Mon, 02 Jul 2018 16:43:07 +0100
Merge
1 #// Usage: jjs find_nonfinals2.js -- <directory>
3 /*
4 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * - Neither the name of Oracle nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
22 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
34 // This example demonstrates Java subclassing by Java.extend
35 // and javac Compiler and Tree API. This example finds method
36 // parameters without "final" keyword and prints info on those.
38 if (arguments.length == 0) {
39 print("Usage: jjs find_nonfinals2.js -- <directory>");
40 exit(1);
41 }
43 // Java types used
44 var File = Java.type("java.io.File");
45 var Files = Java.type("java.nio.file.Files");
46 var StringArray = Java.type("java.lang.String[]");
47 var ToolProvider = Java.type("javax.tools.ToolProvider");
48 var Tree = Java.type("com.sun.source.tree.Tree");
49 var TreeScanner = Java.type("com.sun.source.util.TreeScanner");
50 var Modifier = Java.type("javax.lang.model.element.Modifier");
52 function checkNonFinalParams(p) {
53 // get the system compiler tool
54 var compiler = ToolProvider.systemJavaCompiler;
55 // get standard file manager
56 var fileMgr = compiler.getStandardFileManager(null, null, null);
57 // Using Java.to convert script array (arguments) to a Java String[]
58 var compUnits = fileMgr.getJavaFileObjects(
59 Java.to(arguments, StringArray));
60 // create a new compilation task
61 var task = compiler.getTask(null, fileMgr, null, null, null, compUnits);
62 // subclass SimpleTreeVisitor - to find non-final method params
63 var NonFinalsFinder = Java.extend(TreeScanner);
65 function printMethod(method) {
66 print(method.modifiers + " "+ method.returnType + " " +
67 method.name + "(" + method.parameters + ")");
68 }
70 var pkgName, clsName, compUnitName, lineMap;
71 var visitor = new NonFinalsFinder() {
72 visitCompilationUnit: function(compUnit, p) {
73 pkgName = compUnit.packageName;
74 compUnitName = compUnit.sourceFile.name;
75 lineMap = compUnit.lineMap;
76 return Java.super(visitor).visitCompilationUnit(compUnit, p);
77 },
79 visitClass: function(clazz, p) {
80 clsName = clazz.name;
81 return Java.super(visitor).visitClass(clazz, p);
82 },
84 visitMethod: function (method, p) {
85 var params = method.parameters;
86 for each (var p in params) {
87 var modifiers = p.modifiers;
88 if (! modifiers.flags.contains(Modifier.FINAL)) {
89 print(compUnitName);
90 print(pkgName + "." + clsName);
91 printMethod(method);
92 print("->", p,
93 " @ " + lineMap.getLineNumber(p.pos) + ":" +
94 lineMap.getColumnNumber(p.pos));
95 }
96 }
97 }
98 }
100 for each (var cu in task.parse()) {
101 cu.accept(visitor, null);
102 }
103 }
105 // for each ".java" file in directory (recursively).
106 function main(dir) {
107 var totalCount = 0;
108 Files.walk(dir.toPath()).
109 forEach(function(p) {
110 var name = p.toFile().absolutePath;
111 if (name.endsWith(".java")) {
112 checkNonFinalParams(p);
113 }
114 });
115 }
117 main(new File(arguments[0]));