lua5 3資料結構

由於lua版本迭代之間,資料結構和函式都會部分變化

以下是我分析的lua.h中的資訊,以便確定版本

#define lua_version_major	"5"

#define lua_version_minor	"3"
#define lua_version_num		503
#define lua_version_release	"3"

#define commonheader	gcobject *next; lu_byte tt; lu_byte marked

/*** union of all collectable objects (only for conversions)
*/union gcunion ;

以下和機器有關，比如在32位（64位）機器

#define lua_int32	int

#define luai_umem	size_t
#define luai_mem	ptrdiff_t

#define lua_number_double

#define lua_number	double
typedef unsigned char lu_byte;
typedef tvalue *stkid;  /* index to stack elements */
typedef struct lua_tvalue tvalue;
typedef int (*lua_cfunction) (lua_state *l);
typedef unsigned lua_int32 lu_int32;
typedef luai_umem lu_mem;
typedef luai_mem l_mem;
typedef lu_int32 instruction;

//儲存值和型別

#define tvaluefields	value value_; int tt_
struct lua_tvalue ;

/*

** union of all lua values
*/typedef union value  value;

#define commonheader   gcobject *next; lu_byte tt; lu_byte marked

struct gcobject ;

/*

** header for userdata; memory area follows the end of this structure
** (aligned according to 'uudata'; see next).
*/typedef struct udata  udata;
/*** ensures that address after this type is always fully aligned.
*/typedef union uudata  uudata;

/*

** header for string value; string bytes follow the end of this structure
** (aligned according to 'utstring'; see next).
*/typedef struct tstring  u;
} tstring;
/*** ensures that address after this type is always fully aligned.
*/typedef union utstring  utstring;

//閉包相關

#define closureheader  commonheader; lu_byte nupvalues; gcobject *gclist
typedef struct cclosure  cclosure;
typedef struct lclosure  lclosure;
typedef union closure  closure;

//表相關

typedef union tkey  nk;
tvalue tvk;
} tkey;
typedef struct node  node;
typedef struct table  table;

/*

** description of an upvalue for function prototypes
*/typedef struct upvaldesc  upvaldesc;
/*** description of a local variable for function prototypes
** (used for debug information)
*/typedef struct locvar  locvar;
/*** function prototypes
*/typedef struct proto  proto;

//上值

typedef struct upval  l;
} u;
} upval;

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