Revert https://codereview.chromium.org/1291903002 (protobuf roll).

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

Index: third_party/protobuf/java/src/main/java/com/google/protobuf/DynamicMessage.java
diff --git a/third_party/protobuf/java/src/main/java/com/google/protobuf/DynamicMessage.java b/third_party/protobuf/java/src/main/java/com/google/protobuf/DynamicMessage.java
deleted file mode 100644
index 3ea1b688967fa97cc16b3470dea1b6ccb51fdeb4..0000000000000000000000000000000000000000
--- a/third_party/protobuf/java/src/main/java/com/google/protobuf/DynamicMessage.java
+++ /dev/null
@@ -1,644 +0,0 @@
-// 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 com.google.protobuf.Descriptors.Descriptor;
-import com.google.protobuf.Descriptors.EnumValueDescriptor;
-import com.google.protobuf.Descriptors.FieldDescriptor;
-import com.google.protobuf.Descriptors.OneofDescriptor;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-
-/**
- * An implementation of {@link Message} that can represent arbitrary types,
- * given a {@link Descriptors.Descriptor}.
- *
- * @author kenton@google.com Kenton Varda
- */
-public final class DynamicMessage extends AbstractMessage {
-  private final Descriptor type;
-  private final FieldSet<FieldDescriptor> fields;
-  private final FieldDescriptor[] oneofCases;
-  private final UnknownFieldSet unknownFields;
-  private int memoizedSize = -1;
-
-  /**
-   * Construct a {@code DynamicMessage} using the given {@code FieldSet}.
-   * oneofCases stores the FieldDescriptor for each oneof to indicate
-   * which field is set. Caller should make sure the array is immutable.
-   *
-   * This constructor is package private and will be used in
-   * {@code DynamicMutableMessage} to convert a mutable message to an immutable
-   * message.
-   */
-  DynamicMessage(Descriptor type, FieldSet<FieldDescriptor> fields,
-                 FieldDescriptor[] oneofCases,
-                 UnknownFieldSet unknownFields) {
-    this.type = type;
-    this.fields = fields;
-    this.oneofCases = oneofCases;
-    this.unknownFields = unknownFields;
-  }
-
-  /**
-   * Get a {@code DynamicMessage} representing the default instance of the
-   * given type.
-   */
-  public static DynamicMessage getDefaultInstance(Descriptor type) {
-    int oneofDeclCount = type.toProto().getOneofDeclCount();
-    FieldDescriptor[] oneofCases = new FieldDescriptor[oneofDeclCount];
-    return new DynamicMessage(type, FieldSet.<FieldDescriptor>emptySet(),
-                              oneofCases,
-                              UnknownFieldSet.getDefaultInstance());
-  }
-
-
-  /** Parse a message of the given type from the given input stream. */
-  public static DynamicMessage parseFrom(Descriptor type,
-                                         CodedInputStream input)
-                                         throws IOException {
-    return newBuilder(type).mergeFrom(input).buildParsed();
-  }
-
-  /** Parse a message of the given type from the given input stream. */
-  public static DynamicMessage parseFrom(
-      Descriptor type,
-      CodedInputStream input,
-      ExtensionRegistry extensionRegistry)
-      throws IOException {
-    return newBuilder(type).mergeFrom(input, extensionRegistry).buildParsed();
-  }
-
-  /** Parse {@code data} as a message of the given type and return it. */
-  public static DynamicMessage parseFrom(Descriptor type, ByteString data)
-                                         throws InvalidProtocolBufferException {
-    return newBuilder(type).mergeFrom(data).buildParsed();
-  }
-
-  /** Parse {@code data} as a message of the given type and return it. */
-  public static DynamicMessage parseFrom(Descriptor type, ByteString data,
-                                         ExtensionRegistry extensionRegistry)
-                                         throws InvalidProtocolBufferException {
-    return newBuilder(type).mergeFrom(data, extensionRegistry).buildParsed();
-  }
-
-  /** Parse {@code data} as a message of the given type and return it. */
-  public static DynamicMessage parseFrom(Descriptor type, byte[] data)
-                                         throws InvalidProtocolBufferException {
-    return newBuilder(type).mergeFrom(data).buildParsed();
-  }
-
-  /** Parse {@code data} as a message of the given type and return it. */
-  public static DynamicMessage parseFrom(Descriptor type, byte[] data,
-                                         ExtensionRegistry extensionRegistry)
-                                         throws InvalidProtocolBufferException {
-    return newBuilder(type).mergeFrom(data, extensionRegistry).buildParsed();
-  }
-
-  /** Parse a message of the given type from {@code input} and return it. */
-  public static DynamicMessage parseFrom(Descriptor type, InputStream input)
-                                         throws IOException {
-    return newBuilder(type).mergeFrom(input).buildParsed();
-  }
-
-  /** Parse a message of the given type from {@code input} and return it. */
-  public static DynamicMessage parseFrom(Descriptor type, InputStream input,
-                                         ExtensionRegistry extensionRegistry)
-                                         throws IOException {
-    return newBuilder(type).mergeFrom(input, extensionRegistry).buildParsed();
-  }
-
-  /** Construct a {@link Message.Builder} for the given type. */
-  public static Builder newBuilder(Descriptor type) {
-    return new Builder(type);
-  }
-
-  /**
-   * Construct a {@link Message.Builder} for a message of the same type as
-   * {@code prototype}, and initialize it with {@code prototype}'s contents.
-   */
-  public static Builder newBuilder(Message prototype) {
-    return new Builder(prototype.getDescriptorForType()).mergeFrom(prototype);
-  }
-
-  // -----------------------------------------------------------------
-  // Implementation of Message interface.
-
-  public Descriptor getDescriptorForType() {
-    return type;
-  }
-
-  public DynamicMessage getDefaultInstanceForType() {
-    return getDefaultInstance(type);
-  }
-
-  public Map<FieldDescriptor, Object> getAllFields() {
-    return fields.getAllFields();
-  }
-
-  public boolean hasOneof(OneofDescriptor oneof) {
-    verifyOneofContainingType(oneof);
-    FieldDescriptor field = oneofCases[oneof.getIndex()];
-    if (field == null) {
-      return false;
-    }
-    return true;
-  }
-
-  public FieldDescriptor getOneofFieldDescriptor(OneofDescriptor oneof) {
-    verifyOneofContainingType(oneof);
-    return oneofCases[oneof.getIndex()];
-  }
-
-  public boolean hasField(FieldDescriptor field) {
-    verifyContainingType(field);
-    return fields.hasField(field);
-  }
-
-  public Object getField(FieldDescriptor field) {
-    verifyContainingType(field);
-    Object result = fields.getField(field);
-    if (result == null) {
-      if (field.isRepeated()) {
-        result = Collections.emptyList();
-      } else if (field.getJavaType() == FieldDescriptor.JavaType.MESSAGE) {
-        result = getDefaultInstance(field.getMessageType());
-      } else {
-        result = field.getDefaultValue();
-      }
-    }
-    return result;
-  }
-
-  public int getRepeatedFieldCount(FieldDescriptor field) {
-    verifyContainingType(field);
-    return fields.getRepeatedFieldCount(field);
-  }
-
-  public Object getRepeatedField(FieldDescriptor field, int index) {
-    verifyContainingType(field);
-    return fields.getRepeatedField(field, index);
-  }
-
-  public UnknownFieldSet getUnknownFields() {
-    return unknownFields;
-  }
-
-  static boolean isInitialized(Descriptor type,
-                               FieldSet<FieldDescriptor> fields) {
-    // Check that all required fields are present.
-    for (final FieldDescriptor field : type.getFields()) {
-      if (field.isRequired()) {
-        if (!fields.hasField(field)) {
-          return false;
-        }
-      }
-    }
-
-    // Check that embedded messages are initialized.
-    return fields.isInitialized();
-  }
-
-  @Override
-  public boolean isInitialized() {
-    return isInitialized(type, fields);
-  }
-
-  @Override
-  public void writeTo(CodedOutputStream output) throws IOException {
-    if (type.getOptions().getMessageSetWireFormat()) {
-      fields.writeMessageSetTo(output);
-      unknownFields.writeAsMessageSetTo(output);
-    } else {
-      fields.writeTo(output);
-      unknownFields.writeTo(output);
-    }
-  }
-
-  @Override
-  public int getSerializedSize() {
-    int size = memoizedSize;
-    if (size != -1) return size;
-
-    if (type.getOptions().getMessageSetWireFormat()) {
-      size = fields.getMessageSetSerializedSize();
-      size += unknownFields.getSerializedSizeAsMessageSet();
-    } else {
-      size = fields.getSerializedSize();
-      size += unknownFields.getSerializedSize();
-    }
-
-    memoizedSize = size;
-    return size;
-  }
-
-  public Builder newBuilderForType() {
-    return new Builder(type);
-  }
-
-  public Builder toBuilder() {
-    return newBuilderForType().mergeFrom(this);
-  }
-
-  public Parser<DynamicMessage> getParserForType() {
-    return new AbstractParser<DynamicMessage>() {
-      public DynamicMessage parsePartialFrom(
-          CodedInputStream input,
-          ExtensionRegistryLite extensionRegistry)
-          throws InvalidProtocolBufferException {
-        Builder builder = newBuilder(type);
-        try {
-          builder.mergeFrom(input, extensionRegistry);
-        } catch (InvalidProtocolBufferException e) {
-          throw e.setUnfinishedMessage(builder.buildPartial());
-        } catch (IOException e) {
-          throw new InvalidProtocolBufferException(e.getMessage())
-              .setUnfinishedMessage(builder.buildPartial());
-        }
-        return builder.buildPartial();
-      }
-    };
-  }
-
-  /** Verifies that the field is a field of this message. */
-  private void verifyContainingType(FieldDescriptor field) {
-    if (field.getContainingType() != type) {
-      throw new IllegalArgumentException(
-        "FieldDescriptor does not match message type.");
-    }
-  }
-
-  /** Verifies that the oneof is an oneof of this message. */
-  private void verifyOneofContainingType(OneofDescriptor oneof) {
-    if (oneof.getContainingType() != type) {
-      throw new IllegalArgumentException(
-        "OneofDescriptor does not match message type.");
-    }
-  }
-
-  // =================================================================
-
-  /**
-   * Builder for {@link DynamicMessage}s.
-   */
-  public static final class Builder extends AbstractMessage.Builder<Builder> {
-    private final Descriptor type;
-    private FieldSet<FieldDescriptor> fields;
-    private final FieldDescriptor[] oneofCases;
-    private UnknownFieldSet unknownFields;
-
-    /** Construct a {@code Builder} for the given type. */
-    private Builder(Descriptor type) {
-      this.type = type;
-      this.fields = FieldSet.newFieldSet();
-      this.unknownFields = UnknownFieldSet.getDefaultInstance();
-      this.oneofCases = new FieldDescriptor[type.toProto().getOneofDeclCount()];
-    }
-
-    // ---------------------------------------------------------------
-    // Implementation of Message.Builder interface.
-
-    @Override
-    public Builder clear() {
-      if (fields.isImmutable()) {
-        fields = FieldSet.newFieldSet();
-      } else {
-        fields.clear();
-      }
-      unknownFields = UnknownFieldSet.getDefaultInstance();
-      return this;
-    }
-
-    @Override
-    public Builder mergeFrom(Message other) {
-      if (other instanceof DynamicMessage) {
-        // This should be somewhat faster than calling super.mergeFrom().
-        DynamicMessage otherDynamicMessage = (DynamicMessage) other;
-        if (otherDynamicMessage.type != type) {
-          throw new IllegalArgumentException(
-            "mergeFrom(Message) can only merge messages of the same type.");
-        }
-        ensureIsMutable();
-        fields.mergeFrom(otherDynamicMessage.fields);
-        mergeUnknownFields(otherDynamicMessage.unknownFields);
-        for (int i = 0; i < oneofCases.length; i++) {
-          if (oneofCases[i] == null) {
-            oneofCases[i] = otherDynamicMessage.oneofCases[i];
-          } else {
-            if ((otherDynamicMessage.oneofCases[i] != null)
-                && (oneofCases[i] != otherDynamicMessage.oneofCases[i])) {
-              fields.clearField(oneofCases[i]);
-              oneofCases[i] = otherDynamicMessage.oneofCases[i];
-            }
-          }
-        }
-        return this;
-      } else {
-        return super.mergeFrom(other);
-      }
-    }
-
-    public DynamicMessage build() {
-      if (!isInitialized()) {
-        throw newUninitializedMessageException(
-          new DynamicMessage(type, fields,
-              java.util.Arrays.copyOf(oneofCases, oneofCases.length), unknownFields));
-      }
-      return buildPartial();
-    }
-
-    /**
-     * Helper for DynamicMessage.parseFrom() methods to call.  Throws
-     * {@link InvalidProtocolBufferException} instead of
-     * {@link UninitializedMessageException}.
-     */
-    private DynamicMessage buildParsed() throws InvalidProtocolBufferException {
-      if (!isInitialized()) {
-        throw newUninitializedMessageException(
-          new DynamicMessage(type, fields,
-              java.util.Arrays.copyOf(oneofCases, oneofCases.length), unknownFields))
-          .asInvalidProtocolBufferException();
-      }
-      return buildPartial();
-    }
-
-    public DynamicMessage buildPartial() {
-      fields.makeImmutable();
-      DynamicMessage result =
-        new DynamicMessage(type, fields,
-            java.util.Arrays.copyOf(oneofCases, oneofCases.length), unknownFields);
-      return result;
-    }
-
-    @Override
-    public Builder clone() {
-      Builder result = new Builder(type);
-      result.fields.mergeFrom(fields);
-      result.mergeUnknownFields(unknownFields);
-      System.arraycopy(oneofCases, 0, result.oneofCases, 0 , oneofCases.length);
-      return result;
-    }
-
-    public boolean isInitialized() {
-      return DynamicMessage.isInitialized(type, fields);
-    }
-
-    public Descriptor getDescriptorForType() {
-      return type;
-    }
-
-    public DynamicMessage getDefaultInstanceForType() {
-      return getDefaultInstance(type);
-    }
-
-    public Map<FieldDescriptor, Object> getAllFields() {
-      return fields.getAllFields();
-    }
-
-    public Builder newBuilderForField(FieldDescriptor field) {
-      verifyContainingType(field);
-
-      if (field.getJavaType() != FieldDescriptor.JavaType.MESSAGE) {
-        throw new IllegalArgumentException(
-          "newBuilderForField is only valid for fields with message type.");
-      }
-
-      return new Builder(field.getMessageType());
-    }
-
-    public boolean hasOneof(OneofDescriptor oneof) {
-      verifyOneofContainingType(oneof);
-      FieldDescriptor field = oneofCases[oneof.getIndex()];
-      if (field == null) {
-        return false;
-      }
-      return true;
-    }
-
-    public FieldDescriptor getOneofFieldDescriptor(OneofDescriptor oneof) {
-      verifyOneofContainingType(oneof);
-      return oneofCases[oneof.getIndex()];
-    }
-
-    public Builder clearOneof(OneofDescriptor oneof) {
-      verifyOneofContainingType(oneof);
-      FieldDescriptor field = oneofCases[oneof.getIndex()];
-      if (field != null) {
-        clearField(field);
-      }
-      return this;
-    }
-
-    public boolean hasField(FieldDescriptor field) {
-      verifyContainingType(field);
-      return fields.hasField(field);
-    }
-
-    public Object getField(FieldDescriptor field) {
-      verifyContainingType(field);
-      Object result = fields.getField(field);
-      if (result == null) {
-        if (field.isRepeated()) {
-          result = Collections.emptyList();
-        } else if (field.getJavaType() == FieldDescriptor.JavaType.MESSAGE) {
-          result = getDefaultInstance(field.getMessageType());
-        } else {
-          result = field.getDefaultValue();
-        }
-      }
-      return result;
-    }
-
-    public Builder setField(FieldDescriptor field, Object value) {
-      verifyContainingType(field);
-      ensureIsMutable();
-      // TODO(xiaofeng): This check should really be put in FieldSet.setField()
-      // where all other such checks are done. However, currently
-      // FieldSet.setField() permits Integer value for enum fields probably
-      // because of some internal features we support. Should figure it out
-      // and move this check to a more appropriate place.
-      if (field.getType() == FieldDescriptor.Type.ENUM) {
-        ensureEnumValueDescriptor(field, value);
-      }
-      OneofDescriptor oneofDescriptor = field.getContainingOneof();
-      if (oneofDescriptor != null) {
-        int index = oneofDescriptor.getIndex();
-        FieldDescriptor oldField = oneofCases[index];
-        if ((oldField != null) && (oldField != field)) {
-          fields.clearField(oldField);
-        }
-        oneofCases[index] = field;
-      }
-      fields.setField(field, value);
-      return this;
-    }
-
-    public Builder clearField(FieldDescriptor field) {
-      verifyContainingType(field);
-      ensureIsMutable();
-      OneofDescriptor oneofDescriptor = field.getContainingOneof();
-      if (oneofDescriptor != null) {
-        int index = oneofDescriptor.getIndex();
-        if (oneofCases[index] == field) {
-          oneofCases[index] = null;
-        }
-      }
-      fields.clearField(field);
-      return this;
-    }
-
-    public int getRepeatedFieldCount(FieldDescriptor field) {
-      verifyContainingType(field);
-      return fields.getRepeatedFieldCount(field);
-    }
-
-    public Object getRepeatedField(FieldDescriptor field, int index) {
-      verifyContainingType(field);
-      return fields.getRepeatedField(field, index);
-    }
-
-    public Builder setRepeatedField(FieldDescriptor field,
-                                    int index, Object value) {
-      verifyContainingType(field);
-      ensureIsMutable();
-      fields.setRepeatedField(field, index, value);
-      return this;
-    }
-
-    public Builder addRepeatedField(FieldDescriptor field, Object value) {
-      verifyContainingType(field);
-      ensureIsMutable();
-      fields.addRepeatedField(field, value);
-      return this;
-    }
-
-    public UnknownFieldSet getUnknownFields() {
-      return unknownFields;
-    }
-
-    public Builder setUnknownFields(UnknownFieldSet unknownFields) {
-      if (getDescriptorForType().getFile().getSyntax()
-          == Descriptors.FileDescriptor.Syntax.PROTO3) {
-        // Proto3 discards unknown fields.
-        return this;
-      }
-      this.unknownFields = unknownFields;
-      return this;
-    }
-
-    @Override
-    public Builder mergeUnknownFields(UnknownFieldSet unknownFields) {
-      if (getDescriptorForType().getFile().getSyntax()
-          == Descriptors.FileDescriptor.Syntax.PROTO3) {
-        // Proto3 discards unknown fields.
-        return this;
-      }
-      this.unknownFields =
-        UnknownFieldSet.newBuilder(this.unknownFields)
-                       .mergeFrom(unknownFields)
-                       .build();
-      return this;
-    }
-
-    /** Verifies that the field is a field of this message. */
-    private void verifyContainingType(FieldDescriptor field) {
-      if (field.getContainingType() != type) {
-        throw new IllegalArgumentException(
-          "FieldDescriptor does not match message type.");
-      }
-    }
-
-    /** Verifies that the oneof is an oneof of this message. */
-    private void verifyOneofContainingType(OneofDescriptor oneof) {
-      if (oneof.getContainingType() != type) {
-        throw new IllegalArgumentException(
-          "OneofDescriptor does not match message type.");
-      }
-    }
-
-    /** Verifies that the value is EnumValueDescriptor and matches Enum Type. */
-    private void ensureSingularEnumValueDescriptor(
-        FieldDescriptor field, Object value) {
-      if (value == null) {
-        throw new NullPointerException();
-      }
-      if (!(value instanceof EnumValueDescriptor)) {
-        throw new IllegalArgumentException(
-          "DynamicMessage should use EnumValueDescriptor to set Enum Value.");
-      }
-      // TODO(xiaofeng): Re-enable this check after Orgstore is fixed to not
-      // set incorrect EnumValueDescriptors.
-      // EnumDescriptor fieldType = field.getEnumType();
-      // EnumDescriptor fieldValueType = ((EnumValueDescriptor) value).getType();
-      // if (fieldType != fieldValueType) {
-      //  throw new IllegalArgumentException(String.format(
-      //      "EnumDescriptor %s of field doesn't match EnumDescriptor %s of field value",
-      //      fieldType.getFullName(), fieldValueType.getFullName()));
-      // }
-    }
-
-    /** Verifies the value for an enum field. */
-    private void ensureEnumValueDescriptor(
-        FieldDescriptor field, Object value) {
-      if (field.isRepeated()) {
-        for (Object item : (List) value) {
-          ensureSingularEnumValueDescriptor(field, item);
-        }
-      } else {
-         ensureSingularEnumValueDescriptor(field, value);
-      }
-    }
-
-    private void ensureIsMutable() {
-      if (fields.isImmutable()) {
-        fields = fields.clone();
-      }
-    }
-
-    @Override
-    public com.google.protobuf.Message.Builder getFieldBuilder(FieldDescriptor field) {
-      // TODO(xiangl): need implementation for dynamic message
-      throw new UnsupportedOperationException(
-        "getFieldBuilder() called on a dynamic message type.");
-    }
-
-    @Override
-    public com.google.protobuf.Message.Builder getRepeatedFieldBuilder(FieldDescriptor field,
-        int index) {
-      throw new UnsupportedOperationException(
-        "getRepeatedFieldBuilder() called on a dynamic message type.");
-    }
-  }
-}