mirror of
https://github.com/lua/lua
synced 2024-09-28 15:20:31 +02:00
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
|
|
** $Id: lfunc.h $
|
|
** 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) \
|
|
(offsetof(CClosure, upvalue) + sizeof(TValue) * cast_uint(n))
|
|
|
|
#define sizeLclosure(n) \
|
|
(offsetof(LClosure, upvals) + sizeof(TValue *) * cast_uint(n))
|
|
|
|
|
|
/* test whether thread is in 'twups' list */
|
|
#define isintwups(L) (L->twups != L)
|
|
|
|
|
|
/*
|
|
** maximum number of upvalues in a closure (both C and Lua). (Value
|
|
** must fit in a VM register.)
|
|
*/
|
|
#define MAXUPVAL 255
|
|
|
|
|
|
#define upisopen(up) ((up)->v.p != &(up)->u.value)
|
|
|
|
|
|
#define uplevel(up) check_exp(upisopen(up), cast(StkId, (up)->v.p))
|
|
|
|
|
|
/*
|
|
** maximum number of misses before giving up the cache of closures
|
|
** in prototypes
|
|
*/
|
|
#define MAXMISS 10
|
|
|
|
|
|
|
|
/* special status to close upvalues preserving the top of the stack */
|
|
#define CLOSEKTOP (-1)
|
|
|
|
|
|
LUAI_FUNC Proto *luaF_newproto (lua_State *L);
|
|
LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nupvals);
|
|
LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nupvals);
|
|
LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);
|
|
LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
|
|
LUAI_FUNC void luaF_newtbcupval (lua_State *L, StkId level);
|
|
LUAI_FUNC void luaF_closeupval (lua_State *L, StkId level);
|
|
LUAI_FUNC StkId luaF_close (lua_State *L, StkId level, int status, int yy);
|
|
LUAI_FUNC void luaF_unlinkupval (UpVal *uv);
|
|
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
|