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58 lines
2.0 KiB
58 lines
2.0 KiB
/* |
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** $Id: ldo.h,v 2.29.1.1 2017/04/19 17:20:42 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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/* |
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** Macro to check stack size and grow stack if needed. Parameters |
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** 'pre'/'pos' allow the macro to preserve a pointer into the |
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** stack across reallocations, doing the work only when needed. |
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** 'condmovestack' is used in heavy tests to force a stack reallocation |
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** at every check. |
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*/ |
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#define luaD_checkstackaux(L,n,pre,pos) \ |
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if (L->stack_last - L->top <= (n)) \ |
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{ pre; luaD_growstack(L, n); pos; } else { condmovestack(L,pre,pos); } |
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/* In general, 'pre'/'pos' are empty (nothing to save) */ |
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#define luaD_checkstack(L,n) luaD_checkstackaux(L,n,(void)0,(void)0) |
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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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/* 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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const char *mode); |
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LUAI_FUNC void luaD_hook (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 void luaD_callnoyield (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, CallInfo *ci, StkId firstResult, |
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int nres); |
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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_shrinkstack (lua_State *L); |
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LUAI_FUNC void luaD_inctop (lua_State *L); |
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LUAI_FUNC l_noret 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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#endif |
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