package com.jclark.xsl.expr;

import com.jclark.xsl.om.*;

class PermanentNodeSetVariant extends VariantBase {
  private final CloneableNodeIterator iter;

  PermanentNodeSetVariant(NodeIterator iter) {
    if (iter instanceof CloneableNodeIterator)
      this.iter = (CloneableNodeIterator)iter;
    else
      this.iter = new CloneableNodeIteratorImpl(iter);
  }

  public NodeIterator convertToNodeSet() {
    return (NodeIterator)iter.clone();
  }

  public Object convertToObject() {
    return iter.clone();
  }

  public String convertToString() throws XSLException {
    return Converter.toString(convertToNodeSet());
  }

  public boolean convertToBoolean() throws XSLException {
    return Converter.toBoolean(convertToNodeSet());
  }

  public double convertToNumber() throws XSLException {
    return Converter.toNumber(convertToNodeSet());
  }

  public boolean isNodeSet() { return true; }
}