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/*
 * Copyright (C) 2007-2010 Júlio 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.Range;
import com.github.javaparser.ast.AllFieldsConstructor;
import com.github.javaparser.ast.nodeTypes.NodeWithType;
import com.github.javaparser.ast.observer.ObservableProperty;
import com.github.javaparser.ast.type.ClassOrInterfaceType;
import com.github.javaparser.ast.type.Type;
import com.github.javaparser.ast.visitor.GenericVisitor;
import com.github.javaparser.ast.visitor.VoidVisitor;
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.TypeExprMetaModel;
import com.github.javaparser.metamodel.JavaParserMetaModel;
import javax.annotation.Generated;

/**
 * This class is just instantiated as scopes for MethodReferenceExpr nodes to encapsulate Types.
 * <br/>In <code>World::greet</code> the ClassOrInterfaceType "World" is wrapped in a TypeExpr
 * before it is set as the scope of the MethodReferenceExpr.
 *
 * @author Raquel Pau
 */
public class TypeExpr extends Expression implements NodeWithType<TypeExpr, Type> {

    private Type type;

    public TypeExpr() {
        this(null, new ClassOrInterfaceType());
    }

    @AllFieldsConstructor
    public TypeExpr(Type type) {
        this(null, type);
    }

    /**This constructor is used by the parser and is considered private.*/
    @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator")
    public TypeExpr(Range range, Type type) {
        super(range);
        setType(type);
        customInitialization();
    }

    @Override
    public <R, A> R accept(GenericVisitor<R, A> v, A arg) {
        return v.visit(this, arg);
    }

    @Override
    public <A> void accept(VoidVisitor<A> v, A arg) {
        v.visit(this, arg);
    }

    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
    public Type getType() {
        return type;
    }

    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
    public TypeExpr setType(final Type type) {
        assertNotNull(type);
        if (type == this.type) {
            return (TypeExpr) this;
        }
        notifyPropertyChange(ObservableProperty.TYPE, this.type, type);
        if (this.type != null)
            this.type.setParentNode(null);
        this.type = type;
        setAsParentNodeOf(type);
        return this;
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator")
    public boolean remove(Node node) {
        if (node == null)
            return false;
        return super.remove(node);
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.CloneGenerator")
    public TypeExpr clone() {
        return (TypeExpr) accept(new CloneVisitor(), null);
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator")
    public TypeExprMetaModel getMetaModel() {
        return JavaParserMetaModel.typeExprMetaModel;
    }
}