lapi.c File Reference

#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"

Go to the source code of this file.

Data Structures
struct	CallS

Macros
#define	lapi_c
#define	LUA_CORE
#define	isvalid(L, o)   (!ttisnil(o) || o != &G(L)->nilvalue)
#define	ispseudo(i)   ((i) <= LUA_REGISTRYINDEX)
#define	isupvalue(i)   ((i) < LUA_REGISTRYINDEX)
#define	getGtable(L)    (&hvalue(&G(L)->l_registry)->array[LUA_RIDX_GLOBALS - 1])
#define	checkresults(L, na, nr)

Functions
static TValue *	index2value (lua_State *L, int idx)
static StkId	index2stack (lua_State *L, int idx)
LUA_API int	lua_checkstack (lua_State *L, int n)
LUA_API void	lua_xmove (lua_State *from, lua_State *to, int n)
LUA_API lua_CFunction	lua_atpanic (lua_State *L, lua_CFunction panicf)
LUA_API lua_Number	lua_version (lua_State *L)
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_closeslot (lua_State *L, int idx)
static void	reverse (lua_State *L, StkId from, StkId to)
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 void	lua_pushvalue (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 t)
LUA_API int	lua_iscfunction (lua_State *L, int idx)
LUA_API int	lua_isinteger (lua_State *L, int idx)
LUA_API int	lua_isnumber (lua_State *L, int idx)
LUA_API int	lua_isstring (lua_State *L, int idx)
LUA_API int	lua_isuserdata (lua_State *L, int idx)
LUA_API int	lua_rawequal (lua_State *L, int index1, int index2)
LUA_API void	lua_arith (lua_State *L, int op)
LUA_API int	lua_compare (lua_State *L, int index1, int index2, int op)
LUA_API size_t	lua_stringtonumber (lua_State *L, const char *s)
LUA_API lua_Number	lua_tonumberx (lua_State *L, int idx, int *pisnum)
LUA_API lua_Integer	lua_tointegerx (lua_State *L, int idx, int *pisnum)
LUA_API int	lua_toboolean (lua_State *L, int idx)
LUA_API const char *	lua_tolstring (lua_State *L, int idx, size_t *len)
LUA_API lua_Unsigned	lua_rawlen (lua_State *L, int idx)
LUA_API lua_CFunction	lua_tocfunction (lua_State *L, int idx)
static void *	touserdata (const TValue *o)
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)
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)
static int	auxgetstr (lua_State *L, const TValue *t, const char *k)
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)
static int	finishrawget (lua_State *L, const TValue *val)
static Table *	gettable (lua_State *L, int idx)
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 narray, int nrec)
LUA_API int	lua_getmetatable (lua_State *L, int objindex)
LUA_API int	lua_getiuservalue (lua_State *L, int idx, int n)
static void	auxsetstr (lua_State *L, const TValue *t, const char *k)
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)
static void	aux_rawset (lua_State *L, int idx, TValue *key, int n)
LUA_API void	lua_rawset (lua_State *L, int idx)
LUA_API void	lua_rawsetp (lua_State *L, int idx, const void *p)
LUA_API void	lua_rawseti (lua_State *L, int idx, lua_Integer n)
LUA_API int	lua_setmetatable (lua_State *L, int objindex)
LUA_API int	lua_setiuservalue (lua_State *L, int idx, int n)
LUA_API void	lua_callk (lua_State *L, int nargs, int nresults, lua_KContext ctx, lua_KFunction k)
static void	f_call (lua_State *L, void *ud)
LUA_API int	lua_pcallk (lua_State *L, int nargs, int nresults, int errfunc, lua_KContext ctx, lua_KFunction k)
LUA_API int	lua_load (lua_State *L, lua_Reader reader, void *data, const char *chunkname, const char *mode)
LUA_API int	lua_dump (lua_State *L, lua_Writer writer, void *data, int strip)
LUA_API int	lua_status (lua_State *L)
LUA_API int	lua_gc (lua_State *L, int what,...)
LUA_API int	lua_error (lua_State *L)
LUA_API int	lua_next (lua_State *L, int idx)
LUA_API void	lua_toclose (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 lua_Alloc	lua_getallocf (lua_State *L, void **ud)
LUA_API void	lua_setallocf (lua_State *L, lua_Alloc f, void *ud)
void	lua_setwarnf (lua_State *L, lua_WarnFunction f, void *ud)
void	lua_warning (lua_State *L, const char *msg, int tocont)
LUA_API void *	lua_newuserdatauv (lua_State *L, size_t size, int nuvalue)
static const char *	aux_upvalue (TValue *fi, int n, TValue **val, GCObject **owner)
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)
static UpVal **	getupvalref (lua_State *L, int fidx, int n, LClosure **pf)
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)

Variables
const char	lua_ident []

Macro Definition Documentation

checkresults

#define checkresults	(		L,
			na,
			nr )

Value:

     api_check(L, (nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \
    "results from function overflow current stack size")

Definition at line 992 of file lua-5.4.3/src/lapi.c.

#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")

Referenced by lua_callk(), and lua_pcallk().

getGtable

#define getGtable

(

L

)

(&hvalue(&G(L)->l_registry)->array[LUA_RIDX_GLOBALS - 1])

Definition at line 656 of file lua-5.4.3/src/lapi.c.

#define getGtable(L)  \
    (&hvalue(&G(L)->l_registry)->array[LUA_RIDX_GLOBALS - 1])

Referenced by lua_getglobal(), lua_load(), and lua_setglobal().

ispseudo

#define ispseudo

(

i

)

((i) <= LUA_REGISTRYINDEX)

Definition at line 50 of file lua-5.4.3/src/lapi.c.

Referenced by index2stack(), index2value(), and lua_absindex().

isupvalue

#define isupvalue

(

i

)

((i) < LUA_REGISTRYINDEX)

Definition at line 53 of file lua-5.4.3/src/lapi.c.

Referenced by lua_copy().

isvalid

#define isvalid	(		L,
			o )   (!ttisnil(o) || o != &G(L)->nilvalue)

Definition at line 46 of file lua-5.4.3/src/lapi.c.

Referenced by lua_compare(), lua_copy(), lua_rawequal(), and lua_type().

lapi_c

#define lapi_c

Definition at line 7 of file lua-5.4.3/src/lapi.c.

LUA_CORE

#define LUA_CORE

Definition at line 8 of file lua-5.4.3/src/lapi.c.

Function Documentation

aux_rawset()

static void aux_rawset ( lua_State * L, int idx, TValue * key, int n )

static

Definition at line 890 of file lua-5.4.3/src/lapi.c.

                                                                   {
  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);
}

References api_checknelems, gettable(), invalidateTMcache, lua_lock, lua_unlock, luaC_barrierback, luaH_set(), obj2gco, s2v, and lua_State::top.

Referenced by lua_rawset(), and lua_rawsetp().

aux_upvalue()

static const char * aux_upvalue ( TValue * fi, int n, TValue ** val, GCObject ** owner )

static

Definition at line 1349 of file lua-5.4.3/src/lapi.c.

                                                  {
  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 */
  }
}

References cast_uint, clCvalue, clLvalue, getstr, LUA_VCCL, LUA_VLCL, name, NULL, obj2gco, owner, LClosure::p, Proto::sizeupvalues, ttypetag, LClosure::upvals, CClosure::upvalue, Proto::upvalues, and UpVal::v.

Referenced by lua_getupvalue(), and lua_setupvalue().

auxgetstr()

static int auxgetstr ( lua_State * L, const TValue * t, const char * k )

static

Definition at line 633 of file lua-5.4.3/src/lapi.c.

                                                                    {
  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));
}

References api_incr_top, lua_unlock, luaH_getstr(), luaS_new, luaV_fastget, luaV_finishget(), s2v, setobj2s, setsvalue2s, lua_State::top, and ttype.

Referenced by lua_getfield(), and lua_getglobal().

auxsetstr()

static void auxsetstr ( lua_State * L, const TValue * t, const char * k )

static

Definition at line 823 of file lua-5.4.3/src/lapi.c.

                                                                     {
  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 */
}

References api_checknelems, api_incr_top, lua_unlock, luaH_getstr(), luaS_new, luaV_fastget, luaV_finishfastset, luaV_finishset(), s2v, setsvalue2s, and lua_State::top.

Referenced by lua_setfield(), and lua_setglobal().

f_call()

static void f_call ( lua_State * L, void * ud )

static

Definition at line 1029 of file lua-5.4.3/src/lapi.c.

                                            {
  struct CallS *c = cast(struct CallS *, ud);
  luaD_callnoyield(L, c->func, c->nresults);
}

References cast, CallS::func, luaD_callnoyield(), and CallS::nresults.

Referenced by lua_pcallk().

finishrawget()

static int finishrawget ( lua_State * L, const TValue * val )

static

Definition at line 708 of file lua-5.4.3/src/lapi.c.

                                                          {
  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));
}

References api_incr_top, isempty, lua_unlock, s2v, setnilvalue, setobj2s, lua_State::top, and ttype.

Referenced by lua_rawget(), lua_rawgeti(), and lua_rawgetp().

gettable()

static Table * gettable ( lua_State * L, int idx )

static

Definition at line 719 of file lua-5.4.3/src/lapi.c.

                                               {
  TValue *t = index2value(L, idx);
  api_check(L, ttistable(t), "table expected");
  return hvalue(t);
}

References api_check, hvalue, index2value(), and ttistable.

Referenced by aux_rawset(), lua_next(), lua_rawget(), lua_rawgeti(), lua_rawgetp(), and lua_rawseti().

getupvalref()

static UpVal ** getupvalref ( lua_State * L, int fidx, int n, LClosure ** pf )

static

Definition at line 1409 of file lua-5.4.3/src/lapi.c.

                                                                          {
  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;
}

References api_check, clLvalue, index2value(), NULL, ttisLclosure, and LClosure::upvals.

Referenced by lua_upvalueid(), and lua_upvaluejoin().

index2stack()

static StkId index2stack ( lua_State * L, int idx )

static

Definition at line 84 of file lua-5.4.3/src/lapi.c.

                                                 {
  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;
  }
}

References api_check, lua_State::ci, CallInfo::func, ispseudo, and lua_State::top.

Referenced by lua_closeslot(), lua_pcallk(), lua_rotate(), and lua_toclose().

index2value()

static TValue * index2value ( lua_State * L, int idx )

static

Definition at line 56 of file lua-5.4.3/src/lapi.c.

                                                   {
  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;
    }
  }
}

References api_check, lua_State::ci, clCvalue, CallInfo::func, G, ispseudo, LUA_REGISTRYINDEX, MAXUPVAL, s2v, CallInfo::top, lua_State::top, ttislcf, and CClosure::upvalue.

Referenced by gettable(), getupvalref(), lua_compare(), lua_copy(), lua_getfield(), lua_geti(), lua_getiuservalue(), lua_getmetatable(), lua_gettable(), lua_getupvalue(), lua_iscfunction(), lua_isinteger(), lua_isnumber(), lua_isstring(), lua_isuserdata(), lua_len(), lua_pushvalue(), lua_rawequal(), lua_rawlen(), lua_setfield(), lua_seti(), lua_setiuservalue(), lua_setmetatable(), lua_settable(), lua_setupvalue(), lua_toboolean(), lua_tocfunction(), lua_tointegerx(), lua_tolstring(), lua_tonumberx(), lua_topointer(), lua_tothread(), lua_touserdata(), lua_type(), and lua_upvalueid().

lua_absindex()

LUA_API int lua_absindex	(	lua_State *	L,
		int	idx )

Definition at line 162 of file lua-5.4.3/src/lapi.c.

                                                 {
  return (idx > 0 || ispseudo(idx))
         ? idx
         : cast_int(L->top - L->ci->func) + idx;
}

References cast_int, lua_State::ci, CallInfo::func, ispseudo, and lua_State::top.

lua_arith()

LUA_API void lua_arith	(	lua_State *	L,
		int	op )

Definition at line 329 of file lua-5.4.3/src/lapi.c.

                                              {
  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);
}

References api_checknelems, api_incr_top, lua_lock, LUA_OPBNOT, LUA_OPUNM, lua_unlock, luaO_arith(), s2v, setobjs2s, and lua_State::top.

lua_atpanic()

LUA_API lua_CFunction lua_atpanic	(	lua_State *	L,
		lua_CFunction	panicf )

Definition at line 137 of file lua-5.4.3/src/lapi.c.

                                                                       {
  lua_CFunction old;
  lua_lock(L);
  old = G(L)->panic;
  G(L)->panic = panicf;
  lua_unlock(L);
  return old;
}

References G, lua_lock, and lua_unlock.

lua_callk()

LUA_API void lua_callk	(	lua_State *	L,
		int	nargs,
		int	nresults,
		lua_KContext	ctx,
		lua_KFunction	k )

Definition at line 997 of file lua-5.4.3/src/lapi.c.

                                                           {
  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);
}

References adjustresults, api_check, api_checknelems, CallInfo::c, checkresults, lua_State::ci, CallInfo::ctx, isLua, CallInfo::k, lua_lock, LUA_OK, lua_unlock, luaD_call(), luaD_callnoyield(), NULL, lua_State::status, lua_State::top, CallInfo::u, and yieldable.

lua_checkstack()

LUA_API int lua_checkstack	(	lua_State *	L,
		int	n )

Definition at line 99 of file lua-5.4.3/src/lapi.c.

                                                 {
  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;
}

References api_check, cast_int, lua_State::ci, EXTRA_STACK, lua_lock, lua_unlock, luaD_growstack(), LUAI_MAXSTACK, lua_State::stack, lua_State::stack_last, CallInfo::top, and lua_State::top.

lua_closeslot()

LUA_API void lua_closeslot	(	lua_State *	L,
		int	idx )

Definition at line 202 of file lua-5.4.3/src/lapi.c.

                                                   {
  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);
}

References api_check, lua_State::ci, CLOSEKTOP, hastocloseCfunc, index2stack(), lua_lock, lua_unlock, luaF_close(), CallInfo::nresults, s2v, setnilvalue, and lua_State::tbclist.

Referenced by luaL_pushresult().

lua_compare()

LUA_API int lua_compare	(	lua_State *	L,
		int	index1,
		int	index2,
		int	op )

Definition at line 345 of file lua-5.4.3/src/lapi.c.

                                                                       {
  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;
}

References api_check, index2value(), isvalid, lua_lock, LUA_OPEQ, LUA_OPLE, LUA_OPLT, lua_unlock, luaV_equalobj(), luaV_lessequal(), and luaV_lessthan().

lua_concat()

LUA_API void lua_concat	(	lua_State *	L,
		int	n )

Definition at line 1277 of file lua-5.4.3/src/lapi.c.

                                              {
  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);
}

References api_checknelems, api_incr_top, lua_lock, lua_unlock, luaC_checkGC, luaS_newlstr(), luaV_concat(), setsvalue2s, and lua_State::top.

lua_copy()

LUA_API void lua_copy	(	lua_State *	L,
		int	fromidx,
		int	toidx )

Definition at line 249 of file lua-5.4.3/src/lapi.c.

                                                             {
  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);
}

References api_check, lua_State::ci, clCvalue, CallInfo::func, index2value(), isupvalue, isvalid, lua_lock, lua_unlock, luaC_barrier, s2v, and setobj.

lua_createtable()

LUA_API void lua_createtable	(	lua_State *	L,
		int	narray,
		int	nrec )

Definition at line 756 of file lua-5.4.3/src/lapi.c.

                                                                  {
  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);
}

References api_incr_top, lua_lock, lua_unlock, luaC_checkGC, luaH_new(), luaH_resize(), sethvalue2s, and lua_State::top.

lua_dump()

LUA_API int lua_dump	(	lua_State *	L,
		lua_Writer	writer,
		void *	data,
		int	strip )

Definition at line 1103 of file lua-5.4.3/src/lapi.c.

                                                                              {
  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;
}

References api_checknelems, getproto, isLfunction, lua_lock, lua_unlock, luaU_dump(), s2v, lua_State::top, and writer().

lua_error()

LUA_API int lua_error

(

lua_State *

L

)

Definition at line 1230 of file lua-5.4.3/src/lapi.c.

                                     {
  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 */
}

References api_checknelems, eqshrstr, G, lua_lock, luaG_errormsg(), luaM_error, s2v, lua_State::top, tsvalue, and ttisshrstring.

lua_gc()

LUA_API int lua_gc	(	lua_State *	L,
		int	what,
			... )

Definition at line 1126 of file lua-5.4.3/src/lapi.c.

                                                 {
  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;
}

References cast, cast_int, G, global_State::GCdebt, global_State::gcpause, global_State::gcrunning, GCSpause, global_State::gcstate, global_State::gcstepmul, global_State::gcstepsize, global_State::genmajormul, global_State::genminormul, getgcparam, gettotalbytes, isdecGCmodegen, KGC_GEN, KGC_INC, LUA_GCCOLLECT, LUA_GCCOUNT, LUA_GCCOUNTB, LUA_GCGEN, LUA_GCINC, LUA_GCISRUNNING, LUA_GCRESTART, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL, LUA_GCSTEP, LUA_GCSTOP, lua_lock, lua_unlock, luaC_changemode(), luaC_checkGC, luaC_fullgc(), luaC_step(), luaE_setdebt(), and setgcparam.

lua_getallocf()

LUA_API lua_Alloc lua_getallocf	(	lua_State *	L,
		void **	ud )

Definition at line 1301 of file lua-5.4.3/src/lapi.c.

                                                          {
  lua_Alloc f;
  lua_lock(L);
  if (ud) *ud = G(L)->ud;
  f = G(L)->frealloc;
  lua_unlock(L);
  return f;
}

References G, lua_lock, and lua_unlock.

lua_getfield()

LUA_API int lua_getfield	(	lua_State *	L,
		int	idx,
		const char *	k )

Definition at line 683 of file lua-5.4.3/src/lapi.c.

                                                                {
  lua_lock(L);
  return auxgetstr(L, index2value(L, idx), k);
}

References auxgetstr(), index2value(), and lua_lock.

lua_getglobal()

LUA_API int lua_getglobal	(	lua_State *	L,
		const char *	name )

Definition at line 660 of file lua-5.4.3/src/lapi.c.

                                                           {
  const TValue *G;
  lua_lock(L);
  G = getGtable(L);
  return auxgetstr(L, G, name);
}

References auxgetstr(), G, getGtable, lua_lock, and name.

lua_geti()

LUA_API int lua_geti	(	lua_State *	L,
		int	idx,
		lua_Integer	n )

Definition at line 689 of file lua-5.4.3/src/lapi.c.

                                                            {
  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));
}

References api_incr_top, index2value(), lua_lock, lua_unlock, luaV_fastgeti, luaV_finishget(), s2v, setivalue, setobj2s, lua_State::top, and ttype.

lua_getiuservalue()

LUA_API int lua_getiuservalue	(	lua_State *	L,
		int	idx,
		int	n )

Definition at line 796 of file lua-5.4.3/src/lapi.c.

                                                             {
  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;
}

References api_check, api_incr_top, index2value(), lua_lock, LUA_TNONE, lua_unlock, s2v, setnilvalue, setobj2s, lua_State::top, ttisfulluserdata, ttype, and uvalue.

Referenced by db_getuservalue().

lua_getmetatable()

LUA_API int lua_getmetatable	(	lua_State *	L,
		int	objindex )

Definition at line 769 of file lua-5.4.3/src/lapi.c.

                                                          {
  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;
}

References api_incr_top, G, hvalue, index2value(), lua_lock, LUA_TTABLE, LUA_TUSERDATA, lua_unlock, Table::metatable, NULL, sethvalue2s, lua_State::top, ttype, and uvalue.

lua_gettable()

LUA_API int lua_gettable	(	lua_State *	L,
		int	idx )

Definition at line 668 of file lua-5.4.3/src/lapi.c.

                                                 {
  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));
}

References index2value(), lua_lock, lua_unlock, luaH_get(), luaV_fastget, luaV_finishget(), s2v, setobj2s, lua_State::top, and ttype.

lua_gettop()

LUA_API int lua_gettop

(

lua_State *

L

)

Definition at line 169 of file lua-5.4.3/src/lapi.c.

                                      {
  return cast_int(L->top - (L->ci->func + 1));
}

References cast_int, lua_State::ci, CallInfo::func, and lua_State::top.

lua_getupvalue()

LUA_API const char * lua_getupvalue	(	lua_State *	L,
		int	funcindex,
		int	n )

Definition at line 1376 of file lua-5.4.3/src/lapi.c.

                                                                        {
  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;
}

References api_incr_top, aux_upvalue(), index2value(), lua_lock, lua_unlock, name, NULL, setobj2s, and lua_State::top.

lua_iscfunction()

LUA_API int lua_iscfunction	(	lua_State *	L,
		int	idx )

Definition at line 291 of file lua-5.4.3/src/lapi.c.

                                                    {
  const TValue *o = index2value(L, idx);
  return (ttislcf(o) || (ttisCclosure(o)));
}

References index2value(), ttisCclosure, and ttislcf.

lua_isinteger()

LUA_API int lua_isinteger	(	lua_State *	L,
		int	idx )

Definition at line 297 of file lua-5.4.3/src/lapi.c.

                                                  {
  const TValue *o = index2value(L, idx);
  return ttisinteger(o);
}

References index2value(), and ttisinteger.

lua_isnumber()

LUA_API int lua_isnumber	(	lua_State *	L,
		int	idx )

Definition at line 303 of file lua-5.4.3/src/lapi.c.

                                                 {
  lua_Number n;
  const TValue *o = index2value(L, idx);
  return tonumber(o, &n);
}

References index2value(), and tonumber.

lua_isstring()

LUA_API int lua_isstring	(	lua_State *	L,
		int	idx )

Definition at line 310 of file lua-5.4.3/src/lapi.c.

                                                 {
  const TValue *o = index2value(L, idx);
  return (ttisstring(o) || cvt2str(o));
}

References cvt2str, index2value(), and ttisstring.

lua_isuserdata()

LUA_API int lua_isuserdata	(	lua_State *	L,
		int	idx )

Definition at line 316 of file lua-5.4.3/src/lapi.c.

                                                   {
  const TValue *o = index2value(L, idx);
  return (ttisfulluserdata(o) || ttislightuserdata(o));
}

References index2value(), ttisfulluserdata, and ttislightuserdata.

lua_len()

LUA_API void lua_len	(	lua_State *	L,
		int	idx )

Definition at line 1291 of file lua-5.4.3/src/lapi.c.

                                             {
  TValue *t;
  lua_lock(L);
  t = index2value(L, idx);
  luaV_objlen(L, L->top, t);
  api_incr_top(L);
  lua_unlock(L);
}

References api_incr_top, index2value(), lua_lock, lua_unlock, luaV_objlen(), and lua_State::top.

lua_load()

LUA_API int lua_load	(	lua_State *	L,
		lua_Reader	reader,
		void *	data,
		const char *	chunkname,
		const char *	mode )

Definition at line 1080 of file lua-5.4.3/src/lapi.c.

                                                               {
  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;
}

References clLvalue, getGtable, gt, lua_lock, LUA_OK, lua_unlock, luaC_barrier, luaD_protectedparser(), luaZ_init(), reader(), s2v, setobj, lua_State::top, LClosure::upvals, and UpVal::v.

lua_newuserdatauv()

LUA_API void * lua_newuserdatauv	(	lua_State *	L,
		size_t	size,
		int	nuvalue )

Definition at line 1335 of file lua-5.4.3/src/lapi.c.

                                                                         {
  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);
}

References api_check, api_incr_top, getudatamem, lua_lock, lua_unlock, luaC_checkGC, luaS_newudata(), s2v, setuvalue, and lua_State::top.

Referenced by gmatch(), newbox(), newprefile(), and setrandfunc().

lua_next()

LUA_API int lua_next	(	lua_State *	L,
		int	idx )

Definition at line 1245 of file lua-5.4.3/src/lapi.c.

                                             {
  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;
}

References api_checknelems, api_incr_top, gettable(), lua_lock, lua_unlock, luaH_next(), and lua_State::top.

lua_pcallk()

LUA_API int lua_pcallk	(	lua_State *	L,
		int	nargs,
		int	nresults,
		int	errfunc,
		lua_KContext	ctx,
		lua_KFunction	k )

Definition at line 1036 of file lua-5.4.3/src/lapi.c.

                                                           {
  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;
}

References adjustresults, lua_State::allowhook, api_check, api_checknelems, CallInfo::c, CallInfo::callstatus, cast_int, checkresults, lua_State::ci, CIST_YPCALL, CallInfo::ctx, lua_State::errfunc, f_call(), CallS::func, CallInfo::funcidx, index2stack(), isLua, CallInfo::k, lua_lock, LUA_OK, lua_unlock, luaD_call(), luaD_pcall(), CallS::nresults, NULL, CallInfo::old_errfunc, s2v, savestack, setoah, lua_State::status, lua_State::top, ttisfunction, CallInfo::u, CallInfo::u2, and yieldable.

lua_pushboolean()

LUA_API void lua_pushboolean	(	lua_State *	L,
		int	b )

Definition at line 599 of file lua-5.4.3/src/lapi.c.

                                                   {
  lua_lock(L);
  if (b)
    setbtvalue(s2v(L->top));
  else
    setbfvalue(s2v(L->top));
  api_incr_top(L);
  lua_unlock(L);
}

References api_incr_top, lua_lock, lua_unlock, s2v, setbfvalue, setbtvalue, and lua_State::top.

lua_pushcclosure()

LUA_API void lua_pushcclosure	(	lua_State *	L,
		lua_CFunction	fn,
		int	n )

Definition at line 573 of file lua-5.4.3/src/lapi.c.

                                                                      {
  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);
}

References api_check, api_checknelems, api_incr_top, CClosure::f, iswhite, lua_assert, lua_lock, lua_unlock, luaC_checkGC, luaF_newCclosure(), MAXUPVAL, s2v, setclCvalue, setfvalue, setobj2n, lua_State::top, and CClosure::upvalue.

lua_pushfstring()

LUA_API const char * lua_pushfstring	(	lua_State *	L,
		const char *	fmt,
			... )

Definition at line 560 of file lua-5.4.3/src/lapi.c.

                                                                         {
  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;
}

References lua_lock, lua_unlock, luaC_checkGC, and luaO_pushvfstring().

lua_pushinteger()

LUA_API void lua_pushinteger	(	lua_State *	L,
		lua_Integer	n )

Definition at line 507 of file lua-5.4.3/src/lapi.c.

                                                           {
  lua_lock(L);
  setivalue(s2v(L->top), n);
  api_incr_top(L);
  lua_unlock(L);
}

References api_incr_top, lua_lock, lua_unlock, s2v, setivalue, and lua_State::top.

lua_pushlightuserdata()

LUA_API void lua_pushlightuserdata	(	lua_State *	L,
		void *	p )

Definition at line 610 of file lua-5.4.3/src/lapi.c.

                                                           {
  lua_lock(L);
  setpvalue(s2v(L->top), p);
  api_incr_top(L);
  lua_unlock(L);
}

References api_incr_top, lua_lock, lua_unlock, s2v, setpvalue, and lua_State::top.

lua_pushlstring()

LUA_API const char * lua_pushlstring	(	lua_State *	L,
		const char *	s,
		size_t	len )

Definition at line 520 of file lua-5.4.3/src/lapi.c.

                                                                              {
  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);
}

References api_incr_top, getstr, lua_lock, lua_unlock, luaC_checkGC, luaS_new, luaS_newlstr(), s, setsvalue2s, and lua_State::top.

lua_pushnil()

LUA_API void lua_pushnil

(

lua_State *

L

)

Definition at line 491 of file lua-5.4.3/src/lapi.c.

                                        {
  lua_lock(L);
  setnilvalue(s2v(L->top));
  api_incr_top(L);
  lua_unlock(L);
}

References api_incr_top, lua_lock, lua_unlock, s2v, setnilvalue, and lua_State::top.

lua_pushnumber()

LUA_API void lua_pushnumber	(	lua_State *	L,
		lua_Number	n )

Definition at line 499 of file lua-5.4.3/src/lapi.c.

                                                         {
  lua_lock(L);
  setfltvalue(s2v(L->top), n);
  api_incr_top(L);
  lua_unlock(L);
}

References api_incr_top, lua_lock, lua_unlock, s2v, setfltvalue, and lua_State::top.

lua_pushstring()

LUA_API const char * lua_pushstring	(	lua_State *	L,
		const char *	s )

Definition at line 532 of file lua-5.4.3/src/lapi.c.

                                                                 {
  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;
}

References api_incr_top, getstr, lua_lock, lua_unlock, luaC_checkGC, luaS_new, NULL, s, s2v, setnilvalue, setsvalue2s, and lua_State::top.

lua_pushthread()

LUA_API int lua_pushthread

(

lua_State *

L

)

Definition at line 618 of file lua-5.4.3/src/lapi.c.

                                          {
  lua_lock(L);
  setthvalue(L, s2v(L->top), L);
  api_incr_top(L);
  lua_unlock(L);
  return (G(L)->mainthread == L);
}

References api_incr_top, G, lua_lock, lua_unlock, s2v, setthvalue, and lua_State::top.

lua_pushvalue()

LUA_API void lua_pushvalue	(	lua_State *	L,
		int	idx )

Definition at line 264 of file lua-5.4.3/src/lapi.c.

                                                   {
  lua_lock(L);
  setobj2s(L, L->top, index2value(L, idx));
  api_incr_top(L);
  lua_unlock(L);
}

References api_incr_top, index2value(), lua_lock, lua_unlock, setobj2s, and lua_State::top.

lua_pushvfstring()

LUA_API const char * lua_pushvfstring	(	lua_State *	L,
		const char *	fmt,
		va_list	argp )

Definition at line 549 of file lua-5.4.3/src/lapi.c.

                                                    {
  const char *ret;
  lua_lock(L);
  ret = luaO_pushvfstring(L, fmt, argp);
  luaC_checkGC(L);
  lua_unlock(L);
  return ret;
}

References lua_lock, lua_unlock, luaC_checkGC, and luaO_pushvfstring().

lua_rawequal()

LUA_API int lua_rawequal	(	lua_State *	L,
		int	index1,
		int	index2 )

Definition at line 322 of file lua-5.4.3/src/lapi.c.

                                                                {
  const TValue *o1 = index2value(L, index1);
  const TValue *o2 = index2value(L, index2);
  return (isvalid(L, o1) && isvalid(L, o2)) ? luaV_rawequalobj(o1, o2) : 0;
}

References index2value(), isvalid, and luaV_rawequalobj.

lua_rawget()

LUA_API int lua_rawget	(	lua_State *	L,
		int	idx )

Definition at line 726 of file lua-5.4.3/src/lapi.c.

                                               {
  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);
}

References api_checknelems, finishrawget(), gettable(), lua_lock, luaH_get(), s2v, and lua_State::top.

lua_rawgeti()

LUA_API int lua_rawgeti	(	lua_State *	L,
		int	idx,
		lua_Integer	n )

Definition at line 738 of file lua-5.4.3/src/lapi.c.

                                                               {
  Table *t;
  lua_lock(L);
  t = gettable(L, idx);
  return finishrawget(L, luaH_getint(t, n));
}

References finishrawget(), gettable(), lua_lock, and luaH_getint().

lua_rawgetp()

LUA_API int lua_rawgetp	(	lua_State *	L,
		int	idx,
		const void *	p )

Definition at line 746 of file lua-5.4.3/src/lapi.c.

                                                               {
  Table *t;
  TValue k;
  lua_lock(L);
  t = gettable(L, idx);
  setpvalue(&k, cast_voidp(p));
  return finishrawget(L, luaH_get(t, &k));
}

References cast_voidp, finishrawget(), gettable(), lua_lock, luaH_get(), and setpvalue.

lua_rawlen()

LUA_API lua_Unsigned lua_rawlen	(	lua_State *	L,
		int	idx )

Definition at line 420 of file lua-5.4.3/src/lapi.c.

                                                        {
  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;
  }
}

References hvalue, index2value(), LUA_VLNGSTR, LUA_VSHRSTR, LUA_VTABLE, LUA_VUSERDATA, luaH_getn(), tsvalue, ttypetag, and uvalue.

lua_rawset()

LUA_API void lua_rawset	(	lua_State *	L,
		int	idx )

Definition at line 903 of file lua-5.4.3/src/lapi.c.

                                                {
  aux_rawset(L, idx, s2v(L->top - 2), 2);
}

References aux_rawset(), s2v, and lua_State::top.

lua_rawseti()

LUA_API void lua_rawseti	(	lua_State *	L,
		int	idx,
		lua_Integer	n )

Definition at line 915 of file lua-5.4.3/src/lapi.c.

                                                                {
  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);
}

References api_checknelems, gettable(), lua_lock, lua_unlock, luaC_barrierback, luaH_setint(), obj2gco, s2v, and lua_State::top.

lua_rawsetp()

LUA_API void lua_rawsetp	(	lua_State *	L,
		int	idx,
		const void *	p )

Definition at line 908 of file lua-5.4.3/src/lapi.c.

                                                                {
  TValue k;
  setpvalue(&k, cast_voidp(p));
  aux_rawset(L, idx, &k, 1);
}

References aux_rawset(), cast_voidp, and setpvalue.

lua_rotate()

LUA_API void lua_rotate	(	lua_State *	L,
		int	idx,
		int	n )

Definition at line 235 of file lua-5.4.3/src/lapi.c.

                                                       {
  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);
}

References api_check, index2stack(), lua_lock, lua_unlock, reverse(), and lua_State::top.

lua_setallocf()

LUA_API void lua_setallocf	(	lua_State *	L,
		lua_Alloc	f,
		void *	ud )

Definition at line 1311 of file lua-5.4.3/src/lapi.c.

                                                                 {
  lua_lock(L);
  G(L)->ud = ud;
  G(L)->frealloc = f;
  lua_unlock(L);
}

References G, lua_lock, and lua_unlock.

lua_setfield()

LUA_API void lua_setfield	(	lua_State *	L,
		int	idx,
		const char *	k )

Definition at line 865 of file lua-5.4.3/src/lapi.c.

                                                                 {
  lua_lock(L);  /* unlock done in 'auxsetstr' */
  auxsetstr(L, index2value(L, idx), k);
}

References auxsetstr(), index2value(), and lua_lock.

lua_setglobal()

LUA_API void lua_setglobal	(	lua_State *	L,
		const char *	name )

Definition at line 841 of file lua-5.4.3/src/lapi.c.

                                                            {
  const TValue *G;
  lua_lock(L);  /* unlock done in 'auxsetstr' */
  G = getGtable(L);
  auxsetstr(L, G, name);
}

References auxsetstr(), G, getGtable, lua_lock, and name.

lua_seti()

LUA_API void lua_seti	(	lua_State *	L,
		int	idx,
		lua_Integer	n )

Definition at line 871 of file lua-5.4.3/src/lapi.c.

                                                             {
  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);
}

References api_checknelems, index2value(), lua_lock, lua_unlock, luaV_fastgeti, luaV_finishfastset, luaV_finishset(), s2v, setivalue, and lua_State::top.

lua_setiuservalue()

LUA_API int lua_setiuservalue	(	lua_State *	L,
		int	idx,
		int	n )

Definition at line 967 of file lua-5.4.3/src/lapi.c.

                                                             {
  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;
}

References api_check, api_checknelems, cast_uint, gcvalue, index2value(), lua_lock, lua_unlock, luaC_barrierback, s2v, setobj, lua_State::top, ttisfulluserdata, and uvalue.

Referenced by db_setuservalue().

lua_setmetatable()

LUA_API int lua_setmetatable	(	lua_State *	L,
		int	objindex )

Definition at line 927 of file lua-5.4.3/src/lapi.c.

                                                          {
  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;
}

References api_check, api_checknelems, G, gcvalue, hvalue, index2value(), lua_lock, LUA_TTABLE, LUA_TUSERDATA, lua_unlock, luaC_checkfinalizer(), luaC_objbarrier, NULL, s2v, lua_State::top, ttisnil, ttistable, ttype, and uvalue.

lua_settable()

LUA_API void lua_settable	(	lua_State *	L,
		int	idx )

Definition at line 849 of file lua-5.4.3/src/lapi.c.

                                                  {
  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);
}

References api_checknelems, index2value(), lua_lock, lua_unlock, luaH_get(), luaV_fastget, luaV_finishfastset, luaV_finishset(), s2v, and lua_State::top.

lua_settop()

LUA_API void lua_settop	(	lua_State *	L,
		int	idx )

Definition at line 174 of file lua-5.4.3/src/lapi.c.

                                                {
  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);
}

References api_check, lua_State::ci, CLOSEKTOP, CallInfo::func, hastocloseCfunc, lua_assert, lua_lock, lua_unlock, luaF_close(), CallInfo::nresults, s2v, setnilvalue, lua_State::tbclist, and lua_State::top.

lua_setupvalue()

LUA_API const char * lua_setupvalue	(	lua_State *	L,
		int	funcindex,
		int	n )

Definition at line 1390 of file lua-5.4.3/src/lapi.c.

                                                                        {
  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;
}

References api_checknelems, aux_upvalue(), index2value(), lua_lock, lua_unlock, luaC_barrier, name, NULL, owner, s2v, setobj, and lua_State::top.

lua_setwarnf()

void lua_setwarnf	(	lua_State *	L,
		lua_WarnFunction	f,
		void *	ud )

Definition at line 1319 of file lua-5.4.3/src/lapi.c.

                                                               {
  lua_lock(L);
  G(L)->ud_warn = ud;
  G(L)->warnf = f;
  lua_unlock(L);
}

References G, lua_lock, and lua_unlock.

Referenced by checkcontrol(), luaL_newstate(), and warnfcont().

lua_status()

LUA_API int lua_status

(

lua_State *

L

)

Definition at line 1118 of file lua-5.4.3/src/lapi.c.

                                      {
  return L->status;
}

References lua_State::status.

lua_stringtonumber()

LUA_API size_t lua_stringtonumber	(	lua_State *	L,
		const char *	s )

Definition at line 365 of file lua-5.4.3/src/lapi.c.

                                                                {
  size_t sz = luaO_str2num(s, s2v(L->top));
  if (sz != 0)
    api_incr_top(L);
  return sz;
}

References api_incr_top, luaO_str2num(), s, s2v, and lua_State::top.

lua_toboolean()

LUA_API int lua_toboolean	(	lua_State *	L,
		int	idx )

Definition at line 393 of file lua-5.4.3/src/lapi.c.

                                                  {
  const TValue *o = index2value(L, idx);
  return !l_isfalse(o);
}

References index2value(), and l_isfalse.

lua_tocfunction()

LUA_API lua_CFunction lua_tocfunction	(	lua_State *	L,
		int	idx )

Definition at line 432 of file lua-5.4.3/src/lapi.c.

                                                              {
  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 */
}

References clCvalue, fvalue, index2value(), NULL, ttisCclosure, and ttislcf.

lua_toclose()

LUA_API void lua_toclose	(	lua_State *	L,
		int	idx )

Definition at line 1262 of file lua-5.4.3/src/lapi.c.

                                                 {
  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);
}

References api_check, lua_State::ci, codeNresults, hastocloseCfunc, index2stack(), lua_assert, lua_lock, lua_unlock, luaF_newtbcupval(), CallS::nresults, CallInfo::nresults, and lua_State::tbclist.

Referenced by prepbuffsize().

lua_tointegerx()

LUA_API lua_Integer lua_tointegerx	(	lua_State *	L,
		int	idx,
		int *	pisnum )

Definition at line 383 of file lua-5.4.3/src/lapi.c.

                                                                        {
  lua_Integer res = 0;
  const TValue *o = index2value(L, idx);
  int isnum = tointeger(o, &res);
  if (pisnum)
    *pisnum = isnum;
  return res;
}

References index2value(), and tointeger.

lua_tolstring()

LUA_API const char * lua_tolstring	(	lua_State *	L,
		int	idx,
		size_t *	len )

Definition at line 399 of file lua-5.4.3/src/lapi.c.

                                                                       {
  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);
}

References cvt2str, index2value(), lua_lock, lua_unlock, luaC_checkGC, luaO_tostring(), NULL, svalue, ttisstring, and vslen.

lua_tonumberx()

LUA_API lua_Number lua_tonumberx	(	lua_State *	L,
		int	idx,
		int *	pisnum )

Definition at line 373 of file lua-5.4.3/src/lapi.c.

                                                                      {
  lua_Number n = 0;
  const TValue *o = index2value(L, idx);
  int isnum = tonumber(o, &n);
  if (pisnum)
    *pisnum = isnum;
  return n;
}

References index2value(), and tonumber.

lua_topointer()

LUA_API const void * lua_topointer	(	lua_State *	L,
		int	idx )

Definition at line 469 of file lua-5.4.3/src/lapi.c.

                                                          {
  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;
    }
  }
}

References cast_sizet, cast_voidp, fvalue, gcvalue, index2value(), iscollectable, LUA_VLCF, LUA_VLIGHTUSERDATA, LUA_VUSERDATA, NULL, touserdata(), and ttypetag.

lua_tothread()

LUA_API lua_State * lua_tothread	(	lua_State *	L,
		int	idx )

Definition at line 456 of file lua-5.4.3/src/lapi.c.

                                                        {
  const TValue *o = index2value(L, idx);
  return (!ttisthread(o)) ? NULL : thvalue(o);
}

References index2value(), NULL, thvalue, and ttisthread.

lua_touserdata()

LUA_API void * lua_touserdata	(	lua_State *	L,
		int	idx )

Definition at line 450 of file lua-5.4.3/src/lapi.c.

                                                     {
  const TValue *o = index2value(L, idx);
  return touserdata(o);
}

References index2value(), and touserdata().

lua_type()

LUA_API int lua_type	(	lua_State *	L,
		int	idx )

Definition at line 278 of file lua-5.4.3/src/lapi.c.

                                             {
  const TValue *o = index2value(L, idx);
  return (isvalid(L, o) ? ttype(o) : LUA_TNONE);
}

References index2value(), isvalid, LUA_TNONE, and ttype.

lua_typename()

LUA_API const char * lua_typename	(	lua_State *	L,
		int	t )

Definition at line 284 of file lua-5.4.3/src/lapi.c.

                                                       {
  UNUSED(L);
  api_check(L, LUA_TNONE <= t && t < LUA_NUMTYPES, "invalid type");
  return ttypename(t);
}

References api_check, LUA_NUMTYPES, LUA_TNONE, ttypename, and UNUSED.

lua_upvalueid()

LUA_API void * lua_upvalueid	(	lua_State *	L,
		int	fidx,
		int	n )

Definition at line 1423 of file lua-5.4.3/src/lapi.c.

                                                            {
  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;
    }
  }
}

References api_check, clCvalue, getupvalref(), index2value(), LUA_VCCL, LUA_VLCF, LUA_VLCL, NULL, ttypetag, and CClosure::upvalue.

lua_upvaluejoin()

LUA_API void lua_upvaluejoin	(	lua_State *	L,
		int	fidx1,
		int	n1,
		int	fidx2,
		int	n2 )

Definition at line 1445 of file lua-5.4.3/src/lapi.c.

                                                               {
  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);
}

References api_check, getupvalref(), luaC_objbarrier, and NULL.

lua_version()

LUA_API lua_Number lua_version

(

lua_State *

L

)

Definition at line 147 of file lua-5.4.3/src/lapi.c.

                                              {
  UNUSED(L);
  return LUA_VERSION_NUM;
}

References LUA_VERSION_NUM, and UNUSED.

lua_warning()

void lua_warning	(	lua_State *	L,
		const char *	msg,
		int	tocont )

Definition at line 1327 of file lua-5.4.3/src/lapi.c.

                                                             {
  lua_lock(L);
  luaE_warning(L, msg, tocont);
  lua_unlock(L);
}

References lua_lock, lua_unlock, and luaE_warning().

Referenced by luaB_warn(), and runargs().

lua_xmove()

LUA_API void lua_xmove	(	lua_State *	from,
		lua_State *	to,
		int	n )

Definition at line 121 of file lua-5.4.3/src/lapi.c.

                                                               {
  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);
}

References api_check, api_checknelems, lua_State::ci, G, lua_lock, lua_unlock, setobjs2s, CallInfo::top, and lua_State::top.

reverse()

static void reverse ( lua_State * L, StkId from, StkId to )

static

Definition at line 221 of file lua-5.4.3/src/lapi.c.

                                                         {
  for (; from < to; from++, to--) {
    TValue temp;
    setobj(L, &temp, s2v(from));
    setobjs2s(L, from, to);
    setobj2s(L, to, &temp);
  }
}

References s2v, setobj, setobj2s, and setobjs2s.

Referenced by lua_rotate().

touserdata()

static void * touserdata ( const TValue * o )

static

Definition at line 441 of file lua-5.4.3/src/lapi.c.

                                          {
  switch (ttype(o)) {
    case LUA_TUSERDATA: return getudatamem(uvalue(o));
    case LUA_TLIGHTUSERDATA: return pvalue(o);
    default: return NULL;
  }
}

References getudatamem, LUA_TLIGHTUSERDATA, LUA_TUSERDATA, NULL, pvalue, ttype, and uvalue.

Referenced by lua_topointer(), and lua_touserdata().

Variable Documentation

lua_ident

const char lua_ident[]

Initial value:

=
  "$LuaVersion: " LUA_COPYRIGHT " $"
  "$LuaAuthors: " LUA_AUTHORS " $"

Definition at line 35 of file lua-5.4.3/src/lapi.c.