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lua.h
/* ** $Id: lua.h $ ** Lua - A Scripting Language ** Lua.org, PUC-Rio, Brazil (http://www.lua.org) ** See Copyright Notice at the end of this file */ #ifndef lua_h #define lua_h #include <stdarg.h> #include <stddef.h> #include "luaconf.h" #define LUA_VERSION_MAJOR "5" #define LUA_VERSION_MINOR "4" #define LUA_VERSION_RELEASE "4" #define LUA_VERSION_NUM 504 #define LUA_VERSION_RELEASE_NUM (LUA_VERSION_NUM * 100 + 4) #define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR #define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE #define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2022 Lua.org, PUC-Rio" #define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes" /* mark for precompiled code ('<esc>Lua') */ #define LUA_SIGNATURE "\x1bLua" /* option for multiple returns in 'lua_pcall' and 'lua_call' */ #define LUA_MULTRET (-1) /* ** Pseudo-indices ** (-LUAI_MAXSTACK is the minimum valid index; we keep some free empty ** space after that to help overflow detection) */ #define LUA_REGISTRYINDEX (-LUAI_MAXSTACK - 1000) #define lua_upvalueindex(i) (LUA_REGISTRYINDEX - (i)) /* thread status */ #define LUA_OK 0 #define LUA_YIELD 1 #define LUA_ERRRUN 2 #define LUA_ERRSYNTAX 3 #define LUA_ERRMEM 4 #define LUA_ERRERR 5 typedef struct lua_State lua_State; /* ** basic types */ #define LUA_TNONE (-1) #define LUA_TNIL 0 #define LUA_TBOOLEAN 1 #define LUA_TLIGHTUSERDATA 2 #define LUA_TNUMBER 3 #define LUA_TSTRING 4 #define LUA_TTABLE 5 #define LUA_TFUNCTION 6 #define LUA_TUSERDATA 7 #define LUA_TTHREAD 8 #define LUA_NUMTYPES 9 /* minimum Lua stack available to a C function */ #define LUA_MINSTACK 20 /* predefined values in the registry */ #define LUA_RIDX_MAINTHREAD 1 #define LUA_RIDX_GLOBALS 2 #define LUA_RIDX_LAST LUA_RIDX_GLOBALS /* type of numbers in Lua */ typedef LUA_NUMBER lua_Number; /* type for integer functions */ typedef LUA_INTEGER lua_Integer; /* unsigned integer type */ typedef LUA_UNSIGNED lua_Unsigned; /* type for continuation-function contexts */ typedef LUA_KCONTEXT lua_KContext; /* ** Type for C functions registered with Lua */ typedef int (*lua_CFunction) (lua_State *L); /* ** Type for continuation functions */ typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx); /* ** Type for functions that read/write blocks when loading/dumping Lua chunks */ typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz); typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud); /* ** Type for memory-allocation functions */ typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize); /* ** Type for warning functions */ typedef void (*lua_WarnFunction) (void *ud, const char *msg, int tocont); /* ** generic extra include file */ #if defined(LUA_USER_H) #include LUA_USER_H #endif /* ** RCS ident string */ extern const char lua_ident[]; /* ** state manipulation */ LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud); LUA_API void (lua_close) (lua_State *L); LUA_API lua_State *(lua_newthread) (lua_State *L); LUA_API int (lua_resetthread) (lua_State *L); LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf); LUA_API lua_Number (lua_version) (lua_State *L); /* ** basic stack manipulation */ LUA_API int (lua_absindex) (lua_State *L, int idx); LUA_API int (lua_gettop) (lua_State *L); LUA_API void (lua_settop) (lua_State *L, int idx); LUA_API void (lua_pushvalue) (lua_State *L, int idx); LUA_API void (lua_rotate) (lua_State *L, int idx, int n); LUA_API void (lua_copy) (lua_State *L, int fromidx, int toidx); LUA_API int (lua_checkstack) (lua_State *L, int n); LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n); /* ** access functions (stack -> C) */ LUA_API int (lua_isnumber) (lua_State *L, int idx); LUA_API int (lua_isstring) (lua_State *L, int idx); LUA_API int (lua_iscfunction) (lua_State *L, int idx); LUA_API int (lua_isinteger) (lua_State *L, int idx); LUA_API int (lua_isuserdata) (lua_State *L, int idx); LUA_API int (lua_type) (lua_State *L, int idx); LUA_API const char *(lua_typename) (lua_State *L, int tp); LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum); LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum); LUA_API int (lua_toboolean) (lua_State *L, int idx); LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len); LUA_API lua_Unsigned (lua_rawlen) (lua_State *L, int idx); LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx); LUA_API void *(lua_touserdata) (lua_State *L, int idx); LUA_API lua_State *(lua_tothread) (lua_State *L, int idx); LUA_API const void *(lua_topointer) (lua_State *L, int idx); /* ** Comparison and arithmetic functions */ #define LUA_OPADD 0 /* ORDER TM, ORDER OP */ #define LUA_OPSUB 1 #define LUA_OPMUL 2 #define LUA_OPMOD 3 #define LUA_OPPOW 4 #define LUA_OPDIV 5 #define LUA_OPIDIV 6 #define LUA_OPBAND 7 #define LUA_OPBOR 8 #define LUA_OPBXOR 9 #define LUA_OPSHL 10 #define LUA_OPSHR 11 #define LUA_OPUNM 12 #define LUA_OPBNOT 13 LUA_API void (lua_arith) (lua_State *L, int op); #define LUA_OPEQ 0 #define LUA_OPLT 1 #define LUA_OPLE 2 LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2); LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op); /* ** push functions (C -> stack) */ LUA_API void (lua_pushnil) (lua_State *L); LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n); LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n); LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len); LUA_API const char *(lua_pushstring) (lua_State *L, const char *s); LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt, va_list argp); LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...); LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n); LUA_API void (lua_pushboolean) (lua_State *L, int b); LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p); LUA_API int (lua_pushthread) (lua_State *L); /* ** get functions (Lua -> stack) */ LUA_API int (lua_getglobal) (lua_State *L, const char *name); LUA_API int (lua_gettable) (lua_State *L, int idx); LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k); LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n); LUA_API int (lua_rawget) (lua_State *L, int idx); LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n); LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p); LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec); LUA_API void *(lua_newuserdatauv) (lua_State *L, size_t sz, int nuvalue); LUA_API int (lua_getmetatable) (lua_State *L, int objindex); LUA_API int (lua_getiuservalue) (lua_State *L, int idx, int n); /* ** set functions (stack -> Lua) */ LUA_API void (lua_setglobal) (lua_State *L, const char *name); LUA_API void (lua_settable) (lua_State *L, int idx); LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k); LUA_API void (lua_seti) (lua_State *L, int idx, lua_Integer n); LUA_API void (lua_rawset) (lua_State *L, int idx); LUA_API void (lua_rawseti) (lua_State *L, int idx, lua_Integer n); LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p); LUA_API int (lua_setmetatable) (lua_State *L, int objindex); LUA_API int (lua_setiuservalue) (lua_State *L, int idx, int n); /* ** 'load' and 'call' functions (load and run Lua code) */ LUA_API void (lua_callk) (lua_State *L, int nargs, int nresults, lua_KContext ctx, lua_KFunction k); #define lua_call(L,n,r) lua_callk(L, (n), (r), 0, NULL) LUA_API int (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc, lua_KContext ctx, lua_KFunction k); #define lua_pcall(L,n,r,f) lua_pcallk(L, (n), (r), (f), 0, NULL) LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt, const char *chunkname, const char *mode); LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip); /* ** coroutine functions */ LUA_API int (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx, lua_KFunction k); LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg, int *nres); LUA_API int (lua_status) (lua_State *L); LUA_API int (lua_isyieldable) (lua_State *L); #define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL) /* ** Warning-related functions */ LUA_API void (lua_setwarnf) (lua_State *L, lua_WarnFunction f, void *ud); LUA_API void (lua_warning) (lua_State *L, const char *msg, int tocont); /* ** garbage-collection function and options */ #define LUA_GCSTOP 0 #define LUA_GCRESTART 1 #define LUA_GCCOLLECT 2 #define LUA_GCCOUNT 3 #define LUA_GCCOUNTB 4 #define LUA_GCSTEP 5 #define LUA_GCSETPAUSE 6 #define LUA_GCSETSTEPMUL 7 #define LUA_GCISRUNNING 9 #define LUA_GCGEN 10 #define LUA_GCINC 11 LUA_API int (lua_gc) (lua_State *L, int what, ...); /* ** miscellaneous functions */ LUA_API int (lua_error) (lua_State *L); LUA_API int (lua_next) (lua_State *L, int idx); LUA_API void (lua_concat) (lua_State *L, int n); LUA_API void (lua_len) (lua_State *L, int idx); LUA_API size_t (lua_stringtonumber) (lua_State *L, const char *s); LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud); LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud); LUA_API void (lua_toclose) (lua_State *L, int idx); LUA_API void (lua_closeslot) (lua_State *L, int idx); /* ** {============================================================== ** some useful macros ** =============================================================== */ #define lua_getextraspace(L) ((void *)((char *)(L) - LUA_EXTRASPACE)) #define lua_tonumber(L,i) lua_tonumberx(L,(i),NULL) #define lua_tointeger(L,i) lua_tointegerx(L,(i),NULL) #define lua_pop(L,n) lua_settop(L, -(n)-1) #define lua_newtable(L) lua_createtable(L, 0, 0) #define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n))) #define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0) #define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION) #define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE) #define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA) #define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL) #define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN) #define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD) #define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE) #define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0) #define lua_pushliteral(L, s) lua_pushstring(L, "" s) #define lua_pushglobaltable(L) \ ((void)lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS)) #define lua_tostring(L,i) lua_tolstring(L, (i), NULL) #define lua_insert(L,idx) lua_rotate(L, (idx), 1) #define lua_remove(L,idx) (lua_rotate(L, (idx), -1), lua_pop(L, 1)) #define lua_replace(L,idx) (lua_copy(L, -1, (idx)), lua_pop(L, 1)) /* }============================================================== */ /* ** {============================================================== ** compatibility macros ** =============================================================== */ #if defined(LUA_COMPAT_APIINTCASTS) #define lua_pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n)) #define lua_tounsignedx(L,i,is) ((lua_Unsigned)lua_tointegerx(L,i,is)) #define lua_tounsigned(L,i) lua_tounsignedx(L,(i),NULL) #endif #define lua_newuserdata(L,s) lua_newuserdatauv(L,s,1) #define lua_getuservalue(L,idx) lua_getiuservalue(L,idx,1) #define lua_setuservalue(L,idx) lua_setiuservalue(L,idx,1) #define LUA_NUMTAGS LUA_NUMTYPES /* }============================================================== */ /* ** {====================================================================== ** Debug API ** ======================================================================= */ /* ** Event codes */ #define LUA_HOOKCALL 0 #define LUA_HOOKRET 1 #define LUA_HOOKLINE 2 #define LUA_HOOKCOUNT 3 #define LUA_HOOKTAILCALL 4 /* ** Event masks */ #define LUA_MASKCALL (1 << LUA_HOOKCALL) #define LUA_MASKRET (1 << LUA_HOOKRET) #define LUA_MASKLINE (1 << LUA_HOOKLINE) #define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT) typedef struct lua_Debug lua_Debug; /* activation record */ /* Functions to be called by the debugger in specific events */ typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar); LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar); LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar); LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n); LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n); LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n); LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n); LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n); LUA_API void (lua_upvaluejoin) (lua_State *L, int fidx1, int n1, int fidx2, int n2); LUA_API void (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count); LUA_API lua_Hook (lua_gethook) (lua_State *L); LUA_API int (lua_gethookmask) (lua_State *L); LUA_API int (lua_gethookcount) (lua_State *L); LUA_API int (lua_setcstacklimit) (lua_State *L, unsigned int limit); struct lua_Debug { int event; const char *name; /* (n) */ const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */ const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */ const char *source; /* (S) */ size_t srclen; /* (S) */ int currentline; /* (l) */ int linedefined; /* (S) */ int lastlinedefined; /* (S) */ unsigned char nups; /* (u) number of upvalues */ unsigned char nparams;/* (u) number of parameters */ char isvararg; /* (u) */ char istailcall; /* (t) */ unsigned short ftransfer; /* (r) index of first value transferred */ unsigned short ntransfer; /* (r) number of transferred values */ char short_src[LUA_IDSIZE]; /* (S) */ /* private part */ struct CallInfo *i_ci; /* active function */ }; /* }====================================================================== */ /****************************************************************************** * Copyright (C) 1994-2022 Lua.org, PUC-Rio. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ******************************************************************************/ #endif
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