Update //third_party/protobuf to version 3.

third_party/protobuf/java/src/main/java/com/google/protobuf/Message.java

Index: third_party/protobuf/java/src/main/java/com/google/protobuf/Message.java
diff --git a/third_party/protobuf/java/src/main/java/com/google/protobuf/Message.java b/third_party/protobuf/java/src/main/java/com/google/protobuf/Message.java
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+// 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.
+
+// TODO(kenton):  Use generics?  E.g. Builder<BuilderType extends Builder>, then
+//   mergeFrom*() could return BuilderType for better type-safety.
+
+package com.google.protobuf;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Map;
+
+/**
+ * Abstract interface implemented by Protocol Message objects.
+ * <p>
+ * See also {@link MessageLite}, which defines most of the methods that typical
+ * users care about.  {@link Message} adds to it methods that are not available
+ * in the "lite" runtime.  The biggest added features are introspection and
+ * reflection -- i.e., getting descriptors for the message type and accessing
+ * the field values dynamically.
+ *
+ * @author kenton@google.com Kenton Varda
+ */
+public interface Message extends MessageLite, MessageOrBuilder {
+
+  // (From MessageLite, re-declared here only for return type covariance.)
+  Parser<? extends Message> getParserForType();
+
+
+  // -----------------------------------------------------------------
+  // Comparison and hashing
+
+  /**
+   * Compares the specified object with this message for equality.  Returns
+   * {@code true} if the given object is a message of the same type (as
+   * defined by {@code getDescriptorForType()}) and has identical values for
+   * all of its fields.  Subclasses must implement this; inheriting
+   * {@code Object.equals()} is incorrect.
+   *
+   * @param other object to be compared for equality with this message
+   * @return {@code true} if the specified object is equal to this message
+   */
+  @Override
+  boolean equals(Object other);
+
+  /**
+   * Returns the hash code value for this message.  The hash code of a message
+   * should mix the message's type (object identity of the descriptor) with its
+   * contents (known and unknown field values).  Subclasses must implement this;
+   * inheriting {@code Object.hashCode()} is incorrect.
+   *
+   * @return the hash code value for this message
+   * @see Map#hashCode()
+   */
+  @Override
+  int hashCode();
+
+  // -----------------------------------------------------------------
+  // Convenience methods.
+
+  /**
+   * Converts the message to a string in protocol buffer text format. This is
+   * just a trivial wrapper around {@link
+   * TextFormat#printToString(MessageOrBuilder)}.
+   */
+  @Override
+  String toString();
+
+  // =================================================================
+  // Builders
+
+  // (From MessageLite, re-declared here only for return type covariance.)
+  Builder newBuilderForType();
+  Builder toBuilder();
+
+  /**
+   * Abstract interface implemented by Protocol Message builders.
+   */
+  interface Builder extends MessageLite.Builder, MessageOrBuilder {
+    // (From MessageLite.Builder, re-declared here only for return type
+    // covariance.)
+    Builder clear();
+
+    /**
+     * Merge {@code other} into the message being built.  {@code other} must
+     * have the exact same type as {@code this} (i.e.
+     * {@code getDescriptorForType() == other.getDescriptorForType()}).
+     *
+     * Merging occurs as follows.  For each field:<br>
+     * * For singular primitive fields, if the field is set in {@code other},
+     *   then {@code other}'s value overwrites the value in this message.<br>
+     * * For singular message fields, if the field is set in {@code other},
+     *   it is merged into the corresponding sub-message of this message
+     *   using the same merging rules.<br>
+     * * For repeated fields, the elements in {@code other} are concatenated
+     *   with the elements in this message.
+     * * For oneof groups, if the other message has one of the fields set,
+     *   the group of this message is cleared and replaced by the field
+     *   of the other message, so that the oneof constraint is preserved.
+     *
+     * This is equivalent to the {@code Message::MergeFrom} method in C++.
+     */
+    Builder mergeFrom(Message other);
+
+    // (From MessageLite.Builder, re-declared here only for return type
+    // covariance.)
+    Message build();
+    Message buildPartial();
+    Builder clone();
+    Builder mergeFrom(CodedInputStream input) throws IOException;
+    Builder mergeFrom(CodedInputStream input,
+                      ExtensionRegistryLite extensionRegistry)
+                      throws IOException;
+
+    /**
+     * Get the message's type's descriptor.
+     * See {@link Message#getDescriptorForType()}.
+     */
+    Descriptors.Descriptor getDescriptorForType();
+
+    /**
+     * Create a Builder for messages of the appropriate type for the given
+     * field.  Messages built with this can then be passed to setField(),
+     * setRepeatedField(), or addRepeatedField().
+     */
+    Builder newBuilderForField(Descriptors.FieldDescriptor field);
+
+    /**
+     * Get a nested builder instance for the given field.
+     * <p>
+     * Normally, we hold a reference to the immutable message object for the
+     * message type field. Some implementations(the generated message builders),
+     * however, can also hold a reference to the builder object (a nested
+     * builder) for the field.
+     * <p>
+     * If the field is already backed up by a nested builder, the nested builder
+     * will be returned. Otherwise, a new field builder will be created and
+     * returned. The original message field (if exist) will be merged into the
+     * field builder, which will then be nested into its parent builder.
+     * <p>
+     * NOTE: implementations that do not support nested builders will throw
+     * <code>UnsupportedOperationException</code>.
+     */
+    Builder getFieldBuilder(Descriptors.FieldDescriptor field);
+
+    /**
+     * Get a nested builder instance for the given repeated field instance.
+     * <p>
+     * Normally, we hold a reference to the immutable message object for the
+     * message type field. Some implementations(the generated message builders),
+     * however, can also hold a reference to the builder object (a nested
+     * builder) for the field.
+     * <p>
+     * If the field is already backed up by a nested builder, the nested builder
+     * will be returned. Otherwise, a new field builder will be created and
+     * returned. The original message field (if exist) will be merged into the
+     * field builder, which will then be nested into its parent builder.
+     * <p>
+     * NOTE: implementations that do not support nested builders will throw
+     * <code>UnsupportedOperationException</code>.
+     */
+    Builder getRepeatedFieldBuilder(Descriptors.FieldDescriptor field,
+                                    int index);
+
+    /**
+     * Sets a field to the given value.  The value must be of the correct type
+     * for this field, i.e. the same type that
+     * {@link Message#getField(Descriptors.FieldDescriptor)} would return.
+     */
+    Builder setField(Descriptors.FieldDescriptor field, Object value);
+
+    /**
+     * Clears the field.  This is exactly equivalent to calling the generated
+     * "clear" accessor method corresponding to the field.
+     */
+    Builder clearField(Descriptors.FieldDescriptor field);
+
+    /**
+     * Clears the oneof.  This is exactly equivalent to calling the generated
+     * "clear" accessor method corresponding to the oneof.
+     */
+    Builder clearOneof(Descriptors.OneofDescriptor oneof);
+
+    /**
+     * Sets an element of a repeated field to the given value.  The value must
+     * be of the correct type for this field, i.e. the same type that
+     * {@link Message#getRepeatedField(Descriptors.FieldDescriptor,int)} would
+     * return.
+     * @throws IllegalArgumentException The field is not a repeated field, or
+     *           {@code field.getContainingType() != getDescriptorForType()}.
+     */
+    Builder setRepeatedField(Descriptors.FieldDescriptor field,
+                             int index, Object value);
+
+    /**
+     * Like {@code setRepeatedField}, but appends the value as a new element.
+     * @throws IllegalArgumentException The field is not a repeated field, or
+     *           {@code field.getContainingType() != getDescriptorForType()}.
+     */
+    Builder addRepeatedField(Descriptors.FieldDescriptor field, Object value);
+
+    /** Set the {@link UnknownFieldSet} for this message. */
+    Builder setUnknownFields(UnknownFieldSet unknownFields);
+
+    /**
+     * Merge some unknown fields into the {@link UnknownFieldSet} for this
+     * message.
+     */
+    Builder mergeUnknownFields(UnknownFieldSet unknownFields);
+
+    // ---------------------------------------------------------------
+    // Convenience methods.
+
+    // (From MessageLite.Builder, re-declared here only for return type
+    // covariance.)
+    Builder mergeFrom(ByteString data) throws InvalidProtocolBufferException;
+    Builder mergeFrom(ByteString data,
+                      ExtensionRegistryLite extensionRegistry)
+                      throws InvalidProtocolBufferException;
+    Builder mergeFrom(byte[] data) throws InvalidProtocolBufferException;
+    Builder mergeFrom(byte[] data, int off, int len)
+                      throws InvalidProtocolBufferException;
+    Builder mergeFrom(byte[] data,
+                      ExtensionRegistryLite extensionRegistry)
+                      throws InvalidProtocolBufferException;
+    Builder mergeFrom(byte[] data, int off, int len,
+                      ExtensionRegistryLite extensionRegistry)
+                      throws InvalidProtocolBufferException;
+    Builder mergeFrom(InputStream input) throws IOException;
+    Builder mergeFrom(InputStream input,
+                      ExtensionRegistryLite extensionRegistry)
+                      throws IOException;
+    boolean mergeDelimitedFrom(InputStream input)
+                               throws IOException;
+    boolean mergeDelimitedFrom(InputStream input,
+                               ExtensionRegistryLite extensionRegistry)
+                               throws IOException;
+  }
+}