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package com.jclark.xsl.expr;
import com.jclark.xsl.om.*;
abstract class ReverseAxisExpr extends AxisExpr {
ConvertibleNodeSetExpr makeDocumentOrderExpr(final ConvertibleNodeSetExpr expr) {
return new ConvertibleNodeSetExpr() {
public NodeIterator eval(Node node, ExprContext context) throws XSLException {
return reverse(expr.eval(node, context));
}
};
}
private static NodeIterator reverse(NodeIterator iter) throws XSLException {
Node nodes[] = new Node[10];
int off = nodes.length;
for (;;) {
Node node = iter.next();
if (node == null)
break;
if (off == 0) {
Node oldNodes[] = nodes;
nodes = new Node[oldNodes.length * 2];
System.arraycopy(oldNodes, 0, nodes, oldNodes.length, oldNodes.length);
off = oldNodes.length;
}
nodes[--off] = node;
}
return new ArrayNodeIterator(nodes, off, nodes.length);
}
}
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