8055199: Tidy up Nashorn codebase for code standards (August 2014)
Reviewed-by: hannesw, lagergren
#// Usage: jjs -scripting -fx astviewer.js -- <scriptfile>/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Oracle nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */if (!$OPTIONS._fx) { print("Usage: jjs -scripting -fx astviewer.js -- <.js file>"); exit(1);}// Using JavaFX from Nashorn. See also:// http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/javafx.html// This example shows AST of a script file as a JavaFX// tree view in a window. If no file is specified, AST of// this script file is shown. This script demonstrates// 'load' function, JavaFX support by -fx, readFully function// in scripting mode.// JavaFX classes usedvar StackPane = Java.type("javafx.scene.layout.StackPane");var Scene = Java.type("javafx.scene.Scene");var TreeItem = Java.type("javafx.scene.control.TreeItem");var TreeView = Java.type("javafx.scene.control.TreeView");// Create a javafx TreeItem to view a AST nodefunction treeItemForASTNode(ast, name) { var item = new TreeItem(name); for (var prop in ast) { var node = ast[prop]; if (typeof node == 'object') { if (node == null) { // skip nulls continue; } if (Array.isArray(node) && node.length == 0) { // skip empty arrays continue; } var subitem = treeItemForASTNode(node, prop); } else { var subitem = new TreeItem(prop + ": " + node); } item.children.add(subitem); } return item;}// do we have a script file passed? if not, use current scriptvar sourceName = arguments.length == 0? __FILE__ : arguments[0];// load parser.js from nashorn resourcesload("nashorn:parser.js");// read the full content of the file and parse it// to get AST of the script specifiedvar ast = parse(readFully(sourceName));// JavaFX start methodfunction start(stage) { stage.title = "AST Viewer"; var rootItem = treeItemForASTNode(ast, sourceName); var tree = new TreeView(rootItem); var root = new StackPane(); root.children.add(tree); stage.scene = new Scene(root, 300, 450); stage.show();}