1 /*
   2  * Copyright (c) 2005, 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 jdk.test.lib.jittester;
  25 
  26 import java.util.ArrayList;
  27 import java.util.Collection;
  28 import java.util.Iterator;
  29 import java.util.List;
  30 
  31 
  32 public class TypeUtil {
  33 
  34     public static Collection<Type> getImplicitlyCastable(Collection<Type> types, Type type) {
  35         ArrayList<Type> result = new ArrayList<>(types);
  36         Iterator<Type> iterator = result.iterator();
  37         while (iterator.hasNext()) {
  38             if (!iterator.next().canImplicitlyCastTo(type)) {
  39                 iterator.remove();
  40             }
  41         }
  42         return result;
  43     }
  44 
  45     public static Collection<Type> getExplicitlyCastable(Collection<Type> types, Type type) {
  46         ArrayList<Type> result = new ArrayList<>(types);
  47         Iterator<Type> iterator = result.iterator();
  48         while (iterator.hasNext()) {
  49             if (!iterator.next().canExplicitlyCastTo(type)) {
  50                 iterator.remove();
  51             }
  52         }
  53         return result;
  54     }
  55 
  56     public static List<Type> getMoreCapatiousThan(Collection<Type> types, BuiltInType type) {
  57         ArrayList<Type> result = new ArrayList<>();
  58         Iterator<Type> iterator = types.iterator();
  59         while (iterator.hasNext()) {
  60             try {
  61                 BuiltInType builtInType = (BuiltInType) iterator.next();
  62                 if (builtInType.isMoreCapaciousThan(type)) {
  63                     result.add(builtInType);
  64                 }
  65             } catch (Exception e) {
  66             }
  67         }
  68         return result;
  69     }
  70 
  71     public static List<Type> getLessCapatiousOrEqualThan(Collection<Type> types, BuiltInType type) {
  72         ArrayList<Type> result = new ArrayList<>();
  73         Iterator<Type> iterator = types.iterator();
  74         while (iterator.hasNext()) {
  75             try {
  76                 BuiltInType builtInType = (BuiltInType) iterator.next();
  77                 if (!builtInType.isMoreCapaciousThan(type) || builtInType.equals(type)) {
  78                     result.add(builtInType);
  79                 }
  80             } catch (Exception e) {
  81             }
  82         }
  83         return result;
  84     }
  85 }