ladybird/Libraries/LibWeb/HTML/Scripting/ExceptionReporter.cpp

63 lines
3.1 KiB
C++

/*
* Copyright (c) 2022, David Tuin <davidot@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/TypeCasts.h>
#include <LibJS/Console.h>
#include <LibJS/Runtime/ConsoleObject.h>
#include <LibJS/Runtime/VM.h>
#include <LibJS/Runtime/Value.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/HTML/Scripting/ExceptionReporter.h>
#include <LibWeb/WebIDL/DOMException.h>
namespace Web::HTML {
void report_exception_to_console(JS::Value value, JS::Realm& realm, ErrorInPromise error_in_promise)
{
auto& console = realm.intrinsics().console_object()->console();
if (value.is_object()) {
auto& object = value.as_object();
auto& vm = object.vm();
auto name = object.get_without_side_effects(vm.names.name).value_or(JS::js_undefined());
auto message = object.get_without_side_effects(vm.names.message).value_or(JS::js_undefined());
if (name.is_accessor() || message.is_accessor()) {
// The result is not going to be useful, let's just print the value. This affects DOMExceptions, for example.
if (is<WebIDL::DOMException>(object)) {
auto const& exception = static_cast<WebIDL::DOMException const&>(object);
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m {}: {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", exception.name(), exception.message());
} else {
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", JS::Value(&object));
}
} else {
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m [{}] {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", name, message);
}
if (is<JS::Error>(object)) {
// FIXME: We should be doing this for DOMException as well
// https://webidl.spec.whatwg.org/#js-DOMException-specialness
// "Additionally, if an implementation gives native Error objects special powers or nonstandard properties (such as a stack property), it should also expose those on DOMException objects."
auto const& error_value = static_cast<JS::Error const&>(object);
dbgln("{}", error_value.stack_string(JS::CompactTraceback::Yes));
console.report_exception(error_value, error_in_promise == ErrorInPromise::Yes);
return;
}
} else {
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", value);
}
console.report_exception(*JS::Error::create(realm, value.to_string_without_side_effects()), error_in_promise == ErrorInPromise::Yes);
}
// https://html.spec.whatwg.org/#report-the-exception
void report_exception(JS::Completion const& throw_completion, JS::Realm& realm)
{
VERIFY(throw_completion.type() == JS::Completion::Type::Throw);
VERIFY(throw_completion.value().has_value());
report_exception_to_console(*throw_completion.value(), realm, ErrorInPromise::No);
}
}