diff -r 10333b1b7402 -r 613987e37f79 nashorn/samples/breakcontinue_in_tryfinally.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nashorn/samples/breakcontinue_in_tryfinally.js Wed Mar 11 14:30:40 2015 +0530 @@ -0,0 +1,129 @@ +/* + * Copyright (c) 2015, 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. + */ + +// Find break or continue inside try..finally in all scripts +// in a given directory (recursively). If no directory is specified +// the current working directory is scanned for scripts. + +if (arguments.length == 0) { + arguments[0] = "."; +} + +var File = Java.type("java.io.File"); +var file = new File(arguments[0]); +if (!file.exists()) { + print(arguments[0] + " is neither a directory nor a file"); + exit(1); +} + +var Files = Java.type("java.nio.file.Files"); +var Parser = Java.type("jdk.nashorn.api.tree.Parser"); +var SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1"); + +var parser = Parser.create("-scripting", "--const-as-var"); + +function checkFile(file) { + // print("checking " + file); + var ast = parser.parse(file, print); + if (!ast) { + return; + } + + // locate 'break/continue' inside try..finally + ast.accept(visitor = new (Java.extend(SimpleTreeVisitor)) { + lineMap: null, + inTryFinally: false, + + printWarning: function(node, msg) { + var pos = node.startPosition; + var line = this.lineMap.getLineNumber(pos); + var column = this.lineMap.getColumnNumber(pos); + print(msg + " found in " + file + " @ " + line + ":" + column); + }, + + visitBreak: function(node, extra) { + if (this.inTryFinally) { + this.printWarning(node, "break"); + } + }, + + visitContinue: function(node, extra) { + if (this.inTryFinally) { + this.printWarning(node, "continue"); + } + }, + + visitCompilationUnit: function(node, extra) { + this.lineMap = node.lineMap; + Java.super(visitor).visitCompilationUnit(node, extra); + }, + + visitFunctionDeclaration: function(node, extra) { + var oldInTryFinally = this.inTryFinally; + this.inTryFinally = false; + try { + Java.super(visitor).visitFunctionDeclaration(node, extra); + } finally { + this.inTryFinally = oldInTryFinally; + } + }, + + visitFunctionExpression: function(node, extra) { + var oldInTryFinally = this.inTryFinally; + this.inTryFinally = false; + try { + Java.super(visitor).visitFunctionExpression(node, extra); + } finally { + this.inTryFinally = oldInTryFinally; + } + }, + + visitTry: function(node, extra) { + var oldInTryFinally = this.inTryFinally; + this.inTryFinally = (node.finallyBlock != null); + try { + Java.super(visitor).visitTry(node, extra); + } finally { + this.inTryFinally = oldInTryFinally; + } + } + }, null); +} + + +if (file.isDirectory()) { + Files.walk(file.toPath()) + .filter(function(p) Files.isRegularFile(p)) + .filter(function(p) p.toFile().name.endsWith('.js')) + .forEach(checkFile); +} else { + checkFile(file); +}