content: /*******************************************************************************
   * Copyright (c) 2017 Alex Xu and others.
   *
   * This program and the accompanying materials are made
   * available under the terms of the Eclipse Public License 2.0
   * which is available at https://www.eclipse.org/legal/epl-2.0/
   *
   * SPDX-License-Identifier: EPL-2.0
   * 
   * Contributors:
   *     Alex Xu - initial API and implementation
   *******************************************************************************/
  package org.eclipse.php.core.ast.nodes;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import org.eclipse.php.core.PHPVersion;
  import org.eclipse.php.core.ast.match.ASTMatcher;
  import org.eclipse.php.core.ast.visitor.Visitor;
  
  public class ReturnType extends ASTNode {
  
  	private Identifier returnType;
  
  	/**
  	 * The structural property of this node type.
  	 */
  	public static final ChildPropertyDescriptor RETURN_TYPE_PROPERTY = new ChildPropertyDescriptor(ReturnType.class,
  			"returnType", Identifier.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$
  
  	/**
  	 * A list of property descriptors (element type:
  	 * {@link StructuralPropertyDescriptor}), or null if uninitialized.
  	 */
  	private static final List<StructuralPropertyDescriptor> PROPERTY_DESCRIPTORS;
  
  	static {
  		List<StructuralPropertyDescriptor> properyList = new ArrayList<>(4);
  		properyList.add(RETURN_TYPE_PROPERTY);
  		PROPERTY_DESCRIPTORS = Collections.unmodifiableList(properyList);
  	}
  
  	public ReturnType(Identifier returnType) {
  		super(returnType.getStart(), returnType.getEnd(), returnType.ast);
  		setName(returnType);
  	}
  
  	@Override
  	public void childrenAccept(Visitor visitor) {
  		if (returnType != null) {
  			returnType.accept(visitor);
  		}
  	}
  
  	@Override
  	public void traverseTopDown(Visitor visitor) {
  		accept(visitor);
  		if (returnType != null) {
  			returnType.traverseTopDown(visitor);
  		}
  	}
  
  	@Override
  	public void traverseBottomUp(Visitor visitor) {
  		if (returnType != null) {
  			returnType.traverseBottomUp(visitor);
  		}
  		accept(visitor);
  	}
  
  	@Override
  	public void toString(StringBuilder buffer, String tab) {
  		buffer.append(tab).append("<ReturnType>\n"); //$NON-NLS-1$
  		returnType.toString(buffer, TAB + tab);
  		buffer.append("\n"); //$NON-NLS-1$
  		buffer.append(tab).append("</ReturnType>"); //$NON-NLS-1$
  	}
  
  	@Override
  	void accept0(Visitor visitor) {
  		final boolean visit = visitor.visit(this);
  		if (visit) {
  			childrenAccept(visitor);
  		}
  		visitor.endVisit(this);
  	}
  
  	@Override
  	public boolean subtreeMatch(ASTMatcher matcher, Object other) {
  		return matcher.match(this, other);
  	}
  
  	public Identifier getName() {
  		return returnType;
  	}
  
  	public void setName(Identifier returnType) {
  		this.returnType = returnType;
  		this.returnType.setParent(this, RETURN_TYPE_PROPERTY);
  	}
  
  	@Override
  	public int getType() {
  		return ASTNode.RETURN_TYPE;
  	}
  
  	@Override
  	List<StructuralPropertyDescriptor> internalStructuralPropertiesForType(PHPVersion apiLevel) {
  		return PROPERTY_DESCRIPTORS;
  	}
  
  	@Override
  	ASTNode clone0(AST target) {
  		final Identifier name = ASTNode.copySubtree(target, this.getName());
  		final ReturnType result = new ReturnType(name);
  		return result;
  	}
  
  }
  