mirror of
https://github.com/lua/lua
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50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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** $Id: ldo.h,v 1.46 2002/06/18 15:19:27 roberto Exp roberto $
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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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/*
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** macro to increment stack top.
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** There must be always an empty slot at the L->stack.top
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*/
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#define incr_top(L) \
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{if (L->top >= L->stack_last) luaD_growstack(L, 1); L->top++;}
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#define luaD_checkstack(L,n) \
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if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TObject)) \
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luaD_growstack(L, n)
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#define savestack(L,p) ((char *)(p) - (char *)L->stack)
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#define restorestack(L,n) ((TObject *)((char *)L->stack + (n)))
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/* type of protected functions, to be ran by `runprotected' */
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typedef void (*Pfunc) (lua_State *L, void *v);
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int luaD_protectedparser (lua_State *L, ZIO *z, int bin);
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void luaD_lineHook (lua_State *L, int line);
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StkId luaD_precall (lua_State *L, StkId func);
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void luaD_call (lua_State *L, StkId func, int nResults);
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int luaD_pcall (lua_State *L, int nargs, int nresults);
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void luaD_poscall (lua_State *L, int wanted, StkId firstResult);
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void luaD_reallocCI (lua_State *L, int newsize);
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void luaD_reallocstack (lua_State *L, int newsize);
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void luaD_growstack (lua_State *L, int n);
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void luaD_throw (lua_State *L, int errcode);
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int luaD_runprotected (lua_State *L, Pfunc f, TObject *ud);
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int luaD_isprotected (lua_State *L, CallInfo *ci);
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#endif
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