diff options
Diffstat (limited to 'javanano/src/main/java/com/google/protobuf/nano/MessageNano.java')
| -rw-r--r-- | javanano/src/main/java/com/google/protobuf/nano/MessageNano.java | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/javanano/src/main/java/com/google/protobuf/nano/MessageNano.java b/javanano/src/main/java/com/google/protobuf/nano/MessageNano.java deleted file mode 100644 index 23475027..00000000 --- a/javanano/src/main/java/com/google/protobuf/nano/MessageNano.java +++ /dev/null @@ -1,198 +0,0 @@ -// Protocol Buffers - Google's data interchange format -// Copyright 2013 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.nano; - -import java.io.IOException; -import java.util.Arrays; - -/** - * Abstract interface implemented by Protocol Message objects. - * - * @author wink@google.com Wink Saville - */ -public abstract class MessageNano { - protected volatile int cachedSize = -1; - - /** - * Get the number of bytes required to encode this message. - * Returns the cached size or calls getSerializedSize which - * sets the cached size. This is used internally when serializing - * so the size is only computed once. If a member is modified - * then this could be stale call getSerializedSize if in doubt. - */ - public int getCachedSize() { - if (cachedSize < 0) { - // getSerializedSize sets cachedSize - getSerializedSize(); - } - return cachedSize; - } - - /** - * Computes the number of bytes required to encode this message. - * The size is cached and the cached result can be retrieved - * using getCachedSize(). - */ - public int getSerializedSize() { - int size = computeSerializedSize(); - cachedSize = size; - return size; - } - - /** - * Computes the number of bytes required to encode this message. This does not update the - * cached size. - */ - protected int computeSerializedSize() { - // This is overridden if the generated message has serialized fields. - return 0; - } - - /** - * Serializes the message and writes it to {@code output}. - * - * @param output the output to receive the serialized form. - * @throws IOException if an error occurred writing to {@code output}. - */ - public void writeTo(CodedOutputByteBufferNano output) throws IOException { - // Does nothing by default. Overridden by subclasses which have data to write. - } - - /** - * Parse {@code input} as a message of this type and merge it with the - * message being built. - */ - public abstract MessageNano mergeFrom(CodedInputByteBufferNano input) throws IOException; - - /** - * Serialize to a byte array. - * @return byte array with the serialized data. - */ - public static final byte[] toByteArray(MessageNano msg) { - final byte[] result = new byte[msg.getSerializedSize()]; - toByteArray(msg, result, 0, result.length); - return result; - } - - /** - * Serialize to a byte array starting at offset through length. The - * method getSerializedSize must have been called prior to calling - * this method so the proper length is know. If an attempt to - * write more than length bytes OutOfSpaceException will be thrown - * and if length bytes are not written then IllegalStateException - * is thrown. - */ - public static final void toByteArray(MessageNano msg, byte[] data, int offset, int length) { - try { - final CodedOutputByteBufferNano output = - CodedOutputByteBufferNano.newInstance(data, offset, length); - msg.writeTo(output); - output.checkNoSpaceLeft(); - } catch (IOException e) { - throw new RuntimeException("Serializing to a byte array threw an IOException " - + "(should never happen).", e); - } - } - - /** - * Parse {@code data} as a message of this type and merge it with the - * message being built. - */ - public static final <T extends MessageNano> T mergeFrom(T msg, final byte[] data) - throws InvalidProtocolBufferNanoException { - return mergeFrom(msg, data, 0, data.length); - } - - /** - * Parse {@code data} as a message of this type and merge it with the - * message being built. - */ - public static final <T extends MessageNano> T mergeFrom(T msg, final byte[] data, - final int off, final int len) throws InvalidProtocolBufferNanoException { - try { - final CodedInputByteBufferNano input = - CodedInputByteBufferNano.newInstance(data, off, len); - msg.mergeFrom(input); - input.checkLastTagWas(0); - return msg; - } catch (InvalidProtocolBufferNanoException e) { - throw e; - } catch (IOException e) { - throw new RuntimeException("Reading from a byte array threw an IOException (should " - + "never happen)."); - } - } - - /** - * Compares two {@code MessageNano}s and returns true if the message's are the same class and - * have serialized form equality (i.e. all of the field values are the same). - */ - public static final boolean messageNanoEquals(MessageNano a, MessageNano b) { - if (a == b) { - return true; - } - if (a == null || b == null) { - return false; - } - if (a.getClass() != b.getClass()) { - return false; - } - final int serializedSize = a.getSerializedSize(); - if (b.getSerializedSize() != serializedSize) { - return false; - } - final byte[] aByteArray = new byte[serializedSize]; - final byte[] bByteArray = new byte[serializedSize]; - toByteArray(a, aByteArray, 0, serializedSize); - toByteArray(b, bByteArray, 0, serializedSize); - return Arrays.equals(aByteArray, bByteArray); - } - - /** - * Returns a string that is (mostly) compatible with ProtoBuffer's TextFormat. Note that groups - * (which are deprecated) are not serialized with the correct field name. - * - * <p>This is implemented using reflection, so it is not especially fast nor is it guaranteed - * to find all fields if you have method removal turned on for proguard. - */ - @Override - public String toString() { - return MessageNanoPrinter.print(this); - } - - /** - * Provides support for cloning. This only works if you specify the generate_clone method. - */ - @Override - public MessageNano clone() throws CloneNotSupportedException { - return (MessageNano) super.clone(); - } -} |