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/*******************************************************************************
 * Copyright (c) 2000, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler.ast;

import org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.lookup.*;

public class ImportReference extends ASTNode {

  public char[][] tokens;
  public long[] sourcePositions; //each entry is using the code : (start<<32) + end
  public int declarationEnd; // doesn't include an potential trailing comment
  public int declarationSourceStart;
  public int declarationSourceEnd;
  public int modifiers; // 1.5 addition for static imports
  public Annotation[] annotations;

  public ImportReference(
      char[][] tokens,
      long[] sourcePositions,
      boolean onDemand,
      int modifiers) {

    this.tokens = tokens;
    this.sourcePositions = sourcePositions;
    if (onDemand) {
      this.bits |= ASTNode.OnDemand;
    }
    this.sourceEnd = (int) (sourcePositions[sourcePositions.length-1] & 0x00000000FFFFFFFF);
    this.sourceStart = (int) (sourcePositions[0] >>> 32);
    this.modifiers = modifiers;
  }
  
  public boolean isStatic() {
    return (this.modifiers & ClassFileConstants.AccStatic) != 0;
  }

  /**
   * @return char[][]
   */
  public char[][] getImportName() {

    return tokens;
  }

  public StringBuffer print(int indent, StringBuffer output) {

    return print(indent, output, true);
  }

  public StringBuffer print(int tab, StringBuffer output, boolean withOnDemand) {

    /* when withOnDemand is false, only the name is printed */
    for (int i = 0; i < tokens.length; i++) {
      if (i > 0) output.append('.');
      output.append(tokens[i]);
    }
    if (withOnDemand && ((this.bits & ASTNode.OnDemand) != 0)) {
      output.append(".*"); //$NON-NLS-1$
    }
    return output;
  }

  public void traverse(ASTVisitor visitor, CompilationUnitScope scope) {
    // annotations are traversed during the compilation unit traversal using a class scope
    visitor.visit(this, scope);
    visitor.endVisit(this, scope);
  }
}
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