1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* Copyright (C) 2016-2021 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 "IDLTypes.h"
#include "JSDOMConvertBase.h"
#include <wtf/FixedVector.h>
namespace WebCore {
template<typename IDL>
struct VariadicConverter {
using Item = typename IDL::ImplementationType;
static std::optional<Item> convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
{
auto& vm = JSC::getVM(&lexicalGlobalObject);
auto scope = DECLARE_THROW_SCOPE(vm);
auto result = WebCore::convert<IDL>(lexicalGlobalObject, value);
if (UNLIKELY(result.hasException(scope)))
return std::nullopt;
return result.releaseReturnValue();
}
};
template<typename IDL> using VariadicItem = typename VariadicConverter<IDL>::Item;
template<typename IDL> using VariadicArguments = FixedVector<VariadicItem<IDL>>;
template<typename IDL>
VariadicArguments<IDL> convertVariadicArguments(JSC::JSGlobalObject& lexicalGlobalObject, JSC::CallFrame& callFrame, size_t startIndex)
{
auto& vm = JSC::getVM(&lexicalGlobalObject);
auto scope = DECLARE_THROW_SCOPE(vm);
size_t length = callFrame.argumentCount();
if (startIndex >= length)
return { };
auto result = VariadicArguments<IDL>::createWithSizeFromGenerator(length - startIndex, [&](size_t i) -> std::optional<VariadicItem<IDL>> {
auto result = VariadicConverter<IDL>::convert(lexicalGlobalObject, callFrame.uncheckedArgument(i + startIndex));
RETURN_IF_EXCEPTION(scope, std::nullopt);
return result;
});
RETURN_IF_EXCEPTION(scope, VariadicArguments<IDL> { });
return result;
}
} // namespace WebCore
|
