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LibWeb: Move ExceptionOr bindings utils into own header

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This commit is contained in:
Linus Groh 2021-02-20 13:06:03 +01:00 • committed by Andreas Kling
parent 5e07c27e25
commit a1a625b565
2 changed files with 81 additions and 52 deletions
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80
Userland/Libraries/LibWeb/Bindings/ExceptionOrUtils.h Normal file
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@ -0,0 +1,80 @@
/*
* Copyright (c) 2021, the SerenityOS developers.
* 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER 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 <AK/StdLibExtras.h>
#include <LibJS/Runtime/VM.h>
#include <LibWeb/Bindings/DOMExceptionWrapper.h>
#include <LibWeb/DOM/ExceptionOr.h>
namespace Web::Bindings {
template<typename>
struct IsExceptionOr : AK::FalseType {
};
template<typename T>
struct IsExceptionOr<DOM::ExceptionOr<T>> : AK::TrueType {
};
template<typename T>
ALWAYS_INLINE bool throw_dom_exception(JS::VM& vm, JS::GlobalObject& global_object, DOM::ExceptionOr<T>& result)
{
if (result.is_exception()) {
vm.throw_exception(global_object, DOMExceptionWrapper::create(global_object, const_cast<DOM::DOMException&>(result.exception())));
return true;
}
return false;
}
template<typename F, typename T = decltype(declval<F>()()), typename Ret = typename Conditional<!IsExceptionOr<T>::value && !IsVoid<T>::value, T, JS::Value>::Type>
Ret throw_dom_exception_if_needed(auto&& vm, auto&& global_object, F&& fn)
{
if constexpr (IsExceptionOr<T>::value) {
auto&& result = fn();
if (throw_dom_exception(vm, global_object, result))
return JS::Value();
if constexpr (requires(T v) { v.value(); })
return result.value();
return JS::Value();
} else if constexpr (IsVoid<T>::value) {
fn();
return JS::js_undefined();
} else {
return fn();
}
}
template<typename T>
bool should_return_empty(T&& value)
{
if constexpr (IsSame<JS::Value, T>::value)
return value.is_empty();
return false;
}
}

53
Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp
View file

@ -1091,7 +1091,6 @@ void generate_prototype_implementation(const IDL::Interface& interface)
generator.append(R"~~~(
#include <AK/Function.h>
#include <AK/StdLibExtras.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/Function.h>
@ -1101,12 +1100,12 @@ void generate_prototype_implementation(const IDL::Interface& interface)
#include <LibWeb/Bindings/@wrapper_class@.h>
#include <LibWeb/Bindings/CanvasRenderingContext2DWrapper.h>
#include <LibWeb/Bindings/CommentWrapper.h>
#include <LibWeb/Bindings/DOMExceptionWrapper.h>
#include <LibWeb/Bindings/DOMImplementationWrapper.h>
#include <LibWeb/Bindings/DocumentFragmentWrapper.h>
#include <LibWeb/Bindings/DocumentTypeWrapper.h>
#include <LibWeb/Bindings/DocumentWrapper.h>
#include <LibWeb/Bindings/EventTargetWrapperFactory.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/HTMLCanvasElementWrapper.h>
#include <LibWeb/Bindings/HTMLHeadElementWrapper.h>
#include <LibWeb/Bindings/HTMLImageElementWrapper.h>
@ -1117,7 +1116,6 @@ void generate_prototype_implementation(const IDL::Interface& interface)
#include <LibWeb/Bindings/WindowObject.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOM/EventListener.h>
#include <LibWeb/DOM/ExceptionOr.h>
#include <LibWeb/DOM/Window.h>
#include <LibWeb/HTML/EventHandler.h>
#include <LibWeb/HTML/HTMLElement.h>
@ -1410,55 +1408,6 @@ JS_DEFINE_NATIVE_SETTER(@prototype_class@::@attribute.setter_callback@)
function_generator.set("function.name:snakecase", snake_name(function.name));
function_generator.append(R"~~~(
#ifndef EXCEPTION_OR_TEMPLATES
#define EXCEPTION_OR_TEMPLATES
template<typename>
struct IsExceptionOr : AK::FalseType {
};
template<typename T>
struct IsExceptionOr<ExceptionOr<T>> : AK::TrueType {
};
template<typename T>
ALWAYS_INLINE bool throw_dom_exception(JS::VM& vm, JS::GlobalObject& global_object, ExceptionOr<T>& result)
{
if (result.is_exception()) {
vm.throw_exception(global_object, DOMExceptionWrapper::create(global_object, const_cast<DOM::DOMException&>(result.exception())));
return true;
}
return false;
}
template<typename F, typename T = decltype(declval<F>()()), typename Ret = typename Conditional<!IsExceptionOr<T>::value && !IsVoid<T>::value, T, JS::Value>::Type>
Ret throw_dom_exception_if_needed(auto&& vm, auto&& global_object, F&& fn) {
if constexpr (IsExceptionOr<T>::value) {
auto&& result = fn();
if (throw_dom_exception(vm, global_object, result))
return JS::Value();
if constexpr (requires(T v) { v.value(); })
return result.value();
return JS::Value();
} else if constexpr (IsVoid<T>::value) {
fn();
return JS::js_undefined();
} else {
return fn();
}
}
template <typename T>
bool should_return_empty(T&& value)
{
if constexpr (IsSame<JS::Value, T>::value)
return value.is_empty();
return false;
}
#endif
JS_DEFINE_NATIVE_FUNCTION(@prototype_class@::@function.name:snakecase@)
{
auto* impl = impl_from(vm, global_object);