[Webkit-unassigned] [Bug 70565] HashMap should support OwnPtr

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=70565





--- Comment #3 from Adam Klein <adamk at chromium.org>  2011-10-24 15:27:52 PST ---
There's more trouble here than just porting over VectorTraits<OwnPtr> to HashTraits<OwnPtr>.  Besides needing to teach HashTable how to copy an OwnPtr, the interface would also need to be tweaked to do the OwnPtr -> raw ptr or OwnPtr -> PassOwnPtr conversion.  For example, some problematic methods:

MappedType get(const KeyType&) const;
MappedType take(const KeyType&);
pair<iterator, bool> set(const KeyType&, const MappedType&);
pair<iterator, bool> add(const KeyType&, const MappedType&);

All of these present some problems if MappedType were to be OwnPtr<T>, problems that aren't present in Vector<OwnPtr<T> > due to the latter's use of references and pointers in its interface.

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