1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * - Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * - Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * - Neither the name of Oracle nor the names of its 16 * contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 // delete of scope vars is reported as error in strict mode. 33 // This script finds scripts that such deletes. Scripts in 34 // the specified directory are scanned. If no directory is 35 // specified, the current directory is scanned. 36 37 if (arguments.length == 0) { 38 arguments[0] = "."; 39 } 40 41 var File = Java.type("java.io.File"); 42 var file = new File(arguments[0]); 43 if (!file.exists()) { 44 print(arguments[0] + " is neither a directory nor a file"); 45 exit(1); 46 } 47 48 var Files = Java.type("java.nio.file.Files"); 49 var IdentifierTree = Java.type("jdk.nashorn.api.tree.IdentifierTree"); 50 var Parser = Java.type("jdk.nashorn.api.tree.Parser"); 51 var SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1"); 52 var Tree = Java.type("jdk.nashorn.api.tree.Tree"); 53 54 var parser = Parser.create("-scripting", "--const-as-var"); 55 56 function checkFile(file) { 57 // print("checking " + file); 58 var ast = parser.parse(file, print); 59 if (!ast) { 60 return; 61 } 62 63 // locate __proto__ usage and warn 64 ast.accept(visitor = new (Java.extend(SimpleTreeVisitor)) { 65 lineMap: null, 66 67 printWarning: function(node, varName) { 68 var pos = node.startPosition; 69 var line = this.lineMap.getLineNumber(pos); 70 var column = this.lineMap.getColumnNumber(pos); 71 print("WARNING: delete " + varName + " in " + file + " @ " + line + ":" + column); 72 }, 73 74 visitCompilationUnit: function(node, extra) { 75 this.lineMap = node.lineMap; 76 Java.super(visitor).visitCompilationUnit(node, extra); 77 }, 78 79 visitUnary: function(node, extra) { 80 if (node.kind == Tree.Kind.DELETE && 81 node.expression instanceof IdentifierTree) { 82 this.printWarning(node, node.expression.name); 83 } 84 Java.super(visitor).visitUnary(node, extra); 85 }, 86 87 }, null); 88 } 89 90 if (file.isDirectory()) { 91 Files.walk(file.toPath()) 92 .filter(function(p) Files.isRegularFile(p)) 93 .filter(function(p) p.toFile().name.endsWith('.js')) 94 .forEach(checkFile); 95 } else { 96 checkFile(file); 97 }