| /* |
| * Copyright (c) 2016, 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. |
| */ |
| |
| package selectionresolution; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| |
| /** |
| * Representation of an expected result. |
| */ |
| public interface Result { |
| public static final Result ICCE = new Exception(IncompatibleClassChangeError.class); |
| public static final Result IAE = new Exception(IllegalAccessError.class); |
| public static final Result NSME = new Exception(NoSuchMethodError.class); |
| public static final Result AME = new Exception(AbstractMethodError.class); |
| |
| // Factories |
| |
| /** |
| * Create a result that expects the given class. |
| */ |
| public static Result is(int id) { |
| return new Single(id); |
| } |
| |
| /** |
| * Create a result that expects the given classes. |
| */ |
| public static Result is(int... multiple) { |
| assert multiple.length > 0; |
| |
| if (multiple.length == 1) { |
| return new Single(multiple[0]); |
| } else { |
| return new Any(multiple); |
| } |
| } |
| |
| /** |
| * Create a result that expects the given exception to be thrown. |
| */ |
| public static Result is(Class<? extends Throwable> exType) { |
| return new Exception(exType); |
| } |
| |
| /** |
| * Create a result that expects the given exception to be thrown. |
| */ |
| public static Result is(Throwable ex) { |
| return Result.is(ex.getClass()); |
| } |
| |
| public static final Result EMPTY = new Empty(); |
| |
| /** |
| * Create an empty Result. |
| */ |
| public static Result empty() { |
| return EMPTY; |
| } |
| |
| |
| public boolean complyWith(int i); |
| public boolean complyWith(Throwable e); |
| public boolean complyWith(Result r); |
| |
| static class Empty implements Result { |
| @Override |
| public boolean complyWith(int i) { |
| return false; |
| } |
| |
| @Override |
| public boolean complyWith(Throwable e) { |
| return false; |
| } |
| |
| @Override |
| public boolean complyWith(Result r) { |
| return false; |
| } |
| } |
| |
| static class Single implements Result { |
| public int id; |
| |
| public Single(int id) { |
| this.id = id; |
| } |
| |
| @Override |
| public boolean complyWith(int i) { |
| return id == i; |
| } |
| |
| @Override |
| public boolean complyWith(Throwable e) { |
| return false; |
| } |
| |
| @Override |
| public boolean complyWith(Result r) { |
| if (r instanceof Single) { |
| return complyWith(((Single)r).id); |
| } else if (r instanceof Any) { |
| return r.complyWith(this); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (!(o instanceof Single)) return false; |
| |
| Single single = (Single) o; |
| |
| return (id == single.id); |
| } |
| |
| @Override |
| public int hashCode() { |
| return id; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuffer sb = new StringBuffer("Result=Single{"); |
| sb.append("id=").append(id); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |
| |
| static class Any implements Result { |
| public int[] ids; |
| public Any(int[] ids) { |
| this.ids = ids; |
| } |
| |
| @Override |
| public boolean complyWith(int i) { |
| return Arrays.stream(ids) |
| .anyMatch(j -> j == i); |
| } |
| |
| @Override |
| public boolean complyWith(Throwable e) { |
| return false; |
| } |
| |
| @Override |
| public boolean complyWith(Result r) { |
| if (r instanceof Single) { |
| return complyWith(((Single)r).id); |
| } |
| if (r instanceof Any) { |
| return Arrays.equals(ids, ((Any) r).ids); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| Any any = (Any) o; |
| |
| return Arrays.equals(ids, any.ids); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Arrays.hashCode(ids); |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuffer sb = new StringBuffer("Result=Any{"); |
| sb.append("ids="); |
| if (ids == null) sb.append("null"); |
| else { |
| sb.append('['); |
| for (int i = 0; i < ids.length; ++i) |
| sb.append(i == 0 ? "" : ", ").append(ids[i]); |
| sb.append(']'); |
| } |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |
| |
| static class Exception implements Result { |
| public Class<? extends Throwable> exc; |
| public Exception(Class<? extends Throwable> e) { |
| this.exc = e; |
| } |
| |
| @Override |
| public boolean complyWith(int i) { |
| return false; |
| } |
| |
| @Override |
| public boolean complyWith(Throwable e) { |
| return exc.isAssignableFrom(e.getClass()); |
| } |
| |
| @Override |
| public boolean complyWith(Result r) { |
| if (r instanceof Exception) { |
| return exc.isAssignableFrom(((Exception) r).exc); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (!(o instanceof Exception)) return false; |
| |
| Exception exception = (Exception) o; |
| |
| return exc.equals(exception.exc); |
| } |
| |
| @Override |
| public int hashCode() { |
| return exc.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuffer sb = new StringBuffer("Result=Exception{"); |
| sb.append("exc=").append(exc); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |
| } |