Source/JavaScriptCore/runtime/AggregateError.cpp

/*
 * Copyright (C) 2020 Apple Inc. 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. AND ITS 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 APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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#include "config.h"
#include "AggregateError.h"

#include "ExceptionScope.h"
#include "IteratorOperations.h"
#include "JSCJSValueInlines.h"
#include "JSGlobalObjectInlines.h"

namespace JSC {

const ClassInfo AggregateError::s_info = { "AggregateError", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(AggregateError) };

AggregateError::AggregateError(VM& vm, Structure* structure, const MarkedArgumentBuffer& errors)
    : Base(vm, structure)
    , m_errors(errors.size())
{
    for (size_t i = 0; i < errors.size(); ++i)
        m_errors[i].setWithoutWriteBarrier(errors.at(i));
}

void AggregateError::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
    auto* thisObject = jsCast<AggregateError*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
    Base::visitChildren(thisObject, visitor);

    visitor.appendValues(thisObject->m_errors.data(), thisObject->m_errors.size());
}

AggregateError* AggregateError::create(JSGlobalObject* globalObject, VM& vm, Structure* structure, JSValue errors, JSValue message, SourceAppender appender, RuntimeType type, bool useCurrentFrame)
{
    auto scope = DECLARE_THROW_SCOPE(vm);

    String messageString;
    if (!message.isUndefined()) {
        messageString = message.toWTFString(globalObject);
        RETURN_IF_EXCEPTION(scope, nullptr);
    }

    MarkedArgumentBuffer errorsList;
    forEachInIterable(globalObject, errors, [&] (VM&, JSGlobalObject*, JSValue nextValue) {
        errorsList.append(nextValue);
        if (UNLIKELY(errorsList.hasOverflowed()))
            throwOutOfMemoryError(globalObject, scope);
    });
    RETURN_IF_EXCEPTION(scope, nullptr);

    RELEASE_AND_RETURN(scope, create(globalObject, vm, structure, errorsList, messageString, appender, type, useCurrentFrame));
}

} // namespace JSC