/*** $Id: lfunc.h,v 2.14 2014/06/19 18:27:20 roberto Exp $** Auxiliary functions to manipulate prototypes and closures** See Copyright Notice in lua.h*/ #ifndef lfunc_h#define lfunc_h  #include "lobject.h"  #define sizeCclosure(n)	(cast(int, sizeof(CClosure)) + \                         cast(int, sizeof(TValue)*((n)-1))) #define sizeLclosure(n)	(cast(int, sizeof(LClosure)) + \                         cast(int, sizeof(TValue *)*((n)-1)))  /* test whether thread is in 'twups' list */#define isintwups(L)	(L->twups != L)  /*** Upvalues for Lua closures*/struct UpVal {  TValue *v;  /* points to stack or to its own value */  lu_mem refcount;  /* reference counter */  union {    struct {  /* (when open) */      UpVal *next;  /* linked list */      int touched;  /* mark to avoid cycles with dead threads */    } open;    TValue value;  /* the value (when closed) */  } u;}; #define upisopen(up)	((up)->v != &(up)->u.value)  LUAI_FUNC Proto *luaF_newproto (lua_State *L);LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nelems);LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nelems);LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);LUAI_FUNC void luaF_close (lua_State *L, StkId level);LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,                                         int pc);  #endif