package com.jclark.xsl.expr;

import com.jclark.xsl.om.*;

class UnionExpr extends ConvertibleNodeSetExpr {
  private final NodeSetExpr expr1;
  private final NodeSetExpr expr2;

  UnionExpr(NodeSetExpr expr1, NodeSetExpr expr2) {
    this.expr1 = expr1;
    this.expr2 = expr2;
  }

  public NodeIterator eval(Node node, ExprContext context) throws XSLException {
    return new UnionNodeIterator(expr1.eval(node, context),
				 expr2.eval(node, context));
  }
}