| /* |
| * Copyright (c) 2015, 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. |
| * |
| * 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. |
| */ |
| |
| /** |
| * Nashorn parser API usage. |
| * |
| * @test |
| * @option -scripting |
| * @run |
| */ |
| |
| function Parser() { |
| // create nashorn parser |
| this._parser = Parser.create(); |
| } |
| |
| // Java types used |
| Parser.Diagnostic = Java.type("jdk.nashorn.api.tree.Diagnostic"); |
| Parser.SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1"); |
| Parser.Tree = Java.type("jdk.nashorn.api.tree.Tree"); |
| Parser.List = Java.type("java.util.List"); |
| Parser.Enum = Java.type("java.lang.Enum"); |
| |
| // function to parse the script and return script friendly object |
| Parser.prototype.parse = function(name, script, listener) { |
| var tree = this._parser.parse(name, script, listener); |
| tree.accept(new Parser.SimpleTreeVisitor(), null); |
| return this.convert(tree); |
| } |
| |
| Parser.create = function() { |
| return Java.type("jdk.nashorn.api.tree.Parser").create(); |
| } |
| |
| // convert Nashorn parser Tree, Diagnostic as a script friendly object |
| Parser.prototype.convert = function(tree) { |
| if (!tree || typeof tree != 'object' || tree instanceof java.lang.Long) { |
| return tree; |
| } |
| |
| var obj = Object.bindProperties({}, tree); |
| var result = {}; |
| for (var i in obj) { |
| var val = obj[i]; |
| // skip these ES6 specific properties to reduce noise |
| // in the output - unless there were set to true |
| if (typeof(val) == 'boolean' && val == false) { |
| switch (i) { |
| case "computed": |
| case "static": |
| case "restParameter": |
| case "this": |
| case "super": |
| case "star": |
| case "default": |
| case "starDefaultStar": |
| case "arrow": |
| case "generator": |
| case "let": |
| case "const": |
| continue; |
| } |
| } |
| |
| if (val instanceof Parser.Tree) { |
| result[i] = this.convert(val); |
| } else if (val instanceof Parser.List) { |
| var arr = new Array(val.size()); |
| for (var j in val) { |
| arr[j] = this.convert(val[j]); |
| } |
| |
| result[i] = arr; |
| } else { |
| switch (typeof val) { |
| case 'number': |
| case 'string': |
| case 'boolean': |
| result[i] = String(val); |
| break; |
| default: |
| if (val instanceof java.lang.Long || val instanceof Parser.Enum) { |
| result[i] = String(val); |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| function processFiles(subdir) { |
| var File = Java.type("java.io.File"); |
| var files = new File(__DIR__ + subdir).listFiles(); |
| java.util.Arrays.sort(files); |
| for each (var file in files) { |
| if (file.name.endsWith(".js")) { |
| var script = readFully(file); |
| var parser = new Parser(); |
| var tree = parser.parse(subdir + "/" + file.name, script, |
| function(diagnostic) { |
| print(JSON.stringify(parser.convert(diagnostic), null, 2).replace(/\\r/g, '')); |
| print(","); |
| }); |
| |
| if (tree != null) { |
| print(JSON.stringify(tree, null, 2)); |
| print(","); |
| } |
| } |
| } |
| } |
| |
| // parse files in parsertests directory |
| function main() { |
| print("["); |
| |
| processFiles("parsertests"); |
| processFiles("parsernegativetests"); |
| |
| // parse this file first! |
| var script = readFully(__FILE__); |
| var tree = new Parser().parse("parserapi.js", script, null); |
| print(JSON.stringify(tree, null, 2)); |
| print("]"); |
| } |
| |
| main(); |