Created
October 6, 2014 22:04
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| var items = [], | |
| nextItem = Zotero.Promise.defer(); | |
| var generator = function* () { | |
| let i=0; | |
| while (i<items.length || nextItem) { | |
| for (; i<items.length; i++) { | |
| yield items[i]; | |
| } | |
| if (nextItem) { | |
| i = items.length; // The item will get pushed, so skip it later | |
| yield nextItem.promise; | |
| } | |
| } | |
| return Zotero.Promise.resolve(); | |
| } | |
| // Items are sent here asynchronously | |
| var someCallbackThatReceivesItems = function(item) { | |
| if (!item) { | |
| // No more items | |
| nextItem.resolve(); | |
| nextItem = null; | |
| return; | |
| } | |
| items.push(nextItem.promise); | |
| nextItem.resolve(item); | |
| nextItem = Zotero.Promise.defer(); | |
| }; | |
| // Iterate through items | |
| Zotero.Promise.coroutine(function *(){ | |
| let iterator = generator(); | |
| let item; | |
| while (item = yield iterator.next().value) { | |
| Zotero.debug("got item"); | |
| } | |
| Zotero.debug("done!"); | |
| })(); |
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