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-rw-r--r--netwerk/base/nsURIHashKey.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/netwerk/base/nsURIHashKey.h b/netwerk/base/nsURIHashKey.h
new file mode 100644
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+++ b/netwerk/base/nsURIHashKey.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 <utility>
+
+#include "PLDHashTable.h"
+#include "mozilla/Unused.h"
+#include "nsCOMPtr.h"
+#include "nsHashKeys.h"
+#include "nsIURI.h"
+
+/**
+ * Hashtable key class to use with nsTHashtable/nsBaseHashtable
+ */
+class nsURIHashKey : public PLDHashEntryHdr {
+ public:
+ typedef nsIURI* KeyType;
+ typedef const nsIURI* KeyTypePointer;
+
+ nsURIHashKey() { MOZ_COUNT_CTOR(nsURIHashKey); }
+ explicit nsURIHashKey(const nsIURI* aKey) : mKey(const_cast<nsIURI*>(aKey)) {
+ MOZ_COUNT_CTOR(nsURIHashKey);
+ }
+ nsURIHashKey(nsURIHashKey&& toMove)
+ : PLDHashEntryHdr(std::move(toMove)), mKey(std::move(toMove.mKey)) {
+ MOZ_COUNT_CTOR(nsURIHashKey);
+ }
+ MOZ_COUNTED_DTOR(nsURIHashKey)
+
+ nsURIHashKey& operator=(const nsURIHashKey& aOther) {
+ mKey = aOther.mKey;
+ return *this;
+ }
+
+ 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(""_ns);
+ }
+ 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__