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// Find break or continue inside try..finally in all scripts 33// in a given directory (recursively). If no directory is specified 34// the current working directory is scanned for scripts. 35 36if (arguments.length == 0) { 37 arguments[0] = "."; 38} 39 40var File = Java.type("java.io.File"); 41var file = new File(arguments[0]); 42if (!file.exists()) { 43 print(arguments[0] + " is neither a directory nor a file"); 44 exit(1); 45} 46 47var Files = Java.type("java.nio.file.Files"); 48var Parser = Java.type("jdk.nashorn.api.tree.Parser"); 49var SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1"); 50 51var parser = Parser.create("-scripting", "--const-as-var"); 52 53function checkFile(file) { 54 // print("checking " + file); 55 var ast = parser.parse(file, print); 56 if (!ast) { 57 return; 58 } 59 60 // locate 'break/continue' inside try..finally 61 ast.accept(visitor = new (Java.extend(SimpleTreeVisitor)) { 62 lineMap: null, 63 inTryFinally: false, 64 65 printWarning: function(node, msg) { 66 var pos = node.startPosition; 67 var line = this.lineMap.getLineNumber(pos); 68 var column = this.lineMap.getColumnNumber(pos); 69 print(msg + " found in " + file + " @ " + line + ":" + column); 70 }, 71 72 visitBreak: function(node, extra) { 73 if (this.inTryFinally) { 74 this.printWarning(node, "break"); 75 } 76 }, 77 78 visitContinue: function(node, extra) { 79 if (this.inTryFinally) { 80 this.printWarning(node, "continue"); 81 } 82 }, 83 84 visitCompilationUnit: function(node, extra) { 85 this.lineMap = node.lineMap; 86 Java.super(visitor).visitCompilationUnit(node, extra); 87 }, 88 89 visitFunctionDeclaration: function(node, extra) { 90 var oldInTryFinally = this.inTryFinally; 91 this.inTryFinally = false; 92 try { 93 Java.super(visitor).visitFunctionDeclaration(node, extra); 94 } finally { 95 this.inTryFinally = oldInTryFinally; 96 } 97 }, 98 99 visitFunctionExpression: function(node, extra) { 100 var oldInTryFinally = this.inTryFinally; 101 this.inTryFinally = false; 102 try { 103 Java.super(visitor).visitFunctionExpression(node, extra); 104 } finally { 105 this.inTryFinally = oldInTryFinally; 106 } 107 }, 108 109 visitTry: function(node, extra) { 110 var oldInTryFinally = this.inTryFinally; 111 this.inTryFinally = (node.finallyBlock != null); 112 try { 113 Java.super(visitor).visitTry(node, extra); 114 } finally { 115 this.inTryFinally = oldInTryFinally; 116 } 117 } 118 }, null); 119} 120 121 122if (file.isDirectory()) { 123 Files.walk(file.toPath()) 124 .filter(function(p) Files.isRegularFile(p)) 125 .filter(function(p) p.toFile().name.endsWith('.js')) 126 .forEach(checkFile); 127} else { 128 checkFile(file); 129} 130