adjust some folder levels.

1 files changed, 0 insertions, 1455 deletions

diff --git a/src/lua/lapi.c b/src/lua/lapi.c
deleted file mode 100644
index f8f70cd..0000000
--- a/src/lua/lapi.c
+++ /dev/null
@@ -1,1455 +0,0 @@
-/*
-** $Id: lapi.c $
-** Lua API
-** See Copyright Notice in lua.h
-*/
-
-#define lapi_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
-
-#include <limits.h>
-#include <stdarg.h>
-#include <string.h>
-
-#include "lua.h"
-
-#include "lapi.h"
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-#include "lundump.h"
-#include "lvm.h"
-
-
-
-const char lua_ident[] =
-  "$LuaVersion: " LUA_COPYRIGHT " $"
-  "$LuaAuthors: " LUA_AUTHORS " $";
-
-
-
-/*
-** Test for a valid index (one that is not the 'nilvalue').
-** '!ttisnil(o)' implies 'o != &G(L)->nilvalue', so it is not needed.
-** However, it covers the most common cases in a faster way.
-*/
-#define isvalid(L, o)   (!ttisnil(o) || o != &G(L)->nilvalue)
-
-
-/* test for pseudo index */
-#define ispseudo(i)             ((i) <= LUA_REGISTRYINDEX)
-
-/* test for upvalue */
-#define isupvalue(i)            ((i) < LUA_REGISTRYINDEX)
-
-
-static TValue *index2value (lua_State *L, int idx) {
-  CallInfo *ci = L->ci;
-  if (idx > 0) {
-    StkId o = ci->func + idx;
-    api_check(L, idx <= L->ci->top - (ci->func + 1), "unacceptable index");
-    if (o >= L->top) return &G(L)->nilvalue;
-    else return s2v(o);
-  }
-  else if (!ispseudo(idx)) {  /* negative index */
-    api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index");
-    return s2v(L->top + idx);
-  }
-  else if (idx == LUA_REGISTRYINDEX)
-    return &G(L)->l_registry;
-  else {  /* upvalues */
-    idx = LUA_REGISTRYINDEX - idx;
-    api_check(L, idx <= MAXUPVAL + 1, "upvalue index too large");
-    if (ttislcf(s2v(ci->func)))  /* light C function? */
-      return &G(L)->nilvalue;  /* it has no upvalues */
-    else {
-      CClosure *func = clCvalue(s2v(ci->func));
-      return (idx <= func->nupvalues) ? &func->upvalue[idx-1]
-                                      : &G(L)->nilvalue;
-    }
-  }
-}
-
-
-static StkId index2stack (lua_State *L, int idx) {
-  CallInfo *ci = L->ci;
-  if (idx > 0) {
-    StkId o = ci->func + idx;
-    api_check(L, o < L->top, "unacceptable index");
-    return o;
-  }
-  else {    /* non-positive index */
-    api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index");
-    api_check(L, !ispseudo(idx), "invalid index");
-    return L->top + idx;
-  }
-}
-
-
-LUA_API int lua_checkstack (lua_State *L, int n) {
-  int res;
-  CallInfo *ci;
-  lua_lock(L);
-  ci = L->ci;
-  api_check(L, n >= 0, "negative 'n'");
-  if (L->stack_last - L->top > n)  /* stack large enough? */
-    res = 1;  /* yes; check is OK */
-  else {  /* no; need to grow stack */
-    int inuse = cast_int(L->top - L->stack) + EXTRA_STACK;
-    if (inuse > LUAI_MAXSTACK - n)  /* can grow without overflow? */
-      res = 0;  /* no */
-    else  /* try to grow stack */
-      res = luaD_growstack(L, n, 0);
-  }
-  if (res && ci->top < L->top + n)
-    ci->top = L->top + n;  /* adjust frame top */
-  lua_unlock(L);
-  return res;
-}
-
-
-LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) {
-  int i;
-  if (from == to) return;
-  lua_lock(to);
-  api_checknelems(from, n);
-  api_check(from, G(from) == G(to), "moving among independent states");
-  api_check(from, to->ci->top - to->top >= n, "stack overflow");
-  from->top -= n;
-  for (i = 0; i < n; i++) {
-    setobjs2s(to, to->top, from->top + i);
-    to->top++;  /* stack already checked by previous 'api_check' */
-  }
-  lua_unlock(to);
-}
-
-
-LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf) {
-  lua_CFunction old;
-  lua_lock(L);
-  old = G(L)->panic;
-  G(L)->panic = panicf;
-  lua_unlock(L);
-  return old;
-}
-
-
-LUA_API lua_Number lua_version (lua_State *L) {
-  UNUSED(L);
-  return LUA_VERSION_NUM;
-}
-
-
-
-/*
-** basic stack manipulation
-*/
-
-
-/*
-** convert an acceptable stack index into an absolute index
-*/
-LUA_API int lua_absindex (lua_State *L, int idx) {
-  return (idx > 0 || ispseudo(idx))
-         ? idx
-         : cast_int(L->top - L->ci->func) + idx;
-}
-
-
-LUA_API int lua_gettop (lua_State *L) {
-  return cast_int(L->top - (L->ci->func + 1));
-}
-
-
-LUA_API void lua_settop (lua_State *L, int idx) {
-  CallInfo *ci;
-  StkId func, newtop;
-  ptrdiff_t diff;  /* difference for new top */
-  lua_lock(L);
-  ci = L->ci;
-  func = ci->func;
-  if (idx >= 0) {
-    api_check(L, idx <= ci->top - (func + 1), "new top too large");
-    diff = ((func + 1) + idx) - L->top;
-    for (; diff > 0; diff--)
-      setnilvalue(s2v(L->top++));  /* clear new slots */
-  }
-  else {
-    api_check(L, -(idx+1) <= (L->top - (func + 1)), "invalid new top");
-    diff = idx + 1;  /* will "subtract" index (as it is negative) */
-  }
-  api_check(L, L->tbclist < L->top, "previous pop of an unclosed slot");
-  newtop = L->top + diff;
-  if (diff < 0 && L->tbclist >= newtop) {
-    lua_assert(hastocloseCfunc(ci->nresults));
-    luaF_close(L, newtop, CLOSEKTOP, 0);
-  }
-  L->top = newtop;  /* correct top only after closing any upvalue */
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_closeslot (lua_State *L, int idx) {
-  StkId level;
-  lua_lock(L);
-  level = index2stack(L, idx);
-  api_check(L, hastocloseCfunc(L->ci->nresults) && L->tbclist == level,
-     "no variable to close at given level");
-  luaF_close(L, level, CLOSEKTOP, 0);
-  level = index2stack(L, idx);  /* stack may be moved */
-  setnilvalue(s2v(level));
-  lua_unlock(L);
-}
-
-
-/*
-** Reverse the stack segment from 'from' to 'to'
-** (auxiliary to 'lua_rotate')
-** Note that we move(copy) only the value inside the stack.
-** (We do not move additional fields that may exist.)
-*/
-static void reverse (lua_State *L, StkId from, StkId to) {
-  for (; from < to; from++, to--) {
-    TValue temp;
-    setobj(L, &temp, s2v(from));
-    setobjs2s(L, from, to);
-    setobj2s(L, to, &temp);
-  }
-}
-
-
-/*
-** Let x = AB, where A is a prefix of length 'n'. Then,
-** rotate x n == BA. But BA == (A^r . B^r)^r.
-*/
-LUA_API void lua_rotate (lua_State *L, int idx, int n) {
-  StkId p, t, m;
-  lua_lock(L);
-  t = L->top - 1;  /* end of stack segment being rotated */
-  p = index2stack(L, idx);  /* start of segment */
-  api_check(L, (n >= 0 ? n : -n) <= (t - p + 1), "invalid 'n'");
-  m = (n >= 0 ? t - n : p - n - 1);  /* end of prefix */
-  reverse(L, p, m);  /* reverse the prefix with length 'n' */
-  reverse(L, m + 1, t);  /* reverse the suffix */
-  reverse(L, p, t);  /* reverse the entire segment */
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_copy (lua_State *L, int fromidx, int toidx) {
-  TValue *fr, *to;
-  lua_lock(L);
-  fr = index2value(L, fromidx);
-  to = index2value(L, toidx);
-  api_check(L, isvalid(L, to), "invalid index");
-  setobj(L, to, fr);
-  if (isupvalue(toidx))  /* function upvalue? */
-    luaC_barrier(L, clCvalue(s2v(L->ci->func)), fr);
-  /* LUA_REGISTRYINDEX does not need gc barrier
-     (collector revisits it before finishing collection) */
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_pushvalue (lua_State *L, int idx) {
-  lua_lock(L);
-  setobj2s(L, L->top, index2value(L, idx));
-  api_incr_top(L);
-  lua_unlock(L);
-}
-
-
-
-/*
-** access functions (stack -> C)
-*/
-
-
-LUA_API int lua_type (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return (isvalid(L, o) ? ttype(o) : LUA_TNONE);
-}
-
-
-LUA_API const char *lua_typename (lua_State *L, int t) {
-  UNUSED(L);
-  api_check(L, LUA_TNONE <= t && t < LUA_NUMTYPES, "invalid type");
-  return ttypename(t);
-}
-
-
-LUA_API int lua_iscfunction (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return (ttislcf(o) || (ttisCclosure(o)));
-}
-
-
-LUA_API int lua_isinteger (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return ttisinteger(o);
-}
-
-
-LUA_API int lua_isnumber (lua_State *L, int idx) {
-  lua_Number n;
-  const TValue *o = index2value(L, idx);
-  return tonumber(o, &n);
-}
-
-
-LUA_API int lua_isstring (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return (ttisstring(o) || cvt2str(o));
-}
-
-
-LUA_API int lua_isuserdata (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return (ttisfulluserdata(o) || ttislightuserdata(o));
-}
-
-
-LUA_API int lua_rawequal (lua_State *L, int index1, int index2) {
-  const TValue *o1 = index2value(L, index1);
-  const TValue *o2 = index2value(L, index2);
-  return (isvalid(L, o1) && isvalid(L, o2)) ? luaV_rawequalobj(o1, o2) : 0;
-}
-
-
-LUA_API void lua_arith (lua_State *L, int op) {
-  lua_lock(L);
-  if (op != LUA_OPUNM && op != LUA_OPBNOT)
-    api_checknelems(L, 2);  /* all other operations expect two operands */
-  else {  /* for unary operations, add fake 2nd operand */
-    api_checknelems(L, 1);
-    setobjs2s(L, L->top, L->top - 1);
-    api_incr_top(L);
-  }
-  /* first operand at top - 2, second at top - 1; result go to top - 2 */
-  luaO_arith(L, op, s2v(L->top - 2), s2v(L->top - 1), L->top - 2);
-  L->top--;  /* remove second operand */
-  lua_unlock(L);
-}
-
-
-LUA_API int lua_compare (lua_State *L, int index1, int index2, int op) {
-  const TValue *o1;
-  const TValue *o2;
-  int i = 0;
-  lua_lock(L);  /* may call tag method */
-  o1 = index2value(L, index1);
-  o2 = index2value(L, index2);
-  if (isvalid(L, o1) && isvalid(L, o2)) {
-    switch (op) {
-      case LUA_OPEQ: i = luaV_equalobj(L, o1, o2); break;
-      case LUA_OPLT: i = luaV_lessthan(L, o1, o2); break;
-      case LUA_OPLE: i = luaV_lessequal(L, o1, o2); break;
-      default: api_check(L, 0, "invalid option");
-    }
-  }
-  lua_unlock(L);
-  return i;
-}
-
-
-LUA_API size_t lua_stringtonumber (lua_State *L, const char *s) {
-  size_t sz = luaO_str2num(s, s2v(L->top));
-  if (sz != 0)
-    api_incr_top(L);
-  return sz;
-}
-
-
-LUA_API lua_Number lua_tonumberx (lua_State *L, int idx, int *pisnum) {
-  lua_Number n = 0;
-  const TValue *o = index2value(L, idx);
-  int isnum = tonumber(o, &n);
-  if (pisnum)
-    *pisnum = isnum;
-  return n;
-}
-
-
-LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *pisnum) {
-  lua_Integer res = 0;
-  const TValue *o = index2value(L, idx);
-  int isnum = tointeger(o, &res);
-  if (pisnum)
-    *pisnum = isnum;
-  return res;
-}
-
-
-LUA_API int lua_toboolean (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return !l_isfalse(o);
-}
-
-
-LUA_API const char *lua_tolstring (lua_State *L, int idx, size_t *len) {
-  TValue *o;
-  lua_lock(L);
-  o = index2value(L, idx);
-  if (!ttisstring(o)) {
-    if (!cvt2str(o)) {  /* not convertible? */
-      if (len != NULL) *len = 0;
-      lua_unlock(L);
-      return NULL;
-    }
-    luaO_tostring(L, o);
-    luaC_checkGC(L);
-    o = index2value(L, idx);  /* previous call may reallocate the stack */
-  }
-  if (len != NULL)
-    *len = vslen(o);
-  lua_unlock(L);
-  return svalue(o);
-}
-
-
-LUA_API lua_Unsigned lua_rawlen (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  switch (ttypetag(o)) {
-    case LUA_VSHRSTR: return tsvalue(o)->shrlen;
-    case LUA_VLNGSTR: return tsvalue(o)->u.lnglen;
-    case LUA_VUSERDATA: return uvalue(o)->len;
-    case LUA_VTABLE: return luaH_getn(hvalue(o));
-    default: return 0;
-  }
-}
-
-
-LUA_API lua_CFunction lua_tocfunction (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  if (ttislcf(o)) return fvalue(o);
-  else if (ttisCclosure(o))
-    return clCvalue(o)->f;
-  else return NULL;  /* not a C function */
-}
-
-
-static void *touserdata (const TValue *o) {
-  switch (ttype(o)) {
-    case LUA_TUSERDATA: return getudatamem(uvalue(o));
-    case LUA_TLIGHTUSERDATA: return pvalue(o);
-    default: return NULL;
-  }
-}
-
-
-LUA_API void *lua_touserdata (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return touserdata(o);
-}
-
-
-LUA_API lua_State *lua_tothread (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  return (!ttisthread(o)) ? NULL : thvalue(o);
-}
-
-
-/*
-** Returns a pointer to the internal representation of an object.
-** Note that ANSI C does not allow the conversion of a pointer to
-** function to a 'void*', so the conversion here goes through
-** a 'size_t'. (As the returned pointer is only informative, this
-** conversion should not be a problem.)
-*/
-LUA_API const void *lua_topointer (lua_State *L, int idx) {
-  const TValue *o = index2value(L, idx);
-  switch (ttypetag(o)) {
-    case LUA_VLCF: return cast_voidp(cast_sizet(fvalue(o)));
-    case LUA_VUSERDATA: case LUA_VLIGHTUSERDATA:
-      return touserdata(o);
-    default: {
-      if (iscollectable(o))
-        return gcvalue(o);
-      else
-        return NULL;
-    }
-  }
-}
-
-
-
-/*
-** push functions (C -> stack)
-*/
-
-
-LUA_API void lua_pushnil (lua_State *L) {
-  lua_lock(L);
-  setnilvalue(s2v(L->top));
-  api_incr_top(L);
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_pushnumber (lua_State *L, lua_Number n) {
-  lua_lock(L);
-  setfltvalue(s2v(L->top), n);
-  api_incr_top(L);
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_pushinteger (lua_State *L, lua_Integer n) {
-  lua_lock(L);
-  setivalue(s2v(L->top), n);
-  api_incr_top(L);
-  lua_unlock(L);
-}
-
-
-/*
-** Pushes on the stack a string with given length. Avoid using 's' when
-** 'len' == 0 (as 's' can be NULL in that case), due to later use of
-** 'memcmp' and 'memcpy'.
-*/
-LUA_API const char *lua_pushlstring (lua_State *L, const char *s, size_t len) {
-  TString *ts;
-  lua_lock(L);
-  ts = (len == 0) ? luaS_new(L, "") : luaS_newlstr(L, s, len);
-  setsvalue2s(L, L->top, ts);
-  api_incr_top(L);
-  luaC_checkGC(L);
-  lua_unlock(L);
-  return getstr(ts);
-}
-
-
-LUA_API const char *lua_pushstring (lua_State *L, const char *s) {
-  lua_lock(L);
-  if (s == NULL)
-    setnilvalue(s2v(L->top));
-  else {
-    TString *ts;
-    ts = luaS_new(L, s);
-    setsvalue2s(L, L->top, ts);
-    s = getstr(ts);  /* internal copy's address */
-  }
-  api_incr_top(L);
-  luaC_checkGC(L);
-  lua_unlock(L);
-  return s;
-}
-
-
-LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt,
-                                      va_list argp) {
-  const char *ret;
-  lua_lock(L);
-  ret = luaO_pushvfstring(L, fmt, argp);
-  luaC_checkGC(L);
-  lua_unlock(L);
-  return ret;
-}
-
-
-LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...) {
-  const char *ret;
-  va_list argp;
-  lua_lock(L);
-  va_start(argp, fmt);
-  ret = luaO_pushvfstring(L, fmt, argp);
-  va_end(argp);
-  luaC_checkGC(L);
-  lua_unlock(L);
-  return ret;
-}
-
-
-LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) {
-  lua_lock(L);
-  if (n == 0) {
-    setfvalue(s2v(L->top), fn);
-    api_incr_top(L);
-  }
-  else {
-    CClosure *cl;
-    api_checknelems(L, n);
-    api_check(L, n <= MAXUPVAL, "upvalue index too large");
-    cl = luaF_newCclosure(L, n);
-    cl->f = fn;
-    L->top -= n;
-    while (n--) {
-      setobj2n(L, &cl->upvalue[n], s2v(L->top + n));
-      /* does not need barrier because closure is white */
-      lua_assert(iswhite(cl));
-    }
-    setclCvalue(L, s2v(L->top), cl);
-    api_incr_top(L);
-    luaC_checkGC(L);
-  }
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_pushboolean (lua_State *L, int b) {
-  lua_lock(L);
-  if (b)
-    setbtvalue(s2v(L->top));
-  else
-    setbfvalue(s2v(L->top));
-  api_incr_top(L);
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_pushlightuserdata (lua_State *L, void *p) {
-  lua_lock(L);
-  setpvalue(s2v(L->top), p);
-  api_incr_top(L);
-  lua_unlock(L);
-}
-
-
-LUA_API int lua_pushthread (lua_State *L) {
-  lua_lock(L);
-  setthvalue(L, s2v(L->top), L);
-  api_incr_top(L);
-  lua_unlock(L);
-  return (G(L)->mainthread == L);
-}
-
-
-
-/*
-** get functions (Lua -> stack)
-*/
-
-
-static int auxgetstr (lua_State *L, const TValue *t, const char *k) {
-  const TValue *slot;
-  TString *str = luaS_new(L, k);
-  if (luaV_fastget(L, t, str, slot, luaH_getstr)) {
-    setobj2s(L, L->top, slot);
-    api_incr_top(L);
-  }
-  else {
-    setsvalue2s(L, L->top, str);
-    api_incr_top(L);
-    luaV_finishget(L, t, s2v(L->top - 1), L->top - 1, slot);
-  }
-  lua_unlock(L);
-  return ttype(s2v(L->top - 1));
-}
-
-
-/*
-** Get the global table in the registry. Since all predefined
-** indices in the registry were inserted right when the registry
-** was created and never removed, they must always be in the array
-** part of the registry.
-*/
-#define getGtable(L)  \
-        (&hvalue(&G(L)->l_registry)->array[LUA_RIDX_GLOBALS - 1])
-
-
-LUA_API int lua_getglobal (lua_State *L, const char *name) {
-  const TValue *G;
-  lua_lock(L);
-  G = getGtable(L);
-  return auxgetstr(L, G, name);
-}
-
-
-LUA_API int lua_gettable (lua_State *L, int idx) {
-  const TValue *slot;
-  TValue *t;
-  lua_lock(L);
-  t = index2value(L, idx);
-  if (luaV_fastget(L, t, s2v(L->top - 1), slot, luaH_get)) {
-    setobj2s(L, L->top - 1, slot);
-  }
-  else
-    luaV_finishget(L, t, s2v(L->top - 1), L->top - 1, slot);
-  lua_unlock(L);
-  return ttype(s2v(L->top - 1));
-}
-
-
-LUA_API int lua_getfield (lua_State *L, int idx, const char *k) {
-  lua_lock(L);
-  return auxgetstr(L, index2value(L, idx), k);
-}
-
-
-LUA_API int lua_geti (lua_State *L, int idx, lua_Integer n) {
-  TValue *t;
-  const TValue *slot;
-  lua_lock(L);
-  t = index2value(L, idx);
-  if (luaV_fastgeti(L, t, n, slot)) {
-    setobj2s(L, L->top, slot);
-  }
-  else {
-    TValue aux;
-    setivalue(&aux, n);
-    luaV_finishget(L, t, &aux, L->top, slot);
-  }
-  api_incr_top(L);
-  lua_unlock(L);
-  return ttype(s2v(L->top - 1));
-}
-
-
-static int finishrawget (lua_State *L, const TValue *val) {
-  if (isempty(val))  /* avoid copying empty items to the stack */
-    setnilvalue(s2v(L->top));
-  else
-    setobj2s(L, L->top, val);
-  api_incr_top(L);
-  lua_unlock(L);
-  return ttype(s2v(L->top - 1));
-}
-
-
-static Table *gettable (lua_State *L, int idx) {
-  TValue *t = index2value(L, idx);
-  api_check(L, ttistable(t), "table expected");
-  return hvalue(t);
-}
-
-
-LUA_API int lua_rawget (lua_State *L, int idx) {
-  Table *t;
-  const TValue *val;
-  lua_lock(L);
-  api_checknelems(L, 1);
-  t = gettable(L, idx);
-  val = luaH_get(t, s2v(L->top - 1));
-  L->top--;  /* remove key */
-  return finishrawget(L, val);
-}
-
-
-LUA_API int lua_rawgeti (lua_State *L, int idx, lua_Integer n) {
-  Table *t;
-  lua_lock(L);
-  t = gettable(L, idx);
-  return finishrawget(L, luaH_getint(t, n));
-}
-
-
-LUA_API int lua_rawgetp (lua_State *L, int idx, const void *p) {
-  Table *t;
-  TValue k;
-  lua_lock(L);
-  t = gettable(L, idx);
-  setpvalue(&k, cast_voidp(p));
-  return finishrawget(L, luaH_get(t, &k));
-}
-
-
-LUA_API void lua_createtable (lua_State *L, int narray, int nrec) {
-  Table *t;
-  lua_lock(L);
-  t = luaH_new(L);
-  sethvalue2s(L, L->top, t);
-  api_incr_top(L);
-  if (narray > 0 || nrec > 0)
-    luaH_resize(L, t, narray, nrec);
-  luaC_checkGC(L);
-  lua_unlock(L);
-}
-
-
-LUA_API int lua_getmetatable (lua_State *L, int objindex) {
-  const TValue *obj;
-  Table *mt;
-  int res = 0;
-  lua_lock(L);
-  obj = index2value(L, objindex);
-  switch (ttype(obj)) {
-    case LUA_TTABLE:
-      mt = hvalue(obj)->metatable;
-      break;
-    case LUA_TUSERDATA:
-      mt = uvalue(obj)->metatable;
-      break;
-    default:
-      mt = G(L)->mt[ttype(obj)];
-      break;
-  }
-  if (mt != NULL) {
-    sethvalue2s(L, L->top, mt);
-    api_incr_top(L);
-    res = 1;
-  }
-  lua_unlock(L);
-  return res;
-}
-
-
-LUA_API int lua_getiuservalue (lua_State *L, int idx, int n) {
-  TValue *o;
-  int t;
-  lua_lock(L);
-  o = index2value(L, idx);
-  api_check(L, ttisfulluserdata(o), "full userdata expected");
-  if (n <= 0 || n > uvalue(o)->nuvalue) {
-    setnilvalue(s2v(L->top));
-    t = LUA_TNONE;
-  }
-  else {
-    setobj2s(L, L->top, &uvalue(o)->uv[n - 1].uv);
-    t = ttype(s2v(L->top));
-  }
-  api_incr_top(L);
-  lua_unlock(L);
-  return t;
-}
-
-
-/*
-** set functions (stack -> Lua)
-*/
-
-/*
-** t[k] = value at the top of the stack (where 'k' is a string)
-*/
-static void auxsetstr (lua_State *L, const TValue *t, const char *k) {
-  const TValue *slot;
-  TString *str = luaS_new(L, k);
-  api_checknelems(L, 1);
-  if (luaV_fastget(L, t, str, slot, luaH_getstr)) {
-    luaV_finishfastset(L, t, slot, s2v(L->top - 1));
-    L->top--;  /* pop value */
-  }
-  else {
-    setsvalue2s(L, L->top, str);  /* push 'str' (to make it a TValue) */
-    api_incr_top(L);
-    luaV_finishset(L, t, s2v(L->top - 1), s2v(L->top - 2), slot);
-    L->top -= 2;  /* pop value and key */
-  }
-  lua_unlock(L);  /* lock done by caller */
-}
-
-
-LUA_API void lua_setglobal (lua_State *L, const char *name) {
-  const TValue *G;
-  lua_lock(L);  /* unlock done in 'auxsetstr' */
-  G = getGtable(L);
-  auxsetstr(L, G, name);
-}
-
-
-LUA_API void lua_settable (lua_State *L, int idx) {
-  TValue *t;
-  const TValue *slot;
-  lua_lock(L);
-  api_checknelems(L, 2);
-  t = index2value(L, idx);
-  if (luaV_fastget(L, t, s2v(L->top - 2), slot, luaH_get)) {
-    luaV_finishfastset(L, t, slot, s2v(L->top - 1));
-  }
-  else
-    luaV_finishset(L, t, s2v(L->top - 2), s2v(L->top - 1), slot);
-  L->top -= 2;  /* pop index and value */
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_setfield (lua_State *L, int idx, const char *k) {
-  lua_lock(L);  /* unlock done in 'auxsetstr' */
-  auxsetstr(L, index2value(L, idx), k);
-}
-
-
-LUA_API void lua_seti (lua_State *L, int idx, lua_Integer n) {
-  TValue *t;
-  const TValue *slot;
-  lua_lock(L);
-  api_checknelems(L, 1);
-  t = index2value(L, idx);
-  if (luaV_fastgeti(L, t, n, slot)) {
-    luaV_finishfastset(L, t, slot, s2v(L->top - 1));
-  }
-  else {
-    TValue aux;
-    setivalue(&aux, n);
-    luaV_finishset(L, t, &aux, s2v(L->top - 1), slot);
-  }
-  L->top--;  /* pop value */
-  lua_unlock(L);
-}
-
-
-static void aux_rawset (lua_State *L, int idx, TValue *key, int n) {
-  Table *t;
-  lua_lock(L);
-  api_checknelems(L, n);
-  t = gettable(L, idx);
-  luaH_set(L, t, key, s2v(L->top - 1));
-  invalidateTMcache(t);
-  luaC_barrierback(L, obj2gco(t), s2v(L->top - 1));
-  L->top -= n;
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_rawset (lua_State *L, int idx) {
-  aux_rawset(L, idx, s2v(L->top - 2), 2);
-}
-
-
-LUA_API void lua_rawsetp (lua_State *L, int idx, const void *p) {
-  TValue k;
-  setpvalue(&k, cast_voidp(p));
-  aux_rawset(L, idx, &k, 1);
-}
-
-
-LUA_API void lua_rawseti (lua_State *L, int idx, lua_Integer n) {
-  Table *t;
-  lua_lock(L);
-  api_checknelems(L, 1);
-  t = gettable(L, idx);
-  luaH_setint(L, t, n, s2v(L->top - 1));
-  luaC_barrierback(L, obj2gco(t), s2v(L->top - 1));
-  L->top--;
-  lua_unlock(L);
-}
-
-
-LUA_API int lua_setmetatable (lua_State *L, int objindex) {
-  TValue *obj;
-  Table *mt;
-  lua_lock(L);
-  api_checknelems(L, 1);
-  obj = index2value(L, objindex);
-  if (ttisnil(s2v(L->top - 1)))
-    mt = NULL;
-  else {
-    api_check(L, ttistable(s2v(L->top - 1)), "table expected");
-    mt = hvalue(s2v(L->top - 1));
-  }
-  switch (ttype(obj)) {
-    case LUA_TTABLE: {
-      hvalue(obj)->metatable = mt;
-      if (mt) {
-        luaC_objbarrier(L, gcvalue(obj), mt);
-        luaC_checkfinalizer(L, gcvalue(obj), mt);
-      }
-      break;
-    }
-    case LUA_TUSERDATA: {
-      uvalue(obj)->metatable = mt;
-      if (mt) {
-        luaC_objbarrier(L, uvalue(obj), mt);
-        luaC_checkfinalizer(L, gcvalue(obj), mt);
-      }
-      break;
-    }
-    default: {
-      G(L)->mt[ttype(obj)] = mt;
-      break;
-    }
-  }
-  L->top--;
-  lua_unlock(L);
-  return 1;
-}
-
-
-LUA_API int lua_setiuservalue (lua_State *L, int idx, int n) {
-  TValue *o;
-  int res;
-  lua_lock(L);
-  api_checknelems(L, 1);
-  o = index2value(L, idx);
-  api_check(L, ttisfulluserdata(o), "full userdata expected");
-  if (!(cast_uint(n) - 1u < cast_uint(uvalue(o)->nuvalue)))
-    res = 0;  /* 'n' not in [1, uvalue(o)->nuvalue] */
-  else {
-    setobj(L, &uvalue(o)->uv[n - 1].uv, s2v(L->top - 1));
-    luaC_barrierback(L, gcvalue(o), s2v(L->top - 1));
-    res = 1;
-  }
-  L->top--;
-  lua_unlock(L);
-  return res;
-}
-
-
-/*
-** 'load' and 'call' functions (run Lua code)
-*/
-
-
-#define checkresults(L,na,nr) \
-     api_check(L, (nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \
-        "results from function overflow current stack size")
-
-
-LUA_API void lua_callk (lua_State *L, int nargs, int nresults,
-                        lua_KContext ctx, lua_KFunction k) {
-  StkId func;
-  lua_lock(L);
-  api_check(L, k == NULL || !isLua(L->ci),
-    "cannot use continuations inside hooks");
-  api_checknelems(L, nargs+1);
-  api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread");
-  checkresults(L, nargs, nresults);
-  func = L->top - (nargs+1);
-  if (k != NULL && yieldable(L)) {  /* need to prepare continuation? */
-    L->ci->u.c.k = k;  /* save continuation */
-    L->ci->u.c.ctx = ctx;  /* save context */
-    luaD_call(L, func, nresults);  /* do the call */
-  }
-  else  /* no continuation or no yieldable */
-    luaD_callnoyield(L, func, nresults);  /* just do the call */
-  adjustresults(L, nresults);
-  lua_unlock(L);
-}
-
-
-
-/*
-** Execute a protected call.
-*/
-struct CallS {  /* data to 'f_call' */
-  StkId func;
-  int nresults;
-};
-
-
-static void f_call (lua_State *L, void *ud) {
-  struct CallS *c = cast(struct CallS *, ud);
-  luaD_callnoyield(L, c->func, c->nresults);
-}
-
-
-
-LUA_API int lua_pcallk (lua_State *L, int nargs, int nresults, int errfunc,
-                        lua_KContext ctx, lua_KFunction k) {
-  struct CallS c;
-  int status;
-  ptrdiff_t func;
-  lua_lock(L);
-  api_check(L, k == NULL || !isLua(L->ci),
-    "cannot use continuations inside hooks");
-  api_checknelems(L, nargs+1);
-  api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread");
-  checkresults(L, nargs, nresults);
-  if (errfunc == 0)
-    func = 0;
-  else {
-    StkId o = index2stack(L, errfunc);
-    api_check(L, ttisfunction(s2v(o)), "error handler must be a function");
-    func = savestack(L, o);
-  }
-  c.func = L->top - (nargs+1);  /* function to be called */
-  if (k == NULL || !yieldable(L)) {  /* no continuation or no yieldable? */
-    c.nresults = nresults;  /* do a 'conventional' protected call */
-    status = luaD_pcall(L, f_call, &c, savestack(L, c.func), func);
-  }
-  else {  /* prepare continuation (call is already protected by 'resume') */
-    CallInfo *ci = L->ci;
-    ci->u.c.k = k;  /* save continuation */
-    ci->u.c.ctx = ctx;  /* save context */
-    /* save information for error recovery */
-    ci->u2.funcidx = cast_int(savestack(L, c.func));
-    ci->u.c.old_errfunc = L->errfunc;
-    L->errfunc = func;
-    setoah(ci->callstatus, L->allowhook);  /* save value of 'allowhook' */
-    ci->callstatus |= CIST_YPCALL;  /* function can do error recovery */
-    luaD_call(L, c.func, nresults);  /* do the call */
-    ci->callstatus &= ~CIST_YPCALL;
-    L->errfunc = ci->u.c.old_errfunc;
-    status = LUA_OK;  /* if it is here, there were no errors */
-  }
-  adjustresults(L, nresults);
-  lua_unlock(L);
-  return status;
-}
-
-
-LUA_API int lua_load (lua_State *L, lua_Reader reader, void *data,
-                      const char *chunkname, const char *mode) {
-  ZIO z;
-  int status;
-  lua_lock(L);
-  if (!chunkname) chunkname = "?";
-  luaZ_init(L, &z, reader, data);
-  status = luaD_protectedparser(L, &z, chunkname, mode);
-  if (status == LUA_OK) {  /* no errors? */
-    LClosure *f = clLvalue(s2v(L->top - 1));  /* get newly created function */
-    if (f->nupvalues >= 1) {  /* does it have an upvalue? */
-      /* get global table from registry */
-      const TValue *gt = getGtable(L);
-      /* set global table as 1st upvalue of 'f' (may be LUA_ENV) */
-      setobj(L, f->upvals[0]->v, gt);
-      luaC_barrier(L, f->upvals[0], gt);
-    }
-  }
-  lua_unlock(L);
-  return status;
-}
-
-
-LUA_API int lua_dump (lua_State *L, lua_Writer writer, void *data, int strip) {
-  int status;
-  TValue *o;
-  lua_lock(L);
-  api_checknelems(L, 1);
-  o = s2v(L->top - 1);
-  if (isLfunction(o))
-    status = luaU_dump(L, getproto(o), writer, data, strip);
-  else
-    status = 1;
-  lua_unlock(L);
-  return status;
-}
-
-
-LUA_API int lua_status (lua_State *L) {
-  return L->status;
-}
-
-
-/*
-** Garbage-collection function
-*/
-LUA_API int lua_gc (lua_State *L, int what, ...) {
-  va_list argp;
-  int res = 0;
-  global_State *g;
-  lua_lock(L);
-  g = G(L);
-  va_start(argp, what);
-  switch (what) {
-    case LUA_GCSTOP: {
-      g->gcrunning = 0;
-      break;
-    }
-    case LUA_GCRESTART: {
-      luaE_setdebt(g, 0);
-      g->gcrunning = 1;
-      break;
-    }
-    case LUA_GCCOLLECT: {
-      luaC_fullgc(L, 0);
-      break;
-    }
-    case LUA_GCCOUNT: {
-      /* GC values are expressed in Kbytes: #bytes/2^10 */
-      res = cast_int(gettotalbytes(g) >> 10);
-      break;
-    }
-    case LUA_GCCOUNTB: {
-      res = cast_int(gettotalbytes(g) & 0x3ff);
-      break;
-    }
-    case LUA_GCSTEP: {
-      int data = va_arg(argp, int);
-      l_mem debt = 1;  /* =1 to signal that it did an actual step */
-      lu_byte oldrunning = g->gcrunning;
-      g->gcrunning = 1;  /* allow GC to run */
-      if (data == 0) {
-        luaE_setdebt(g, 0);  /* do a basic step */
-        luaC_step(L);
-      }
-      else {  /* add 'data' to total debt */
-        debt = cast(l_mem, data) * 1024 + g->GCdebt;
-        luaE_setdebt(g, debt);
-        luaC_checkGC(L);
-      }
-      g->gcrunning = oldrunning;  /* restore previous state */
-      if (debt > 0 && g->gcstate == GCSpause)  /* end of cycle? */
-        res = 1;  /* signal it */
-      break;
-    }
-    case LUA_GCSETPAUSE: {
-      int data = va_arg(argp, int);
-      res = getgcparam(g->gcpause);
-      setgcparam(g->gcpause, data);
-      break;
-    }
-    case LUA_GCSETSTEPMUL: {
-      int data = va_arg(argp, int);
-      res = getgcparam(g->gcstepmul);
-      setgcparam(g->gcstepmul, data);
-      break;
-    }
-    case LUA_GCISRUNNING: {
-      res = g->gcrunning;
-      break;
-    }
-    case LUA_GCGEN: {
-      int minormul = va_arg(argp, int);
-      int majormul = va_arg(argp, int);
-      res = isdecGCmodegen(g) ? LUA_GCGEN : LUA_GCINC;
-      if (minormul != 0)
-        g->genminormul = minormul;
-      if (majormul != 0)
-        setgcparam(g->genmajormul, majormul);
-      luaC_changemode(L, KGC_GEN);
-      break;
-    }
-    case LUA_GCINC: {
-      int pause = va_arg(argp, int);
-      int stepmul = va_arg(argp, int);
-      int stepsize = va_arg(argp, int);
-      res = isdecGCmodegen(g) ? LUA_GCGEN : LUA_GCINC;
-      if (pause != 0)
-        setgcparam(g->gcpause, pause);
-      if (stepmul != 0)
-        setgcparam(g->gcstepmul, stepmul);
-      if (stepsize != 0)
-        g->gcstepsize = stepsize;
-      luaC_changemode(L, KGC_INC);
-      break;
-    }
-    default: res = -1;  /* invalid option */
-  }
-  va_end(argp);
-  lua_unlock(L);
-  return res;
-}
-
-
-
-/*
-** miscellaneous functions
-*/
-
-
-LUA_API int lua_error (lua_State *L) {
-  TValue *errobj;
-  lua_lock(L);
-  errobj = s2v(L->top - 1);
-  api_checknelems(L, 1);
-  /* error object is the memory error message? */
-  if (ttisshrstring(errobj) && eqshrstr(tsvalue(errobj), G(L)->memerrmsg))
-    luaM_error(L);  /* raise a memory error */
-  else
-    luaG_errormsg(L);  /* raise a regular error */
-  /* code unreachable; will unlock when control actually leaves the kernel */
-  return 0;  /* to avoid warnings */
-}
-
-
-LUA_API int lua_next (lua_State *L, int idx) {
-  Table *t;
-  int more;
-  lua_lock(L);
-  api_checknelems(L, 1);
-  t = gettable(L, idx);
-  more = luaH_next(L, t, L->top - 1);
-  if (more) {
-    api_incr_top(L);
-  }
-  else  /* no more elements */
-    L->top -= 1;  /* remove key */
-  lua_unlock(L);
-  return more;
-}
-
-
-LUA_API void lua_toclose (lua_State *L, int idx) {
-  int nresults;
-  StkId o;
-  lua_lock(L);
-  o = index2stack(L, idx);
-  nresults = L->ci->nresults;
-  api_check(L, L->tbclist < o, "given index below or equal a marked one");
-  luaF_newtbcupval(L, o);  /* create new to-be-closed upvalue */
-  if (!hastocloseCfunc(nresults))  /* function not marked yet? */
-    L->ci->nresults = codeNresults(nresults);  /* mark it */
-  lua_assert(hastocloseCfunc(L->ci->nresults));
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_concat (lua_State *L, int n) {
-  lua_lock(L);
-  api_checknelems(L, n);
-  if (n > 0)
-    luaV_concat(L, n);
-  else {  /* nothing to concatenate */
-    setsvalue2s(L, L->top, luaS_newlstr(L, "", 0));  /* push empty string */
-    api_incr_top(L);
-  }
-  luaC_checkGC(L);
-  lua_unlock(L);
-}
-
-
-LUA_API void lua_len (lua_State *L, int idx) {
-  TValue *t;
-  lua_lock(L);
-  t = index2value(L, idx);
-  luaV_objlen(L, L->top, t);
-  api_incr_top(L);
-  lua_unlock(L);
-}
-
-
-LUA_API lua_Alloc lua_getallocf (lua_State *L, void **ud) {
-  lua_Alloc f;
-  lua_lock(L);
-  if (ud) *ud = G(L)->ud;
-  f = G(L)->frealloc;
-  lua_unlock(L);
-  return f;
-}
-
-
-LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud) {
-  lua_lock(L);
-  G(L)->ud = ud;
-  G(L)->frealloc = f;
-  lua_unlock(L);
-}
-
-
-void lua_setwarnf (lua_State *L, lua_WarnFunction f, void *ud) {
-  lua_lock(L);
-  G(L)->ud_warn = ud;
-  G(L)->warnf = f;
-  lua_unlock(L);
-}
-
-
-void lua_warning (lua_State *L, const char *msg, int tocont) {
-  lua_lock(L);
-  luaE_warning(L, msg, tocont);
-  lua_unlock(L);
-}
-
-
-
-LUA_API void *lua_newuserdatauv (lua_State *L, size_t size, int nuvalue) {
-  Udata *u;
-  lua_lock(L);
-  api_check(L, 0 <= nuvalue && nuvalue < USHRT_MAX, "invalid value");
-  u = luaS_newudata(L, size, nuvalue);
-  setuvalue(L, s2v(L->top), u);
-  api_incr_top(L);
-  luaC_checkGC(L);
-  lua_unlock(L);
-  return getudatamem(u);
-}
-
-
-
-static const char *aux_upvalue (TValue *fi, int n, TValue **val,
-                                GCObject **owner) {
-  switch (ttypetag(fi)) {
-    case LUA_VCCL: {  /* C closure */
-      CClosure *f = clCvalue(fi);
-      if (!(cast_uint(n) - 1u < cast_uint(f->nupvalues)))
-        return NULL;  /* 'n' not in [1, f->nupvalues] */
-      *val = &f->upvalue[n-1];
-      if (owner) *owner = obj2gco(f);
-      return "";
-    }
-    case LUA_VLCL: {  /* Lua closure */
-      LClosure *f = clLvalue(fi);
-      TString *name;
-      Proto *p = f->p;
-      if (!(cast_uint(n) - 1u  < cast_uint(p->sizeupvalues)))
-        return NULL;  /* 'n' not in [1, p->sizeupvalues] */
-      *val = f->upvals[n-1]->v;
-      if (owner) *owner = obj2gco(f->upvals[n - 1]);
-      name = p->upvalues[n-1].name;
-      return (name == NULL) ? "(no name)" : getstr(name);
-    }
-    default: return NULL;  /* not a closure */
-  }
-}
-
-
-LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n) {
-  const char *name;
-  TValue *val = NULL;  /* to avoid warnings */
-  lua_lock(L);
-  name = aux_upvalue(index2value(L, funcindex), n, &val, NULL);
-  if (name) {
-    setobj2s(L, L->top, val);
-    api_incr_top(L);
-  }
-  lua_unlock(L);
-  return name;
-}
-
-
-LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n) {
-  const char *name;
-  TValue *val = NULL;  /* to avoid warnings */
-  GCObject *owner = NULL;  /* to avoid warnings */
-  TValue *fi;
-  lua_lock(L);
-  fi = index2value(L, funcindex);
-  api_checknelems(L, 1);
-  name = aux_upvalue(fi, n, &val, &owner);
-  if (name) {
-    L->top--;
-    setobj(L, val, s2v(L->top));
-    luaC_barrier(L, owner, val);
-  }
-  lua_unlock(L);
-  return name;
-}
-
-
-static UpVal **getupvalref (lua_State *L, int fidx, int n, LClosure **pf) {
-  static const UpVal *const nullup = NULL;
-  LClosure *f;
-  TValue *fi = index2value(L, fidx);
-  api_check(L, ttisLclosure(fi), "Lua function expected");
-  f = clLvalue(fi);
-  if (pf) *pf = f;
-  if (1 <= n && n <= f->p->sizeupvalues)
-    return &f->upvals[n - 1];  /* get its upvalue pointer */
-  else
-    return (UpVal**)&nullup;
-}
-
-
-LUA_API void *lua_upvalueid (lua_State *L, int fidx, int n) {
-  TValue *fi = index2value(L, fidx);
-  switch (ttypetag(fi)) {
-    case LUA_VLCL: {  /* lua closure */
-      return *getupvalref(L, fidx, n, NULL);
-    }
-    case LUA_VCCL: {  /* C closure */
-      CClosure *f = clCvalue(fi);
-      if (1 <= n && n <= f->nupvalues)
-        return &f->upvalue[n - 1];
-      /* else */
-    }  /* FALLTHROUGH */
-    case LUA_VLCF:
-      return NULL;  /* light C functions have no upvalues */
-    default: {
-      api_check(L, 0, "function expected");
-      return NULL;
-    }
-  }
-}
-
-
-LUA_API void lua_upvaluejoin (lua_State *L, int fidx1, int n1,
-                                            int fidx2, int n2) {
-  LClosure *f1;
-  UpVal **up1 = getupvalref(L, fidx1, n1, &f1);
-  UpVal **up2 = getupvalref(L, fidx2, n2, NULL);
-  api_check(L, *up1 != NULL && *up2 != NULL, "invalid upvalue index");
-  *up1 = *up2;
-  luaC_objbarrier(L, f1, *up1);
-}
-
-