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Java example source code file (CaseNode.java)
The CaseNode.java Java example source code/* * 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 jdk.nashorn.internal.codegen.Label; import jdk.nashorn.internal.ir.annotations.Immutable; import jdk.nashorn.internal.ir.visitor.NodeVisitor; /** * IR representation of CASE clause. * Case nodes are not BreakableNodes, but the SwitchNode is */ @Immutable public final class CaseNode extends Node { /** Test expression. */ private final Expression test; /** Statements. */ private final Block body; /** Case entry label. */ private final Label entry; /** * Constructors * * @param token token * @param finish finish * @param test case test node, can be any node in JavaScript * @param body case body */ public CaseNode(final long token, final int finish, final Expression test, final Block body) { super(token, finish); this.test = test; this.body = body; this.entry = new Label("entry"); } CaseNode(final CaseNode caseNode, final Expression test, final Block body) { super(caseNode); this.test = test; this.body = body; this.entry = new Label(caseNode.entry); } @Override public boolean isTerminal() { return body.isTerminal(); } /** * Assist in IR navigation. * @param visitor IR navigating visitor. */ @Override public Node accept(final NodeVisitor<? extends LexicalContext> visitor) { if (visitor.enterCaseNode(this)) { final Expression newTest = test == null ? null : (Expression)test.accept(visitor); final Block newBody = body == null ? null : (Block)body.accept(visitor); return visitor.leaveCaseNode(setTest(newTest).setBody(newBody)); } return this; } @Override public void toString(final StringBuilder sb) { if (test != null) { sb.append("case "); test.toString(sb); sb.append(':'); } else { sb.append("default:"); } } /** * Get the body for this case node * @return the body */ public Block getBody() { return body; } /** * Get the entry label for this case node * @return the entry label */ public Label getEntry() { return entry; } /** * Get the test expression for this case node * @return the test */ public Expression getTest() { return test; } /** * Reset the test expression for this case node * @param test new test expression * @return new or same CaseNode */ public CaseNode setTest(final Expression test) { if (this.test == test) { return this; } return new CaseNode(this, test, body); } private CaseNode setBody(final Block body) { if (this.body == body) { return this; } return new CaseNode(this, test, body); } } Other Java examples (source code examples)Here is a short list of links related to this Java CaseNode.java source code file: |
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