content: // Protocol Buffers - Google's data interchange format
  // Copyright 2008 Google Inc.  All rights reserved.
  // https://developers.google.com/protocol-buffers/
  //
  // 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.
  
  package com.google.protobuf;
  
  import java.io.IOException;
  
  /**
   * Thrown when a protocol message being parsed is invalid in some way, e.g. it contains a malformed
   * varint or a negative byte length.
   *
   * @author kenton@google.com Kenton Varda
   */
  public class InvalidProtocolBufferException extends IOException {
    private static final long serialVersionUID = -1616151763072450476L;
    private MessageLite unfinishedMessage = null;
  
    public InvalidProtocolBufferException(final String description) {
      super(description);
    }
  
    public InvalidProtocolBufferException(IOException e) {
      super(e.getMessage(), e);
    }
  
    public InvalidProtocolBufferException(final String description, IOException e) {
      super(description, e);
    }
  
    /**
     * Attaches an unfinished message to the exception to support best-effort parsing in {@code
     * Parser} interface.
     *
     * @return this
     */
    public InvalidProtocolBufferException setUnfinishedMessage(MessageLite unfinishedMessage) {
      this.unfinishedMessage = unfinishedMessage;
      return this;
    }
  
    /**
     * Returns the unfinished message attached to the exception, or null if no message is attached.
     */
    public MessageLite getUnfinishedMessage() {
      return unfinishedMessage;
    }
  
    /**
     * Unwraps the underlying {@link IOException} if this exception was caused by an I/O problem.
     * Otherwise, returns {@code this}.
     */
    public IOException unwrapIOException() {
      return getCause() instanceof IOException ? (IOException) getCause() : this;
    }
  
    static InvalidProtocolBufferException truncatedMessage() {
      return new InvalidProtocolBufferException(
          "While parsing a protocol message, the input ended unexpectedly "
              + "in the middle of a field.  This could mean either that the "
              + "input has been truncated or that an embedded message "
              + "misreported its own length.");
    }
  
    static InvalidProtocolBufferException negativeSize() {
      return new InvalidProtocolBufferException(
          "CodedInputStream encountered an embedded string or message "
              + "which claimed to have negative size.");
    }
  
    static InvalidProtocolBufferException malformedVarint() {
      return new InvalidProtocolBufferException("CodedInputStream encountered a malformed varint.");
    }
  
    static InvalidProtocolBufferException invalidTag() {
      return new InvalidProtocolBufferException("Protocol message contained an invalid tag (zero).");
    }
  
    static InvalidProtocolBufferException invalidEndTag() {
      return new InvalidProtocolBufferException(
          "Protocol message end-group tag did not match expected tag.");
    }
  
    static InvalidWireTypeException invalidWireType() {
      return new InvalidWireTypeException("Protocol message tag had invalid wire type.");
    }
  
    /** Exception indicating that and unexpected wire type was encountered for a field. */
    @ExperimentalApi
    public static class InvalidWireTypeException extends InvalidProtocolBufferException {
      private static final long serialVersionUID = 3283890091615336259L;
  
      public InvalidWireTypeException(String description) {
        super(description);
      }
    }
  
    static InvalidProtocolBufferException recursionLimitExceeded() {
      return new InvalidProtocolBufferException(
          "Protocol message had too many levels of nesting.  May be malicious.  "
              + "Use CodedInputStream.setRecursionLimit() to increase the depth limit.");
    }
  
    static InvalidProtocolBufferException sizeLimitExceeded() {
      return new InvalidProtocolBufferException(
          "Protocol message was too large.  May be malicious.  "
              + "Use CodedInputStream.setSizeLimit() to increase the size limit.");
    }
  
    static InvalidProtocolBufferException parseFailure() {
      return new InvalidProtocolBufferException("Failed to parse the message.");
    }
  
    static InvalidProtocolBufferException invalidUtf8() {
      return new InvalidProtocolBufferException("Protocol message had invalid UTF-8.");
    }
  }
  