| // Protocol Buffers - Google's data interchange format |
| // Copyright 2008 Google Inc. All rights reserved. |
| // |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file or at |
| // https://developers.google.com/open-source/licenses/bsd |
| |
| package com.google.protobuf; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| |
| @CheckReturnValue |
| abstract class ExtensionSchema<T extends FieldSet.FieldDescriptorLite<T>> { |
| |
| /** Returns true for messages that support extensions. */ |
| abstract boolean hasExtensions(MessageLite prototype); |
| |
| /** Returns the extension {@link FieldSet} for the message instance. */ |
| abstract FieldSet<T> getExtensions(Object message); |
| |
| /** Replaces the extension {@link FieldSet} for the message instance. */ |
| abstract void setExtensions(Object message, FieldSet<T> extensions); |
| |
| /** Returns the extension {@link FieldSet} and ensures it's mutable. */ |
| abstract FieldSet<T> 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 <UT> The type used to store unknown fields. It's either UnknownFieldSet in full runtime |
| * or UnknownFieldSetLite in lite runtime. |
| */ |
| abstract <UT, UB> UB parseExtension( |
| Object containerMessage, |
| Reader reader, |
| Object extension, |
| ExtensionRegistryLite extensionRegistry, |
| FieldSet<T> extensions, |
| UB unknownFields, |
| UnknownFieldSchema<UT, UB> 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<T> 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<T> extensions) |
| throws IOException; |
| } |