| /* |
| * Copyright (c) 2014, 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. |
| */ |
| |
| /** |
| * Nashorn project uses "final" modifier for method parameters |
| * (like 'val' of Scala). This tool finds method parameters that |
| * miss final modifier. |
| */ |
| |
| // Usage: jjs -J-Djava.ext.dirs=<your_nashorn_jar_dir> find_nonfinals.js |
| |
| var Class = Java.type("java.lang.Class"); |
| var System = Java.type("java.lang.System"); |
| var Thread = Java.type("java.lang.Thread"); |
| var File = Java.type("java.io.File"); |
| var JarFile = Java.type("java.util.jar.JarFile"); |
| var Modifier = Java.type("java.lang.reflect.Modifier"); |
| |
| // locate nashorn.jar from java.ext.dirs |
| function findNashorn() { |
| var paths = System.getProperty("java.ext.dirs").split(File.pathSeparator); |
| for each (var p in paths) { |
| var nashorn = p + File.separator + "nashorn.jar"; |
| if (new File(nashorn).exists()) { |
| return nashorn; |
| } |
| } |
| } |
| |
| // analyze a single Class and print info on non-final parameters |
| function analyzeClass(cls) { |
| var methods = cls.getDeclaredMethods(); |
| for each (var method in methods) { |
| var methodModifiers = method.modifiers; |
| if (Modifier.isAbstract(methodModifiers) || Modifier.isNative(methodModifiers)) { |
| continue; |
| } |
| // this requires -parameters option when compiling java sources |
| var params = method.parameters; |
| for each (var p in params) { |
| var modifiers = p.modifiers; |
| if (!Modifier.isFinal(modifiers)) { |
| if (! method.name.startsWith("access$")) { |
| print(method); |
| print(" ->", p); |
| } |
| } |
| } |
| } |
| } |
| |
| var jarFile = findNashorn(); |
| var ctxtLoader = Thread.currentThread().contextClassLoader; |
| |
| // load each class and use reflection to analyze each Class |
| new JarFile(jarFile).stream().forEach( |
| function(entry) { |
| var name = entry.name; |
| if (name.endsWith(".class")) { |
| var clsName = name.substring(0, name.lastIndexOf('.class')); |
| clsName = clsName.replace(/\//g, '.'); |
| try { |
| // don't initialize to avoid for possible initialization errors |
| var cls = Class.forName(clsName, false, ctxtLoader); |
| analyzeClass(cls); |
| } catch (e) { |
| // print exception and continue analysis for other classes |
| print("Failed to analyze " + clsName); |
| e.printStackTrace(); |
| } |
| } |
| } |
| ) |