package net.sourceforge.phpdt.internal.compiler.ast;

import java.util.List;
import java.util.ArrayList;

/**
 * Any class access.
 * @author Matthieu Casanova
 */
public class ClassAccess extends AbstractSuffixExpression {

  public static final int STATIC = 0;
  public static final int NORMAL = 1;

  public Expression prefix;
  public Expression suffix;
  public int type;

  public ClassAccess(final Expression prefix,
                     final Expression suffix,
                     final int type) {
    super(prefix.sourceStart, suffix.sourceEnd);
    this.prefix = prefix;
    this.suffix = suffix;
    this.type = type;
  }

  public String toStringOperator() {
    switch (type) {
      case STATIC : return "::"; //$NON-NLS-1$
      case NORMAL : return "->"; //$NON-NLS-1$
    }
    return "unknown operator"; //$NON-NLS-1$
  }

  /**
   * Return the expression as String.
   * @return the expression
   */
  public String toStringExpression() {
    final StringBuffer buff = new StringBuffer();
    buff.append(prefix.toStringExpression());
    buff.append(toStringOperator());
    buff.append(suffix.toStringExpression());
    return buff.toString();
  }

          /**
   * Get the variables from outside (parameters, globals ...)
   * @return the variables from outside
   */
  public List getOutsideVariable() {
    return new ArrayList();
  }

  /**
   * get the modified variables.
   * @return the variables from we change value
   */
  public List getModifiedVariable() {
    return new ArrayList();
  }

  /**
   * Get the variables used.
   * @return the variables used
   */
  public List getUsedVariable() {
    return prefix.getUsedVariable();
  }
}