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