/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef nsURIHashKey_h__ #define nsURIHashKey_h__ #include "PLDHashTable.h" #include "nsCOMPtr.h" #include "nsIURI.h" #include "nsHashKeys.h" #include "mozilla/Unused.h" /** * Hashtable key class to use with nsTHashtable/nsBaseHashtable */ class nsURIHashKey : public PLDHashEntryHdr { public: typedef nsIURI* KeyType; typedef const nsIURI* KeyTypePointer; explicit nsURIHashKey(const nsIURI* aKey) : mKey(const_cast<nsIURI*>(aKey)) { MOZ_COUNT_CTOR(nsURIHashKey); } nsURIHashKey(const nsURIHashKey& toCopy) : mKey(toCopy.mKey) { MOZ_COUNT_CTOR(nsURIHashKey); } ~nsURIHashKey() { MOZ_COUNT_DTOR(nsURIHashKey); } nsIURI* GetKey() const { return mKey; } bool KeyEquals(const nsIURI* aKey) const { bool eq; if (!mKey) { return !aKey; } if (NS_SUCCEEDED(mKey->Equals(const_cast<nsIURI*>(aKey), &eq))) { return eq; } return false; } static const nsIURI* KeyToPointer(nsIURI* aKey) { return aKey; } static PLDHashNumber HashKey(const nsIURI* aKey) { if (!aKey) { // If the key is null, return hash for empty string. return mozilla::HashString(EmptyCString()); } nsAutoCString spec; // If GetSpec() fails, ignoring the failure and proceeding with an // empty |spec| seems like the best thing to do. mozilla::Unused << const_cast<nsIURI*>(aKey)->GetSpec(spec); return mozilla::HashString(spec); } enum { ALLOW_MEMMOVE = true }; protected: nsCOMPtr<nsIURI> mKey; }; #endif // nsURIHashKey_h__