change the directory structurejarred/rename

1 files changed, 96 insertions, 0 deletions

diff --git a/src/bun.js/bindings/webcore/CallbackResult.h b/src/bun.js/bindings/webcore/CallbackResult.h
new file mode 100644
index 000000000..878fe4221
--- /dev/null
+++ b/src/bun.js/bindings/webcore/CallbackResult.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2017 Apple 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
+ */
+
+#pragma once
+
+#include <wtf/Expected.h>
+
+namespace WebCore {
+
+enum class CallbackResultType {
+    Success,
+    ExceptionThrown,
+    UnableToExecute
+};
+
+template<typename ReturnType> class CallbackResult {
+public:
+    CallbackResult(CallbackResultType);
+    CallbackResult(ReturnType&&);
+
+    CallbackResultType type() const;
+    ReturnType&& releaseReturnValue();
+
+private:
+    Expected<ReturnType, CallbackResultType> m_value;
+};
+
+template<> class CallbackResult<void> {
+public:
+    CallbackResult() = default;
+    CallbackResult(CallbackResultType);
+
+    CallbackResultType type() const;
+
+private:
+    CallbackResultType m_type = CallbackResultType::Success;
+};
+
+
+template<typename ReturnType> inline CallbackResult<ReturnType>::CallbackResult(CallbackResultType type)
+    : m_value(makeUnexpected(type))
+{
+}
+
+template<typename ReturnType> inline CallbackResult<ReturnType>::CallbackResult(ReturnType&& returnValue)
+    : m_value(WTFMove(returnValue))
+{
+}
+
+template<typename ReturnType> inline CallbackResultType CallbackResult<ReturnType>::type() const
+{
+    return m_value.has_value() ? CallbackResultType::Success : m_value.error();
+}
+
+template<typename ReturnType> inline auto CallbackResult<ReturnType>::releaseReturnValue() -> ReturnType&&
+{
+    ASSERT(m_value.has_value());
+    return WTFMove(m_value.value());
+}
+
+
+// Void specialization
+
+inline CallbackResult<void>::CallbackResult(CallbackResultType type)
+    : m_type(type)
+{
+}
+
+inline CallbackResultType CallbackResult<void>::type() const
+{
+    return m_type;
+}
+
+}