| /* |
| * Copyright (c) 2009, 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 |
| * @bug 6843077 |
| * @summary test that typecasts annotation are emitted if only the cast |
| * expression is optimized away |
| * @modules jdk.jdeps/com.sun.tools.classfile |
| */ |
| |
| public class TypeCasts { |
| public static void main(String[] args) throws Exception { |
| new TypeCasts().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) { |
| Attribute attr = null; |
| Code_attribute cAttr = null; |
| |
| int index = m.attributes.getIndex(cf.constant_pool, Attribute.Code); |
| if(index!= -1) { |
| attr = m.attributes.get(index); |
| assert attr instanceof Code_attribute; |
| cAttr = (Code_attribute)attr; |
| index = cAttr.attributes.getIndex(cf.constant_pool, name); |
| if(index!= -1) { |
| attr = cAttr.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.*;"); |
| out.println("class Test { "); |
| out.println(" @Target(ElementType.TYPE_USE) @interface A { }"); |
| |
| out.println(" void emit() {"); |
| out.println(" Object o = null;"); |
| out.println(" String s = null;"); |
| |
| out.println(" String a0 = (@A String)o;"); |
| out.println(" Object a1 = (@A Object)o;"); |
| |
| out.println(" String b0 = (@A String)s;"); |
| out.println(" Object b1 = (@A Object)s;"); |
| out.println(" }"); |
| |
| out.println(" void alldeadcode() {"); |
| out.println(" Object o = null;"); |
| |
| out.println(" if (false) {"); |
| out.println(" String a0 = (@A String)o;"); |
| out.println(" }"); |
| out.println(" }"); |
| |
| 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_visibles = 0, expected_invisibles = 4; |
| int expected_all = expected_visibles + expected_invisibles; |
| |
| 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; |
| } |