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58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
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/*
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** $Id: ldo.h,v 2.7.1.1 2007/12/27 13:02:25 roberto Exp $
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** Stack and Call structure of Lua
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** See Copyright Notice in lua.h
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*/
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#ifndef ldo_h
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#define ldo_h
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#include "lobject.h"
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#include "lstate.h"
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#include "lzio.h"
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#define luaD_checkstack(L,n) \
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if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TValue)) \
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luaD_growstack(L, n); \
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else condhardstacktests(luaD_reallocstack(L, L->stacksize - EXTRA_STACK - 1));
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#define incr_top(L) {luaD_checkstack(L,1); L->top++;}
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#define savestack(L,p) ((char *)(p) - (char *)L->stack)
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#define restorestack(L,n) ((TValue *)((char *)L->stack + (n)))
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#define saveci(L,p) ((char *)(p) - (char *)L->base_ci)
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#define restoreci(L,n) ((CallInfo *)((char *)L->base_ci + (n)))
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/* results from luaD_precall */
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#define PCRLUA 0 /* initiated a call to a Lua function */
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#define PCRC 1 /* did a call to a C function */
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#define PCRYIELD 2 /* C funtion yielded */
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/* type of protected functions, to be ran by `runprotected' */
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typedef void (*Pfunc) (lua_State *L, void *ud);
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LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name);
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LUAI_FUNC void luaD_callhook (lua_State *L, int event, int line);
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LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
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LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults);
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LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
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ptrdiff_t oldtop, ptrdiff_t ef);
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LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
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LUAI_FUNC void luaD_reallocCI (lua_State *L, int newsize);
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LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
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LUAI_FUNC void luaD_growstack (lua_State *L, int n);
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LUAI_FUNC void luaD_throw (lua_State *L, int errcode);
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LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
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LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
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#endif
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