webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 183 insertions, 0 deletions

diff --git a/Source/WebCore/bindings/js/JSDOMConvertBase.h b/Source/WebCore/bindings/js/JSDOMConvertBase.h
new file mode 100644
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+++ b/Source/WebCore/bindings/js/JSDOMConvertBase.h
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2016 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 "JSDOMExceptionHandling.h"
+
+namespace WebCore {
+
+// Conversion from JSValue -> Implementation
+template<typename T> struct Converter;
+
+
+struct DefaultExceptionThrower {
+    void operator()(JSC::ExecState& state, JSC::ThrowScope& scope)
+    {
+        throwTypeError(&state, scope);
+    }
+};
+
+template<typename T> typename Converter<T>::ReturnType convert(JSC::ExecState&, JSC::JSValue);
+template<typename T> typename Converter<T>::ReturnType convert(JSC::ExecState&, JSC::JSValue, JSC::JSObject&);
+template<typename T> typename Converter<T>::ReturnType convert(JSC::ExecState&, JSC::JSValue, JSDOMGlobalObject&);
+template<typename T, typename ExceptionThrower> typename Converter<T>::ReturnType convert(JSC::ExecState&, JSC::JSValue, ExceptionThrower&&);
+template<typename T, typename ExceptionThrower> typename Converter<T>::ReturnType convert(JSC::ExecState&, JSC::JSValue, JSC::JSObject&, ExceptionThrower&&);
+template<typename T, typename ExceptionThrower> typename Converter<T>::ReturnType convert(JSC::ExecState&, JSC::JSValue, JSDOMGlobalObject&, ExceptionThrower&&);
+
+template<typename T> inline typename Converter<T>::ReturnType convert(JSC::ExecState& state, JSC::JSValue value)
+{
+    return Converter<T>::convert(state, value);
+}
+
+template<typename T> inline typename Converter<T>::ReturnType convert(JSC::ExecState& state, JSC::JSValue value, JSC::JSObject& thisObject)
+{
+    return Converter<T>::convert(state, value, thisObject);
+}
+
+template<typename T> inline typename Converter<T>::ReturnType convert(JSC::ExecState& state, JSC::JSValue value, JSDOMGlobalObject& globalObject)
+{
+    return Converter<T>::convert(state, value, globalObject);
+}
+
+template<typename T, typename ExceptionThrower> inline typename Converter<T>::ReturnType convert(JSC::ExecState& state, JSC::JSValue value, ExceptionThrower&& exceptionThrower)
+{
+    return Converter<T>::convert(state, value, std::forward<ExceptionThrower>(exceptionThrower));
+}
+
+template<typename T, typename ExceptionThrower> inline typename Converter<T>::ReturnType convert(JSC::ExecState& state, JSC::JSValue value, JSC::JSObject& thisObject, ExceptionThrower&& exceptionThrower)
+{
+    return Converter<T>::convert(state, value, thisObject, std::forward<ExceptionThrower>(exceptionThrower));
+}
+
+template<typename T, typename ExceptionThrower> inline typename Converter<T>::ReturnType convert(JSC::ExecState& state, JSC::JSValue value, JSDOMGlobalObject& globalObject, ExceptionThrower&& exceptionThrower)
+{
+    return Converter<T>::convert(state, value, globalObject, std::forward<ExceptionThrower>(exceptionThrower));
+}
+
+// Conversion from Implementation -> JSValue
+template<typename T> struct JSConverter;
+
+template<typename T, typename U> inline JSC::JSValue toJS(U&&);
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState&, U&&);
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState&, JSDOMGlobalObject&, U&&);
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState&, JSC::ThrowScope&, ExceptionOr<U>&&);
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState&, JSDOMGlobalObject&, JSC::ThrowScope&, ExceptionOr<U>&&);
+template<typename T, typename U> inline JSC::JSValue toJSNewlyCreated(JSC::ExecState&, JSDOMGlobalObject&, U&&);
+template<typename T, typename U> inline JSC::JSValue toJSNewlyCreated(JSC::ExecState&, JSDOMGlobalObject&, JSC::ThrowScope&, ExceptionOr<U>&&);
+
+template<typename T, bool needsState = JSConverter<T>::needsState, bool needsGlobalObject = JSConverter<T>::needsGlobalObject>
+struct JSConverterOverloader;
+
+template<typename T>
+struct JSConverterOverloader<T, true, true> {
+    template<typename U> static JSC::JSValue convert(JSC::ExecState& state, JSDOMGlobalObject& globalObject, U&& value)
+    {
+        return JSConverter<T>::convert(state, globalObject, std::forward<U>(value));
+    }
+};
+
+template<typename T>
+struct JSConverterOverloader<T, true, false> {
+    template<typename U> static JSC::JSValue convert(JSC::ExecState& state, U&& value)
+    {
+        return JSConverter<T>::convert(state, std::forward<U>(value));
+    }
+
+    template<typename U> static JSC::JSValue convert(JSC::ExecState& state, JSDOMGlobalObject&, U&& value)
+    {
+        return JSConverter<T>::convert(state, std::forward<U>(value));
+    }
+};
+
+template<typename T>
+struct JSConverterOverloader<T, false, false> {
+    template<typename U> static JSC::JSValue convert(JSC::ExecState&, U&& value)
+    {
+        return JSConverter<T>::convert(std::forward<U>(value));
+    }
+
+    template<typename U> static JSC::JSValue convert(JSC::ExecState&, JSDOMGlobalObject&, U&& value)
+    {
+        return JSConverter<T>::convert(std::forward<U>(value));
+    }
+};
+
+template<typename T, typename U> inline JSC::JSValue toJS(U&& value)
+{
+    return JSConverter<T>::convert(std::forward<U>(value));
+}
+
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState& state, U&& value)
+{
+    return JSConverterOverloader<T>::convert(state, std::forward<U>(value));
+}
+
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState& state, JSDOMGlobalObject& globalObject, U&& value)
+{
+    return JSConverterOverloader<T>::convert(state, globalObject, std::forward<U>(value));
+}
+
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState& state, JSC::ThrowScope& throwScope, ExceptionOr<U>&& value)
+{
+    if (UNLIKELY(value.hasException())) {
+        propagateException(state, throwScope, value.releaseException());
+        return { };
+    }
+
+    return toJS<T>(state, value.releaseReturnValue());
+}
+
+template<typename T, typename U> inline JSC::JSValue toJS(JSC::ExecState& state, JSDOMGlobalObject& globalObject, JSC::ThrowScope& throwScope, ExceptionOr<U>&& value)
+{
+    if (UNLIKELY(value.hasException())) {
+        propagateException(state, throwScope, value.releaseException());
+        return { };
+    }
+
+    return toJS<T>(state, globalObject, value.releaseReturnValue());
+}
+
+template<typename T, typename U> inline JSC::JSValue toJSNewlyCreated(JSC::ExecState& state, JSDOMGlobalObject& globalObject, U&& value)
+{
+    return JSConverter<T>::convertNewlyCreated(state, globalObject, std::forward<U>(value));
+}
+
+template<typename T, typename U> inline JSC::JSValue toJSNewlyCreated(JSC::ExecState& state, JSDOMGlobalObject& globalObject, JSC::ThrowScope& throwScope, ExceptionOr<U>&& value)
+{
+    if (UNLIKELY(value.hasException())) {
+        propagateException(state, throwScope, value.releaseException());
+        return { };
+    }
+
+    return toJSNewlyCreated<T>(state, globalObject, value.releaseReturnValue());
+}
+
+
+template<typename T> struct DefaultConverter {
+    using ReturnType = typename T::ImplementationType;
+};
+
+} // namespace WebCore