263 lines
10 KiB
Java
263 lines
10 KiB
Java
/*
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* Copyright (C) 2018 Lightbend Inc. <https://www.lightbend.com>
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*/
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// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// http://code.google.com/p/protobuf/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package akka.protobuf;
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import java.io.InputStream;
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/**
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* Abstract interface for parsing Protocol Messages.
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*
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* @author liujisi@google.com (Pherl Liu)
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*/
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public interface Parser<MessageType> {
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/**
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* Parses a message of {@code MessageType} from the input.
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*
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* <p>Note: The caller should call
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* {@link CodedInputStream#checkLastTagWas(int)} after calling this to
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* verify that the last tag seen was the appropriate end-group tag,
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* or zero for EOF.
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*/
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public MessageType parseFrom(CodedInputStream input)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(CodedInputStream)}, but also parses extensions.
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* The extensions that you want to be able to parse must be registered in
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* {@code extensionRegistry}. Extensions not in the registry will be treated
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* as unknown fields.
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*/
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public MessageType parseFrom(CodedInputStream input,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(CodedInputStream)}, but does not throw an
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* exception if the message is missing required fields. Instead, a partial
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* message is returned.
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*/
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public MessageType parsePartialFrom(CodedInputStream input)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(CodedInputStream input, ExtensionRegistryLite)},
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* but does not throw an exception if the message is missing required fields.
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* Instead, a partial message is returned.
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*/
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public MessageType parsePartialFrom(CodedInputStream input,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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// ---------------------------------------------------------------
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// Convenience methods.
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/**
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* Parses {@code data} as a message of {@code MessageType}.
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* This is just a small wrapper around {@link #parseFrom(CodedInputStream)}.
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*/
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public MessageType parseFrom(ByteString data)
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throws InvalidProtocolBufferException;
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/**
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* Parses {@code data} as a message of {@code MessageType}.
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* This is just a small wrapper around
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* {@link #parseFrom(CodedInputStream, ExtensionRegistryLite)}.
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*/
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public MessageType parseFrom(ByteString data,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(ByteString)}, but does not throw an
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* exception if the message is missing required fields. Instead, a partial
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* message is returned.
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*/
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public MessageType parsePartialFrom(ByteString data)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(ByteString, ExtensionRegistryLite)},
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* but does not throw an exception if the message is missing required fields.
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* Instead, a partial message is returned.
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*/
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public MessageType parsePartialFrom(ByteString data,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Parses {@code data} as a message of {@code MessageType}.
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* This is just a small wrapper around {@link #parseFrom(CodedInputStream)}.
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*/
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public MessageType parseFrom(byte[] data, int off, int len)
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throws InvalidProtocolBufferException;
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/**
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* Parses {@code data} as a message of {@code MessageType}.
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* This is just a small wrapper around
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* {@link #parseFrom(CodedInputStream, ExtensionRegistryLite)}.
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*/
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public MessageType parseFrom(byte[] data, int off, int len,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Parses {@code data} as a message of {@code MessageType}.
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* This is just a small wrapper around {@link #parseFrom(CodedInputStream)}.
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*/
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public MessageType parseFrom(byte[] data)
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throws InvalidProtocolBufferException;
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/**
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* Parses {@code data} as a message of {@code MessageType}.
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* This is just a small wrapper around
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* {@link #parseFrom(CodedInputStream, ExtensionRegistryLite)}.
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*/
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public MessageType parseFrom(byte[] data,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(byte[], int, int)}, but does not throw an
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* exception if the message is missing required fields. Instead, a partial
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* message is returned.
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*/
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public MessageType parsePartialFrom(byte[] data, int off, int len)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(ByteString, ExtensionRegistryLite)},
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* but does not throw an exception if the message is missing required fields.
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* Instead, a partial message is returned.
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*/
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public MessageType parsePartialFrom(byte[] data, int off, int len,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(byte[])}, but does not throw an
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* exception if the message is missing required fields. Instead, a partial
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* message is returned.
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*/
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public MessageType parsePartialFrom(byte[] data)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(byte[], ExtensionRegistryLite)},
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* but does not throw an exception if the message is missing required fields.
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* Instead, a partial message is returned.
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*/
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public MessageType parsePartialFrom(byte[] data,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Parse a message of {@code MessageType} from {@code input}.
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* This is just a small wrapper around {@link #parseFrom(CodedInputStream)}.
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* Note that this method always reads the <i>entire</i> input (unless it
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* throws an exception). If you want it to stop earlier, you will need to
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* wrap your input in some wrapper stream that limits reading. Or, use
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* {@link MessageLite#writeDelimitedTo(java.io.OutputStream)} to write your
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* message and {@link #parseDelimitedFrom(InputStream)} to read it.
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* <p>
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* Despite usually reading the entire input, this does not close the stream.
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*/
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public MessageType parseFrom(InputStream input)
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throws InvalidProtocolBufferException;
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/**
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* Parses a message of {@code MessageType} from {@code input}.
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* This is just a small wrapper around
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* {@link #parseFrom(CodedInputStream, ExtensionRegistryLite)}.
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*/
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public MessageType parseFrom(InputStream input,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(InputStream)}, but does not throw an
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* exception if the message is missing required fields. Instead, a partial
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* message is returned.
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*/
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public MessageType parsePartialFrom(InputStream input)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(InputStream, ExtensionRegistryLite)},
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* but does not throw an exception if the message is missing required fields.
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* Instead, a partial message is returned.
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*/
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public MessageType parsePartialFrom(InputStream input,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseFrom(InputStream)}, but does not read util EOF.
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* Instead, the size of message (encoded as a varint) is read first,
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* then the message data. Use
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* {@link MessageLite#writeDelimitedTo(java.io.OutputStream)} to write
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* messages in this format.
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*
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* @return True if successful, or false if the stream is at EOF when the
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* method starts. Any other error (including reaching EOF during
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* parsing) will cause an exception to be thrown.
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*/
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public MessageType parseDelimitedFrom(InputStream input)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseDelimitedFrom(InputStream)} but supporting extensions.
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*/
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public MessageType parseDelimitedFrom(InputStream input,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseDelimitedFrom(InputStream)}, but does not throw an
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* exception if the message is missing required fields. Instead, a partial
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* message is returned.
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*/
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public MessageType parsePartialDelimitedFrom(InputStream input)
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throws InvalidProtocolBufferException;
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/**
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* Like {@link #parseDelimitedFrom(InputStream, ExtensionRegistryLite)},
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* but does not throw an exception if the message is missing required fields.
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* Instead, a partial message is returned.
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*/
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public MessageType parsePartialDelimitedFrom(
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InputStream input,
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ExtensionRegistryLite extensionRegistry)
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throws InvalidProtocolBufferException;
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}
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