com.google.protobuf.ExtensionSchema Maven / Gradle / Ivy

Go to download
// 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;
import java.util.Map;

abstract class ExtensionSchema> {

  /** Returns true for messages that support extensions. */
  abstract boolean hasExtensions(MessageLite prototype);

  /** Returns the extension {@link FieldSet} for the message instance. */
  abstract FieldSet getExtensions(Object message);

  /** Replaces the extension {@link FieldSet} for the message instance. */
  abstract void setExtensions(Object message, FieldSet extensions);

  /** Returns the extension {@link FieldSet} and ensures it's mutable. */
  abstract FieldSet getMutableExtensions(Object message);

  /** Marks the extension {@link FieldSet} as immutable. */
  abstract void makeImmutable(Object message);

  /**
   * Parses an extension. Returns the passed-in unknownFields parameter if no unknown enum value is
   * found or a modified unknownFields (a new instance if the passed-in unknownFields is null)
   * containing unknown enum values found while parsing.
   *
   * @param  The type used to store unknown fields. It's either UnknownFieldSet in full runtime
   *     or UnknownFieldSetLite in lite runtime.
   */
  abstract  UB parseExtension(
      Object containerMessage,
      Reader reader,
      Object extension,
      ExtensionRegistryLite extensionRegistry,
      FieldSet extensions,
      UB unknownFields,
      UnknownFieldSchema unknownFieldSchema)
      throws IOException;

  /** Gets the field number of an extension entry. */
  abstract int extensionNumber(Map.Entry extension);

  /** Serializes one extension entry. */
  abstract void serializeExtension(Writer writer, Map.Entry extension) throws IOException;

  /** Finds an extension by field number. */
  abstract Object findExtensionByNumber(
      ExtensionRegistryLite extensionRegistry, MessageLite defaultInstance, int number);

  /** Parses a length-prefixed MessageSet item from the reader. */
  abstract void parseLengthPrefixedMessageSetItem(
      Reader reader,
      Object extension,
      ExtensionRegistryLite extensionRegistry,
      FieldSet extensions)
      throws IOException;

  /**
   * Parses the entire content of a {@link ByteString} as one MessageSet item. Unlike {@link
   * #parseLengthPrefixedMessageSetItem}, there isn't a length-prefix.
   */
  abstract void parseMessageSetItem(
      ByteString data,
      Object extension,
      ExtensionRegistryLite extensionRegistry,
      FieldSet extensions)
      throws IOException;
}