1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/samples/find_nonfinals2.js Thu Aug 21 14:03:24 2014 +0530
1.3 @@ -0,0 +1,118 @@
1.4 +#// Usage: jjs find_nonfinals2.js -- <directory>
1.5 +
1.6 +/*
1.7 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
1.8 + *
1.9 + * Redistribution and use in source and binary forms, with or without
1.10 + * modification, are permitted provided that the following conditions
1.11 + * are met:
1.12 + *
1.13 + * - Redistributions of source code must retain the above copyright
1.14 + * notice, this list of conditions and the following disclaimer.
1.15 + *
1.16 + * - Redistributions in binary form must reproduce the above copyright
1.17 + * notice, this list of conditions and the following disclaimer in the
1.18 + * documentation and/or other materials provided with the distribution.
1.19 + *
1.20 + * - Neither the name of Oracle nor the names of its
1.21 + * contributors may be used to endorse or promote products derived
1.22 + * from this software without specific prior written permission.
1.23 + *
1.24 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
1.25 + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
1.26 + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.27 + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
1.28 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.29 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.30 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.31 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
1.32 + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
1.33 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
1.34 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.35 + */
1.36 +
1.37 +// This example demonstrates Java subclassing by Java.extend
1.38 +// and javac Compiler and Tree API. This example finds method
1.39 +// parameters without "final" keyword and prints info on those.
1.40 +
1.41 +if (arguments.length == 0) {
1.42 + print("Usage: jjs find_nonfinals2.js -- <directory>");
1.43 + exit(1);
1.44 +}
1.45 +
1.46 +// Java types used
1.47 +var File = Java.type("java.io.File");
1.48 +var Files = Java.type("java.nio.file.Files");
1.49 +var FileVisitOption = Java.type("java.nio.file.FileVisitOption");
1.50 +var StringArray = Java.type("java.lang.String[]");
1.51 +var ToolProvider = Java.type("javax.tools.ToolProvider");
1.52 +var Tree = Java.type("com.sun.source.tree.Tree");
1.53 +var TreeScanner = Java.type("com.sun.source.util.TreeScanner");
1.54 +var Modifier = Java.type("javax.lang.model.element.Modifier");
1.55 +
1.56 +function checkNonFinalParams(p) {
1.57 + // get the system compiler tool
1.58 + var compiler = ToolProvider.systemJavaCompiler;
1.59 + // get standard file manager
1.60 + var fileMgr = compiler.getStandardFileManager(null, null, null);
1.61 + // Using Java.to convert script array (arguments) to a Java String[]
1.62 + var compUnits = fileMgr.getJavaFileObjects(
1.63 + Java.to(arguments, StringArray));
1.64 + // create a new compilation task
1.65 + var task = compiler.getTask(null, fileMgr, null, null, null, compUnits);
1.66 + // subclass SimpleTreeVisitor - to find non-final method params
1.67 + var NonFinalsFinder = Java.extend(TreeScanner);
1.68 +
1.69 + function printMethod(method) {
1.70 + print(method.modifiers + " "+ method.returnType + " " +
1.71 + method.name + "(" + method.parameters + ")");
1.72 + }
1.73 +
1.74 + var pkgName, clsName, compUnitName, lineMap;
1.75 + var visitor = new NonFinalsFinder() {
1.76 + visitCompilationUnit: function(compUnit, p) {
1.77 + pkgName = compUnit.packageName;
1.78 + compUnitName = compUnit.sourceFile.name;
1.79 + lineMap = compUnit.lineMap;
1.80 + return Java.super(visitor).visitCompilationUnit(compUnit, p);
1.81 + },
1.82 +
1.83 + visitClass: function(clazz, p) {
1.84 + clsName = clazz.name;
1.85 + return Java.super(visitor).visitClass(clazz, p);
1.86 + },
1.87 +
1.88 + visitMethod: function (method, p) {
1.89 + var params = method.parameters;
1.90 + for each (var p in params) {
1.91 + var modifiers = p.modifiers;
1.92 + if (! modifiers.flags.contains(Modifier.FINAL)) {
1.93 + print(compUnitName);
1.94 + print(pkgName + "." + clsName);
1.95 + printMethod(method);
1.96 + print("->", p,
1.97 + " @ " + lineMap.getLineNumber(p.pos) + ":" +
1.98 + lineMap.getColumnNumber(p.pos));
1.99 + }
1.100 + }
1.101 + }
1.102 + }
1.103 +
1.104 + for each (var cu in task.parse()) {
1.105 + cu.accept(visitor, null);
1.106 + }
1.107 +}
1.108 +
1.109 +// for each ".java" file in directory (recursively).
1.110 +function main(dir) {
1.111 + var totalCount = 0;
1.112 + Files.walk(dir.toPath(), FileVisitOption.FOLLOW_LINKS).
1.113 + forEach(function(p) {
1.114 + var name = p.toFile().absolutePath;
1.115 + if (name.endsWith(".java")) {
1.116 + checkNonFinalParams(p);
1.117 + }
1.118 + });
1.119 +}
1.120 +
1.121 +main(new File(arguments[0]));
