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/*
* Copyright (c) 2022, David Tuin <davidot@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/TypeCasts.h>
#include <LibJS/Runtime/VM.h>
#include <LibJS/Runtime/Value.h>
#include <LibWeb/HTML/Scripting/ExceptionReporter.h>
namespace Web::HTML {
// https://html.spec.whatwg.org/#report-the-exception
void report_exception(JS::Completion const& throw_completion)
{
// FIXME: This is just old code, and does not strictly follow the spec of report an exception.
// FIXME: We should probably also report these exceptions to the JS console.
VERIFY(throw_completion.type() == JS::Completion::Type::Throw);
VERIFY(throw_completion.value().has_value());
auto thrown_value = *throw_completion.value();
if (thrown_value.is_object()) {
auto& object = thrown_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 {}", thrown_value);
} else {
dbgln("\033[31;1mUnhandled JavaScript exception:\033[0m [{}] {}", name, message);
}
if (is<JS::Error>(object)) {
auto const& error_value = static_cast<JS::Error const&>(object);
for (auto const& traceback_frame : error_value.traceback()) {
auto const& function_name = traceback_frame.function_name;
auto const& source_range = traceback_frame.source_range;
dbgln(" {} at {}:{}:{}", function_name, source_range.filename, source_range.start.line, source_range.start.column);
}
}
} else {
dbgln("\033[31;1mUnhandled JavaScript exception:\033[0m {}", thrown_value);
}
}
}
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