66 lines
2.8 KiB
Java
66 lines
2.8 KiB
Java
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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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 com.google.protobuf;
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/** A factory for message info that is generated into the message itself. */
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@ExperimentalApi
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class GeneratedMessageInfoFactory implements MessageInfoFactory {
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private static final GeneratedMessageInfoFactory instance = new GeneratedMessageInfoFactory();
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// Disallow construction - it's a singleton.
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private GeneratedMessageInfoFactory() {}
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public static GeneratedMessageInfoFactory getInstance() {
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return instance;
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}
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@Override
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public boolean isSupported(Class<?> messageType) {
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return GeneratedMessageLite.class.isAssignableFrom(messageType);
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}
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@Override
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public MessageInfo messageInfoFor(Class<?> messageType) {
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if (!GeneratedMessageLite.class.isAssignableFrom(messageType)) {
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throw new IllegalArgumentException("Unsupported message type: " + messageType.getName());
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}
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try {
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return (MessageInfo) GeneratedMessageLite.getDefaultInstance(
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messageType.asSubclass(GeneratedMessageLite.class))
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.buildMessageInfo();
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} catch (Exception e) {
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throw new RuntimeException("Unable to get message info for " + messageType.getName(), e);
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}
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}
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}
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