static IOFileUD *io_tofilep(lua_State *L)
{
if (!(L->base < L->top && tvisudata(L->base) &&
udataV(L->base)->udtype == UDTYPE_IO_FILE))
lj_err_argtype(L, 1, "FILE*");
return (IOFileUD *)uddata(udataV(L->base));
}
static void LJ_FASTCALL recff_math_random(jit_State *J, RecordFFData *rd)
{
GCudata *ud = udataV(&J->fn->c.upvalue[0]);
TRef tr, one;
lj_ir_kgc(J, obj2gco(ud), IRT_UDATA); /* Prevent collection. */
tr = lj_ir_call(J, IRCALL_lj_math_random_step, lj_ir_kptr(J, uddata(ud)));
one = lj_ir_knum_one(J);
tr = emitir(IRTN(IR_SUB), tr, one);
if (J->base[0]) {
TRef tr1 = lj_ir_tonum(J, J->base[0]);
if (J->base[1]) { /* d = floor(d*(r2-r1+1.0)) + r1 */
TRef tr2 = lj_ir_tonum(J, J->base[1]);
tr2 = emitir(IRTN(IR_SUB), tr2, tr1);
tr2 = emitir(IRTN(IR_ADD), tr2, one);
tr = emitir(IRTN(IR_MUL), tr, tr2);
tr = emitir(IRTN(IR_FPMATH), tr, IRFPM_FLOOR);
tr = emitir(IRTN(IR_ADD), tr, tr1);
} else { /* d = floor(d*r1) + 1.0 */
tr = emitir(IRTN(IR_MUL), tr, tr1);
tr = emitir(IRTN(IR_FPMATH), tr, IRFPM_FLOOR);
tr = emitir(IRTN(IR_ADD), tr, one);
}
}
J->base[0] = tr;
UNUSED(rd);
}
static IOFileUD *io_file_new(lua_State *L)
{
IOFileUD *iof = (IOFileUD *)lua_newuserdata(L, sizeof(IOFileUD));
GCudata *ud = udataV(L->top-1);
ud->udtype = UDTYPE_IO_FILE;
/* NOBARRIER: The GCudata is new (marked white). */
setgcrefr(ud->metatable, curr_func(L)->c.env);
iof->fp = NULL;
iof->type = IOFILE_TYPE_FILE;
return iof;
}
/* Return pointer to object or its object data. */
const void * LJ_FASTCALL lj_obj_ptr(cTValue *o)
{
if (tvisudata(o))
return uddata(udataV(o));
else if (tvislightud(o))
return lightudV(o);
else if (LJ_HASFFI && tviscdata(o))
return cdataptr(cdataV(o));
else if (tvisgcv(o))
return gcV(o);
else
return NULL;
}
/* Lookup metamethod for object. */
cTValue *lj_meta_lookup(lua_State *L, cTValue *o, MMS mm)
{
GCtab *mt;
if (tvistab(o))
mt = tabref(tabV(o)->metatable);
else if (tvisudata(o))
mt = tabref(udataV(o)->metatable);
else
mt = tabref(basemt_obj(G(L), o));
if (mt) {
cTValue *mo = lj_tab_getstr(mt, mmname_str(G(L), mm));
if (mo)
return mo;
}
return niltv(L);
}
static int io_file_iter(lua_State *L)
{
GCfunc *fn = curr_func(L);
IOFileUD *iof = uddata(udataV(&fn->c.upvalue[0]));
int n = fn->c.nupvalues - 1;
if (iof->fp == NULL)
lj_err_caller(L, LJ_ERR_IOCLFL);
L->top = L->base;
if (n) { /* Copy upvalues with options to stack. */
if (n > LUAI_MAXCSTACK)
lj_err_caller(L, LJ_ERR_STKOV);
lj_state_checkstack(L, (MSize)n);
memcpy(L->top, &fn->c.upvalue[1], n*sizeof(TValue));
L->top += n;
}
n = io_file_read(L, iof->fp, 0);
if (ferror(iof->fp))
lj_err_callermsg(L, strVdata(L->top-2));
if (tvisnil(L->base) && (iof->type & IOFILE_FLAG_CLOSE)) {
io_file_close(L, iof); /* Return values are ignored. */
return 0;
}
return n;
}
