author | jlahoda |
Thu, 28 Jun 2018 10:05:39 +0200 | |
changeset 50867 | e84038f37713 |
parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* - Neither the name of Oracle nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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/** |
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* Nashorn project uses "final" modifier for method parameters |
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* (like 'val' of Scala). This tool finds method parameters that |
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* miss final modifier. |
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*/ |
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// Usage: jjs -J-Djava.ext.dirs=<your_nashorn_jar_dir> find_nonfinals.js |
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var Class = Java.type("java.lang.Class"); |
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var System = Java.type("java.lang.System"); |
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var Thread = Java.type("java.lang.Thread"); |
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var File = Java.type("java.io.File"); |
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var JarFile = Java.type("java.util.jar.JarFile"); |
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var Modifier = Java.type("java.lang.reflect.Modifier"); |
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// locate nashorn.jar from java.ext.dirs |
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function findNashorn() { |
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var paths = System.getProperty("java.ext.dirs").split(File.pathSeparator); |
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for each (var p in paths) { |
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var nashorn = p + File.separator + "nashorn.jar"; |
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if (new File(nashorn).exists()) { |
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return nashorn; |
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} |
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} |
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} |
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// analyze a single Class and print info on non-final parameters |
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function analyzeClass(cls) { |
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var methods = cls.getDeclaredMethods(); |
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for each (var method in methods) { |
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var methodModifiers = method.modifiers; |
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if (Modifier.isAbstract(methodModifiers) || Modifier.isNative(methodModifiers)) { |
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continue; |
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} |
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// this requires -parameters option when compiling java sources |
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var params = method.parameters; |
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for each (var p in params) { |
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var modifiers = p.modifiers; |
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if (!Modifier.isFinal(modifiers)) { |
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if (! method.name.startsWith("access$")) { |
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print(method); |
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print(" ->", p); |
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} |
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} |
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} |
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} |
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} |
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var jarFile = findNashorn(); |
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var ctxtLoader = Thread.currentThread().contextClassLoader; |
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// load each class and use reflection to analyze each Class |
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new JarFile(jarFile).stream().forEach( |
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function(entry) { |
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var name = entry.name; |
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if (name.endsWith(".class")) { |
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var clsName = name.substring(0, name.lastIndexOf('.class')); |
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clsName = clsName.replace(/\//g, '.'); |
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try { |
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// don't initialize to avoid for possible initialization errors |
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var cls = Class.forName(clsName, false, ctxtLoader); |
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analyzeClass(cls); |
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} catch (e) { |
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// print exception and continue analysis for other classes |
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print("Failed to analyze " + clsName); |
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e.printStackTrace(); |
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} |
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} |
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} |
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) |