1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "IDLTypes.h"
29#include "JSDOMConvertBase.h"
30#include <JavaScriptCore/Error.h>
31
32namespace WebCore {
33
34template<typename ImplementationClass> struct JSDOMWrapperConverterTraits;
35
36template<typename T, typename Enable = void>
37struct JSToWrappedOverloader {
38 using ReturnType = typename JSDOMWrapperConverterTraits<T>::ToWrappedReturnType;
39 using WrapperType = typename JSDOMWrapperConverterTraits<T>::WrapperClass;
40
41 static ReturnType toWrapped(JSC::ExecState& state, JSC::JSValue value)
42 {
43 return WrapperType::toWrapped(state.vm(), value);
44 }
45};
46
47template<typename T>
48struct JSToWrappedOverloader<T, typename std::enable_if<JSDOMWrapperConverterTraits<T>::needsState>::type> {
49 using ReturnType = typename JSDOMWrapperConverterTraits<T>::ToWrappedReturnType;
50 using WrapperType = typename JSDOMWrapperConverterTraits<T>::WrapperClass;
51
52 static ReturnType toWrapped(JSC::ExecState& state, JSC::JSValue value)
53 {
54 return WrapperType::toWrapped(state, value);
55 }
56};
57
58template<typename T> struct Converter<IDLInterface<T>> : DefaultConverter<IDLInterface<T>> {
59 using ReturnType = typename JSDOMWrapperConverterTraits<T>::ToWrappedReturnType;
60 using WrapperType = typename JSDOMWrapperConverterTraits<T>::WrapperClass;
61
62 template<typename ExceptionThrower = DefaultExceptionThrower>
63 static ReturnType convert(JSC::ExecState& state, JSC::JSValue value, ExceptionThrower&& exceptionThrower = ExceptionThrower())
64 {
65 auto& vm = state.vm();
66 auto scope = DECLARE_THROW_SCOPE(vm);
67 ReturnType object = JSToWrappedOverloader<T>::toWrapped(state, value);
68 if (UNLIKELY(!object))
69 exceptionThrower(state, scope);
70 return object;
71 }
72};
73
74template<typename T> struct JSConverter<IDLInterface<T>> {
75 static constexpr bool needsState = true;
76 static constexpr bool needsGlobalObject = true;
77
78 template <typename U>
79 static JSC::JSValue convert(JSC::ExecState& state, JSDOMGlobalObject& globalObject, const U& value)
80 {
81 return toJS(&state, &globalObject, Detail::getPtrOrRef(value));
82 }
83
84 template<typename U>
85 static JSC::JSValue convertNewlyCreated(JSC::ExecState& state, JSDOMGlobalObject& globalObject, U&& value)
86 {
87 return toJSNewlyCreated(&state, &globalObject, std::forward<U>(value));
88 }
89};
90
91template<typename T> struct VariadicConverter<IDLInterface<T>> {
92 using Item = std::reference_wrapper<T>;
93
94 static Optional<Item> convert(JSC::ExecState& state, JSC::JSValue value)
95 {
96 auto* result = Converter<IDLInterface<T>>::convert(state, value);
97 if (!result)
98 return WTF::nullopt;
99 return Optional<Item> { *result };
100 }
101};
102
103} // namespace WebCore
104