WebSocket implementation in WebKit

WebCore/platform/network/SocketStreamErrorBase.h

+/*
+ * Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SocketStreamErrorBase_h
+#define SocketStreamErrorBase_h
+
+namespace WebCore {
+
+class SocketStreamError;
+
+class SocketStreamErrorBase {
+public:
+    // Makes a deep copy.  Useful for when you need to use a SocketStreamError on another thread.
+    SocketStreamError copy() const;
+
+    bool isNull() const { return m_isNull; }
+
+    int errorCode() const { return m_errorCode; }
+
+    static bool compare(const SocketStreamError&, const SocketStreamError&);
+
+protected:
+    SocketStreamErrorBase()
+            : m_errorCode(0)
+            , m_isNull(true)
+    {
+    }
+
+    explicit SocketStreamErrorBase(int errorCode)
+            : m_errorCode(errorCode)
+            , m_isNull(false)
+    {
+    }
+
+    int m_errorCode;
+    bool m_isNull;
+};
+
+inline bool operator==(const SocketStreamError& a, const SocketStreamError& b) { return SocketStreamErrorBase::compare(a, b); }
+inline bool operator!=(const SocketStreamError& a, const SocketStreamError& b) { return !(a == b); }
+
+}  // namespace WebCore
+
+#endif  // SocketStreamErrorBase_h