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/*
 * SonarQube JavaScript Plugin
 * Copyright (C) 2011 SonarSource and Eriks Nukis
 * [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.javascript.model.implementations.declaration;

import com.google.common.collect.Iterators;
import com.sonar.sslr.api.AstNode;
import com.sonar.sslr.api.AstNodeType;
import org.sonar.javascript.ast.visitors.TreeVisitor;
import org.sonar.javascript.model.implementations.JavaScriptTree;
import org.sonar.javascript.model.implementations.lexical.InternalSyntaxToken;
import org.sonar.javascript.model.interfaces.Tree;
import org.sonar.javascript.model.interfaces.declaration.ScriptTree;
import org.sonar.javascript.model.interfaces.lexical.SyntaxToken;

import javax.annotation.Nullable;

import java.util.Iterator;

public class ScriptTreeImpl extends JavaScriptTree implements ScriptTree {

  private final InternalSyntaxToken shebangToken;
  private final ModuleTreeImpl items;

  public ScriptTreeImpl(@Nullable InternalSyntaxToken shebangToken, ModuleTreeImpl items, AstNode spacing, AstNode eof) {
    super(Kind.SCRIPT);

    this.shebangToken = shebangToken;
    this.items = items;

    if (shebangToken != null) {
      addChild(shebangToken);
    }
    addChild(items);
    addChild(spacing);
    addChild(eof);
  }

  @Override
  @Nullable
  public SyntaxToken shebangToken() {
    return shebangToken;
  }

  @Override
  public ModuleTreeImpl items() {
    return items;
  }

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

  @Override
  public Iterator childrenIterator() {
    return Iterators.singletonIterator(items);
  }

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