| /* |
| * Copyright (c) 2010, 2013, 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.ir; |
| |
| import java.io.IOException; |
| import java.io.NotSerializableException; |
| import java.io.ObjectOutputStream; |
| import jdk.nashorn.internal.codegen.CompileUnit; |
| import jdk.nashorn.internal.ir.annotations.Immutable; |
| import jdk.nashorn.internal.ir.visitor.NodeVisitor; |
| |
| /** |
| * Node indicating code is split across classes. |
| */ |
| @Immutable |
| public class SplitNode extends LexicalContextStatement implements CompileUnitHolder { |
| private static final long serialVersionUID = 1L; |
| |
| /** Split node method name. */ |
| private final String name; |
| |
| /** Compilation unit. */ |
| private final CompileUnit compileUnit; |
| |
| /** Body of split code. */ |
| private final Block body; |
| |
| /** |
| * Constructor |
| * |
| * @param name name of split node |
| * @param body body of split code |
| * @param compileUnit compile unit to use for the body |
| */ |
| public SplitNode(final String name, final Block body, final CompileUnit compileUnit) { |
| super(body.getFirstStatementLineNumber(), body.getToken(), body.getFinish()); |
| this.name = name; |
| this.body = body; |
| this.compileUnit = compileUnit; |
| } |
| |
| private SplitNode(final SplitNode splitNode, final Block body, final CompileUnit compileUnit) { |
| super(splitNode); |
| this.name = splitNode.name; |
| this.body = body; |
| this.compileUnit = compileUnit; |
| } |
| |
| /** |
| * Get the body for this split node - i.e. the actual code it encloses |
| * @return body for split node |
| */ |
| public Block getBody() { |
| return body; |
| } |
| |
| private SplitNode setBody(final LexicalContext lc, final Block body) { |
| if (this.body == body) { |
| return this; |
| } |
| return Node.replaceInLexicalContext(lc, this, new SplitNode(this, body, compileUnit)); |
| } |
| |
| @Override |
| public Node accept(final LexicalContext lc, final NodeVisitor<? extends LexicalContext> visitor) { |
| if (visitor.enterSplitNode(this)) { |
| return visitor.leaveSplitNode(setBody(lc, (Block)body.accept(visitor))); |
| } |
| return this; |
| } |
| |
| @Override |
| public void toString(final StringBuilder sb, final boolean printType) { |
| sb.append("<split>("); |
| sb.append(compileUnit.getClass().getSimpleName()); |
| sb.append(") "); |
| body.toString(sb, printType); |
| } |
| |
| /** |
| * Get the name for this split node |
| * @return name |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Get the compile unit for this split node |
| * @return compile unit |
| */ |
| @Override |
| public CompileUnit getCompileUnit() { |
| return compileUnit; |
| } |
| |
| /** |
| * Set the compile unit for this split node |
| * @param lc lexical context |
| * @param compileUnit compile unit |
| * @return new node if changed, otherwise same node |
| */ |
| public SplitNode setCompileUnit(final LexicalContext lc, final CompileUnit compileUnit) { |
| if (this.compileUnit == compileUnit) { |
| return this; |
| } |
| return Node.replaceInLexicalContext(lc, this, new SplitNode(this, body, compileUnit)); |
| } |
| |
| private void writeObject(final ObjectOutputStream out) throws IOException { |
| // We are only serializing the AST after we run SplitIntoFunctions; no SplitNodes can remain for the |
| // serialization. |
| throw new NotSerializableException(getClass().getName()); |
| } |
| } |