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Rewrite flow construction to be incrementalizable and parallelizable.

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This replaces flow construction with a strict bottom-up tree traversal,
allowing for parallelism. Each step of the traversal creates a flow or
a `ConstructionItem`, similar to how Gecko works. {ib} splits are
handled by not creating `InlineFlow`s until the containing block is
reached.

This should be able to be incrementalized by storing the `Flow` from
layout to layout, and performing fixups during flow construction
and/or wiping containing blocks in a previous pass.
This commit is contained in:
Patrick Walton 2013-11-09 21:39:39 -08:00
parent 37f9427b6c
commit 155befe10d
24 changed files with 1259 additions and 889 deletions
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20
src/test/html/inline-block-split-2.html Normal file
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<!DOCTYPE html>
<html>
<head>
<title>Anonymous text interrupted by a block</title>
<style>
body { display: block }
p { display: inline }
span { display: block }
</style>
</head>
<body>
<p>
This is anonymous text before the SPAN.
<span>This is the content of SPAN.</span>
This is anonymous text after the SPAN.
</p>
</p>
</body>
</html>