| /* |
| * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.nashorn.internal.runtime; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.Serializable; |
| import java.lang.invoke.MethodType; |
| import java.util.Map; |
| import jdk.nashorn.internal.codegen.CompileUnit; |
| import jdk.nashorn.internal.codegen.FunctionSignature; |
| import jdk.nashorn.internal.codegen.types.Type; |
| import jdk.nashorn.internal.ir.FunctionNode; |
| |
| /** |
| * Class that contains information allowing us to look up a method handle implementing a JavaScript function |
| * from a generated class. This is used both for code coming from codegen and for persistent serialized code. |
| */ |
| public final class FunctionInitializer implements Serializable { |
| |
| private final String className; |
| private final MethodType methodType; |
| private final int flags; |
| private transient Map<Integer, Type> invalidatedProgramPoints; |
| private transient Class<?> code; |
| |
| private static final long serialVersionUID = -5420835725902966692L; |
| |
| /** |
| * Constructor. |
| * |
| * @param functionNode the function node |
| */ |
| public FunctionInitializer(final FunctionNode functionNode) { |
| this(functionNode, null); |
| } |
| |
| /** |
| * Constructor. |
| * |
| * @param functionNode the function node |
| * @param invalidatedProgramPoints invalidated program points |
| */ |
| public FunctionInitializer(final FunctionNode functionNode, final Map<Integer, Type> invalidatedProgramPoints) { |
| this.className = functionNode.getCompileUnit().getUnitClassName(); |
| this.methodType = new FunctionSignature(functionNode).getMethodType(); |
| this.flags = functionNode.getFlags(); |
| this.invalidatedProgramPoints = invalidatedProgramPoints; |
| |
| final CompileUnit cu = functionNode.getCompileUnit(); |
| if (cu != null) { |
| this.code = cu.getCode(); |
| } |
| |
| assert className != null; |
| } |
| |
| /** |
| * Returns the name of the class implementing the function. |
| * |
| * @return the class name |
| */ |
| public String getClassName() { |
| return className; |
| } |
| |
| /** |
| * Returns the type of the method implementing the function. |
| * |
| * @return the method type |
| */ |
| public MethodType getMethodType() { |
| return methodType; |
| } |
| |
| /** |
| * Returns the function flags. |
| * |
| * @return function flags |
| */ |
| public int getFlags() { |
| return flags; |
| } |
| |
| /** |
| * Returns the class implementing the function. |
| * |
| * @return the class |
| */ |
| public Class<?> getCode() { |
| return code; |
| } |
| |
| /** |
| * Set the class implementing the function |
| * @param code the class |
| */ |
| void setCode(final Class<?> code) { |
| // Make sure code has not been set and has expected class name |
| if (this.code != null) { |
| throw new IllegalStateException("code already set"); |
| } |
| assert className.equals(code.getTypeName().replace('.', '/')) : "unexpected class name"; |
| this.code = code; |
| } |
| |
| /** |
| * Returns the map of invalidated program points. |
| * |
| * @return invalidated program points |
| */ |
| public Map<Integer, Type> getInvalidatedProgramPoints() { |
| return invalidatedProgramPoints; |
| } |
| |
| private void writeObject(final ObjectOutputStream out) throws IOException { |
| out.defaultWriteObject(); |
| Type.writeTypeMap(invalidatedProgramPoints, out); |
| } |
| |
| private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException { |
| in.defaultReadObject(); |
| invalidatedProgramPoints = Type.readTypeMap(in); |
| } |
| } |