_fn_t)(meta_obj_t*);
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typedef struct {
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hash_fn_t hash;
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} intf_hash_t;
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/* length */
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typedef int64_t (*length_fn_t)(var);
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typedef int64_t (*length_fn_t)(meta_obj_t*);
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typedef struct {
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length_fn_t length;
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@ -122,11 +148,15 @@ struct typeinfo_ {
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};
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struct meta_obj_ {
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uint64_t magic;
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typeinfo_t* type;
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void* privdata;
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void* data;
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};
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extern var makeInstance(typeinfo_t*, ...);
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extern void destroy(var);
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extern int is_rtti_obj(var);
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extern int lock(var, uint64_t);
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extern void unlock(var);
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extern char* toString(var, ...);
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@ -1,30 +0,0 @@
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#if !defined(_RTTI_UTILS_H_)
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#define _RTTI_UTILS_H_ 1
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#define RTTI_GET_METHOD(result, obj, intf, method) \
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do { \
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typeinfo_t* type_ = NULL; \
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meta_obj_t* obj_ = NULL; \
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\
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(result) = NULL; \
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\
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if ((obj) == NULL) { \
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break; \
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} \
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\
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obj_ = DATA_TO_OBJ(obj); \
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\
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type_ = obj_->type; \
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if (type_ == NULL) { \
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break; \
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} \
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\
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if (type_->interfaces.intf == NULL) { \
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break; \
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} \
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\
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(result) = type_->interfaces.intf->method; \
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} while (0)
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#endif
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