/* $NetBSD: lfunc.h,v 1.11 2023/06/08 21:12:08 nikita Exp $ */ /* ** 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) (cast_int(offsetof(CClosure, upvalue)) + \ cast_int(sizeof(TValue)) * (n)) #define sizeLclosure(n) (cast_int(offsetof(LClosure, upvals)) + \ cast_int(sizeof(TValue *)) * (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 |