The Battle for Wesnoth  1.15.1+dev
lfunc.h
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1 /*
2 ** $Id: lfunc.h,v 2.15.1.1 2017/04/19 17:39:34 roberto Exp $
3 ** Auxiliary functions to manipulate prototypes and closures
4 ** See Copyright Notice in lua.h
5 */
6 
7 #ifndef lfunc_h
8 #define lfunc_h
9 
10 
11 #include "lobject.h"
12 
13 
14 #define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \
15  cast(int, sizeof(TValue)*((n)-1)))
16 
17 #define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \
18  cast(int, sizeof(TValue *)*((n)-1)))
19 
20 
21 /* test whether thread is in 'twups' list */
22 #define isintwups(L) (L->twups != L)
23 
24 
25 /*
26 ** maximum number of upvalues in a closure (both C and Lua). (Value
27 ** must fit in a VM register.)
28 */
29 #define MAXUPVAL 255
30 
31 
32 /*
33 ** Upvalues for Lua closures
34 */
35 struct UpVal {
36  TValue *v; /* points to stack or to its own value */
37  lu_mem refcount; /* reference counter */
38  union {
39  struct { /* (when open) */
40  UpVal *next; /* linked list */
41  int touched; /* mark to avoid cycles with dead threads */
42  } open;
43  TValue value; /* the value (when closed) */
44  } u;
45 };
46 
47 #define upisopen(up) ((up)->v != &(up)->u.value)
48 
49 
57 LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
58  int pc);
59 
60 
61 #endif
struct UpVal::@2::@3 open
LUAI_FUNC Proto * luaF_newproto(lua_State *L)
Definition: lfunc.cpp:99
Definition: lobject.h:407
#define LUAI_FUNC
Definition: luaconf.h:282
LUAI_FUNC void luaF_initupvals(lua_State *L, LClosure *cl)
Definition: lfunc.cpp:45
union UpVal::@2 u
unsigned long lu_mem
Definition: llimits.h:29
Definition: lfunc.h:35
TValue * v
Definition: lfunc.h:36
LUAI_FUNC const char * luaF_getlocalname(const Proto *func, int local_number, int pc)
Definition: lfunc.cpp:140
int touched
Definition: lfunc.h:41
LUAI_FUNC UpVal * luaF_findupval(lua_State *L, StkId level)
Definition: lfunc.cpp:57
lu_mem refcount
Definition: lfunc.h:37
LUAI_FUNC void luaF_close(lua_State *L, StkId level)
Definition: lfunc.cpp:83
LUAI_FUNC LClosure * luaF_newLclosure(lua_State *L, int nelems)
Definition: lfunc.cpp:33
#define f
LUAI_FUNC CClosure * luaF_newCclosure(lua_State *L, int nelems)
Definition: lfunc.cpp:25
TValue value
Definition: lfunc.h:43
LUAI_FUNC void luaF_freeproto(lua_State *L, Proto *f)
Definition: lfunc.cpp:125
UpVal * next
Definition: lfunc.h:40