diff options
Diffstat (limited to 'src/libs/3rdparty/lua/src/ldo.h')
-rw-r--r-- | src/libs/3rdparty/lua/src/ldo.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/libs/3rdparty/lua/src/ldo.h b/src/libs/3rdparty/lua/src/ldo.h new file mode 100644 index 0000000000..1aa446ad09 --- /dev/null +++ b/src/libs/3rdparty/lua/src/ldo.h @@ -0,0 +1,88 @@ +/* +** $Id: ldo.h $ +** Stack and Call structure of Lua +** See Copyright Notice in lua.h +*/ + +#ifndef ldo_h +#define ldo_h + + +#include "llimits.h" +#include "lobject.h" +#include "lstate.h" +#include "lzio.h" + + +/* +** Macro to check stack size and grow stack if needed. Parameters +** 'pre'/'pos' allow the macro to preserve a pointer into the +** stack across reallocations, doing the work only when needed. +** It also allows the running of one GC step when the stack is +** reallocated. +** 'condmovestack' is used in heavy tests to force a stack reallocation +** at every check. +*/ +#define luaD_checkstackaux(L,n,pre,pos) \ + if (l_unlikely(L->stack_last.p - L->top.p <= (n))) \ + { pre; luaD_growstack(L, n, 1); pos; } \ + else { condmovestack(L,pre,pos); } + +/* In general, 'pre'/'pos' are empty (nothing to save) */ +#define luaD_checkstack(L,n) luaD_checkstackaux(L,n,(void)0,(void)0) + + + +#define savestack(L,pt) (cast_charp(pt) - cast_charp(L->stack.p)) +#define restorestack(L,n) cast(StkId, cast_charp(L->stack.p) + (n)) + + +/* macro to check stack size, preserving 'p' */ +#define checkstackp(L,n,p) \ + luaD_checkstackaux(L, n, \ + ptrdiff_t t__ = savestack(L, p), /* save 'p' */ \ + p = restorestack(L, t__)) /* 'pos' part: restore 'p' */ + + +/* macro to check stack size and GC, preserving 'p' */ +#define checkstackGCp(L,n,p) \ + luaD_checkstackaux(L, n, \ + ptrdiff_t t__ = savestack(L, p); /* save 'p' */ \ + luaC_checkGC(L), /* stack grow uses memory */ \ + p = restorestack(L, t__)) /* 'pos' part: restore 'p' */ + + +/* macro to check stack size and GC */ +#define checkstackGC(L,fsize) \ + luaD_checkstackaux(L, (fsize), luaC_checkGC(L), (void)0) + + +/* type of protected functions, to be ran by 'runprotected' */ +typedef void (*Pfunc) (lua_State *L, void *ud); + +LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop); +LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, + const char *mode); +LUAI_FUNC void luaD_hook (lua_State *L, int event, int line, + int fTransfer, int nTransfer); +LUAI_FUNC void luaD_hookcall (lua_State *L, CallInfo *ci); +LUAI_FUNC int luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, + int narg1, int delta); +LUAI_FUNC CallInfo *luaD_precall (lua_State *L, StkId func, int nResults); +LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults); +LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults); +LUAI_FUNC StkId luaD_tryfuncTM (lua_State *L, StkId func); +LUAI_FUNC int luaD_closeprotected (lua_State *L, ptrdiff_t level, int status); +LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u, + ptrdiff_t oldtop, ptrdiff_t ef); +LUAI_FUNC void luaD_poscall (lua_State *L, CallInfo *ci, int nres); +LUAI_FUNC int luaD_reallocstack (lua_State *L, int newsize, int raiseerror); +LUAI_FUNC int luaD_growstack (lua_State *L, int n, int raiseerror); +LUAI_FUNC void luaD_shrinkstack (lua_State *L); +LUAI_FUNC void luaD_inctop (lua_State *L); + +LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode); +LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud); + +#endif + |