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authordodji <dodji>2014-12-26 18:08:57 +0000
committerdodji <dodji>2014-12-26 18:08:57 +0000
commitcf6a7048df8faef6945a178a54860cb625d9fbe0 (patch)
treec2047370198b87a0adfe0d4d72bc94ca6eb1aaeb /apidoc/group___canonical_diff.html
parentUpdate for source code git commit 8e9dbc9 (diff)
Update apidoc to git tree master commit 9418ad46de0f141e0fedb46d1bc17daef714683f
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79<div class="title">Canonical diff tree nodes</div> </div>
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82<dl class="section user"><dt>Equivalence of diff nodes</dt><dd></dd></dl>
83<p>Each <a class="el" href="classabigail_1_1comparison_1_1diff.html">diff</a> node has a property named <em>Canonical Diff Node</em>. If <code>D</code> is a diff node, the canonical diff node of <code>D</code>, noted <code>C(D)</code> is a particular diff node that is equal to <code>D</code>. Thus, a fast way to compare two <a class="el" href="classabigail_1_1comparison_1_1diff.html">diff</a> node is to perform a pointer comparison of their canonical diff nodes.</p>
84<p>A set of equivalent <a class="el" href="classabigail_1_1comparison_1_1diff.html">diff</a> nodes is a set of diff nodes that all have the same canonical node. All the nodes of that set are equal.</p>
85<p>A canonical node is registereded for a given diff node by invoking the method <a class="el" href="classabigail_1_1comparison_1_1diff__context.html#a2508fdea9043690d04e3cba05646537d" title="Set the canonical diff node property of a given diff node appropriately.">diff_context::initialize_canonical_diff()</a>.</p>
86<p>Please note that the <a class="el" href="classabigail_1_1comparison_1_1diff__context.html" title="The context of the diff. This type holds various bits of information that is going to be used through...">diff_context</a> holds all the canonical diffs that got registered through it. Thus, the life time of all of canonical diff objects is the same as the life time of the <a class="el" href="classabigail_1_1comparison_1_1diff__context.html">diff_context</a> they relate to. </p>
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