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InspectorProtocolTypes.h
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89 lines (75 loc) · 3.4 KB
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/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
* Copyright (C) 2011 The Chromium Authors. 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. ``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
* 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/Assertions.h>
#include <wtf/Expected.h>
#include <wtf/JSONValues.h>
#include <wtf/text/WTFString.h>
namespace Inspector {
namespace Protocol {
using ErrorString = String;
template <typename T>
using ErrorStringOr = Expected<T, ErrorString>;
template<typename> struct BindingTraits;
template<JSON::Value::Type type> struct PrimitiveBindingTraits {
static void assertValueHasExpectedType(JSON::Value* value)
{
ASSERT_UNUSED(value, value);
ASSERT_UNUSED(value, value->type() == type);
}
};
template<typename T> struct BindingTraits<JSON::ArrayOf<T>> {
static Ref<JSON::ArrayOf<T>> runtimeCast(Ref<JSON::Value>&& value)
{
auto array = value->asArray();
BindingTraits<JSON::ArrayOf<T>>::assertValueHasExpectedType(array.get());
static_assert(sizeof(JSON::ArrayOf<T>) == sizeof(JSON::Array), "type cast problem");
return unsafeRefDowncast<JSON::ArrayOf<T>>(upcast<JSON::ArrayBase>(array.releaseNonNull()));
}
static void assertValueHasExpectedType(JSON::Value* value)
{
ASSERT_UNUSED(value, value);
#if ASSERT_ENABLED
auto array = value->asArray();
ASSERT(array);
for (unsigned i = 0; i < array->length(); i++)
BindingTraits<T>::assertValueHasExpectedType(array->get(i).ptr());
#endif
}
};
template<> struct BindingTraits<JSON::Value> {
static void assertValueHasExpectedType(JSON::Value*)
{
}
};
template<> struct BindingTraits<JSON::Array> : PrimitiveBindingTraits<JSON::Value::Type::Array> { };
template<> struct BindingTraits<JSON::Object> : PrimitiveBindingTraits<JSON::Value::Type::Object> { };
template<> struct BindingTraits<String> : PrimitiveBindingTraits<JSON::Value::Type::String> { };
template<> struct BindingTraits<bool> : PrimitiveBindingTraits<JSON::Value::Type::Boolean> { };
template<> struct BindingTraits<double> : PrimitiveBindingTraits<JSON::Value::Type::Double> { };
template<> struct BindingTraits<int> : PrimitiveBindingTraits<JSON::Value::Type::Integer> { };
}
} // namespace Inspector