ladybird/Userland/Libraries/LibWeb/HTML/Scripting/ExceptionReporter.cpp
Timothy Flynn 88814acbd3 LibJS+Everywhere: Convert JS::Error to String
This includes an Error::create overload to create an Error from a UTF-8
StringView. If creating a String from that view fails, the factory will
return an OOM InternalError instead. VM::throw_completion can also make
use of this overload via its perfect forwarding.
2023-02-17 09:14:23 -05:00

59 lines
2.6 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>
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.
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)) {
auto const& error_value = static_cast<JS::Error const&>(object);
for (auto& traceback_frame : error_value.traceback()) {
auto& function_name = traceback_frame.function_name;
auto& source_range = traceback_frame.source_range;
dbgln(" {} at {}:{}:{}", function_name, source_range.filename(), source_range.start.line, source_range.start.column);
}
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().release_value_but_fixme_should_propagate_errors()), 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);
}
}