jdk8-mips64-public/langtools: test/tools/javac/lambda/methodReference/BridgeMethod.java@998b10c43157 (annotated)

test/tools/javac/lambda/methodReference/BridgeMethod.java@998b10c43157 (annotated)

test/tools/javac/lambda/methodReference/BridgeMethod.java

Tue, 24 Dec 2013 09:17:37 -0800

author: ksrini
date: Tue, 24 Dec 2013 09:17:37 -0800
changeset 2227: 998b10c43157
parent 2074: dee28dd47e12
child 2525: 2eb010b6cb22
permissions: -rw-r--r--

8029230: Update copyright year to match last edit in jdk8 langtools repository for 2013
Reviewed-by: ksrini
Contributed-by: steve.sides@oracle.com

 /*
  * Copyright (c) 2011, 2013, 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.
  */
 /**
  * @test
  * @bug 8003280
  * @summary Add lambda tests
  *   Test bridge methods in certain SAM conversion
  * @compile BridgeMethod.java
  * @run main BridgeMethod
  */
 import java.lang.reflect.Method;
 import java.util.HashSet;
 import java.util.Set;
 public class BridgeMethod {
     interface H {Object m();}
     interface K<T> {void m(T t);}
     interface L extends K<String> {} //generic substitution
     interface M {void m(String s);}
     interface KM extends K<String>, M{} //generic substitution
     interface N extends H {String m();} //covariant return
     private static void assertTrue(boolean cond) {
         if (!cond)
             throw new AssertionError();
     }
     static void bar(String s) {
         System.out.println("BridgeMethod.bar(String) " + s);
     }
     String moo() {
         return "moo";
     }
     private static Set<String> setOfStringObject() {
         Set<String> s = new HashSet<>();
         s.add("java.lang.String");
         s.add("java.lang.Object");
         return s;
     }
     public static void main(String[] args) {
         L la = BridgeMethod::bar; //static reference
         la.m("hi");
         Class<? extends L> c1 = la.getClass();
         Method[] methods = c1.getDeclaredMethods();
         Set<String> types = setOfStringObject();
         System.out.println("methods in SAM conversion of L:");
         for(Method m : methods) {
             System.out.println(m.toGenericString());
             assertTrue(m.getName().equals("m"));
             Class[] parameterTypes = m.getParameterTypes();
             assertTrue(parameterTypes.length == 1);
             assertTrue(types.remove(parameterTypes[0].getName()));
         }
         assertTrue(types.isEmpty() || (types.size() == 1 && types.contains("java.lang.String")));
         KM km = BridgeMethod::bar;
         //km.m("hi"); //will be uncommented when CR7028808 fixed
         Class<? extends KM> c2 = km.getClass();
         methods = c2.getDeclaredMethods();
         types = setOfStringObject();
         System.out.println("methods in SAM conversion of KM:");
         for(Method m : methods) {
             System.out.println(m.toGenericString());
             assertTrue(m.getName().equals("m"));
             Class<?>[] parameterTypes = m.getParameterTypes();
             assertTrue(parameterTypes.length == 1);
             assertTrue(types.remove(parameterTypes[0].getName()));
         }
         assertTrue(types.isEmpty());
         N n = new BridgeMethod()::moo; //instance reference
         assertTrue( n.m().equals("moo") );
         assertTrue( ((H)n).m().equals("moo") );
         Class<? extends N> c3 = n.getClass();
         methods = c3.getDeclaredMethods();
         types = setOfStringObject();
         System.out.println("methods in SAM conversion of N:");
         for(Method m : methods) {
             System.out.println(m.toGenericString());
             if (m.getName().equals("m")) {
                 Class<?> returnType = m.getReturnType();
                 assertTrue(types.remove(returnType.getName()));
             }
         }
         assertTrue(types.size() == 1); //there's a bridge
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/lambda/methodReference/BridgeMethod.java@998b10c43157 (annotated)

test/tools/javac/lambda/methodReference/BridgeMethod.java