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/*
 * SonarQube Java
 * Copyright (C) 2012 SonarSource
 * [email protected]
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of 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.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.java.model.expression;

import com.google.common.collect.Iterators;
import com.sonar.sslr.api.AstNode;
import org.sonar.java.model.AbstractTypedTree;
import org.sonar.java.model.InternalSyntaxToken;
import org.sonar.plugins.java.api.tree.ArrayAccessExpressionTree;
import org.sonar.plugins.java.api.tree.ExpressionTree;
import org.sonar.plugins.java.api.tree.SyntaxToken;
import org.sonar.plugins.java.api.tree.Tree;
import org.sonar.plugins.java.api.tree.TreeVisitor;

import java.util.Iterator;

public class ArrayAccessExpressionTreeImpl extends AbstractTypedTree implements ArrayAccessExpressionTree {

  private ExpressionTree expression;
  private final InternalSyntaxToken openBracketToken;
  private final ExpressionTree index;
  private final InternalSyntaxToken closeBracketToken;

  public ArrayAccessExpressionTreeImpl(ExpressionTree expression, InternalSyntaxToken openBracketToken, ExpressionTree index, InternalSyntaxToken closeBracketToken) {
    this(openBracketToken, index, closeBracketToken);
    complete(expression);
  }

  public ArrayAccessExpressionTreeImpl(InternalSyntaxToken openBracketToken, ExpressionTree index, InternalSyntaxToken closeBracketToken) {
    super(Kind.ARRAY_ACCESS_EXPRESSION);

    this.openBracketToken = openBracketToken;
    this.index = index;
    this.closeBracketToken = closeBracketToken;

    addChild(openBracketToken);
    addChild((AstNode) index);
    addChild(closeBracketToken);
  }

  public ArrayAccessExpressionTreeImpl complete(ExpressionTree expression) {
    this.expression = expression;

    prependChildren((AstNode) expression);

    return this;
  }

  @Override
  public Kind getKind() {
    return Kind.ARRAY_ACCESS_EXPRESSION;
  }

  @Override
  public ExpressionTree expression() {
    return expression;
  }

  @Override
  public SyntaxToken openBracketToken() {
    return openBracketToken;
  }

  @Override
  public ExpressionTree index() {
    return index;
  }

  @Override
  public SyntaxToken closeBracketToken() {
    return closeBracketToken;
  }

  @Override
  public void accept(TreeVisitor visitor) {
    visitor.visitArrayAccessExpression(this);
  }

  @Override
  public Iterator childrenIterator() {
    return Iterators.forArray(
      expression,
      index);
  }
}