36921 2010-03-31 19:06:49 -0700 Split RenderBlock::layoutInlineChildren into smaller functions 2022-10-03 14:42:20 -0700 1 1 1 Unclassified WebKit New Bugs 528+ (Nightly build) Other OS X 10.5 RESOLVED CONFIGURATION CHANGED P2 Normal --- 37114 60052 60080 57779 1 jamesr jamesr abarth ahmad.saleem792 ap eric hyatt leviw mitz rniwa simon.fraser webkit.review.bot zalan oldest_to_newest 206891 0 jamesr 2010-03-31 19:06:49 -0700 Split RenderBlock::layoutInlineChildren into smaller functions 206892 1 52237 jamesr 2010-03-31 19:08:39 -0700 Created attachment 52237 Patch 206896 2 jamesr 2010-03-31 19:10:59 -0700 Hopefully this is slightly more readable and easy to edit. I've been careful not to change any logic, just moved code into new functions, added comments, and renamed a few variables that were confusingly named. 206899 3 webkit.review.bot 2010-03-31 19:14:29 -0700 Attachment 52237 did not pass style-queue: Failed to run "WebKitTools/Scripts/check-webkit-style" exit_code: 1 WebCore/rendering/RenderBlockLineLayout.cpp:817: One line control clauses should not use braces. [whitespace/braces] [4] WebCore/rendering/RenderBlockLineLayout.cpp:867: One space before end of line comments [whitespace/comments] [5] Total errors found: 2 in 3 files If any of these errors are false positives, please file a bug against check-webkit-style. 207394 4 52237 darin 2010-04-01 14:04:51 -0700 Comment on attachment 52237 Patch Good idea. > + struct FloatWithRect { Since all the helper functions are member functions, I don't see why we need to make the FloatWithRect struct public. Maybe this is left over from an earlier version of the patch? > + bool layoutReplacedElements(bool relayoutChildren, bool fullLayout, Vector<FloatWithRect>& floats); We don't need the argument name "floats" here. > + RootInlineBox* createLineBoxesForResolver(const InlineBidiResolver& resolver, const InlineIterator& currentPosition, > + bool firstLine, bool previousLineBrokeCleanly, BidiRun* trailingSpaceRun); We don't line up subsequent lines with the "(" from the first line in WebKit. We don't need the argument name "resolver" here and it's arguably we don't need the name "currentPosition" either. And for the actual function definition I also think that "currentPosition" is possibly a too-long name. I suggest just "position", which although ambiguous is shorter and probably clearer despite the ambiguity. > + void layoutRunsAndFloats(bool fullLayout, Vector<FloatWithRect>& floats, int& repaintTop, int& repaintBottom); We don't need the argument name "floats" here. > +bool RenderBlock::layoutReplacedElements(bool relayoutChildren, bool fullLayout, Vector<FloatWithRect>& floats) May want to consider marking this "used in only one place" function inline. Same with others. In some cases that results in smaller code size and slightly better performance. > + RenderObject* o = bidiFirst(this, 0, false); > + while (o) { It's good that you just moved the code and kept the changes to a minimum. Two things I would change in this code in the future would be using a word instead of the letter "o" and use a for loop instead of a while loop. > + lineBox = constructLine(resolver.runCount(), resolver.firstRun(), resolver.lastRun(), firstLine, > + !currentPosition.obj, currentPosition.obj && !currentPosition.pos ? currentPosition.obj : 0); We don't line up second lines under the "(" like this in WebKit code. If the length of the line bothers you than I suggest we use local variables for some of these expressions. One such expression would be "currentPosition.obj && !currentPosition.pos ? currentPosition.obj : 0". And I don't see why that needs "currentPosition.obj &&" in it at all. > + size_t floatCount = floats.size(); > + // Floats that did not have layout did not repaint when we laid them out. They would have > + // painted by now if they had moved, but if they stayed at (0, 0), they still need to be > + // painted. > + for (size_t i = 0; i < floatCount; ++i) { Not new, but it's quite change that this comment is tucked in between the floatCount line and the for line. I would move the comment up one line. Since this is a refactoring patch, I'm going to say review- due to the fact that it needlessly makes FloatWithRect public. 207400 5 jamesr 2010-04-01 14:14:48 -0700 Yes, making FloatWithRect public was from an earlier revision and not intentional. Thank you for reviewing, I'll upload an updated patch shortly. 207545 6 52357 jamesr 2010-04-01 17:44:32 -0700 Created attachment 52357 Patch 207550 7 webkit.review.bot 2010-04-01 17:46:49 -0700 Attachment 52357 did not pass style-queue: Failed to run "WebKitTools/Scripts/check-webkit-style" exit_code: 1 WebCore/rendering/RenderBlockLineLayout.cpp:817: One line control clauses should not use braces. [whitespace/braces] [4] Total errors found: 1 in 3 files If any of these errors are false positives, please file a bug against check-webkit-style. 207552 8 jamesr 2010-04-01 17:47:52 -0700 I experimented with adding the 'inline' keyword to each of the called functions, but gcc still refused to inline any of them at -O3 citing "--param max-inline-insns-single limit reached" meaning it thought the function body was too large to consider inlining. I can add the keyword back if you think it might help on other platforms. 208134 9 jamesr 2010-04-02 16:21:56 -0700 Committed r57030: <http://trac.webkit.org/changeset/57030> 208721 10 abarth 2010-04-05 14:53:03 -0700 Rollout landed in r57096. 208722 11 jamesr 2010-04-05 14:55:52 -0700 This regressed fast/repaint/line-flow-with-floats-9 in pixel mode. Reverted at http://trac.webkit.org/changeset/57096, will update the patch once I figure out how I broke stuff. 209483 12 eric 2010-04-06 23:46:53 -0700 Attachment 52357 was posted by a committer and has review+, assigning to James Robinson for commit. 226643 13 52357 eric 2010-05-17 00:35:21 -0700 Comment on attachment 52357 Patch Marking r- since this was reverted. 397228 14 eric 2011-05-03 11:41:12 -0700 I'm re-writing James' patch in smaller pieces. I'll attach patches to dependent bugs. 397368 15 eric 2011-05-03 14:04:09 -0700 Well, I found the cause of the regression, James. See bug 60052 397953 16 rniwa 2011-05-04 09:05:58 -0700 Is this bug now fixed given that layoutInlineChildren has been broken down into smaller pieces? http://trac.webkit.org/browser/trunk/Source/WebCore/rendering/RenderBlockLineLayout.cpp#L1103 1902700 17 ahmad.saleem792 2022-10-02 01:30:17 -0700 (In reply to Ryosuke Niwa from comment #16) > Is this bug now fixed given that layoutInlineChildren has been broken down > into smaller pieces? > http://trac.webkit.org/browser/trunk/Source/WebCore/rendering/ > RenderBlockLineLayout.cpp#L1103 Is this required anymore because as mentioned by Ryosuke, this refactoring / simplification happened already? Thanks! 1902932 18 ap 2022-10-03 14:42:20 -0700 We've been asking each other about whether this refactoring is done for 10+ years, I think it's time to stop. 52237 2010-03-31 19:08:39 -0700 2010-04-01 17:44:29 -0700 Patch bug-36921-20100331190835.patch text/plain 39315 jamesr ZGlmZiAtLWdpdCBhL1dlYkNvcmUvQ2hhbmdlTG9nIGIvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXgg MDk2ZWUzOC4uNGJlMDVkYyAxMDA2NDQKLS0tIGEvV2ViQ29yZS9DaGFuZ2VMb2cKKysrIGIvV2Vi Q29yZS9DaGFuZ2VMb2cKQEAgLTEsMyArMSwyOSBAQAorMjAxMC0wMy0zMSAgSmFtZXMgUm9iaW5z b24gIDxqYW1lc3JAY2hyb21pdW0ub3JnPgorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAo T09QUyEpLgorCisgICAgICAgIFNwbGl0cyBSZW5kZXJCbG9jazo6bGF5b3V0SW5saW5lIGludG8g c21hbGxlciBmdW5jdGlvbnMKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19i dWcuY2dpP2lkPTM2OTIxCisKKyAgICAgICAgUmVuZGVyQmxvY2s6OmxheW91dElubGluZUNoaWxk cmVuIGlzIDM1MSBsaW5lcyBsb25nIGFuZCB2ZXJ5IGRpZmZpY3VsdAorICAgICAgICB0byBjb21w cmVoZW5kIG9yIGVkaXQgc2FmZWx5LiBUaGlzIHBhdGNoIHNwbGl0cyBpdCB1cCBpbnRvIGEgZmV3 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