// Protocol Buffers - Google's data interchange format
// Copyright 2013 Google Inc.  All rights reserved.
// http://code.google.com/p/protobuf/
//
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package com.google.protobuf.nano;

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 InvalidProtocolBufferNanoException extends IOException {
  private static final long serialVersionUID = -1616151763072450476L;

  public InvalidProtocolBufferNanoException(final String description) {
    super(description);
  }

  static InvalidProtocolBufferNanoException truncatedMessage() {
    return new InvalidProtocolBufferNanoException(
      "While parsing a protocol message, the input ended unexpectedly " +
      "in the middle of a field.  This could mean either than the " +
      "input has been truncated or that an embedded message " +
      "misreported its own length.");
  }

  static InvalidProtocolBufferNanoException negativeSize() {
    return new InvalidProtocolBufferNanoException(
      "CodedInputStream encountered an embedded string or message " +
      "which claimed to have negative size.");
  }

  static InvalidProtocolBufferNanoException malformedVarint() {
    return new InvalidProtocolBufferNanoException(
      "CodedInputStream encountered a malformed varint.");
  }

  static InvalidProtocolBufferNanoException invalidTag() {
    return new InvalidProtocolBufferNanoException(
      "Protocol message contained an invalid tag (zero).");
  }

  static InvalidProtocolBufferNanoException invalidEndTag() {
    return new InvalidProtocolBufferNanoException(
      "Protocol message end-group tag did not match expected tag.");
  }

  static InvalidProtocolBufferNanoException invalidWireType() {
    return new InvalidProtocolBufferNanoException(
      "Protocol message tag had invalid wire type.");
  }

  static InvalidProtocolBufferNanoException recursionLimitExceeded() {
    return new InvalidProtocolBufferNanoException(
      "Protocol message had too many levels of nesting.  May be malicious.  " +
      "Use CodedInputStream.setRecursionLimit() to increase the depth limit.");
  }

  static InvalidProtocolBufferNanoException sizeLimitExceeded() {
    return new InvalidProtocolBufferNanoException(
      "Protocol message was too large.  May be malicious.  " +
      "Use CodedInputStream.setSizeLimit() to increase the size limit.");
  }
}