| /* |
| * Copyright 2008 Google Inc. |
| * |
| * 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.gwt.dev.javac; |
| |
| import com.google.gwt.dev.javac.TypeOracleMediator.TypeData; |
| import com.google.gwt.dev.util.DiskCache; |
| import com.google.gwt.dev.util.StringInterner; |
| import com.google.gwt.dev.util.Name.InternalName; |
| |
| import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader; |
| import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException; |
| import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.Serializable; |
| |
| /** |
| * Encapsulates the state of a single compiled class file. |
| */ |
| public final class CompiledClass implements Serializable { |
| |
| private static final DiskCache diskCache = DiskCache.INSTANCE; |
| |
| private final CompiledClass enclosingClass; |
| private final String internalName; |
| private final String sourceName; |
| private final boolean isLocal; |
| private transient TypeData typeData; |
| private CompilationUnit unit; |
| private String signatureHash; |
| |
| /** |
| * A token to retrieve this object's bytes from the disk cache. byte code is |
| * placed in the cache when the object is deserialized. |
| */ |
| private transient long cacheToken; |
| private transient NameEnvironmentAnswer nameEnvironmentAnswer; |
| |
| /** |
| * Create a compiled class from raw class bytes. |
| * |
| * @param classBytes - byte code for this class |
| * @param enclosingClass - outer class |
| * @param isLocal Is this class a local class? (See the JLS rev 2 section |
| * 14.3) |
| * @param internalName the internal binary name for this class. e.g. |
| * {@code java/util/Map$Entry}. See |
| * {@link "http://java.sun.com/docs/books/jvms/second_edition/html/ClassFile.doc.html#14757"} |
| */ |
| CompiledClass(byte[] classBytes, CompiledClass enclosingClass, boolean isLocal, |
| String internalName) { |
| this.enclosingClass = enclosingClass; |
| this.internalName = StringInterner.get().intern(internalName); |
| this.sourceName = StringInterner.get().intern(InternalName.toSourceName(internalName)); |
| this.cacheToken = diskCache.writeByteArray(classBytes); |
| this.isLocal = isLocal; |
| } |
| |
| /** |
| * Returns the bytes of the compiled class. |
| */ |
| public byte[] getBytes() { |
| return diskCache.readByteArray(cacheToken); |
| } |
| |
| public CompiledClass getEnclosingClass() { |
| return enclosingClass; |
| } |
| |
| /** |
| * Returns the class internal binary name for this type, e.g. |
| * {@code java/util/Map$Entry}. |
| */ |
| public String getInternalName() { |
| return internalName; |
| } |
| |
| /** |
| * Returns the enclosing package, e.g. {@code java.util}. |
| */ |
| public String getPackageName() { |
| return Shared.getPackageNameFromBinary(internalName); |
| } |
| |
| /** |
| * Returns a hash code on the byte code of the class. |
| */ |
| public String getSignatureHash() { |
| if (signatureHash == null) { |
| signatureHash = BytecodeSignatureMaker.getCompileDependencySignature(getBytes()); |
| } |
| return signatureHash; |
| } |
| |
| /** |
| * Returns the qualified source name, e.g. {@code java.util.Map.Entry}. |
| */ |
| public String getSourceName() { |
| return sourceName; |
| } |
| |
| public TypeData getTypeData() { |
| if (typeData == null) { |
| typeData = |
| new TypeData(getPackageName(), getSourceName(), getInternalName(), null, getBytes(), |
| getUnit().getLastModified()); |
| } |
| return typeData; |
| } |
| |
| public CompilationUnit getUnit() { |
| return unit; |
| } |
| |
| /** |
| * Returns <code>true</code> if this is a local type, or if this type is |
| * nested inside of any local type. |
| */ |
| public boolean isLocal() { |
| return isLocal; |
| } |
| |
| @Override |
| public String toString() { |
| return internalName; |
| } |
| |
| NameEnvironmentAnswer getNameEnvironmentAnswer() throws ClassFormatException { |
| if (nameEnvironmentAnswer == null) { |
| ClassFileReader cfr = |
| new ClassFileReader(getBytes(), unit.getResourceLocation().toCharArray(), true); |
| nameEnvironmentAnswer = new NameEnvironmentAnswer(cfr, null); |
| } |
| return nameEnvironmentAnswer; |
| } |
| |
| void initUnit(CompilationUnit unit) { |
| this.unit = unit; |
| } |
| |
| private void readObject(ObjectInputStream inputStream) throws ClassNotFoundException, IOException { |
| inputStream.defaultReadObject(); |
| this.cacheToken = diskCache.transferFromStream(inputStream); |
| } |
| |
| private void writeObject(ObjectOutputStream outputStream) throws IOException { |
| outputStream.defaultWriteObject(); |
| diskCache.transferToStream(cacheToken, outputStream); |
| } |
| } |