root/Source/bindings/v8/ExceptionState.cpp

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DEFINITIONS

This source file includes following definitions.
  1. clearException
  2. throwDOMException
  3. throwSecurityError
  4. setException
  5. throwException
  6. throwTypeError
  7. throwDOMException
  8. throwTypeError
  9. throwSecurityError
  10. throwDOMException
  11. throwTypeError
  12. throwSecurityError
  13. addExceptionContext

/*
 * Copyright (C) 2013 Google 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * 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
 * OWNER 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.
 */

#include "config.h"
#include "bindings/v8/ExceptionState.h"

#include "bindings/v8/ExceptionMessages.h"
#include "bindings/v8/V8ThrowException.h"
#include "core/dom/ExceptionCode.h"

namespace WebCore {

void ExceptionState::clearException()
{
    m_code = 0;
    m_exception.clear();
}

void ExceptionState::throwDOMException(const ExceptionCode& ec, const String& message)
{
    ASSERT(ec);
    ASSERT(m_isolate);

    // SecurityError is thrown via ::throwSecurityError, and _careful_ consideration must be given to the data exposed to JavaScript via the 'sanitizedMessage'.
    ASSERT(ec != SecurityError);

    m_code = ec;
    String processedMessage = addExceptionContext(message);
    m_message = processedMessage;
    setException(V8ThrowException::createDOMException(ec, processedMessage, m_creationContext, m_isolate));
}

void ExceptionState::throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage)
{
    ASSERT(m_isolate);
    m_code = SecurityError;
    String finalSanitized = addExceptionContext(sanitizedMessage);
    m_message = finalSanitized;
    String finalUnsanitized = addExceptionContext(unsanitizedMessage);

    setException(V8ThrowException::createDOMException(SecurityError, finalSanitized, finalUnsanitized, m_creationContext, m_isolate));
}

void ExceptionState::setException(v8::Handle<v8::Value> exception)
{
    // FIXME: Assert that exception is not empty?
    if (exception.IsEmpty()) {
        clearException();
        return;
    }

    m_exception.set(m_isolate, exception);
}

void ExceptionState::throwException()
{
    ASSERT(!m_exception.isEmpty());
    V8ThrowException::throwError(m_exception.newLocal(m_isolate), m_isolate);
}

void ExceptionState::throwTypeError(const String& message)
{
    ASSERT(m_isolate);
    m_code = TypeError;
    m_message = message;
    setException(V8ThrowException::createTypeError(addExceptionContext(message), m_isolate));
}

void NonThrowableExceptionState::throwDOMException(const ExceptionCode& ec, const String& message)
{
    ASSERT_NOT_REACHED();
    m_code = ec;
    m_message = message;
}

void NonThrowableExceptionState::throwTypeError(const String& message)
{
    ASSERT_NOT_REACHED();
    m_code = TypeError;
    m_message = message;
}

void NonThrowableExceptionState::throwSecurityError(const String& sanitizedMessage, const String&)
{
    ASSERT_NOT_REACHED();
    m_code = SecurityError;
    m_message = sanitizedMessage;
}

void TrackExceptionState::throwDOMException(const ExceptionCode& ec, const String& message)
{
    m_code = ec;
    m_message = message;
}

void TrackExceptionState::throwTypeError(const String& message)
{
    m_code = TypeError;
    m_message = message;
}

void TrackExceptionState::throwSecurityError(const String& sanitizedMessage, const String&)
{
    m_code = SecurityError;
    m_message = sanitizedMessage;
}

String ExceptionState::addExceptionContext(const String& message) const
{
    if (message.isEmpty())
        return message;

    String processedMessage = message;
    if (propertyName() && interfaceName() && m_context != UnknownContext) {
        if (m_context == DeletionContext)
            processedMessage = ExceptionMessages::failedToDelete(propertyName(), interfaceName(), message);
        else if (m_context == ExecutionContext)
            processedMessage = ExceptionMessages::failedToExecute(propertyName(), interfaceName(), message);
        else if (m_context == GetterContext)
            processedMessage = ExceptionMessages::failedToGet(propertyName(), interfaceName(), message);
        else if (m_context == SetterContext)
            processedMessage = ExceptionMessages::failedToSet(propertyName(), interfaceName(), message);
    } else if (!propertyName() && interfaceName()) {
        if (m_context == ConstructionContext)
            processedMessage = ExceptionMessages::failedToConstruct(interfaceName(), message);
        else if (m_context == EnumerationContext)
            processedMessage = ExceptionMessages::failedToEnumerate(interfaceName(), message);
        else if (m_context == IndexedDeletionContext)
            processedMessage = ExceptionMessages::failedToDeleteIndexed(interfaceName(), message);
        else if (m_context == IndexedGetterContext)
            processedMessage = ExceptionMessages::failedToGetIndexed(interfaceName(), message);
        else if (m_context == IndexedSetterContext)
            processedMessage = ExceptionMessages::failedToSetIndexed(interfaceName(), message);
    }
    return processedMessage;
}

} // namespace WebCore

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