| /* |
| * Copyright (C) 2007-2010 JĂșlio Vilmar Gesser. |
| * Copyright (C) 2011, 2013-2016 The JavaParser Team. |
| * |
| * This file is part of JavaParser. |
| * |
| * JavaParser can be used either under the terms of |
| * a) the GNU Lesser General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * b) the terms of the Apache License |
| * |
| * You should have received a copy of both licenses in LICENCE.LGPL and |
| * LICENCE.APACHE. Please refer to those files for details. |
| * |
| * JavaParser 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 Lesser General Public License for more details. |
| */ |
| |
| package com.github.javaparser.resolution.types; |
| |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| /** |
| * A union type is defined in java as list of types separates by pipes. |
| * |
| * @author Federico Tomassetti |
| */ |
| public class ResolvedUnionType implements ResolvedType { |
| private List<ResolvedType> elements; |
| |
| public ResolvedUnionType(List<ResolvedType> elements) { |
| if (elements.size() < 2) { |
| throw new IllegalArgumentException("An union type should have at least two elements. This has " + elements.size()); |
| } |
| this.elements = new LinkedList<>(elements); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| ResolvedUnionType that = (ResolvedUnionType) o; |
| |
| return new HashSet<>(elements).equals(new HashSet<>(that.elements)); |
| } |
| |
| @Override |
| public int hashCode() { |
| return new HashSet<>(elements).hashCode(); |
| } |
| |
| @Override |
| public String describe() { |
| return String.join(" | ", elements.stream().map(ResolvedType::describe).collect(Collectors.toList())); |
| } |
| |
| @Override |
| public boolean isAssignableBy(ResolvedType other) { |
| return elements.stream().allMatch(e -> e.isAssignableBy(other)); |
| } |
| |
| @Override |
| public boolean isUnionType() { |
| return true; |
| } |
| |
| @Override |
| public ResolvedUnionType asUnionType() { |
| return this; |
| } |
| } |