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

// 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.List;
import java.util.Map;

/** A writer that performs serialization of protobuf message fields. */
@ExperimentalApi
@CheckReturnValue
interface Writer {

  /** The order in which the fields are written by a {@link Writer}. */
  enum FieldOrder {
    /** Fields are written in ascending order by field number. */
    ASCENDING,

    /** Fields are written in descending order by field number. */
    DESCENDING
  }

  /** Indicates the order in which the fields are written by this {@link Writer}. */
  FieldOrder fieldOrder();

  /** Writes a field of type {@link FieldType#SFIXED32}. */
  void writeSFixed32(int fieldNumber, int value) throws IOException;

  /** Writes a field of type {@link FieldType#INT64}. */
  void writeInt64(int fieldNumber, long value) throws IOException;

  /** Writes a field of type {@link FieldType#SFIXED64}. */
  void writeSFixed64(int fieldNumber, long value) throws IOException;

  /** Writes a field of type {@link FieldType#FLOAT}. */
  void writeFloat(int fieldNumber, float value) throws IOException;

  /** Writes a field of type {@link FieldType#DOUBLE}. */
  void writeDouble(int fieldNumber, double value) throws IOException;

  /** Writes a field of type {@link FieldType#ENUM}. */
  void writeEnum(int fieldNumber, int value) throws IOException;

  /** Writes a field of type {@link FieldType#UINT64}. */
  void writeUInt64(int fieldNumber, long value) throws IOException;

  /** Writes a field of type {@link FieldType#INT32}. */
  void writeInt32(int fieldNumber, int value) throws IOException;

  /** Writes a field of type {@link FieldType#FIXED64}. */
  void writeFixed64(int fieldNumber, long value) throws IOException;

  /** Writes a field of type {@link FieldType#FIXED32}. */
  void writeFixed32(int fieldNumber, int value) throws IOException;

  /** Writes a field of type {@link FieldType#BOOL}. */
  void writeBool(int fieldNumber, boolean value) throws IOException;

  /** Writes a field of type {@link FieldType#STRING}. */
  void writeString(int fieldNumber, String value) throws IOException;

  /** Writes a field of type {@link FieldType#BYTES}. */
  void writeBytes(int fieldNumber, ByteString value) throws IOException;

  /** Writes a field of type {@link FieldType#UINT32}. */
  void writeUInt32(int fieldNumber, int value) throws IOException;

  /** Writes a field of type {@link FieldType#SINT32}. */
  void writeSInt32(int fieldNumber, int value) throws IOException;

  /** Writes a field of type {@link FieldType#SINT64}. */
  void writeSInt64(int fieldNumber, long value) throws IOException;

  /** Writes a field of type {@link FieldType#MESSAGE}. */
  void writeMessage(int fieldNumber, Object value) throws IOException;

  /** Writes a field of type {@link FieldType#MESSAGE}. */
  void writeMessage(int fieldNumber, Object value, Schema schema) throws IOException;

  /**
   * Writes a field of type {@link FieldType#GROUP}.
   *
   * @deprecated groups fields are deprecated.
   */
  @Deprecated
  void writeGroup(int fieldNumber, Object value) throws IOException;

  /**
   * Writes a field of type {@link FieldType#GROUP}.
   *
   * @deprecated groups fields are deprecated.
   */
  @Deprecated
  void writeGroup(int fieldNumber, Object value, Schema schema) throws IOException;

  /**
   * Writes a single start group tag.
   *
   * @deprecated groups fields are deprecated.
   */
  @Deprecated
  void writeStartGroup(int fieldNumber) throws IOException;

  /**
   * Writes a single end group tag.
   *
   * @deprecated groups fields are deprecated.
   */
  @Deprecated
  void writeEndGroup(int fieldNumber) throws IOException;

  /** Writes a list field of type {@link FieldType#INT32}. */
  void writeInt32List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#FIXED32}. */
  void writeFixed32List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#INT64}. */
  void writeInt64List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#UINT64}. */
  void writeUInt64List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#FIXED64}. */
  void writeFixed64List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#FLOAT}. */
  void writeFloatList(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#DOUBLE}. */
  void writeDoubleList(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#ENUM}. */
  void writeEnumList(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#BOOL}. */
  void writeBoolList(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#STRING}. */
  void writeStringList(int fieldNumber, List value) throws IOException;

  /** Writes a list field of type {@link FieldType#BYTES}. */
  void writeBytesList(int fieldNumber, List value) throws IOException;

  /** Writes a list field of type {@link FieldType#UINT32}. */
  void writeUInt32List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#SFIXED32}. */
  void writeSFixed32List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#SFIXED64}. */
  void writeSFixed64List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#SINT32}. */
  void writeSInt32List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#SINT64}. */
  void writeSInt64List(int fieldNumber, List value, boolean packed) throws IOException;

  /** Writes a list field of type {@link FieldType#MESSAGE}. */
  void writeMessageList(int fieldNumber, List value) throws IOException;

  /** Writes a list field of type {@link FieldType#MESSAGE}. */
  void writeMessageList(int fieldNumber, List value, Schema schema) throws IOException;

  /**
   * Writes a list field of type {@link FieldType#GROUP}.
   *
   * @deprecated groups fields are deprecated.
   */
  @Deprecated
  void writeGroupList(int fieldNumber, List value) throws IOException;

  /**
   * Writes a list field of type {@link FieldType#GROUP}.
   *
   * @deprecated groups fields are deprecated.
   */
  @Deprecated
  void writeGroupList(int fieldNumber, List value, Schema schema) throws IOException;

  /**
   * Writes a message field in {@code MessageSet} wire-format.
   *
   * @param value A message instance or an opaque {@link ByteString} for an unknown field.
   */
  void writeMessageSetItem(int fieldNumber, Object value) throws IOException;

  /** Writes a map field. */
   void writeMap(int fieldNumber, MapEntryLite.Metadata metadata, Map map)
      throws IOException;
}