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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.statement;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterators;
import org.sonar.java.ast.parser.BlockStatementListTreeImpl;
import org.sonar.java.ast.parser.JavaLexer;
import org.sonar.java.model.JavaTree;
import org.sonar.plugins.java.api.tree.CaseGroupTree;
import org.sonar.plugins.java.api.tree.CaseLabelTree;
import org.sonar.plugins.java.api.tree.StatementTree;
import org.sonar.plugins.java.api.tree.Tree;
import org.sonar.plugins.java.api.tree.TreeVisitor;

import java.util.Iterator;
import java.util.List;

public class CaseGroupTreeImpl extends JavaTree implements CaseGroupTree {
  private final List labels;
  private final List body;

  public CaseGroupTreeImpl(List labels, BlockStatementListTreeImpl body) {
    super(JavaLexer.SWITCH_BLOCK_STATEMENT_GROUP);
    this.labels = ImmutableList.builder().addAll(Preconditions.checkNotNull(labels)).build();
    this.body = Preconditions.checkNotNull(body);
  }

  @Override
  public Kind kind() {
    return Kind.CASE_GROUP;
  }

  @Override
  public List labels() {
    return labels;
  }

  @Override
  public List body() {
    return body;
  }

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

  @Override
  public Iterator childrenIterator() {
    return Iterators.concat(
      labels.iterator(),
      body.iterator());
  }

}