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/*
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* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.*;
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import com.sun.tools.classfile.*;
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/*
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* @test Visibility
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* @bug 6843077
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* @summary test that type annotations are recorded in the classfile
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*/
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public class Visibility {
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public static void main(String[] args) throws Exception {
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new Visibility().run();
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}
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public void run() throws Exception {
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File javaFile = writeTestFile();
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File classFile = compileTestFile(javaFile);
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ClassFile cf = ClassFile.read(classFile);
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for (Method m: cf.methods) {
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test(cf, m);
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}
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countAnnotations();
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if (errors > 0)
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throw new Exception(errors + " errors found");
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System.out.println("PASSED");
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}
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void test(ClassFile cf, Method m) {
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test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);
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test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);
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}
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// test the result of Attributes.getIndex according to expectations
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// encoded in the method's name
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void test(ClassFile cf, Method m, String name, boolean visible) {
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int index = m.attributes.getIndex(cf.constant_pool, name);
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if (index != -1) {
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Attribute attr = m.attributes.get(index);
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assert attr instanceof RuntimeTypeAnnotations_attribute;
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RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
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all += tAttr.annotations.length;
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if (visible)
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visibles += tAttr.annotations.length;
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else
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invisibles += tAttr.annotations.length;
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}
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}
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File writeTestFile() throws IOException {
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File f = new File("Test.java");
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PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
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out.println("import java.lang.annotation.ElementType;");
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out.println("import java.lang.annotation.Retention;");
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out.println("import java.lang.annotation.RetentionPolicy;");
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out.println("import java.lang.annotation.Target;");
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out.println("abstract class Test { ");
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// visible annotations: RUNTIME
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out.println(" @Retention(RetentionPolicy.RUNTIME)");
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out.println(" @Target(ElementType.TYPE_USE)");
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out.println(" @interface A { }");
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out.println(" void visible(@A Test this) { }");
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// invisible annotations: CLASS
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out.println(" @Retention(RetentionPolicy.CLASS)");
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out.println(" @Target(ElementType.TYPE_USE)");
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out.println(" @interface B { }");
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out.println(" void invisible(@B Test this) { }");
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// source annotations
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out.println(" @Retention(RetentionPolicy.SOURCE)");
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out.println(" @Target(ElementType.TYPE_USE)");
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out.println(" @interface C { }");
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out.println(" void source(@C Test this) { }");
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// default visibility: CLASS
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out.println(" @Target(ElementType.TYPE_USE)");
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out.println(" @interface D { }");
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out.println(" void def(@D Test this) { }");
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out.println("}");
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out.close();
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return f;
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}
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File compileTestFile(File f) {
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int rc = com.sun.tools.javac.Main.compile(new String[] { "-source", "1.8", "-g", f.getPath() });
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if (rc != 0)
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throw new Error("compilation failed. rc=" + rc);
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String path = f.getPath();
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return new File(path.substring(0, path.length() - 5) + ".class");
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}
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void countAnnotations() {
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int expected_all = 3, expected_visibles = 1, expected_invisibles = 2;
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if (expected_all != all) {
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errors++;
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System.err.println("expected " + expected_all
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+ " annotations but found " + all);
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}
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if (expected_visibles != visibles) {
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errors++;
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System.err.println("expected " + expected_visibles
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+ " visibles annotations but found " + visibles);
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}
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if (expected_invisibles != invisibles) {
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errors++;
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System.err.println("expected " + expected_invisibles
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+ " invisibles annotations but found " + invisibles);
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}
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}
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int errors;
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int all;
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int visibles;
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int invisibles;
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}
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