1793826 - Remove nsFrameList::FrameLinkEnumerator

Status: RESOLVED FIXED

(Core :: Layout, task)

Description

[Ting-Yu Lin [:TYLin] (PDT, UTC-7)]

nsFrameList::FrameLinkEnumerator iterates "links" between frames, which is an idea rarely used in layout.

To iterate nsFrameList, we can use a ranged-based for-loop, or nsFrameList::Iterator.

Comment 1

[Ting-Yu Lin [:TYLin] (PDT, UTC-7)]

Attachment: Bug 1793826 Part 1 - Change nsFrameList::ExtractHead and ExtractTail to take nsIFrame* argument. r?#layout

This is a preparation to remove nsFrameList::FrameLinkEnumerator in the next
part.

FrameLinkEnumerator::Find() can be replaced with std::find/std::find_if.

Comment 2

[Ting-Yu Lin [:TYLin] (PDT, UTC-7)]

Attachment: Bug 1793826 Part 2 - Remove nsFrameList::FrameLinkEnumerator. r?#layout

Change the last caller of FrameLinkEnumerator to use Iterator instead, and we
are ready to remove it.

Depends on D158700

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/01820845ab62
Part 1 - Change nsFrameList::ExtractHead and ExtractTail to take nsIFrame* argument. r=emilio
https://hg.mozilla.org/integration/autoland/rev/9e398426c46f
Part 2 - Remove nsFrameList::FrameLinkEnumerator. r=emilio

Comment 4

[Natalia Csoregi [:nataliaCs]]

Backed out for causing build bustages.

• backout: https://hg.mozilla.org/integration/autoland/rev/d8f75e7223181b0ab622fad1edaaf4f309bc2c37
• push: https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&revision=9e398426c46fd9912c53b66263c6ac5020f8b855
• failure log: https://treeherder.mozilla.org/logviewer?job_id=392385224&repo=autoland&lineNumber=21928

[task 2022-10-06T00:37:12.030Z] 00:37:12     INFO -  In file included from /builds/worker/workspace/obj-build/dist/stl_wrappers/xutility:54:
[task 2022-10-06T00:37:12.031Z] 00:37:12     INFO -  /builds/worker/fetches/vs/vc/tools/msvc/14.16.27023/include/xutility(848,7): error: object of type 'nsFrameList::Iterator' cannot be assigned because its copy assignment operator is implicitly deleted
[task 2022-10-06T00:37:12.031Z] 00:37:12     INFO -                  _It = _UIt;
[task 2022-10-06T00:37:12.031Z] 00:37:12     INFO -                      ^
[task 2022-10-06T00:37:12.031Z] 00:37:12     INFO -  /builds/worker/fetches/vs/vc/tools/msvc/14.16.27023/include/xutility(3541,2): note: in instantiation of function template specialization 'std::_Seek_wrapped<nsFrameList::Iterator, nsFrameList::Iterator>' requested here
[task 2022-10-06T00:37:12.031Z] 00:37:12     INFO -          _Seek_wrapped(_First,
[task 2022-10-06T00:37:12.032Z] 00:37:12     INFO -          ^
[task 2022-10-06T00:37:12.032Z] 00:37:12     INFO -  /builds/worker/checkouts/gecko/layout/generic/nsContainerFrame.cpp(1427,29): note: in instantiation of function template specialization 'std::find<nsFrameList::Iterator, nsIFrame *>' requested here
[task 2022-10-06T00:37:12.032Z] 00:37:12     INFO -    if (auto childIter = std::find(mFrames.begin(), mFrames.end(), aChild);
[task 2022-10-06T00:37:12.032Z] 00:37:12     INFO -                              ^
[task 2022-10-06T00:37:12.033Z] 00:37:12     INFO -  /builds/worker/workspace/obj-build/dist/include/nsFrameList.h(498,24): note: copy assignment operator of 'Iterator' is implicitly deleted because field 'mList' is of reference type 'const nsFrameList &'
[task 2022-10-06T00:37:12.033Z] 00:37:12     INFO -      const nsFrameList& mList;
[task 2022-10-06T00:37:12.034Z] 00:37:12     INFO -                         ^
[task 2022-10-06T00:37:12.034Z] 00:37:12     INFO -  1 error generated.
[task 2022-10-06T00:37:12.035Z] 00:37:12    ERROR -  gmake[4]: *** [/builds/worker/checkouts/gecko/config/rules.mk:668: Unified_cpp_layout_generic1.obj] Error 1
[task 2022-10-06T00:37:12.035Z] 00:37:12     INFO -  gmake[4]: Leaving directory '/builds/worker/workspace/obj-build/layout/generic'
[task 2022-10-06T00:37:12.036Z] 00:37:12     INFO -  gmake[4]: *** Waiting for unfinished jobs....

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/cf6607770818
Part 1 - Change nsFrameList::ExtractHead and ExtractTail to take nsIFrame* argument. r=emilio
https://hg.mozilla.org/integration/autoland/rev/9a1090f6834c
Part 2 - Remove nsFrameList::FrameLinkEnumerator. r=emilio

Comment 6

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/cf6607770818
https://hg.mozilla.org/mozilla-central/rev/9a1090f6834c