jdk8-mips64-public/langtools: test/tools/javac/lambda/LambdaConv01.java@5c548a8542b8 (annotated)

test/tools/javac/lambda/LambdaConv01.java@5c548a8542b8 (annotated)

test/tools/javac/lambda/LambdaConv01.java

Thu, 27 Jun 2013 17:45:56 -0400

author: emc
date: Thu, 27 Jun 2013 17:45:56 -0400
changeset 1869: 5c548a8542b8
parent 1415: 01c9d4161882
child 2227: 998b10c43157
permissions: -rw-r--r--

8013357: javac accepts erroneous binary comparison operations
Summary: javac does not report type errors on illegal Object == primitive comparisons
Reviewed-by: abuckley, mcimadamore

 /*
  * Copyright (c) 2011, 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
  *  basic test for lambda conversion
  * @author  Brian Goetz
  * @author  Maurizio Cimadamore
  * @run main LambdaConv01
  */
 public class LambdaConv01 {
     static int assertionCount = 0;
     static void assertTrue(boolean cond) {
         assertionCount++;
         if (!cond)
             throw new AssertionError();
     }
     interface IntToInt {
       public int foo(int x);
     }
     interface IntToVoid {
       public void foo(int x);
     }
     interface VoidToInt {
       public int foo();
     }
     interface TU<T, U> {
       public T foo(U u);
     }
     public static <T, U> T exec(TU<T, U> lambda, U x) {
         return lambda.foo(x);
     }
     static {
         //Assignment conversion:
         VoidToInt f1 = ()-> 3;
         assertTrue(3 == f1.foo());
         //Covariant returns:
         TU<Number, Integer> f2 = (Integer x) -> x;
         assertTrue(3 == f2.foo(3).intValue());
         //Method resolution with boxing:
         int res = LambdaConv01.<Integer,Integer>exec((Integer x) -> x, 3);
         assertTrue(3 == res);
         //Runtime exception transparency:
         try {
             LambdaConv01.<Integer,Object>exec((Object x) -> x.hashCode(), null);
         }
         catch (RuntimeException e) {
             assertTrue(true);
         }
     }
     {
         //Assignment conversion:
         VoidToInt f1 = ()-> 3;
         assertTrue(3 == f1.foo());
         //Covariant returns:
         TU<Number, Integer> f2 = (Integer x) -> x;
         assertTrue(3 == f2.foo(3).intValue());
         //Method resolution with boxing:
         int res = LambdaConv01.<Integer,Integer>exec((Integer x) -> x, 3);
         assertTrue(3 == res);
         //Runtime exception transparency:
         try {
             LambdaConv01.<Integer,Object>exec((Object x) -> x.hashCode(), null);
         }
         catch (RuntimeException e) {
             assertTrue(true);
         }
     }
     public static void test1() {
         //Assignment conversion:
         VoidToInt f1 = ()-> 3;
         assertTrue(3 == f1.foo());
         //Covariant returns:
         TU<Number, Integer> f2 = (Integer x) -> x;
         assertTrue(3 == f2.foo(3).intValue());
         //Method resolution with boxing:
         int res = LambdaConv01.<Integer,Integer>exec((Integer x) -> x, 3);
         assertTrue(3 == res);
         //Runtime exception transparency:
         try {
             LambdaConv01.<Integer,Object>exec((Object x) -> x.hashCode(), null);
         }
         catch (RuntimeException e) {
             assertTrue(true);
         }
     }
     public void test2() {
         //Assignment conversion:
         VoidToInt f1 = ()-> 3;
         assertTrue(3 == f1.foo());
         //Covariant returns:
         TU<Number, Integer> f2 = (Integer x) -> x;
         assertTrue(3 == f2.foo(3).intValue());
         //Method resolution with boxing:
         int res = LambdaConv01.<Integer,Integer>exec((Integer x) -> x, 3);
         assertTrue(3 == res);
         //Runtime exception transparency:
         try {
             LambdaConv01.<Integer,Object>exec((Object x) -> x.hashCode(), null);
         }
         catch (RuntimeException e) {
             assertTrue(true);
         }
     }
     public static void main(String[] args) {
         test1();
         new LambdaConv01().test2();
         assertTrue(assertionCount == 16);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/lambda/LambdaConv01.java@5c548a8542b8 (annotated)

test/tools/javac/lambda/LambdaConv01.java