Add `vendor:lua/5.3`

10 files changed, 2370 insertions, 0 deletions

diff --git a/vendor/lua/5.3/include/lauxlib.h b/vendor/lua/5.3/include/lauxlib.h
new file mode 100644
index 000000000..9857d3a83
--- /dev/null
+++ b/vendor/lua/5.3/include/lauxlib.h
@@ -0,0 +1,264 @@
+/*
+** $Id: lauxlib.h,v 1.131.1.1 2017/04/19 17:20:42 roberto Exp $
+** Auxiliary functions for building Lua libraries
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef lauxlib_h
+#define lauxlib_h
+
+
+#include <stddef.h>
+#include <stdio.h>
+
+#include "lua.h"
+
+
+
+/* extra error code for 'luaL_loadfilex' */
+#define LUA_ERRFILE     (LUA_ERRERR+1)
+
+
+/* key, in the registry, for table of loaded modules */
+#define LUA_LOADED_TABLE	"_LOADED"
+
+
+/* key, in the registry, for table of preloaded loaders */
+#define LUA_PRELOAD_TABLE	"_PRELOAD"
+
+
+typedef struct luaL_Reg {
+  const char *name;
+  lua_CFunction func;
+} luaL_Reg;
+
+
+#define LUAL_NUMSIZES	(sizeof(lua_Integer)*16 + sizeof(lua_Number))
+
+LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz);
+#define luaL_checkversion(L)  \
+	  luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES)
+
+LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
+LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
+LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
+LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg);
+LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg,
+                                                          size_t *l);
+LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg,
+                                          const char *def, size_t *l);
+LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg);
+LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def);
+
+LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg);
+LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg,
+                                          lua_Integer def);
+
+LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
+LUALIB_API void (luaL_checktype) (lua_State *L, int arg, int t);
+LUALIB_API void (luaL_checkany) (lua_State *L, int arg);
+
+LUALIB_API int   (luaL_newmetatable) (lua_State *L, const char *tname);
+LUALIB_API void  (luaL_setmetatable) (lua_State *L, const char *tname);
+LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname);
+LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
+
+LUALIB_API void (luaL_where) (lua_State *L, int lvl);
+LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
+
+LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def,
+                                   const char *const lst[]);
+
+LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
+LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
+
+/* predefined references */
+#define LUA_NOREF       (-2)
+#define LUA_REFNIL      (-1)
+
+LUALIB_API int (luaL_ref) (lua_State *L, int t);
+LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
+
+LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename,
+                                               const char *mode);
+
+#define luaL_loadfile(L,f)	luaL_loadfilex(L,f,NULL)
+
+LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,
+                                   const char *name, const char *mode);
+LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
+
+LUALIB_API lua_State *(luaL_newstate) (void);
+
+LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
+
+LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
+                                                  const char *r);
+
+LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
+
+LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname);
+
+LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1,
+                                  const char *msg, int level);
+
+LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
+                                 lua_CFunction openf, int glb);
+
+/*
+** ===============================================================
+** some useful macros
+** ===============================================================
+*/
+
+
+#define luaL_newlibtable(L,l)	\
+  lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
+
+#define luaL_newlib(L,l)  \
+  (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
+
+#define luaL_argcheck(L, cond,arg,extramsg)	\
+		((void)((cond) || luaL_argerror(L, (arg), (extramsg))))
+#define luaL_checkstring(L,n)	(luaL_checklstring(L, (n), NULL))
+#define luaL_optstring(L,n,d)	(luaL_optlstring(L, (n), (d), NULL))
+
+#define luaL_typename(L,i)	lua_typename(L, lua_type(L,(i)))
+
+#define luaL_dofile(L, fn) \
+	(luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
+
+#define luaL_dostring(L, s) \
+	(luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
+
+#define luaL_getmetatable(L,n)	(lua_getfield(L, LUA_REGISTRYINDEX, (n)))
+
+#define luaL_opt(L,f,n,d)	(lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
+
+#define luaL_loadbuffer(L,s,sz,n)	luaL_loadbufferx(L,s,sz,n,NULL)
+
+
+/*
+** {======================================================
+** Generic Buffer manipulation
+** =======================================================
+*/
+
+typedef struct luaL_Buffer {
+  char *b;  /* buffer address */
+  size_t size;  /* buffer size */
+  size_t n;  /* number of characters in buffer */
+  lua_State *L;
+  char initb[LUAL_BUFFERSIZE];  /* initial buffer */
+} luaL_Buffer;
+
+
+#define luaL_addchar(B,c) \
+  ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \
+   ((B)->b[(B)->n++] = (c)))
+
+#define luaL_addsize(B,s)	((B)->n += (s))
+
+LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
+LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
+LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
+LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
+LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
+LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
+LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz);
+LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
+
+#define luaL_prepbuffer(B)	luaL_prepbuffsize(B, LUAL_BUFFERSIZE)
+
+/* }====================================================== */
+
+
+
+/*
+** {======================================================
+** File handles for IO library
+** =======================================================
+*/
+
+/*
+** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and
+** initial structure 'luaL_Stream' (it may contain other fields
+** after that initial structure).
+*/
+
+#define LUA_FILEHANDLE          "FILE*"
+
+
+typedef struct luaL_Stream {
+  FILE *f;  /* stream (NULL for incompletely created streams) */
+  lua_CFunction closef;  /* to close stream (NULL for closed streams) */
+} luaL_Stream;
+
+/* }====================================================== */
+
+
+
+/* compatibility with old module system */
+#if defined(LUA_COMPAT_MODULE)
+
+LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,
+                                   int sizehint);
+LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
+                                const luaL_Reg *l, int nup);
+
+#define luaL_register(L,n,l)	(luaL_openlib(L,(n),(l),0))
+
+#endif
+
+
+/*
+** {==================================================================
+** "Abstraction Layer" for basic report of messages and errors
+** ===================================================================
+*/
+
+/* print a string */
+#if !defined(lua_writestring)
+#define lua_writestring(s,l)   fwrite((s), sizeof(char), (l), stdout)
+#endif
+
+/* print a newline and flush the output */
+#if !defined(lua_writeline)
+#define lua_writeline()        (lua_writestring("\n", 1), fflush(stdout))
+#endif
+
+/* print an error message */
+#if !defined(lua_writestringerror)
+#define lua_writestringerror(s,p) \
+        (fprintf(stderr, (s), (p)), fflush(stderr))
+#endif
+
+/* }================================================================== */
+
+
+/*
+** {============================================================
+** Compatibility with deprecated conversions
+** =============================================================
+*/
+#if defined(LUA_COMPAT_APIINTCASTS)
+
+#define luaL_checkunsigned(L,a)	((lua_Unsigned)luaL_checkinteger(L,a))
+#define luaL_optunsigned(L,a,d)	\
+	((lua_Unsigned)luaL_optinteger(L,a,(lua_Integer)(d)))
+
+#define luaL_checkint(L,n)	((int)luaL_checkinteger(L, (n)))
+#define luaL_optint(L,n,d)	((int)luaL_optinteger(L, (n), (d)))
+
+#define luaL_checklong(L,n)	((long)luaL_checkinteger(L, (n)))
+#define luaL_optlong(L,n,d)	((long)luaL_optinteger(L, (n), (d)))
+
+#endif
+/* }============================================================ */
+
+
+
+#endif
+
+
diff --git a/vendor/lua/5.3/include/lua.h b/vendor/lua/5.3/include/lua.h
new file mode 100644
index 000000000..9394c5ef8
--- /dev/null
+++ b/vendor/lua/5.3/include/lua.h
@@ -0,0 +1,485 @@
+/*
+** 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	"3"
+#define LUA_VERSION_NUM		503
+#define LUA_VERSION_RELEASE	"6"
+
+#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) 1994-2020 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_ERRGCMM	5
+#define LUA_ERRERR	6
+
+
+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_NUMTAGS		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);
+
+
+
+/*
+** 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 lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
+
+
+LUA_API const 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 size_t          (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_newuserdata) (lua_State *L, size_t sz);
+LUA_API int   (lua_getmetatable) (lua_State *L, int objindex);
+LUA_API int  (lua_getuservalue) (lua_State *L, int idx);
+
+
+/*
+** 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 void  (lua_setuservalue) (lua_State *L, int idx);
+
+
+/*
+** '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);
+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)
+
+
+/*
+** 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
+
+LUA_API int (lua_gc) (lua_State *L, int what, int data);
+
+
+/*
+** 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);
+
+
+
+/*
+** {==============================================================
+** 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 for unsigned conversions
+** ===============================================================
+*/
+#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
+/* }============================================================== */
+
+/*
+** {======================================================================
+** 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);
+
+
+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) */
+  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) */
+  char short_src[LUA_IDSIZE]; /* (S) */
+  /* private part */
+  struct CallInfo *i_ci;  /* active function */
+};
+
+/* }====================================================================== */
+
+
+/******************************************************************************
+* Copyright (C) 1994-2020 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
diff --git a/vendor/lua/5.3/include/lua.hpp b/vendor/lua/5.3/include/lua.hpp
new file mode 100644
index 000000000..ec417f594
--- /dev/null
+++ b/vendor/lua/5.3/include/lua.hpp
@@ -0,0 +1,9 @@
+// lua.hpp
+// Lua header files for C++
+// <<extern "C">> not supplied automatically because Lua also compiles as C++
+
+extern "C" {
+#include "lua.h"
+#include "lualib.h"
+#include "lauxlib.h"
+}
diff --git a/vendor/lua/5.3/include/luaconf.h b/vendor/lua/5.3/include/luaconf.h
new file mode 100644
index 000000000..f95555689
--- /dev/null
+++ b/vendor/lua/5.3/include/luaconf.h
@@ -0,0 +1,792 @@
+/*
+** $Id: luaconf.h,v 1.259.1.1 2017/04/19 17:29:57 roberto Exp $
+** Configuration file for Lua
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef luaconf_h
+#define luaconf_h
+
+#include <limits.h>
+#include <stddef.h>
+
+
+/*
+** ===================================================================
+** Search for "@@" to find all configurable definitions.
+** ===================================================================
+*/
+
+
+/*
+** {====================================================================
+** System Configuration: macros to adapt (if needed) Lua to some
+** particular platform, for instance compiling it with 32-bit numbers or
+** restricting it to C89.
+** =====================================================================
+*/
+
+/*
+@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You
+** can also define LUA_32BITS in the make file, but changing here you
+** ensure that all software connected to Lua will be compiled with the
+** same configuration.
+*/
+/* #define LUA_32BITS */
+
+
+/*
+@@ LUA_USE_C89 controls the use of non-ISO-C89 features.
+** Define it if you want Lua to avoid the use of a few C99 features
+** or Windows-specific features on Windows.
+*/
+/* #define LUA_USE_C89 */
+
+
+/*
+** By default, Lua on Windows use (some) specific Windows features
+*/
+#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
+#define LUA_USE_WINDOWS  /* enable goodies for regular Windows */
+#endif
+
+
+#if defined(LUA_USE_WINDOWS)
+#define LUA_DL_DLL	/* enable support for DLL */
+#define LUA_USE_C89	/* broadly, Windows is C89 */
+#endif
+
+
+#if defined(LUA_USE_LINUX)
+#define LUA_USE_POSIX
+#define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
+#define LUA_USE_READLINE	/* needs some extra libraries */
+#endif
+
+
+#if defined(LUA_USE_MACOSX)
+#define LUA_USE_POSIX
+#define LUA_USE_DLOPEN		/* MacOS does not need -ldl */
+#define LUA_USE_READLINE	/* needs an extra library: -lreadline */
+#endif
+
+
+/*
+@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
+** C89 ('long' and 'double'); Windows always has '__int64', so it does
+** not need to use this case.
+*/
+#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
+#define LUA_C89_NUMBERS
+#endif
+
+
+
+/*
+@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
+*/
+/* avoid undefined shifts */
+#if ((INT_MAX >> 15) >> 15) >= 1
+#define LUAI_BITSINT	32
+#else
+/* 'int' always must have at least 16 bits */
+#define LUAI_BITSINT	16
+#endif
+
+
+/*
+@@ LUA_INT_TYPE defines the type for Lua integers.
+@@ LUA_FLOAT_TYPE defines the type for Lua floats.
+** Lua should work fine with any mix of these options (if supported
+** by your C compiler). The usual configurations are 64-bit integers
+** and 'double' (the default), 32-bit integers and 'float' (for
+** restricted platforms), and 'long'/'double' (for C compilers not
+** compliant with C99, which may not have support for 'long long').
+*/
+
+/* predefined options for LUA_INT_TYPE */
+#define LUA_INT_INT		1
+#define LUA_INT_LONG		2
+#define LUA_INT_LONGLONG	3
+
+/* predefined options for LUA_FLOAT_TYPE */
+#define LUA_FLOAT_FLOAT		1
+#define LUA_FLOAT_DOUBLE	2
+#define LUA_FLOAT_LONGDOUBLE	3
+
+#if defined(LUA_32BITS)		/* { */
+/*
+** 32-bit integers and 'float'
+*/
+#if LUAI_BITSINT >= 32  /* use 'int' if big enough */
+#define LUA_INT_TYPE	LUA_INT_INT
+#else  /* otherwise use 'long' */
+#define LUA_INT_TYPE	LUA_INT_LONG
+#endif
+#define LUA_FLOAT_TYPE	LUA_FLOAT_FLOAT
+
+#elif defined(LUA_C89_NUMBERS)	/* }{ */
+/*
+** largest types available for C89 ('long' and 'double')
+*/
+#define LUA_INT_TYPE	LUA_INT_LONG
+#define LUA_FLOAT_TYPE	LUA_FLOAT_DOUBLE
+
+#endif				/* } */
+
+
+/*
+** default configuration for 64-bit Lua ('long long' and 'double')
+*/
+#if !defined(LUA_INT_TYPE)
+#define LUA_INT_TYPE	LUA_INT_LONGLONG
+#endif
+
+#if !defined(LUA_FLOAT_TYPE)
+#define LUA_FLOAT_TYPE	LUA_FLOAT_DOUBLE
+#endif
+
+/* }================================================================== */
+
+
+
+
+/*
+** {==================================================================
+** Configuration for Paths.
+** ===================================================================
+*/
+
+/*
+** LUA_PATH_SEP is the character that separates templates in a path.
+** LUA_PATH_MARK is the string that marks the substitution points in a
+** template.
+** LUA_EXEC_DIR in a Windows path is replaced by the executable's
+** directory.
+*/
+#define LUA_PATH_SEP            ";"
+#define LUA_PATH_MARK           "?"
+#define LUA_EXEC_DIR            "!"
+
+
+/*
+@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
+** Lua libraries.
+@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
+** C libraries.
+** CHANGE them if your machine has a non-conventional directory
+** hierarchy or if you want to install your libraries in
+** non-conventional directories.
+*/
+#define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
+#if defined(_WIN32)	/* { */
+/*
+** In Windows, any exclamation mark ('!') in the path is replaced by the
+** path of the directory of the executable file of the current process.
+*/
+#define LUA_LDIR	"!\\lua\\"
+#define LUA_CDIR	"!\\"
+#define LUA_SHRDIR	"!\\..\\share\\lua\\" LUA_VDIR "\\"
+#define LUA_PATH_DEFAULT  \
+		LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
+		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" \
+		LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
+		".\\?.lua;" ".\\?\\init.lua"
+#define LUA_CPATH_DEFAULT \
+		LUA_CDIR"?.dll;" \
+		LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
+		LUA_CDIR"loadall.dll;" ".\\?.dll;" \
+		LUA_CDIR"?53.dll;" ".\\?53.dll"
+
+#else			/* }{ */
+
+#define LUA_ROOT	"/usr/local/"
+#define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR "/"
+#define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR "/"
+#define LUA_PATH_DEFAULT  \
+		LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
+		LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" \
+		"./?.lua;" "./?/init.lua"
+#define LUA_CPATH_DEFAULT \
+		LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so;" \
+		LUA_CDIR"lib?53.so;" "./lib?53.so"
+#endif			/* } */
+
+
+/*
+@@ LUA_DIRSEP is the directory separator (for submodules).
+** CHANGE it if your machine does not use "/" as the directory separator
+** and is not Windows. (On Windows Lua automatically uses "\".)
+*/
+#if defined(_WIN32)
+#define LUA_DIRSEP	"\\"
+#else
+#define LUA_DIRSEP	"/"
+#endif
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Marks for exported symbols in the C code
+** ===================================================================
+*/
+
+/*
+@@ LUA_API is a mark for all core API functions.
+@@ LUALIB_API is a mark for all auxiliary library functions.
+@@ LUAMOD_API is a mark for all standard library opening functions.
+** CHANGE them if you need to define those functions in some special way.
+** For instance, if you want to create one Windows DLL with the core and
+** the libraries, you may want to use the following definition (define
+** LUA_BUILD_AS_DLL to get it).
+*/
+#if defined(LUA_BUILD_AS_DLL)	/* { */
+
+#if defined(LUA_CORE) || defined(LUA_LIB)	/* { */
+#define LUA_API __declspec(dllexport)
+#else						/* }{ */
+#define LUA_API __declspec(dllimport)
+#endif						/* } */
+
+#else				/* }{ */
+
+#define LUA_API		extern
+
+#endif				/* } */
+
+
+/* more often than not the libs go together with the core */
+#define LUALIB_API	LUA_API
+#define LUAMOD_API	LUALIB_API
+
+
+/*
+@@ LUAI_FUNC is a mark for all extern functions that are not to be
+** exported to outside modules.
+@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
+** that are not to be exported to outside modules (LUAI_DDEF for
+** definitions and LUAI_DDEC for declarations).
+** CHANGE them if you need to mark them in some special way. Elf/gcc
+** (versions 3.2 and later) mark them as "hidden" to optimize access
+** when Lua is compiled as a shared library. Not all elf targets support
+** this attribute. Unfortunately, gcc does not offer a way to check
+** whether the target offers that support, and those without support
+** give a warning about it. To avoid these warnings, change to the
+** default definition.
+*/
+#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
+    defined(__ELF__)		/* { */
+#define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
+#else				/* }{ */
+#define LUAI_FUNC	extern
+#endif				/* } */
+
+#define LUAI_DDEC	LUAI_FUNC
+#define LUAI_DDEF	/* empty */
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Compatibility with previous versions
+** ===================================================================
+*/
+
+/*
+@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
+@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
+** You can define it to get all options, or change specific options
+** to fit your specific needs.
+*/
+#if defined(LUA_COMPAT_5_2)	/* { */
+
+/*
+@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
+** functions in the mathematical library.
+*/
+#define LUA_COMPAT_MATHLIB
+
+/*
+@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
+*/
+#define LUA_COMPAT_BITLIB
+
+/*
+@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
+*/
+#define LUA_COMPAT_IPAIRS
+
+/*
+@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
+** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
+** luaL_checkint, luaL_checklong, etc.)
+*/
+#define LUA_COMPAT_APIINTCASTS
+
+#endif				/* } */
+
+
+#if defined(LUA_COMPAT_5_1)	/* { */
+
+/* Incompatibilities from 5.2 -> 5.3 */
+#define LUA_COMPAT_MATHLIB
+#define LUA_COMPAT_APIINTCASTS
+
+/*
+@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
+** You can replace it with 'table.unpack'.
+*/
+#define LUA_COMPAT_UNPACK
+
+/*
+@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
+** You can replace it with 'package.searchers'.
+*/
+#define LUA_COMPAT_LOADERS
+
+/*
+@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
+** You can call your C function directly (with light C functions).
+*/
+#define lua_cpcall(L,f,u)  \
+	(lua_pushcfunction(L, (f)), \
+	 lua_pushlightuserdata(L,(u)), \
+	 lua_pcall(L,1,0,0))
+
+
+/*
+@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
+** You can rewrite 'log10(x)' as 'log(x, 10)'.
+*/
+#define LUA_COMPAT_LOG10
+
+/*
+@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
+** library. You can rewrite 'loadstring(s)' as 'load(s)'.
+*/
+#define LUA_COMPAT_LOADSTRING
+
+/*
+@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
+*/
+#define LUA_COMPAT_MAXN
+
+/*
+@@ The following macros supply trivial compatibility for some
+** changes in the API. The macros themselves document how to
+** change your code to avoid using them.
+*/
+#define lua_strlen(L,i)		lua_rawlen(L, (i))
+
+#define lua_objlen(L,i)		lua_rawlen(L, (i))
+
+#define lua_equal(L,idx1,idx2)		lua_compare(L,(idx1),(idx2),LUA_OPEQ)
+#define lua_lessthan(L,idx1,idx2)	lua_compare(L,(idx1),(idx2),LUA_OPLT)
+
+/*
+@@ LUA_COMPAT_MODULE controls compatibility with previous
+** module functions 'module' (Lua) and 'luaL_register' (C).
+*/
+#define LUA_COMPAT_MODULE
+
+#endif				/* } */
+
+
+/*
+@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
+@@ a float mark ('.0').
+** This macro is not on by default even in compatibility mode,
+** because this is not really an incompatibility.
+*/
+/* #define LUA_COMPAT_FLOATSTRING */
+
+/* }================================================================== */
+
+
+
+/*
+** {==================================================================
+** Configuration for Numbers.
+** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
+** satisfy your needs.
+** ===================================================================
+*/
+
+/*
+@@ LUA_NUMBER is the floating-point type used by Lua.
+@@ LUAI_UACNUMBER is the result of a 'default argument promotion'
+@@ over a floating number.
+@@ l_mathlim(x) corrects limit name 'x' to the proper float type
+** by prefixing it with one of FLT/DBL/LDBL.
+@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
+@@ LUA_NUMBER_FMT is the format for writing floats.
+@@ lua_number2str converts a float to a string.
+@@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
+@@ l_floor takes the floor of a float.
+@@ lua_str2number converts a decimal numeric string to a number.
+*/
+
+
+/* The following definitions are good for most cases here */
+
+#define l_floor(x)		(l_mathop(floor)(x))
+
+#define lua_number2str(s,sz,n)  \
+	l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
+
+/*
+@@ lua_numbertointeger converts a float number to an integer, or
+** returns 0 if float is not within the range of a lua_Integer.
+** (The range comparisons are tricky because of rounding. The tests
+** here assume a two-complement representation, where MININTEGER always
+** has an exact representation as a float; MAXINTEGER may not have one,
+** and therefore its conversion to float may have an ill-defined value.)
+*/
+#define lua_numbertointeger(n,p) \
+  ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
+   (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
+      (*(p) = (LUA_INTEGER)(n), 1))
+
+
+/* now the variable definitions */
+
+#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT		/* { single float */
+
+#define LUA_NUMBER	float
+
+#define l_mathlim(n)		(FLT_##n)
+
+#define LUAI_UACNUMBER	double
+
+#define LUA_NUMBER_FRMLEN	""
+#define LUA_NUMBER_FMT		"%.7g"
+
+#define l_mathop(op)		op##f
+
+#define lua_str2number(s,p)	strtof((s), (p))
+
+
+#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE	/* }{ long double */
+
+#define LUA_NUMBER	long double
+
+#define l_mathlim(n)		(LDBL_##n)
+
+#define LUAI_UACNUMBER	long double
+
+#define LUA_NUMBER_FRMLEN	"L"
+#define LUA_NUMBER_FMT		"%.19Lg"
+
+#define l_mathop(op)		op##l
+
+#define lua_str2number(s,p)	strtold((s), (p))
+
+#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE	/* }{ double */
+
+#define LUA_NUMBER	double
+
+#define l_mathlim(n)		(DBL_##n)
+
+#define LUAI_UACNUMBER	double
+
+#define LUA_NUMBER_FRMLEN	""
+#define LUA_NUMBER_FMT		"%.14g"
+
+#define l_mathop(op)		op
+
+#define lua_str2number(s,p)	strtod((s), (p))
+
+#else						/* }{ */
+
+#error "numeric float type not defined"
+
+#endif					/* } */
+
+
+
+/*
+@@ LUA_INTEGER is the integer type used by Lua.
+**
+@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
+**
+@@ LUAI_UACINT is the result of a 'default argument promotion'
+@@ over a lUA_INTEGER.
+@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
+@@ LUA_INTEGER_FMT is the format for writing integers.
+@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
+@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
+@@ lua_integer2str converts an integer to a string.
+*/
+
+
+/* The following definitions are good for most cases here */
+
+#define LUA_INTEGER_FMT		"%" LUA_INTEGER_FRMLEN "d"
+
+#define LUAI_UACINT		LUA_INTEGER
+
+#define lua_integer2str(s,sz,n)  \
+	l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))
+
+/*
+** use LUAI_UACINT here to avoid problems with promotions (which
+** can turn a comparison between unsigneds into a signed comparison)
+*/
+#define LUA_UNSIGNED		unsigned LUAI_UACINT
+
+
+/* now the variable definitions */
+
+#if LUA_INT_TYPE == LUA_INT_INT		/* { int */
+
+#define LUA_INTEGER		int
+#define LUA_INTEGER_FRMLEN	""
+
+#define LUA_MAXINTEGER		INT_MAX
+#define LUA_MININTEGER		INT_MIN
+
+#elif LUA_INT_TYPE == LUA_INT_LONG	/* }{ long */
+
+#define LUA_INTEGER		long
+#define LUA_INTEGER_FRMLEN	"l"
+
+#define LUA_MAXINTEGER		LONG_MAX
+#define LUA_MININTEGER		LONG_MIN
+
+#elif LUA_INT_TYPE == LUA_INT_LONGLONG	/* }{ long long */
+
+/* use presence of macro LLONG_MAX as proxy for C99 compliance */
+#if defined(LLONG_MAX)		/* { */
+/* use ISO C99 stuff */
+
+#define LUA_INTEGER		long long
+#define LUA_INTEGER_FRMLEN	"ll"
+
+#define LUA_MAXINTEGER		LLONG_MAX
+#define LUA_MININTEGER		LLONG_MIN
+
+#elif defined(LUA_USE_WINDOWS) /* }{ */
+/* in Windows, can use specific Windows types */
+
+#define LUA_INTEGER		__int64
+#define LUA_INTEGER_FRMLEN	"I64"
+
+#define LUA_MAXINTEGER		_I64_MAX
+#define LUA_MININTEGER		_I64_MIN
+
+#else				/* }{ */
+
+#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
+  or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
+
+#endif				/* } */
+
+#else				/* }{ */
+
+#error "numeric integer type not defined"
+
+#endif				/* } */
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Dependencies with C99 and other C details
+** ===================================================================
+*/
+
+/*
+@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89.
+** (All uses in Lua have only one format item.)
+*/
+#if !defined(LUA_USE_C89)
+#define l_sprintf(s,sz,f,i)	snprintf(s,sz,f,i)
+#else
+#define l_sprintf(s,sz,f,i)	((void)(sz), sprintf(s,f,i))
+#endif
+
+
+/*
+@@ lua_strx2number converts an hexadecimal numeric string to a number.
+** In C99, 'strtod' does that conversion. Otherwise, you can
+** leave 'lua_strx2number' undefined and Lua will provide its own
+** implementation.
+*/
+#if !defined(LUA_USE_C89)
+#define lua_strx2number(s,p)		lua_str2number(s,p)
+#endif
+
+
+/*
+@@ lua_pointer2str converts a pointer to a readable string in a
+** non-specified way.
+*/
+#define lua_pointer2str(buff,sz,p)	l_sprintf(buff,sz,"%p",p)
+
+
+/*
+@@ lua_number2strx converts a float to an hexadecimal numeric string.
+** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
+** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
+** provide its own implementation.
+*/
+#if !defined(LUA_USE_C89)
+#define lua_number2strx(L,b,sz,f,n)  \
+	((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))
+#endif
+
+
+/*
+** 'strtof' and 'opf' variants for math functions are not valid in
+** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
+** availability of these variants. ('math.h' is already included in
+** all files that use these macros.)
+*/
+#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
+#undef l_mathop  /* variants not available */
+#undef lua_str2number
+#define l_mathop(op)		(lua_Number)op  /* no variant */
+#define lua_str2number(s,p)	((lua_Number)strtod((s), (p)))
+#endif
+
+
+/*
+@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
+** functions.  It must be a numerical type; Lua will use 'intptr_t' if
+** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
+** 'intptr_t' in C89)
+*/
+#define LUA_KCONTEXT	ptrdiff_t
+
+#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
+    __STDC_VERSION__ >= 199901L
+#include <stdint.h>
+#if defined(INTPTR_MAX)  /* even in C99 this type is optional */
+#undef LUA_KCONTEXT
+#define LUA_KCONTEXT	intptr_t
+#endif
+#endif
+
+
+/*
+@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
+** Change that if you do not want to use C locales. (Code using this
+** macro must include header 'locale.h'.)
+*/
+#if !defined(lua_getlocaledecpoint)
+#define lua_getlocaledecpoint()		(localeconv()->decimal_point[0])
+#endif
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Language Variations
+** =====================================================================
+*/
+
+/*
+@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some
+** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from
+** numbers to strings. Define LUA_NOCVTS2N to turn off automatic
+** coercion from strings to numbers.
+*/
+/* #define LUA_NOCVTN2S */
+/* #define LUA_NOCVTS2N */
+
+
+/*
+@@ LUA_USE_APICHECK turns on several consistency checks on the C API.
+** Define it as a help when debugging C code.
+*/
+#if defined(LUA_USE_APICHECK)
+#include <assert.h>
+#define luai_apicheck(l,e)	assert(e)
+#endif
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Macros that affect the API and must be stable (that is, must be the
+** same when you compile Lua and when you compile code that links to
+** Lua). You probably do not want/need to change them.
+** =====================================================================
+*/
+
+/*
+@@ LUAI_MAXSTACK limits the size of the Lua stack.
+** CHANGE it if you need a different limit. This limit is arbitrary;
+** its only purpose is to stop Lua from consuming unlimited stack
+** space (and to reserve some numbers for pseudo-indices).
+*/
+#if LUAI_BITSINT >= 32
+#define LUAI_MAXSTACK		1000000
+#else
+#define LUAI_MAXSTACK		15000
+#endif
+
+
+/*
+@@ LUA_EXTRASPACE defines the size of a raw memory area associated with
+** a Lua state with very fast access.
+** CHANGE it if you need a different size.
+*/
+#define LUA_EXTRASPACE		(sizeof(void *))
+
+
+/*
+@@ LUA_IDSIZE gives the maximum size for the description of the source
+@@ of a function in debug information.
+** CHANGE it if you want a different size.
+*/
+#define LUA_IDSIZE	60
+
+
+/*
+@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
+** CHANGE it if it uses too much C-stack space. (For long double,
+** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a
+** smaller buffer would force a memory allocation for each call to
+** 'string.format'.)
+*/
+#if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE
+#define LUAL_BUFFERSIZE		8192
+#else
+#define LUAL_BUFFERSIZE   ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
+#endif
+
+/* }================================================================== */
+
+
+/*
+@@ LUA_QL describes how error messages quote program elements.
+** Lua does not use these macros anymore; they are here for
+** compatibility only.
+*/
+#define LUA_QL(x)	"'" x "'"
+#define LUA_QS		LUA_QL("%s")
+
+
+
+
+/* =================================================================== */
+
+/*
+** Local configuration. You can use this space to add your redefinitions
+** without modifying the main part of the file.
+*/
+
+
+
+
+
+#endif
+
diff --git a/vendor/lua/5.3/include/lualib.h b/vendor/lua/5.3/include/lualib.h
new file mode 100644
index 000000000..f5304aa0d
--- /dev/null
+++ b/vendor/lua/5.3/include/lualib.h
@@ -0,0 +1,61 @@
+/*
+** $Id: lualib.h,v 1.45.1.1 2017/04/19 17:20:42 roberto Exp $
+** Lua standard libraries
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef lualib_h
+#define lualib_h
+
+#include "lua.h"
+
+
+/* version suffix for environment variable names */
+#define LUA_VERSUFFIX          "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
+
+
+LUAMOD_API int (luaopen_base) (lua_State *L);
+
+#define LUA_COLIBNAME	"coroutine"
+LUAMOD_API int (luaopen_coroutine) (lua_State *L);
+
+#define LUA_TABLIBNAME	"table"
+LUAMOD_API int (luaopen_table) (lua_State *L);
+
+#define LUA_IOLIBNAME	"io"
+LUAMOD_API int (luaopen_io) (lua_State *L);
+
+#define LUA_OSLIBNAME	"os"
+LUAMOD_API int (luaopen_os) (lua_State *L);
+
+#define LUA_STRLIBNAME	"string"
+LUAMOD_API int (luaopen_string) (lua_State *L);
+
+#define LUA_UTF8LIBNAME	"utf8"
+LUAMOD_API int (luaopen_utf8) (lua_State *L);
+
+#define LUA_BITLIBNAME	"bit32"
+LUAMOD_API int (luaopen_bit32) (lua_State *L);
+
+#define LUA_MATHLIBNAME	"math"
+LUAMOD_API int (luaopen_math) (lua_State *L);
+
+#define LUA_DBLIBNAME	"debug"
+LUAMOD_API int (luaopen_debug) (lua_State *L);
+
+#define LUA_LOADLIBNAME	"package"
+LUAMOD_API int (luaopen_package) (lua_State *L);
+
+
+/* open all previous libraries */
+LUALIB_API void (luaL_openlibs) (lua_State *L);
+
+
+
+#if !defined(lua_assert)
+#define lua_assert(x)	((void)0)
+#endif
+
+
+#endif
diff --git a/vendor/lua/5.3/linux/liblua53.a b/vendor/lua/5.3/linux/liblua53.a
new file mode 100644
index 000000000..67b462b1b
--- /dev/null
+++ b/vendor/lua/5.3/linux/liblua53.a
diff --git a/vendor/lua/5.3/linux/liblua53.so b/vendor/lua/5.3/linux/liblua53.so
new file mode 100644
index 000000000..83c5fbd68
--- /dev/null
+++ b/vendor/lua/5.3/linux/liblua53.so
diff --git a/vendor/lua/5.3/lua.odin b/vendor/lua/5.3/lua.odin
new file mode 100644
index 000000000..d7884e852
--- /dev/null
+++ b/vendor/lua/5.3/lua.odin
@@ -0,0 +1,759 @@
+package lua_5_3
+
+import "core:intrinsics"
+import "core:builtin"
+
+import c "core:c/libc"
+
+#assert(size_of(c.int) == size_of(b32))
+
+when ODIN_OS == .Windows {
+	foreign import lib "windows/lua53dll.lib"
+} else when ODIN_OS == .Linux {
+	foreign import lib "linux/liblua53.a"
+} else {
+	#panic(`Unsupported platform of "vendor:lua/5.3"`)
+}
+
+VERSION_MAJOR       :: "5"
+VERSION_MINOR       :: "3"
+VERSION_NUM         :: 503
+VERSION_RELEASE     :: "6"
+
+VERSION             :: "Lua " + VERSION_MAJOR + "." + VERSION_MINOR
+RELEASE             :: VERSION + "." + VERSION_RELEASE
+COPYRIGHT           :: RELEASE + "  Copyright (C) 1994-2020 Lua.org, PUC-Rio"
+AUTHORS             :: "R. Ierusalimschy, L. H. de Figueiredo, W. Celes"
+
+
+/* mark for precompiled code ('<esc>Lua') */
+SIGNATURE :: "\x1bLua"
+
+/* option for multiple returns in 'lua_pcall' and 'lua_call' */
+MULTRET :: -1
+
+REGISTRYINDEX :: -MAXSTACK - 1000
+
+
+/*
+@@ LUAI_MAXSTACK limits the size of the Lua stack.
+** CHANGE it if you need a different limit. This limit is arbitrary;
+** its only purpose is to stop Lua from consuming unlimited stack
+** space (and to reserve some numbers for pseudo-indices).
+** (It must fit into max(size_t)/32.)
+*/
+MAXSTACK :: 1000000 when size_of(rawptr) == 4 else 15000
+
+
+/*
+@@ LUA_EXTRASPACE defines the size of a raw memory area associated with
+** a Lua state with very fast access.
+** CHANGE it if you need a different size.
+*/
+EXTRASPACE :: size_of(rawptr)
+
+
+
+/*
+@@ LUA_IDSIZE gives the maximum size for the description of the source
+@@ of a function in debug information.
+** CHANGE it if you want a different size.
+*/
+IDSIZE :: 60
+
+
+/*
+@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
+*/
+L_BUFFERSIZE :: c.int(16 * size_of(rawptr) * size_of(Number))
+
+
+MAXALIGNVAL :: max(align_of(Number), align_of(f64), align_of(rawptr), align_of(Integer), align_of(c.long))
+
+
+Status :: enum c.int {
+	OK        = 0,
+	YIELD     = 1,
+	ERRRUN    = 2,
+	ERRSYNTAX = 3,
+	ERRMEM    = 4,
+	ERRERR    = 5,
+	ERRGCMM   = 6,
+	ERRFILE   = 7,
+}
+
+/* thread status */
+OK        :: Status.OK
+YIELD     :: Status.YIELD
+ERRRUN    :: Status.ERRRUN
+ERRSYNTAX :: Status.ERRSYNTAX
+ERRMEM    :: Status.ERRMEM
+ERRERR    :: Status.ERRERR
+ERRFILE   :: Status.ERRFILE
+
+/*
+** basic types
+*/
+
+
+Type :: enum c.int {
+	NONE          = -1,
+
+	NIL           = 0,
+	BOOLEAN       = 1,
+	LIGHTUSERDATA = 2,
+	NUMBER        = 3,
+	STRING        = 4,
+	TABLE         = 5,
+	FUNCTION      = 6,
+	USERDATA      = 7,
+	THREAD        = 8,
+}
+
+TNONE          :: Type.NONE
+TNIL           :: Type.NIL
+TBOOLEAN       :: Type.BOOLEAN
+TLIGHTUSERDATA :: Type.LIGHTUSERDATA
+TNUMBER        :: Type.NUMBER
+TSTRING        :: Type.STRING
+TTABLE         :: Type.TABLE
+TFUNCTION      :: Type.FUNCTION
+TUSERDATA      :: Type.USERDATA
+TTHREAD        :: Type.THREAD
+NUMTYPES :: 9
+
+
+
+ArithOp :: enum c.int {
+	ADD  = 0,	/* ORDER TM, ORDER OP */
+	SUB  = 1,
+	MUL  = 2,
+	MOD  = 3,
+	POW  = 4,
+	DIV  = 5,
+	IDIV = 6,
+	BAND = 7,
+	BOR  = 8,
+	BXOR = 9,
+	SHL  = 10,
+	SHR  = 11,
+	UNM  = 12,
+	BNOT = 13,
+}
+
+CompareOp :: enum c.int {
+	EQ = 0,
+	LT = 1,
+	LE = 2,
+}
+
+OPADD  :: ArithOp.ADD
+OPSUB  :: ArithOp.SUB
+OPMUL  :: ArithOp.MUL
+OPMOD  :: ArithOp.MOD
+OPPOW  :: ArithOp.POW
+OPDIV  :: ArithOp.DIV
+OPIDIV :: ArithOp.IDIV
+OPBAND :: ArithOp.BAND
+OPBOR  :: ArithOp.BOR
+OPBXOR :: ArithOp.BXOR
+OPSHL  :: ArithOp.SHL
+OPSHR  :: ArithOp.SHR
+OPUNM  :: ArithOp.UNM
+OPBNOT :: ArithOp.BNOT
+
+OPEQ :: CompareOp.EQ
+OPLT :: CompareOp.LT
+OPLE :: CompareOp.LE
+
+
+/* minimum Lua stack available to a C function */
+MINSTACK :: 20
+
+
+/* predefined values in the registry */
+RIDX_MAINTHREAD :: 1
+RIDX_GLOBALS    :: 2
+RIDX_LAST       :: RIDX_GLOBALS
+
+
+/* type of numbers in Lua */
+Number :: distinct (f32 when size_of(uintptr) == 4 else f64)
+
+
+/* type for integer functions */
+Integer :: distinct (i32 when size_of(uintptr) == 4 else i64)
+
+/* unsigned integer type */
+Unsigned :: distinct (u32 when size_of(uintptr) == 4 else u64)
+
+/* type for continuation-function contexts */
+KContext :: distinct int
+
+
+/*
+** Type for C functions registered with Lua
+*/
+CFunction :: #type proc "c" (L: ^State) -> c.int
+
+/*
+** Type for continuation functions
+*/
+KFunction :: #type proc "c" (L: ^State, status: c.int, ctx: KContext) -> c.int
+
+
+/*
+** Type for functions that read/write blocks when loading/dumping Lua chunks
+*/
+Reader :: #type proc "c" (L: ^State, ud: rawptr, sz: ^c.size_t) -> cstring
+Writer :: #type proc "c" (L: ^State, p: rawptr, sz: ^c.size_t, ud: rawptr) -> c.int
+
+
+/*
+** Type for memory-allocation functions
+*/
+Alloc :: #type proc "c" (ud: rawptr, ptr: rawptr, osize, nsize: c.size_t) -> rawptr
+
+
+GCWhat :: enum c.int {
+	STOP       = 0,
+	RESTART    = 1,
+	COLLECT    = 2,
+	COUNT      = 3,
+	COUNTB     = 4,
+	STEP       = 5,
+	SETPAUSE   = 6,
+	SETSTEPMUL = 7,
+	ISRUNNING  = 9,
+}
+GCSTOP       :: GCWhat.STOP
+GCRESTART    :: GCWhat.RESTART
+GCCOLLECT    :: GCWhat.COLLECT
+GCCOUNT      :: GCWhat.COUNT
+GCCOUNTB     :: GCWhat.COUNTB
+GCSTEP       :: GCWhat.STEP
+GCSETPAUSE   :: GCWhat.SETPAUSE
+GCSETSTEPMUL :: GCWhat.SETSTEPMUL
+GCISRUNNING  :: GCWhat.ISRUNNING
+
+
+
+/*
+** Event codes
+*/
+
+HookEvent :: enum c.int {
+	CALL     = 0,
+	RET      = 1,
+	LINE     = 2,
+	COUNT    = 3,
+	TAILCALL = 4,
+}
+HOOKCALL     :: HookEvent.CALL
+HOOKRET      :: HookEvent.RET
+HOOKLINE     :: HookEvent.LINE
+HOOKCOUNT    :: HookEvent.COUNT
+HOOKTAILCALL :: HookEvent.TAILCALL
+
+
+/*
+** Event masks
+*/
+HookMask :: distinct bit_set[HookEvent; c.int]
+MASKCALL  :: HookMask{.CALL}
+MASKRET   :: HookMask{.RET}
+MASKLINE  :: HookMask{.LINE}
+MASKCOUNT :: HookMask{.COUNT}
+
+/* activation record */
+Debug :: struct {
+	event:           HookEvent,
+	name:            cstring,                  /* (n) */
+	namewhat:        cstring,                  /* (n) 'global', 'local', 'field', 'method' */
+	what:            cstring,                  /* (S) 'Lua', 'C', 'main', 'tail' */
+	source:          cstring,                  /* (S) */
+	currentline:     c.int,                    /* (l) */
+	linedefined:     c.int,                    /* (S) */
+	lastlinedefined: c.int,                    /* (S) */
+	nups:            u8,                       /* (u) number of upvalues */
+	nparams:         u8,                       /* (u) number of parameters */
+	isvararg:        bool,                     /* (u) */
+	istailcall:      bool,                     /* (t) */
+	short_src:       [IDSIZE]u8 `fmt:"s"`, /* (S) */
+	/* private part */
+	i_ci:            rawptr,                   /* active function */
+}
+
+
+/* Functions to be called by the debugger in specific events */
+Hook :: #type proc "c" (L: ^State, ar: ^Debug)
+
+
+State :: struct {} // opaque data type
+
+
+@(link_prefix="lua_")
+@(default_calling_convention="c")
+foreign lib {
+	/*
+	** RCS ident string
+	*/
+
+	ident: [^]u8 // TODO(bill): is this correct?
+
+
+	/*
+	** state manipulation
+	*/
+
+	newstate  :: proc(f: Alloc, ud: rawptr) -> ^State ---
+	close     :: proc(L: ^State) ---
+	newthread :: proc(L: ^State) -> ^State ---
+
+	atpanic :: proc(L: ^State, panicf: CFunction) -> CFunction ---
+
+	version :: proc(L: ^State) -> ^Number ---
+
+
+	/*
+	** basic stack manipulation
+	*/
+
+	absindex   :: proc (L: ^State, idx: c.int) -> c.int ---
+	gettop     :: proc (L: ^State) -> c.int ---
+	settop     :: proc (L: ^State, idx: c.int) ---
+	pushvalue  :: proc (L: ^State, idx: c.int) ---
+	rotate     :: proc (L: ^State, idx: c.int, n: c.int) ---
+	copy       :: proc (L: ^State, fromidx, toidx: c.int) ---
+	checkstack :: proc (L: ^State, n: c.int) -> c.int ---
+
+	xmove :: proc(from, to: ^State, n: c.int) ---
+
+
+	/*
+	** access functions (stack -> C)
+	*/
+
+	isnumber    :: proc(L: ^State, idx: c.int) -> b32 ---
+	isstring    :: proc(L: ^State, idx: c.int) -> b32 ---
+	iscfunction :: proc(L: ^State, idx: c.int) -> b32 ---
+	isinteger   :: proc(L: ^State, idx: c.int) -> b32 ---
+	isuserdata  :: proc(L: ^State, idx: c.int) -> b32 ---
+	type        :: proc(L: ^State, idx: c.int) -> Type ---
+	typename    :: proc(L: ^State, tp: Type) -> cstring ---
+
+	@(link_name="lua_tonumberx")
+	tonumber    :: proc(L: ^State, idx: c.int, isnum: ^c.int = nil) -> Number ---
+	@(link_name="lua_tointegerx")
+	tointeger   :: proc(L: ^State, idx: c.int, isnum: ^c.int = nil) -> Integer ---
+	toboolean   :: proc(L: ^State, idx: c.int) -> b32 ---
+	tolstring   :: proc(L: ^State, idx: c.int, len: ^c.size_t) -> cstring ---
+	rawlen      :: proc(L: ^State, idx: c.int) -> c.size_t ---
+	tocfunction :: proc(L: ^State, idx: c.int) -> CFunction ---
+	touserdata  :: proc(L: ^State, idx: c.int) -> rawptr ---
+	tothread    :: proc(L: ^State, idx: c.int) -> ^State ---
+	topointer   :: proc(L: ^State, idx: c.int) -> rawptr ---
+
+	/*
+	** Comparison and arithmetic functions
+	*/
+
+	arith    :: proc(L: ^State, op: ArithOp) ---
+	rawequal :: proc(L: ^State, idx1, idx2: c.int) -> b32 ---
+	compare  :: proc(L: ^State, idx1, idx2: c.int, op: CompareOp) -> b32 ---
+
+	/*
+	** push functions (C -> stack)
+	*/
+
+	pushnil      :: proc(L: ^State) ---
+	pushnumber   :: proc(L: ^State, n: Number) ---
+	pushinteger  :: proc(L: ^State, n: Integer) ---
+	pushlstring  :: proc(L: ^State, s: cstring, len: cstring) -> cstring ---
+	pushstring   :: proc(L: ^State, s: cstring) -> cstring ---
+	pushvfstring :: proc(L: ^State, fmt: cstring, argp: c.va_list) -> cstring ---
+	pushfstring       :: proc(L: ^State, fmt: cstring, #c_vararg args: ..any) -> cstring ---
+	pushcclosure      :: proc(L: ^State, fn: CFunction, n: c.int) ---
+	pushboolean       :: proc(L: ^State, b: b32) ---
+	pushlightuserdata :: proc(L: ^State, p: rawptr) ---
+	pushthread        :: proc(L: ^State) -> Status ---
+
+	/*
+	** get functions (Lua -> stack)
+	*/
+
+	getglobal :: proc(L: ^State, name: cstring) -> c.int ---
+	gettable  :: proc(L: ^State, idx: c.int) -> c.int ---
+	getfield  :: proc(L: ^State, idx: c.int, k: cstring) -> c.int ---
+	geti      :: proc(L: ^State, idx: c.int, n: Integer) -> c.int ---
+	rawget    :: proc(L: ^State, idx: c.int) -> c.int ---
+	rawgeti   :: proc(L: ^State, idx: c.int, n: Integer) -> c.int ---
+	rawgetp   :: proc(L: ^State, idx: c.int, p: rawptr) -> c.int ---
+
+	createtable  :: proc(L: ^State, narr, nrec: c.int) ---
+	newuserdata  :: proc(L: ^State, sz: c.size_t) -> rawptr ---
+	getmetatable :: proc(L: ^State, objindex: c.int) -> c.int ---
+	getuservalue :: proc(L: ^State, idx: c.int) -> c.int ---
+
+
+	/*
+	** set functions (stack -> Lua)
+	*/
+
+	setglobal    :: proc(L: ^State, name: cstring) ---
+	settable     :: proc(L: ^State, idx: c.int) ---
+	setfield     :: proc(L: ^State, idx: c.int, k: cstring) ---
+	seti         :: proc(L: ^State, idx: c.int, n: Integer) ---
+	rawset       :: proc(L: ^State, idx: c.int) ---
+	rawseti      :: proc(L: ^State, idx: c.int, n: Integer) ---
+	rawsetp      :: proc(L: ^State, idx: c.int, p: rawptr) ---
+	setmetatable :: proc(L: ^State, objindex: c.int) -> c.int ---
+	setuservalue :: proc(L: ^State, idx: c.int) -> c.int ---
+
+
+	/*
+	** 'load' and 'call' functions (load and run Lua code)
+	*/
+
+	@(link_name="lua_callk")
+	call :: proc(L: ^State, nargs, nresults: c.int,
+	             ctx: KContext = 0, k: KFunction = nil) ---
+
+	@(link_name="lua_pcallk")
+	pcall :: proc(L: ^State, nargs, nresults: c.int, errfunc: c.int,
+	              ctx: KContext = 0, k: KFunction = nil) -> c.int ---
+
+	load :: proc(L: ^State, reader: Reader, dt: rawptr,
+	             chunkname, mode: cstring) -> Status ---
+
+	dump :: proc(L: ^State, writer: Writer, data: rawptr, strip: b32) -> Status ---
+
+
+	/*
+	** coroutine functions
+	*/
+
+	@(link_name="lua_yieldk")
+	yield       :: proc(L: ^State, nresults: c.int, ctx: KContext = 0, k: KFunction = nil) -> Status ---
+	resume      :: proc(L: ^State, from: ^State, narg: c.int) -> Status ---
+	status      :: proc(L: ^State) -> Status ---
+	isyieldable :: proc(L: ^State) -> b32 ---
+
+
+	/*
+	** garbage-collection function and options
+	*/
+
+
+
+	gc :: proc(L: ^State, what: GCWhat, data: c.int) -> c.int ---
+
+
+	/*
+	** miscellaneous functions
+	*/
+
+	error :: proc(L: ^State) -> Status ---
+
+	next :: proc(L: ^State, idx: c.int) -> c.int ---
+
+	concat :: proc(L: ^State, n: c.int) ---
+	len    :: proc(L: ^State, idx: c.int) ---
+
+	stringtonumber :: proc(L: ^State, s: cstring) -> c.size_t ---
+
+	getallocf :: proc(L: State, ud: ^rawptr) -> Alloc ---
+	setallocf :: proc(L: ^State, f: Alloc, ud: rawptr) ---
+
+	/*
+	** {======================================================================
+	** Debug API
+	** =======================================================================
+	*/
+
+	getstack   :: proc(L: ^State, level: c.int, ar: ^Debug) -> c.int ---
+	getinfo    :: proc(L: ^State, what: cstring, ar: ^Debug) -> c.int ---
+	getlocal   :: proc(L: ^State, ar: ^Debug, n: c.int) -> cstring ---
+	setlocal   :: proc(L: ^State, ar: ^Debug, n: c.int) -> cstring ---
+	getupvalue :: proc(L: ^State, funcindex: c.int, n: c.int) -> cstring ---
+	setupvalue :: proc(L: ^State, funcindex: c.int, n: c.int) -> cstring ---
+
+	upvalueid   :: proc(L: ^State, fidx, n: c.int) -> rawptr ---
+	upvaluejoin :: proc(L: ^State, fidx1, n1, fidx2, n2: c.int) ---
+
+	sethook :: proc(L: ^State, func: Hook, mask: HookMask, count: c.int) ---
+	gethook :: proc(L: ^State) -> Hook ---
+	gethookmask  :: proc(L: ^State) -> HookMask ---
+	gethookcount :: proc(L: ^State) -> c.int ---
+
+	/* }============================================================== */
+}
+
+
+
+/* version suffix for environment variable names */
+VERSUFFIX :: "_" + VERSION_MAJOR + "_" + VERSION_MINOR
+
+COLIBNAME   :: "coroutine"
+TABLIBNAME  :: "table"
+IOLIBNAME   :: "io"
+OSLIBNAME   :: "os"
+STRLIBNAME  :: "string"
+UTF8LIBNAME :: "utf8"
+BITLIBNAME  :: "bit32"
+MATHLIBNAME :: "math"
+DBLIBNAME   :: "debug"
+LOADLIBNAME :: "package"
+
+@(link_prefix="lua")
+@(default_calling_convention="c")
+foreign lib {
+	open_base      :: proc(L: ^State) -> c.int ---
+	open_coroutine :: proc(L: ^State) -> c.int ---
+	open_table     :: proc(L: ^State) -> c.int ---
+	open_io        :: proc(L: ^State) -> c.int ---
+	open_os        :: proc(L: ^State) -> c.int ---
+	open_string    :: proc(L: ^State) -> c.int ---
+	open_utf8      :: proc(L: ^State) -> c.int ---
+	open_bit32     :: proc(L: ^State) -> c.int ---
+	open_math      :: proc(L: ^State) -> c.int ---
+	open_debug     :: proc(L: ^State) -> c.int ---
+	open_package   :: proc(L: ^State) -> c.int ---
+
+	/* open all previous libraries */
+
+	L_openlibs :: proc(L: ^State) ---
+}
+
+
+
+GNAME :: "_G"
+
+/* key, in the registry, for table of loaded modules */
+LOADED_TABLE :: "_LOADED"
+
+
+/* key, in the registry, for table of preloaded loaders */
+PRELOAD_TABLE :: "_PRELOAD"
+
+L_Reg :: struct {
+	name: cstring,
+  	func: CFunction,
+}
+
+L_NUMSIZES :: size_of(Integer)*16 + size_of(Number)
+
+
+/* predefined references */
+NOREF  :: -2
+REFNIL :: -1
+
+
+@(link_prefix="lua")
+@(default_calling_convention="c")
+foreign lib {
+	@(link_name="luaL_checkversion_")
+	L_checkversion :: proc(L: ^State, ver: Number = VERSION_NUM, sz: c.size_t = L_NUMSIZES) ---
+
+
+	L_getmetafield :: proc(L: ^State, obj: c.int, e: cstring) -> c.int ---
+	L_callmeta     :: proc(L: ^State, obj: c.int, e: cstring) -> c.int ---
+	@(link_name="luaL_tolstring")
+	L_tostring     :: proc(L: ^State, idx: c.int, len: ^c.size_t = nil) -> cstring ---
+	L_argerror     :: proc(L: ^State, arg: c.int, extramsg: cstring) -> c.int ---
+	@(link_name="luaL_checklstring")
+	L_checkstring  :: proc(L: ^State, arg: c.int, l: ^c.size_t = nil) -> cstring ---
+	@(link_name="luaL_optlstring")
+	L_optstring    :: proc(L: ^State, arg: c.int, def: cstring, l: ^c.size_t = nil) -> cstring ---
+	L_checknumber  :: proc(L: ^State, arg: c.int) -> Number ---
+	L_optnumber    :: proc(L: ^State, arg: c.int, def: Number) -> Number ---
+
+	L_checkinteger :: proc(L: ^State, arg: c.int) -> Integer ---
+	L_optinteger   :: proc(L: ^State, arg: c.int, def: Integer) -> Integer ---
+
+	L_checkstack :: proc(L: ^State, sz: c.int, msg: cstring) ---
+	L_checktype  :: proc(L: ^State, arg: c.int, t: c.int) ---
+	L_checkany   :: proc(L: ^State, arg: c.int) ---
+
+	L_newmetatable :: proc(L: ^State, tname: cstring) -> c.int ---
+	L_setmetatable :: proc(L: ^State, tname: cstring) ---
+	L_testudata    :: proc(L: ^State, ud: c.int, tname: cstring) -> rawptr ---
+	L_checkudata   :: proc(L: ^State, ud: c.int, tname: cstring) -> rawptr ---
+
+	L_where :: proc(L: ^State, lvl: c.int) ---
+	L_error :: proc(L: ^State, fmt: cstring, #c_vararg args: ..any) -> Status ---
+
+	L_checkoption :: proc(L: ^State, arg: c.int, def: cstring, lst: [^]cstring) -> c.int ---
+
+	L_fileresult :: proc(L: ^State, stat: c.int, fname: cstring) -> c.int ---
+	L_execresult :: proc(L: ^State, stat: c.int) -> c.int ---
+
+
+	L_ref   :: proc(L: ^State, t: c.int) -> c.int ---
+	L_unref :: proc(L: ^State, t: c.int, ref: c.int) ---
+
+	@(link_name="luaL_loadfilex")
+	L_loadfile :: proc (L: ^State, filename: cstring, mode: cstring = nil) -> Status ---
+
+	@(link_name="luaL_loadbufferx")
+	L_loadbuffer :: proc(L: ^State, buff: [^]byte, sz: c.size_t, name: cstring, mode: cstring = nil) -> Status ---
+	L_loadstring  :: proc(L: ^State, s: cstring) -> Status ---
+
+	L_newstate :: proc() -> ^State ---
+
+	L_len :: proc(L: ^State, idx: c.int) -> Integer ---
+
+	L_gsub :: proc(L: ^State, s, p, r: cstring) -> cstring ---
+
+	L_setfuncs :: proc(L: ^State, l: [^]L_Reg, nup: c.int) ---
+
+	L_getsubtable :: proc(L: ^State, idx: c.int, fname: cstring) -> c.int ---
+
+	L_traceback   :: proc(L: ^State, L1: ^State, msg: cstring, level: c.int) ---
+
+	L_requiref    :: proc(L: ^State, modname: cstring, openf: CFunction, glb: c.int) ---
+
+}
+/*
+** {======================================================
+** Generic Buffer manipulation
+** =======================================================
+*/
+
+
+L_Buffer :: struct {
+	b:    [^]byte,  /* buffer address */
+	size: c.size_t, /* buffer size */
+	n:    c.size_t, /* number of characters in buffer */
+	L:    ^State,
+	initb: [L_BUFFERSIZE]byte,  /* initial buffer */
+}
+
+L_addchar :: #force_inline proc "c" (B: ^L_Buffer, c: byte) {
+	if B.n < B.size {
+		L_prepbuffsize(B, 1)
+	}
+	B.b[B.n] = c
+	B.n += 1
+}
+
+L_addsize :: #force_inline proc "c" (B: ^L_Buffer, s: c.size_t) -> c.size_t {
+	B.n += s
+	return B.n
+}
+
+L_prepbuffer :: #force_inline proc "c" (B: ^L_Buffer) -> [^]byte {
+	return L_prepbuffsize(B, c.size_t(L_BUFFERSIZE))
+}
+
+
+@(link_prefix="lua")
+@(default_calling_convention="c")
+foreign lib {
+	L_buffinit       :: proc(L: ^State, B: ^L_Buffer) ---
+	L_prepbuffsize   :: proc(B: ^L_Buffer, sz: c.size_t) -> [^]byte ---
+	L_addlstring     :: proc(B: ^L_Buffer, s: cstring, l: c.size_t) ---
+	L_addstring      :: proc(B: ^L_Buffer, s: cstring) ---
+	L_addvalue       :: proc(B: ^L_Buffer) ---
+	L_pushresult     :: proc(B: ^L_Buffer) ---
+	L_pushresultsize :: proc(B: ^L_Buffer, sz: c.size_t) ---
+	L_buffinitsize   :: proc(L: ^State, B: ^L_Buffer, sz: c.size_t) -> [^]byte ---
+}
+
+
+/* }====================================================== */
+
+
+
+
+/*
+** {==============================================================
+** some useful macros
+** ===============================================================
+*/
+
+getextraspace :: #force_inline proc "c" (L: ^State) -> rawptr {
+	return rawptr(([^]byte)(L)[-EXTRASPACE:])
+}
+pop :: #force_inline proc "c" (L: ^State, n: c.int) {
+	settop(L, -n-1)
+}
+newtable :: #force_inline proc "c" (L: ^State) {
+	createtable(L, 0, 0)
+}
+register :: #force_inline proc "c" (L: ^State, n: cstring, f: CFunction) {
+	pushcfunction(L, f)
+	setglobal(L, n)
+}
+
+pushcfunction :: #force_inline proc "c" (L: ^State, f: CFunction) {
+	pushcclosure(L, f, 0)
+}
+
+
+isfunction      :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) == .FUNCTION      }
+istable         :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) == .TABLE         }
+islightuserdata :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) == .LIGHTUSERDATA }
+isnil           :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) == .NIL           }
+isboolean       :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) == .BOOLEAN       }
+isthread        :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) == .THREAD        }
+isnone          :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) == .NONE          }
+isnoneornil     :: #force_inline proc "c" (L: ^State, n: c.int) -> bool { return type(L, n) <= .NIL           }
+
+
+pushliteral :: pushstring
+pushglobaltable :: #force_inline proc "c" (L: ^State) {
+	rawgeti(L, REGISTRYINDEX, RIDX_GLOBALS)
+}
+tostring :: #force_inline proc "c" (L: ^State, i: c.int) -> cstring {
+	return tolstring(L, i, nil)
+}
+insert :: #force_inline proc "c" (L: ^State, idx: c.int) {
+	rotate(L, idx, 1)
+}
+remove :: #force_inline proc "c" (L: ^State, idx: c.int) {
+	rotate(L, idx, -1)
+	pop(L, 1)
+}
+replace :: #force_inline proc "c" (L: ^State, idx: c.int) {
+	copy(L, -1, idx)
+	pop(L, 1)
+}
+
+L_newlibtable :: #force_inline proc "c" (L: ^State, l: []L_Reg) {
+	createtable(L, 0, c.int(builtin.len(l) - 1))
+}
+
+L_newlib :: proc(L: ^State, l: []L_Reg) {
+	L_checkversion(L)
+	L_newlibtable(L, l)
+	L_setfuncs(L, raw_data(l), 0)
+}
+
+L_argcheck :: #force_inline proc "c" (L: ^State, cond: bool, arg: c.int, extramsg: cstring) {
+	if cond {
+		L_argerror(L, arg, extramsg)
+	}
+}
+
+L_typename :: #force_inline proc "c" (L: ^State, i: c.int) -> cstring {
+	return typename(L, type(L, i))
+}
+L_dofile :: #force_inline proc "c" (L: ^State, s: cstring) -> c.int {
+	err := L_loadfile(L, s)
+	return pcall(L, 0, MULTRET, 0) if err == nil else c.int(err)
+}
+L_dostring :: #force_inline proc "c" (L: ^State, s: cstring) -> c.int {
+	err := L_loadstring(L, s)
+	return pcall(L, 0, MULTRET, 0) if err == nil else c.int(err)
+}
+L_getmetatable :: #force_inline proc "c" (L: ^State, n: cstring) -> c.int {
+	return getfield(L, REGISTRYINDEX, n)
+}
+L_opt :: #force_inline proc "c" (L: ^State, f: $F, n: c.int, d: $T) -> T where intrinsics.type_is_proc(F) {
+	return d if isnoneornil(L, n) else f(L, n)
+}
+
+
+
+/* }============================================================== */
diff --git a/vendor/lua/5.3/windows/lua53.dll b/vendor/lua/5.3/windows/lua53.dll
new file mode 100644
index 000000000..fca1529ee
--- /dev/null
+++ b/vendor/lua/5.3/windows/lua53.dll
diff --git a/vendor/lua/5.3/windows/lua53dll.lib b/vendor/lua/5.3/windows/lua53dll.lib
new file mode 100644
index 000000000..5d204d37f
--- /dev/null
+++ b/vendor/lua/5.3/windows/lua53dll.lib