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 36 if (arguments.length == 0) { 37 arguments[0] = "."; 38 } 39 40 var File = Java.type("java.io.File"); 41 if (! new File(arguments[0]).isDirectory()) { 42 print(arguments[0] + " is not a directory"); 43 exit(1); 44 } 45 46 var Files = Java.type("java.nio.file.Files"); 47 var Parser = Java.type("jdk.nashorn.api.tree.Parser"); 48 var SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1"); 49 50 var parser = Parser.create("-scripting", "--const-as-var"); 51 52 function checkFile(file) { 53 // print("checking " + file); 54 var ast = parser.parse(file, print); 55 if (!ast) { 56 return; 57 } 58 59 // locate 'break/continue' inside try..finally 60 ast.accept(visitor = new (Java.extend(SimpleTreeVisitor)) { 61 lineMap: null, 62 inTryFinally: false, 63 64 printWarning: function(node, msg) { 65 var pos = node.startPosition; 66 var line = this.lineMap.getLineNumber(pos); 67 var column = this.lineMap.getColumnNumber(pos); 68 print(msg + " found in " + file + " @ " + line + ":" + column); 69 }, 70 71 visitBreak: function(node, extra) { 72 if (this.inTryFinally) { 73 this.printWarning(node, "break"); 74 } 75 }, 76 77 visitContinue: function(node, extra) { 78 if (this.inTryFinally) { 79 this.printWarning(node, "continue"); 80 } 81 }, 82 83 visitCompilationUnit: function(node, extra) { 84 this.lineMap = node.lineMap; 85 Java.super(visitor).visitCompilationUnit(node, extra); 86 }, 87 88 visitFunctionDeclaration: function(node, extra) { 89 var oldInTryFinally = this.inTryFinally; 90 this.inTryFinally = false; 91 try { 92 Java.super(visitor).visitFunctionDeclaration(node, extra); 93 } finally { 94 this.inTryFinally = oldInTryFinally; 95 } 96 }, 97 98 visitFunctionExpression: function(node, extra) { 99 var oldInTryFinally = this.inTryFinally; 100 this.inTryFinally = false; 101 try { 102 Java.super(visitor).visitFunctionExpression(node, extra); 103 } finally { 104 this.inTryFinally = oldInTryFinally; 105 } 106 }, 107 108 visitTry: function(node, extra) { 109 var oldInTryFinally = this.inTryFinally; 110 this.inTryFinally = (node.finallyBlock != null); 111 try { 112 Java.super(visitor).visitTry(node, extra); 113 } finally { 114 this.inTryFinally = oldInTryFinally; 115 } 116 } 117 }, null); 118 } 119 120 Files.walk(new File(arguments[0]).toPath()) 121 .filter(function(p) Files.isRegularFile(p)) 122 .filter(function(p) p.toFile().name.endsWith('.js')) 123 .forEach(checkFile);