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<title>[208962] trunk/Source/WebCore</title>
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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/208962">208962</a></dd>
<dt>Author</dt> <dd>svillar@igalia.com</dd>
<dt>Date</dt> <dd>2016-11-22 06:34:55 -0800 (Tue, 22 Nov 2016)</dd>
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<h3>Log Message</h3>
<pre>[css-grid] Isolate size of internal representation from actual grid size
https://bugs.webkit.org/show_bug.cgi?id=165006
Reviewed by Manuel Rego Casasnovas.
RenderGrid has an internal representation of a grid used to place grid items, compute grid
positions, run the track sizing algorithm etc. That data structure normally has exactly the
same size as the actual grid specified using the grid-template-xxx properties (or any other
shorthand). But in some cases, like for example when the grid is empty, the internal data
structure does not really match the actual grid. In the particular case of empty grids no
memory allocations are done to create a grid representation as it is not needed.