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Avoid unnecessary parsing, in Page.GetStructTree, when no structTree is available (PR 13221 follow-up)

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It's obviously (a bit) more efficient to return early in `Page.getStructTree`, rather than trying to first "parse" an *empty* structTree-root.

*Somehow I didn't think of this yesterday, but this feels like a much better solution overall; sorry about the churn here!*
This commit is contained in:
Jonas Jenwald 2021-04-12 08:52:35 +02:00
parent 0d2dd6c2fe
commit 9360c7cbdc
3 changed files with 10 additions and 14 deletions
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12
src/core/worker.js
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@ -743,15 +743,9 @@ class WorkerMessageHandler {
});
handler.on("GetStructTree", function wphGetStructTree(data) {
const pageIndex = data.pageIndex;
return pdfManager
.getPage(pageIndex)
.then(function (page) {
return pdfManager.ensure(page, "getStructTree");
})
.then(function (structTree) {
return structTree.serializable;
});
return pdfManager.getPage(data.pageIndex).then(function (page) {
return pdfManager.ensure(page, "getStructTree");
});
});
handler.on("FontFallback", function (data) {