1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package compiler.compilercontrol.share.pool;
  25 
  26 import jdk.test.lib.Pair;
  27 
  28 import java.lang.reflect.Executable;
  29 import java.util.ArrayList;
  30 import java.util.List;
  31 import java.util.concurrent.Callable;
  32 import java.util.function.Predicate;
  33 import java.util.stream.Collectors;
  34 
  35 /**
  36  * This is a helper class that provides tests with methods
  37  */
  38 public class PoolHelper extends MethodHolder {
  39     private static final List<Pair<Executable, Callable<?>>> METHODS;
  40 
  41     /**
  42      * Filters only those methods who belong to Klass or its internal class
  43      * Internal and named as "method" or is a constructor
  44      */
  45     public static final Predicate<Executable> METHOD_FILTER = executable -> {
  46         String methodName = executable.getName();
  47         String className = executable.getDeclaringClass().getName();
  48         return className.matches(".*(Klass)(\\$Internal)?") &&
  49                 (methodName.equals("method") ||
  50                         methodName.equals(className)); // if method is <init>
  51     };
  52 
  53     static {
  54         METHODS = new ArrayList<>();
  55         List<MethodHolder> holders = new ArrayList<>();
  56         holders.add(new compiler.compilercontrol.share.pool.sub.Klass());
  57         holders.add(new compiler.compilercontrol.share.pool.sub.KlassDup());
  58         holders.add(new compiler.compilercontrol.share.pool.subpack.Klass());
  59         holders.add(new compiler.compilercontrol.share.pool.subpack.KlassDup());
  60         holders.add(new compiler.compilercontrol.share.pool.sub.Klass.Internal());
  61         holders.add(new compiler.compilercontrol.share.pool.subpack.KlassDup.Internal());
  62         for (MethodHolder holder : holders) {
  63             METHODS.addAll(holder.getAllMethods());
  64         }
  65     }
  66 
  67     /**
  68      * Gets all methods from the pool using specified filter
  69      *
  70      * @param filter method filter
  71      * @return pairs of Executable and appropriate Callable
  72      */
  73     public List<Pair<Executable, Callable<?>>> getAllMethods(
  74             Predicate<Executable> filter) {
  75         return getAllMethods().stream()
  76                 .filter(pair -> filter.test(pair.first))
  77                 .collect(Collectors.toList());
  78     }
  79 
  80     /**
  81      * Gets all methods from the pool
  82      *
  83      * @return pairs of Executable and appropriate Callable
  84      */
  85     @Override
  86     public List<Pair<Executable, Callable<?>>> getAllMethods() {
  87         return METHODS;
  88     }
  89 }