/*
Function to iterate and return the next element value.
NOTE: this is not a method of Array. Rather, it is a callback function for Iterator
*/
static EjsObj *nextValue(Ejs *ejs, EjsIterator *ip, int argc, EjsObj **argv)
{
EjsFile *fp;
fp = (EjsFile*) ip->target;
if (!ejsIs(ejs, fp, File)) {
ejsThrowReferenceError(ejs, "Wrong type");
return 0;
}
if (ip->index < fp->info.size) {
#if !ME_CC_MMU || 1
if (mprSeekFile(fp->file, SEEK_CUR, 0) != ip->index) {
if (mprSeekFile(fp->file, SEEK_SET, ip->index) != ip->index) {
ejsThrowIOError(ejs, "Cannot seek to %d", ip->index);
return 0;
}
}
ip->index++;
return (EjsObj*) ejsCreateNumber(ejs, mprGetFileChar(fp->file));
#else
return (EjsObj*) ejsCreateNumber(ejs, fp->mapped[ip->index++]);
#endif
}
#if ME_CC_MMU && FUTURE
unmapFile(fp);
fp->mapped = 0;
#endif
ejsThrowStopIteration(ejs);
return 0;
}
/*
Function to iterate and return the next element value.
NOTE: this is not a method of Array. Rather, it is a callback function for Iterator
*/
static EjsObj *nextArrayValue(Ejs *ejs, EjsIterator *ip, int argc, EjsObj **argv)
{
EjsArray *ap;
EjsObj *vp, **data;
ap = (EjsArray*) ip->target;
if (!ejsIs(ejs, ap, Array)) {
ejsThrowReferenceError(ejs, "Wrong type");
return 0;
}
data = ap->data;
if (ap->length < ip->length) {
ip->length = ap->length;
}
for (; ip->index < ip->length; ip->index++) {
vp = data[ip->index];
assert(vp);
if (ejsIs(ejs, vp, Void)) {
continue;
}
ip->index++;
return vp;
}
ejsThrowStopIteration(ejs);
return 0;
}
/*
Call the supplied next() function to return the next enumerable item
*/
static EjsObj *nextIterator(Ejs *ejs, EjsIterator *ip, int argc, EjsObj **argv)
{
if (ip->nativeNext) {
return (ip->nativeNext)(ejs, ip, argc, argv);
} else {
ejsThrowStopIteration(ejs);
return 0;
}
}
/*
Function to iterate and return the next element index.
NOTE: this is not a method of Array. Rather, it is a callback function for Iterator
*/
static EjsNumber *nextKey(Ejs *ejs, EjsIterator *ip, int argc, EjsObj **argv)
{
EjsFile *fp;
fp = (EjsFile*) ip->target;
if (!ejsIs(ejs, fp, File)) {
ejsThrowReferenceError(ejs, "Wrong type");
return 0;
}
if (ip->index < fp->info.size) {
return ejsCreateNumber(ejs, ip->index++);
}
ejsThrowStopIteration(ejs);
return 0;
}
/*
* Call the supplied next() function to return the next enumerable item
*/
static EjsVar *nextIterator(Ejs *ejs, EjsIterator *ip, int argc, EjsVar **argv)
{
if (ip->nativeNext) {
return (ip->nativeNext)(ejs, (EjsVar*) ip, argc, argv);
} else {
ejsThrowStopIteration(ejs);
return 0;
}
#if UNUSED && TODO
if (ip->nativeNext) {
return (ip->nativeNext)(ejs, (EjsVar*) ip, argc, argv);
}
return ejsRunFunction(ejs, ip->next, ip->target, argc, argv);
#endif
}
/*
Function to iterate and return the next element name.
NOTE: this is not a method of Xml. Rather, it is a callback function for Iterator
*/
static EjsObj *nextXmlKey(Ejs *ejs, EjsIterator *ip, int argc, EjsObj **argv)
{
EjsXML *xml;
xml = (EjsXML*) ip->target;
if (!ejsIsXML(ejs, xml)) {
ejsThrowReferenceError(ejs, "Wrong type");
return 0;
}
if (ip->index < mprGetListLength(xml->elements)) {
return (EjsObj*) ejsCreateNumber(ejs, ip->index++);
}
ejsThrowStopIteration(ejs);
return 0;
}
/*
Function to iterate and return the next element value.
NOTE: this is not a method of Xml. Rather, it is a callback function for Iterator
*/
static EjsObj *nextXmlValue(Ejs *ejs, EjsIterator *ip, int argc, EjsObj **argv)
{
EjsXML *xml, *vp;
xml = (EjsXML*) ip->target;
if (!ejsIsXML(ejs, xml)) {
ejsThrowReferenceError(ejs, "Wrong type");
return 0;
}
for (; ip->index < mprGetListLength(xml->elements); ip->index++) {
vp = (EjsXML*) mprGetItem(xml->elements, ip->index);
if (vp == 0) {
continue;
}
ip->index++;
return (EjsObj*) vp;
}
ejsThrowStopIteration(ejs);
return 0;
}
/*
* Function to iterate and return the next element name.
* NOTE: this is not a method of Array. Rather, it is a callback function for Iterator
*/
static EjsVar *nextArrayKey(Ejs *ejs, EjsIterator *ip, int argc, EjsVar **argv)
{
EjsArray *ap;
EjsVar *vp, **data;
ap = (EjsArray*) ip->target;
if (!ejsIsArray(ap)) {
ejsThrowReferenceError(ejs, "Wrong type");
return 0;
}
data = ap->data;
for (; ip->index < ap->length; ip->index++) {
vp = data[ip->index];
if (vp == 0) {
continue;
}
return (EjsVar*) ejsCreateNumber(ejs, ip->index++);
}
ejsThrowStopIteration(ejs);
return 0;
}
