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/*
* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.*;
import com.sun.tools.classfile.*;
/*
* @test Visibility
* @bug 6843077
* @summary test that type annotations are recorded in the classfile
* @modules jdk.jdeps/com.sun.tools.classfile
*/
public class Visibility {
public static void main(String[] args) throws Exception {
new Visibility().run();
}
public void run() throws Exception {
File javaFile = writeTestFile();
File classFile = compileTestFile(javaFile);
ClassFile cf = ClassFile.read(classFile);
for (Method m: cf.methods) {
test(cf, m);
}
countAnnotations();
if (errors > 0)
throw new Exception(errors + " errors found");
System.out.println("PASSED");
}
void test(ClassFile cf, Method m) {
test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);
test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);
}
// test the result of Attributes.getIndex according to expectations
// encoded in the method's name
void test(ClassFile cf, Method m, String name, boolean visible) {
int index = m.attributes.getIndex(cf.constant_pool, name);
if (index != -1) {
Attribute attr = m.attributes.get(index);
assert attr instanceof RuntimeTypeAnnotations_attribute;
RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
all += tAttr.annotations.length;
if (visible)
visibles += tAttr.annotations.length;
else
invisibles += tAttr.annotations.length;
}
}
File writeTestFile() throws IOException {
File f = new File("Test.java");
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
out.println("import java.lang.annotation.ElementType;");
out.println("import java.lang.annotation.Retention;");
out.println("import java.lang.annotation.RetentionPolicy;");
out.println("import java.lang.annotation.Target;");
out.println("abstract class Test { ");
// visible annotations: RUNTIME
out.println(" @Retention(RetentionPolicy.RUNTIME)");
out.println(" @Target(ElementType.TYPE_USE)");
out.println(" @interface A { }");
out.println(" void visible(@A Test this) { }");
// invisible annotations: CLASS
out.println(" @Retention(RetentionPolicy.CLASS)");
out.println(" @Target(ElementType.TYPE_USE)");
out.println(" @interface B { }");
out.println(" void invisible(@B Test this) { }");
// source annotations
out.println(" @Retention(RetentionPolicy.SOURCE)");
out.println(" @Target(ElementType.TYPE_USE)");
out.println(" @interface C { }");
out.println(" void source(@C Test this) { }");
// default visibility: CLASS
out.println(" @Target(ElementType.TYPE_USE)");
out.println(" @interface D { }");
out.println(" void def(@D Test this) { }");
out.println("}");
out.close();
return f;
}
File compileTestFile(File f) {
int rc = com.sun.tools.javac.Main.compile(new String[] {"-g", f.getPath() });
if (rc != 0)
throw new Error("compilation failed. rc=" + rc);
String path = f.getPath();
return new File(path.substring(0, path.length() - 5) + ".class");
}
void countAnnotations() {
int expected_all = 3, expected_visibles = 1, expected_invisibles = 2;
if (expected_all != all) {
errors++;
System.err.println("expected " + expected_all
+ " annotations but found " + all);
}
if (expected_visibles != visibles) {
errors++;
System.err.println("expected " + expected_visibles
+ " visibles annotations but found " + visibles);
}
if (expected_invisibles != invisibles) {
errors++;
System.err.println("expected " + expected_invisibles
+ " invisibles annotations but found " + invisibles);
}
}
int errors;
int all;
int visibles;
int invisibles;
}
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