| /* |
| * 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.ast.type; |
| |
| import com.github.javaparser.ast.AllFieldsConstructor; |
| import com.github.javaparser.ast.NodeList; |
| import com.github.javaparser.ast.expr.AnnotationExpr; |
| import com.github.javaparser.ast.nodeTypes.NodeWithAnnotations; |
| import com.github.javaparser.ast.observer.ObservableProperty; |
| import com.github.javaparser.ast.visitor.GenericVisitor; |
| import com.github.javaparser.ast.visitor.VoidVisitor; |
| import java.util.Arrays; |
| import java.util.List; |
| import static com.github.javaparser.utils.Utils.assertNotNull; |
| import static java.util.stream.Collectors.joining; |
| import com.github.javaparser.ast.Node; |
| import com.github.javaparser.ast.visitor.CloneVisitor; |
| import com.github.javaparser.metamodel.NonEmptyProperty; |
| import com.github.javaparser.metamodel.UnionTypeMetaModel; |
| import com.github.javaparser.metamodel.JavaParserMetaModel; |
| import javax.annotation.Generated; |
| import com.github.javaparser.TokenRange; |
| import com.github.javaparser.resolution.types.ResolvedReferenceType; |
| import com.github.javaparser.resolution.types.ResolvedUnionType; |
| import java.util.function.Consumer; |
| import java.util.Optional; |
| |
| /** |
| * <h1>The union type</h1> |
| * Represents a set of types. A given value of this type has to be assignable to at least one of the element types. |
| * <h2>Java 1-6</h2> |
| * Does not exist. |
| * <h2>Java 7+</h2> |
| * As of Java 7 it is used in catch clauses. |
| * <pre><code> |
| * try { |
| * ... |
| * } catch(<b>IOException | NullPointerException ex</b>) { |
| * ... |
| * } |
| * </pre> |
| * |
| * The types that make up the union type are its "elements" |
| */ |
| public final class UnionType extends Type implements NodeWithAnnotations<UnionType> { |
| |
| @NonEmptyProperty |
| private NodeList<ReferenceType> elements; |
| |
| public UnionType() { |
| this(null, new NodeList<>()); |
| } |
| |
| /** |
| * This constructor is used by the parser and is considered private. |
| */ |
| @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator") |
| public UnionType(TokenRange tokenRange, NodeList<ReferenceType> elements) { |
| super(tokenRange); |
| setElements(elements); |
| customInitialization(); |
| } |
| |
| @AllFieldsConstructor |
| public UnionType(NodeList<ReferenceType> elements) { |
| this(null, elements); |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public NodeList<ReferenceType> getElements() { |
| return elements; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public UnionType setElements(final NodeList<ReferenceType> elements) { |
| assertNotNull(elements); |
| if (elements == this.elements) { |
| return (UnionType) this; |
| } |
| notifyPropertyChange(ObservableProperty.ELEMENTS, this.elements, elements); |
| if (this.elements != null) |
| this.elements.setParentNode(null); |
| this.elements = elements; |
| setAsParentNodeOf(elements); |
| return this; |
| } |
| |
| @Override |
| public UnionType setAnnotations(NodeList<AnnotationExpr> annotations) { |
| return (UnionType) super.setAnnotations(annotations); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") |
| public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) { |
| return v.visit(this, arg); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") |
| public <A> void accept(final VoidVisitor<A> v, final A arg) { |
| v.visit(this, arg); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") |
| public boolean remove(Node node) { |
| if (node == null) |
| return false; |
| for (int i = 0; i < elements.size(); i++) { |
| if (elements.get(i) == node) { |
| elements.remove(i); |
| return true; |
| } |
| } |
| return super.remove(node); |
| } |
| |
| @Override |
| public String asString() { |
| return elements.stream().map(Type::asString).collect(joining("|")); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.CloneGenerator") |
| public UnionType clone() { |
| return (UnionType) accept(new CloneVisitor(), null); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator") |
| public UnionTypeMetaModel getMetaModel() { |
| return JavaParserMetaModel.unionTypeMetaModel; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator") |
| public boolean replace(Node node, Node replacementNode) { |
| if (node == null) |
| return false; |
| for (int i = 0; i < elements.size(); i++) { |
| if (elements.get(i) == node) { |
| elements.set(i, (ReferenceType) replacementNode); |
| return true; |
| } |
| } |
| return super.replace(node, replacementNode); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public boolean isUnionType() { |
| return true; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public UnionType asUnionType() { |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public void ifUnionType(Consumer<UnionType> action) { |
| action.accept(this); |
| } |
| |
| @Override |
| public ResolvedUnionType resolve() { |
| return getSymbolResolver().toResolvedType(this, ResolvedUnionType.class); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public Optional<UnionType> toUnionType() { |
| return Optional.of(this); |
| } |
| } |