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Shorten the PDFDocument.prototype.fieldObjects getter slightly #19903

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Snuffleupagus
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The effect is probably not even measurable, however this patch ever so slightly reduces the asynchronicity in the fieldObjects getter. These changes should be safe since:

  • We're inside of the PDFDocument-class and the annotationGlobals-getter, which will always return a (shadowed) Promise and won't throw MissingDataExceptions, can be accessed directly without going through the BasePdfManager-instance.

  • The acroForm-dictionary can be accessed through the annotationGlobals-data, removing the need to "manually" look it up and thus the need for using Promise.all here.

  • We can also lookup the /Fields-data, in the acroForm-dictionary, synchronously since the initial formInfo.hasFields check guarantees that it's available.

The effect is probably not even measurable, however this patch ever so slightly reduces the asynchronicity in the `fieldObjects` getter. These changes should be safe since:

 - We're inside of the `PDFDocument`-class and the `annotationGlobals`-getter, which will always return a (shadowed) Promise and won't throw `MissingDataException`s, can be accessed directly without going through the `BasePdfManager`-instance.

 - The `acroForm`-dictionary can be accessed through the `annotationGlobals`-data, removing the need to "manually" look it up and thus the need for using `Promise.all` here.

 - We can also lookup the /Fields-data, in the `acroForm`-dictionary, synchronously since the initial `formInfo.hasFields` check guarantees that it's available.
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/botio test

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From: Bot.io (Windows)


Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.193.163.58:8877/57737e487ed05a3/output.txt

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From: Bot.io (Linux m4)


Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.241.84.105:8877/998bbb19f36abec/output.txt

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From: Bot.io (Linux m4)


Failed

Full output at http://54.241.84.105:8877/998bbb19f36abec/output.txt

Total script time: 30.00 mins

  • Unit tests: Passed
  • Integration Tests: FAILED
  • Regression tests: Passed

@Snuffleupagus Snuffleupagus requested a review from calixteman May 8, 2025 07:47
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LGTM. Thank you.

@calixteman calixteman merged commit 293506a into mozilla:master May 9, 2025
9 checks passed
@Snuffleupagus Snuffleupagus deleted the shorten-fieldObjects-getter branch May 10, 2025 09:18
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3 participants