| /* |
| * 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.expr; |
| |
| import com.github.javaparser.ast.AllFieldsConstructor; |
| import com.github.javaparser.ast.NodeList; |
| import com.github.javaparser.ast.nodeTypes.NodeWithIdentifier; |
| import com.github.javaparser.ast.nodeTypes.NodeWithTypeArguments; |
| import com.github.javaparser.ast.observer.ObservableProperty; |
| import com.github.javaparser.ast.type.Type; |
| import com.github.javaparser.ast.visitor.GenericVisitor; |
| import com.github.javaparser.ast.visitor.VoidVisitor; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Optional; |
| import static com.github.javaparser.utils.Utils.assertNonEmpty; |
| import static com.github.javaparser.utils.Utils.assertNotNull; |
| import com.github.javaparser.ast.Node; |
| import com.github.javaparser.ast.visitor.CloneVisitor; |
| import com.github.javaparser.metamodel.MethodReferenceExprMetaModel; |
| import com.github.javaparser.metamodel.JavaParserMetaModel; |
| import com.github.javaparser.metamodel.NonEmptyProperty; |
| import javax.annotation.Generated; |
| import com.github.javaparser.TokenRange; |
| import com.github.javaparser.metamodel.OptionalProperty; |
| import java.util.function.Consumer; |
| |
| /** |
| * Method reference expressions introduced in Java 8 specifically designed to simplify lambda Expressions. |
| * Note that the field "identifier", indicating the word to the right of the ::, is not always a method name, |
| * it can be "new". |
| * <br/>In <code>System.out::println;</code> the scope is System.out and the identifier is "println" |
| * <br/><code>(test ? stream.map(String::trim) : stream)::toArray;</code> |
| * <br/>In <code>Bar<String>::<Integer>new</code> the String type argument is on the scope, |
| * and the Integer type argument is on this MethodReferenceExpr. |
| * |
| * @author Raquel Pau |
| */ |
| public final class MethodReferenceExpr extends Expression implements NodeWithTypeArguments<MethodReferenceExpr>, NodeWithIdentifier<MethodReferenceExpr> { |
| |
| private Expression scope; |
| |
| @OptionalProperty |
| private NodeList<Type> typeArguments; |
| |
| @NonEmptyProperty |
| private String identifier; |
| |
| public MethodReferenceExpr() { |
| this(null, new ClassExpr(), null, "empty"); |
| } |
| |
| @AllFieldsConstructor |
| public MethodReferenceExpr(Expression scope, NodeList<Type> typeArguments, String identifier) { |
| this(null, scope, typeArguments, identifier); |
| } |
| |
| /** |
| * This constructor is used by the parser and is considered private. |
| */ |
| @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator") |
| public MethodReferenceExpr(TokenRange tokenRange, Expression scope, NodeList<Type> typeArguments, String identifier) { |
| super(tokenRange); |
| setScope(scope); |
| setTypeArguments(typeArguments); |
| setIdentifier(identifier); |
| customInitialization(); |
| } |
| |
| @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); |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public Expression getScope() { |
| return scope; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public MethodReferenceExpr setScope(final Expression scope) { |
| assertNotNull(scope); |
| if (scope == this.scope) { |
| return (MethodReferenceExpr) this; |
| } |
| notifyPropertyChange(ObservableProperty.SCOPE, this.scope, scope); |
| if (this.scope != null) |
| this.scope.setParentNode(null); |
| this.scope = scope; |
| setAsParentNodeOf(scope); |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public Optional<NodeList<Type>> getTypeArguments() { |
| return Optional.ofNullable(typeArguments); |
| } |
| |
| /** |
| * Sets the typeArguments |
| * |
| * @param typeArguments the typeArguments, can be null |
| * @return this, the MethodReferenceExpr |
| */ |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public MethodReferenceExpr setTypeArguments(final NodeList<Type> typeArguments) { |
| if (typeArguments == this.typeArguments) { |
| return (MethodReferenceExpr) this; |
| } |
| notifyPropertyChange(ObservableProperty.TYPE_ARGUMENTS, this.typeArguments, typeArguments); |
| if (this.typeArguments != null) |
| this.typeArguments.setParentNode(null); |
| this.typeArguments = typeArguments; |
| setAsParentNodeOf(typeArguments); |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public String getIdentifier() { |
| return identifier; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public MethodReferenceExpr setIdentifier(final String identifier) { |
| assertNonEmpty(identifier); |
| if (identifier == this.identifier) { |
| return (MethodReferenceExpr) this; |
| } |
| notifyPropertyChange(ObservableProperty.IDENTIFIER, this.identifier, identifier); |
| this.identifier = identifier; |
| return this; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") |
| public boolean remove(Node node) { |
| if (node == null) |
| return false; |
| if (typeArguments != null) { |
| for (int i = 0; i < typeArguments.size(); i++) { |
| if (typeArguments.get(i) == node) { |
| typeArguments.remove(i); |
| return true; |
| } |
| } |
| } |
| return super.remove(node); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.CloneGenerator") |
| public MethodReferenceExpr clone() { |
| return (MethodReferenceExpr) accept(new CloneVisitor(), null); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator") |
| public MethodReferenceExprMetaModel getMetaModel() { |
| return JavaParserMetaModel.methodReferenceExprMetaModel; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator") |
| public boolean replace(Node node, Node replacementNode) { |
| if (node == null) |
| return false; |
| if (node == scope) { |
| setScope((Expression) replacementNode); |
| return true; |
| } |
| if (typeArguments != null) { |
| for (int i = 0; i < typeArguments.size(); i++) { |
| if (typeArguments.get(i) == node) { |
| typeArguments.set(i, (Type) replacementNode); |
| return true; |
| } |
| } |
| } |
| return super.replace(node, replacementNode); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public boolean isMethodReferenceExpr() { |
| return true; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public MethodReferenceExpr asMethodReferenceExpr() { |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public void ifMethodReferenceExpr(Consumer<MethodReferenceExpr> action) { |
| action.accept(this); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public Optional<MethodReferenceExpr> toMethodReferenceExpr() { |
| return Optional.of(this); |
| } |
| } |