lfunc.c-Dateireferenz

#include <stddef.h>
#include "lua.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"

Include-Abhängigkeitsdiagramm für lfunc.c:

gehe zum Quellcode dieser Datei

Makrodefinitionen
#define	lfunc_c
#define	LUA_CORE

Funktionen
LUAI_FUNC Closure *	luaF_newCclosure (lua_State *L, int nelems, Table *e)
LUAI_FUNC Closure *	luaF_newLclosure (lua_State *L, int nelems, Table *e)
LUAI_FUNC UpVal *	luaF_newupval (lua_State *L)
LUAI_FUNC UpVal *	luaF_findupval (lua_State *L, StkId level)
static void	unlinkupval (UpVal *uv)
LUAI_FUNC void	luaF_freeupval (lua_State *L, UpVal *uv)
LUAI_FUNC void	luaF_close (lua_State *L, StkId level)
LUAI_FUNC Proto *	luaF_newproto (lua_State *L)
LUAI_FUNC void	luaF_freeproto (lua_State *L, Proto *f)
LUAI_FUNC void	luaF_freeclosure (lua_State *L, Closure *c)
LUAI_FUNC const char *	luaF_getlocalname (const Proto *f, int local_number, int pc)

Makro-Dokumentation

#define lfunc_c

Definiert in Zeile 10 der Datei lfunc.c.

#define LUA_CORE

Definiert in Zeile 11 der Datei lfunc.c.

Dokumentation der Funktionen

LUAI_FUNC void luaF_close	(	lua_State *	L,
		StkId	level
	)

Definiert in Zeile 96 der Datei lfunc.c.

                                                      {
  UpVal *uv;
  global_State *g = G(L);
  while (L->openupval != NULL && (uv = ngcotouv(L->openupval))->v >= level) {
    GCObject *o = obj2gco(uv);
    lua_assert(!isblack(o) && uv->v != &uv->u.value);
    L->openupval = uv->next;  /* remove from `open' list */
    if (isdead(g, o))
      luaF_freeupval(L, uv);  /* free upvalue */
    else {
      unlinkupval(uv);
      setobj(L, &uv->u.value, uv->v);
      uv->v = &uv->u.value;  /* now current value lives here */
      luaC_linkupval(L, uv);  /* link upvalue into `gcroot' list */
    }
  }
}

LUAI_FUNC UpVal* luaF_findupval	(	lua_State *	L,
		StkId	level
	)

Definiert in Zeile 53 der Datei lfunc.c.

                                                            {
  global_State *g = G(L);
  GCObject **pp = &L->openupval;
  UpVal *p;
  UpVal *uv;
  while (*pp != NULL && (p = ngcotouv(*pp))->v >= level) {
    lua_assert(p->v != &p->u.value);
    if (p->v == level) {  /* found a corresponding upvalue? */
      if (isdead(g, obj2gco(p)))  /* is it dead? */
        changewhite(obj2gco(p));  /* ressurect it */
      return p;
    }
    pp = &p->next;
  }
  uv = luaM_new(L, UpVal);  /* not found: create a new one */
  uv->tt = LUA_TUPVAL;
  uv->marked = luaC_white(g);
  uv->v = level;  /* current value lives in the stack */
  uv->next = *pp;  /* chain it in the proper position */
  *pp = obj2gco(uv);
  uv->u.l.prev = &g->uvhead;  /* double link it in `uvhead' list */
  uv->u.l.next = g->uvhead.u.l.next;
  uv->u.l.next->u.l.prev = uv;
  g->uvhead.u.l.next = uv;
  lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
  return uv;
}

LUAI_FUNC void luaF_freeclosure	(	lua_State *	L,
		Closure *	c
	)

Definiert in Zeile 152 der Datei lfunc.c.

                                                           {
  int size = (c->c.isC) ? sizeCclosure(c->c.nupvalues) :
                          sizeLclosure(c->l.nupvalues);
  luaM_freemem(L, c, size);
}

LUAI_FUNC void luaF_freeproto	(	lua_State *	L,
		Proto *	f
	)

Definiert in Zeile 141 der Datei lfunc.c.

                                                       {
  luaM_freearray(L, f->code, f->sizecode, Instruction);
  luaM_freearray(L, f->p, f->sizep, Proto *);
  luaM_freearray(L, f->k, f->sizek, TValue);
  luaM_freearray(L, f->lineinfo, f->sizelineinfo, int);
  luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar);
  luaM_freearray(L, f->upvalues, f->sizeupvalues, TString *);
  luaM_free(L, f);
}

LUAI_FUNC void luaF_freeupval	(	lua_State *	L,
		UpVal *	uv
	)

Definiert in Zeile 89 der Datei lfunc.c.

                                                        {
  if (uv->v != &uv->u.value)  /* is it open? */
    unlinkupval(uv);  /* remove from open list */
  luaM_free(L, uv);  /* free upvalue */
}

LUAI_FUNC const char* luaF_getlocalname	(	const Proto *	f,
		int	local_number,
		int	pc
	)

Definiert in Zeile 163 der Datei lfunc.c.

                                                                                   {
  int i;
  for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
    if (pc < f->locvars[i].endpc) {  /* is variable active? */
      local_number--;
      if (local_number == 0)
        return getstr(f->locvars[i].varname);
    }
  }
  return NULL;  /* not found */
}

LUAI_FUNC Closure* luaF_newCclosure	(	lua_State *	L,
		int	nelems,
		Table *	e
	)

Definiert in Zeile 23 der Datei lfunc.c.

                                                                         {
  Closure *c = cast(Closure *, luaM_malloc(L, sizeCclosure(nelems)));
  luaC_link(L, obj2gco(c), LUA_TFUNCTION);
  c->c.isC = 1;
  c->c.env = e;
  c->c.nupvalues = cast_byte(nelems);
  return c;
}

LUAI_FUNC Closure* luaF_newLclosure	(	lua_State *	L,
		int	nelems,
		Table *	e
	)

Definiert in Zeile 33 der Datei lfunc.c.

                                                                         {
  Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems)));
  luaC_link(L, obj2gco(c), LUA_TFUNCTION);
  c->l.isC = 0;
  c->l.env = e;
  c->l.nupvalues = cast_byte(nelems);
  while (nelems--) c->l.upvals[nelems] = NULL;
  return c;
}

LUAI_FUNC Proto* luaF_newproto

(

lua_State *

L)

Definiert in Zeile 115 der Datei lfunc.c.

                                              {
  Proto *f = luaM_new(L, Proto);
  luaC_link(L, obj2gco(f), LUA_TPROTO);
  f->k = NULL;
  f->sizek = 0;
  f->p = NULL;
  f->sizep = 0;
  f->code = NULL;
  f->sizecode = 0;
  f->sizelineinfo = 0;
  f->sizeupvalues = 0;
  f->nups = 0;
  f->upvalues = NULL;
  f->numparams = 0;
  f->is_vararg = 0;
  f->maxstacksize = 0;
  f->lineinfo = NULL;
  f->sizelocvars = 0;
  f->locvars = NULL;
  f->linedefined = 0;
  f->lastlinedefined = 0;
  f->source = NULL;
  return f;
}

LUAI_FUNC UpVal* luaF_newupval

(

lua_State *

L)

Definiert in Zeile 44 der Datei lfunc.c.

                                              {
  UpVal *uv = luaM_new(L, UpVal);
  luaC_link(L, obj2gco(uv), LUA_TUPVAL);
  uv->v = &uv->u.value;
  setnilvalue(uv->v);
  return uv;
}

static void unlinkupval ( UpVal *  uv)

static

Definiert in Zeile 82 der Datei lfunc.c.

                                    {
  lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
  uv->u.l.next->u.l.prev = uv->u.l.prev;  /* remove from `uvhead' list */
  uv->u.l.prev->u.l.next = uv->u.l.next;
}