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61 lines
1.6 KiB
61 lines
1.6 KiB
/* |
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** $Id: lfunc.h,v 2.15.1.1 2017/04/19 17:39:34 roberto Exp $ |
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** Auxiliary functions to manipulate prototypes and closures |
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** See Copyright Notice in lua.h |
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*/ |
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#ifndef lfunc_h |
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#define lfunc_h |
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#include "lobject.h" |
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#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \ |
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cast(int, sizeof(TValue)*((n)-1))) |
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#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \ |
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cast(int, sizeof(TValue *)*((n)-1))) |
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/* test whether thread is in 'twups' list */ |
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#define isintwups(L) (L->twups != L) |
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/* |
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** maximum number of upvalues in a closure (both C and Lua). (Value |
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** must fit in a VM register.) |
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*/ |
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#define MAXUPVAL 127 |
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/* |
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** Upvalues for Lua closures |
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*/ |
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struct UpVal { |
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TValue *v; /* points to stack or to its own value */ |
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lu_mem refcount; /* reference counter */ |
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union { |
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struct { /* (when open) */ |
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UpVal *next; /* linked list */ |
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int touched; /* mark to avoid cycles with dead threads */ |
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} open; |
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TValue value; /* the value (when closed) */ |
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} u; |
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}; |
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#define upisopen(up) ((up)->v != &(up)->u.value) |
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LUAI_FUNC Proto *luaF_newproto (lua_State *L); |
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LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nelems); |
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LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nelems); |
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LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl); |
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LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level); |
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LUAI_FUNC void luaF_close (lua_State *L, StkId level); |
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LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f); |
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LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number, |
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int pc); |
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#endif
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