| // Copyright 2018 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.devtools.build.lib.skyframe.serialization; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.ImmutableBiMap; |
| import com.google.protobuf.CodedInputStream; |
| import com.google.protobuf.CodedOutputStream; |
| import java.io.IOException; |
| |
| /** Codec for {@link Class}. */ |
| class ClassCodec implements ObjectCodec<Class<?>> { |
| @SuppressWarnings("unchecked") |
| @Override |
| public Class<Class<?>> getEncodedClass() { |
| return (Class<Class<?>>) (Object) Class.class; |
| } |
| |
| @Override |
| public void serialize(SerializationContext context, Class<?> obj, CodedOutputStream codedOut) |
| throws SerializationException, IOException { |
| codedOut.writeBoolNoTag(obj.isPrimitive()); |
| if (obj.isPrimitive()) { |
| codedOut.writeInt32NoTag(Preconditions.checkNotNull(PRIMITIVE_CLASS_INDEX_MAP.get(obj), obj)); |
| } else { |
| context.serialize(obj.getName(), codedOut); |
| } |
| } |
| |
| @Override |
| public Class<?> deserialize(DeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| boolean isPrimitive = codedIn.readBool(); |
| if (isPrimitive) { |
| return PRIMITIVE_CLASS_INDEX_MAP.inverse().get(codedIn.readInt32()); |
| } else { |
| String className = context.deserialize(codedIn); |
| try { |
| return Class.forName(className); |
| } catch (ClassNotFoundException e) { |
| throw new SerializationException("Couldn't find class for " + className, e); |
| } |
| } |
| } |
| |
| private static final ImmutableBiMap<Class<?>, Integer> PRIMITIVE_CLASS_INDEX_MAP = |
| ImmutableBiMap.<Class<?>, Integer>builder() |
| .put(byte.class, 1) |
| .put(short.class, 2) |
| .put(int.class, 3) |
| .put(long.class, 4) |
| .put(char.class, 5) |
| .put(float.class, 6) |
| .put(double.class, 7) |
| .put(boolean.class, 8) |
| .put(void.class, 9) |
| .build(); |
| } |