# lua/ltable.c File Reference

`#include <math.h>`
`#include <string.h>`
`#include "lua.h"`
`#include "ldebug.h"`
`#include "ldo.h"`
`#include "lgc.h"`
`#include "lmem.h"`
`#include "lobject.h"`
`#include "lstate.h"`
`#include "ltable.h"`

Include dependency graph for ltable.c:

Go to the source code of this file.

## Defines
#define | ltable_c
#define | LUA_CORE
#define | MAXBITS (LUAI_BITSINT-2)
#define | MAXASIZE (1 << MAXBITS)
#define | hashpow2(t, n) (gnode(t, lmod((n), sizenode(t))))
#define | hashstr(t, str) hashpow2(t, (str)->tsv.hash)
#define | hashboolean(t, p) hashpow2(t, p)
#define | hashmod(t, n) (gnode(t, ((n) % ((sizenode(t)-1)|1))))
#define | hashpointer(t, p) hashmod(t, IntPoint(p))
#define | numints cast_int(sizeof(lua_Number)/sizeof(int))
#define | dummynode (&dummynode_)
## Functions
static Node * | hashnum (const Table *t, lua_Number n)
static Node * | mainposition (const Table *t, const TValue *key)
static int | arrayindex (const TValue *key)
static int | findindex (lua_State *L, Table *t, StkId key)
int | luaH_next (lua_State *L, Table *t, StkId key)
static int | computesizes (int nums[], int *narray)
static int | countint (const TValue *key, int *nums)
static int | numusearray (const Table *t, int *nums)
static int | numusehash (const Table *t, int *nums, int *pnasize)
static void | setarrayvector (lua_State *L, Table *t, int size)
static void | setnodevector (lua_State *L, Table *t, int size)
static void | resize (lua_State *L, Table *t, int nasize, int nhsize)
void | luaH_resizearray (lua_State *L, Table *t, int nasize)
static void | rehash (lua_State *L, Table *t, const TValue *ek)
Table * | luaH_new (lua_State *L, int narray, int nhash)
void | luaH_free (lua_State *L, Table *t)
static Node * | getfreepos (Table *t)
static TValue * | newkey (lua_State *L, Table *t, const TValue *key)
const TValue * | luaH_getnum (Table *t, int key)
const TValue * | luaH_getstr (Table *t, TString *key)
const TValue * | luaH_get (Table *t, const TValue *key)
TValue * | luaH_set (lua_State *L, Table *t, const TValue *key)
TValue * | luaH_setnum (lua_State *L, Table *t, int key)
TValue * | luaH_setstr (lua_State *L, Table *t, TString *key)
static int | unbound_search (Table *t, unsigned int j)
int | luaH_getn (Table *t)
## Variables
static const Node | dummynode_

## Define Documentation

#define dummynode (&dummynode_)

Definition at line 73 of file ltable.c.

Referenced by luaH_free(), luaH_getn(), luaH_new(), luaH_resizearray(), newkey(), resize(), and setnodevector().

#define hashboolean | ( | t,
|  | p |  | ) | hashpow2(t, p)

Definition at line 53 of file ltable.c.

Referenced by mainposition().

#define hashmod | ( | t,
|  | n |  | ) | (gnode(t, ((n) % ((sizenode(t)-1)|1))))

Definition at line 60 of file ltable.c.

Referenced by hashnum().

#define hashpointer | ( | t,
|  | p |  | ) | hashmod(t, IntPoint(p))

Definition at line 63 of file ltable.c.

Referenced by mainposition().

#define hashpow2 | ( | t,
|  | n |  | ) | (gnode(t, lmod((n), sizenode(t))))

Definition at line 50 of file ltable.c.

#define hashstr | ( | t,
|  | str |  | ) | hashpow2(t, (str)->tsv.hash)

Definition at line 52 of file ltable.c.

Referenced by luaH_getstr(), and mainposition().

#define ltable_c

Definition at line 24 of file ltable.c.

#define LUA_CORE

Definition at line 25 of file ltable.c.

#define MAXASIZE (1 << MAXBITS)

Definition at line 47 of file ltable.c.

Referenced by countint().

#define MAXBITS (LUAI_BITSINT-2)

Definition at line 44 of file ltable.c.

Referenced by numusearray(), rehash(), and setnodevector().

#define numints cast_int(sizeof(lua_Number)/sizeof(int))

Definition at line 69 of file ltable.c.

Referenced by hashnum().

## Function Documentation

static int arrayindex | ( | const TValue * | key | ) | `[static]`

Definition at line 120 of file ltable.c.

References cast_num, nvalue, and ttisnumber.

Referenced by countint(), and findindex().

static int computesizes | ( | int | nums[],
|  | int * | narray |
| ) |  |  | `[static]`

Definition at line 189 of file ltable.c.

References lua_assert.

Referenced by rehash().

static int countint | ( | const TValue * | key,
|  | int * | nums |
| ) |  |  | `[static]`

Definition at line 211 of file ltable.c.

References arrayindex(), ceillog2, and MAXASIZE.

Referenced by numusehash(), and rehash().

static int findindex | ( | lua_State * | L,
|  | Table * | t,
|  | StkId | key |
| ) |  |  | `[static]`

Definition at line 137 of file ltable.c.

References arrayindex(), cast_int, gcvalue, gkey, gnext, gnode, iscollectable, key2tval, LUA_TDEADKEY, luaG_runerror(), luaO_rawequalObj(), mainposition(), Table::sizearray, ttisnil, and ttype.

Referenced by luaH_next().

static Node* getfreepos | ( | Table * | t | ) | `[static]`

Definition at line 382 of file ltable.c.

References gkey, Table::lastfree, Table::node, and ttisnil.

Referenced by newkey().

static Node* hashnum | ( | const Table * | t,
|  | lua_Number | n |
| ) |  |  | `[static]`

Definition at line 84 of file ltable.c.

References gnode, hashmod, and numints.

Referenced by luaH_getnum(), and mainposition().

void luaH_free | ( | lua_State * | L,
|  | Table * | t |
| ) |  |  |

Definition at line 374 of file ltable.c.

References Table::array, dummynode, luaM_free, luaM_freearray, Table::node, Table::sizearray, and sizenode.

Referenced by freeobj().

const TValue* luaH_get | ( | Table * | t,
|  | const TValue * | key |
| ) |  |  |

Definition at line 469 of file ltable.c.

References cast_num, gnext, gval, key2tval, luaH_getnum(), luaH_getstr(), luaO_nilobject, luaO_rawequalObj(), mainposition(), nvalue, rawtsvalue, and ttype.

Referenced by lua_rawget(), luaH_set(), and luaV_gettable().

int luaH_getn | ( | Table * | t | ) |

Definition at line 560 of file ltable.c.

References Table::array, dummynode, Table::node, Table::sizearray, ttisnil, and unbound_search().

Referenced by lua_objlen(), and luaV_execute().

const TValue* luaH_getnum | ( | Table * | t,
|  | int | key |
| ) |  |  |

Definition at line 435 of file ltable.c.

References Table::array, cast, cast_num, gkey, gnext, gval, hashnum(), luaO_nilobject, nvalue, Table::sizearray, and ttisnumber.

Referenced by lua_rawgeti(), luaH_get(), luaH_setnum(), and unbound_search().

const TValue* luaH_getstr | ( | Table * | t,
|  | TString * | key |
| ) |  |  |

Definition at line 455 of file ltable.c.

References gkey, gnext, gval, hashstr, luaO_nilobject, rawtsvalue, and ttisstring.

Referenced by luaH_get(), luaH_setstr(), luaT_gettm(), and luaT_gettmbyobj().

Table* luaH_new | ( | lua_State * | L,
|  | int | narray,
|  | int | nhash |
| ) |  |  |

Definition at line 358 of file ltable.c.

References Table::array, cast, cast_byte, dummynode, Table::flags, Table::lsizenode, luaC_link(), luaM_new, Table::metatable, Table::node, obj2gco, setarrayvector(), setnodevector(), and Table::sizearray.

Referenced by adjust_varargs(), collectvalidlines(), f_luaopen(), lua_createtable(), luaV_execute(), and open_func().

int luaH_next | ( | lua_State * | L,
|  | Table * | t,
|  | StkId | key |
| ) |  |  |

Definition at line 162 of file ltable.c.

References Table::array, cast_num, findindex(), gnode, gval, key2tval, setnvalue, setobj2s, Table::sizearray, sizenode, and ttisnil.

Referenced by lua_next().

void luaH_resizearray | ( | lua_State * | L,
|  | Table * | t,
|  | int | nasize |
| ) |  |  |

Definition at line 327 of file ltable.c.

References dummynode, Table::node, resize(), and sizenode.

Referenced by luaV_execute().

TValue* luaH_set | ( | lua_State * | L,
|  | Table * | t,
|  | const TValue * | key |
| ) |  |  |

Definition at line 494 of file ltable.c.

References cast, Table::flags, luaG_runerror(), luaH_get(), luaO_nilobject, newkey(), nvalue, ttisnil, and ttisnumber.

Referenced by addk(), lua_rawset(), luaV_settable(), newkey(), and resize().

TValue* luaH_setnum | ( | lua_State * | L,
|  | Table * | t,
|  | int | key |
| ) |  |  |

Definition at line 508 of file ltable.c.

References cast, cast_num, luaH_getnum(), luaO_nilobject, newkey(), and setnvalue.

Referenced by adjust_varargs(), collectvalidlines(), lua_rawseti(), luaV_execute(), and resize().

TValue* luaH_setstr | ( | lua_State * | L,
|  | Table * | t,
|  | TString * | key |
| ) |  |  |

Definition at line 520 of file ltable.c.

References cast, luaH_getstr(), luaO_nilobject, newkey(), and setsvalue.

Referenced by adjust_varargs(), and luaX_newstring().

static Node* mainposition | ( | const Table * | t,
|  | const TValue * | key |
| ) |  |  | `[static]`

Definition at line 100 of file ltable.c.

References bvalue, gcvalue, hashboolean, hashnum(), hashpointer, hashstr, nvalue, pvalue, rawtsvalue, and ttype.

Referenced by findindex(), luaH_get(), and newkey().

static TValue* newkey | ( | lua_State * | L,
|  | Table * | t,
|  | const TValue * | key |
| ) |  |  | `[static]`

Definition at line 399 of file ltable.c.

References dummynode, getfreepos(), gkey, gnext, gval, key2tval, lua_assert, luaC_barriert, luaH_set(), mainposition(), rehash(), setnilvalue, lua_TValue::tt, ttisnil, and lua_TValue::value.

Referenced by luaH_set(), luaH_setnum(), and luaH_setstr().

static int numusearray | ( | const Table * | t,
|  | int * | nums |
| ) |  |  | `[static]`

Definition at line 222 of file ltable.c.

References Table::array, MAXBITS, Table::sizearray, and ttisnil.

Referenced by rehash().

static int numusehash | ( | const Table * | t,
|  | int * | nums,
|  | int * | pnasize |
| ) |  |  | `[static]`

Definition at line 247 of file ltable.c.

References countint(), gval, key2tval, Table::node, sizenode, and ttisnil.

Referenced by rehash().

static void rehash | ( | lua_State * | L,
|  | Table * | t,
|  | const TValue * | ek |
| ) |  |  | `[static]`

Definition at line 333 of file ltable.c.

References computesizes(), countint(), MAXBITS, numusearray(), numusehash(), and resize().

Referenced by newkey().

static void resize | ( | lua_State * | L,
|  | Table * | t,
|  | int | nasize,
|  | int | nhsize |
| ) |  |  | `[static]`

Definition at line 297 of file ltable.c.

References Table::array, dummynode, gval, key2tval, Table::lsizenode, luaH_set(), luaH_setnum(), luaM_freearray, luaM_reallocvector, Table::node, setarrayvector(), setnodevector(), setobjt2t, Table::sizearray, ttisnil, and twoto.

Referenced by luaH_resizearray(), and rehash().

static void setarrayvector | ( | lua_State * | L,
|  | Table * | t,
|  | int | size |
| ) |  |  | `[static]`

Definition at line 263 of file ltable.c.

References Table::array, luaM_reallocvector, setnilvalue, and Table::sizearray.

Referenced by luaH_new(), and resize().

static void setnodevector | ( | lua_State * | L,
|  | Table * | t,
|  | int | size |
| ) |  |  | `[static]`

Definition at line 272 of file ltable.c.

References cast, cast_byte, ceillog2, dummynode, gkey, gnext, gnode, gval, Table::lastfree, Table::lsizenode, luaG_runerror(), luaM_newvector, MAXBITS, Table::node, setnilvalue, and twoto.

Referenced by luaH_new(), and resize().

static int unbound_search | ( | Table * | t,
|  | unsigned int | j |
| ) |  |  | `[static]`

Definition at line 532 of file ltable.c.

References cast, luaH_getnum(), MAX_INT, and ttisnil.

Referenced by luaH_getn().

## Variable Documentation

const Node dummynode_`[static]`

Initial value:

     {
      {{NULL},  0 },
      {{{NULL},  0 , NULL}}
    }

Definition at line 75 of file ltable.c.