| #// Usage: jjs find_nonfinals2.js -- <directory> |
| |
| /* |
| * 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. |
| */ |
| |
| // This example demonstrates Java subclassing by Java.extend |
| // and javac Compiler and Tree API. This example finds method |
| // parameters without "final" keyword and prints info on those. |
| |
| if (arguments.length == 0) { |
| print("Usage: jjs find_nonfinals2.js -- <directory>"); |
| exit(1); |
| } |
| |
| // Java types used |
| var File = Java.type("java.io.File"); |
| var Files = Java.type("java.nio.file.Files"); |
| var StringArray = Java.type("java.lang.String[]"); |
| var ToolProvider = Java.type("javax.tools.ToolProvider"); |
| var Tree = Java.type("com.sun.source.tree.Tree"); |
| var TreeScanner = Java.type("com.sun.source.util.TreeScanner"); |
| var Modifier = Java.type("javax.lang.model.element.Modifier"); |
| |
| function checkNonFinalParams(p) { |
| // get the system compiler tool |
| var compiler = ToolProvider.systemJavaCompiler; |
| // get standard file manager |
| var fileMgr = compiler.getStandardFileManager(null, null, null); |
| // Using Java.to convert script array (arguments) to a Java String[] |
| var compUnits = fileMgr.getJavaFileObjects( |
| Java.to(arguments, StringArray)); |
| // create a new compilation task |
| var task = compiler.getTask(null, fileMgr, null, null, null, compUnits); |
| // subclass SimpleTreeVisitor - to find non-final method params |
| var NonFinalsFinder = Java.extend(TreeScanner); |
| |
| function printMethod(method) { |
| print(method.modifiers + " "+ method.returnType + " " + |
| method.name + "(" + method.parameters + ")"); |
| } |
| |
| var pkgName, clsName, compUnitName, lineMap; |
| var visitor = new NonFinalsFinder() { |
| visitCompilationUnit: function(compUnit, p) { |
| pkgName = compUnit.packageName; |
| compUnitName = compUnit.sourceFile.name; |
| lineMap = compUnit.lineMap; |
| return Java.super(visitor).visitCompilationUnit(compUnit, p); |
| }, |
| |
| visitClass: function(clazz, p) { |
| clsName = clazz.name; |
| return Java.super(visitor).visitClass(clazz, p); |
| }, |
| |
| visitMethod: function (method, p) { |
| var params = method.parameters; |
| for each (var p in params) { |
| var modifiers = p.modifiers; |
| if (! modifiers.flags.contains(Modifier.FINAL)) { |
| print(compUnitName); |
| print(pkgName + "." + clsName); |
| printMethod(method); |
| print("->", p, |
| " @ " + lineMap.getLineNumber(p.pos) + ":" + |
| lineMap.getColumnNumber(p.pos)); |
| } |
| } |
| } |
| } |
| |
| for each (var cu in task.parse()) { |
| cu.accept(visitor, null); |
| } |
| } |
| |
| // for each ".java" file in directory (recursively). |
| function main(dir) { |
| var totalCount = 0; |
| Files.walk(dir.toPath()). |
| forEach(function(p) { |
| var name = p.toFile().absolutePath; |
| if (name.endsWith(".java")) { |
| checkNonFinalParams(p); |
| } |
| }); |
| } |
| |
| main(new File(arguments[0])); |