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package com.jclark.xsl.expr;
import com.jclark.xsl.om.*;
class NodeTestExpr extends ConvertibleNodeSetExpr {
private final Pattern nodeTest;
private final ConvertibleNodeSetExpr expr;
NodeTestExpr(ConvertibleNodeSetExpr expr, Pattern nodeTest) {
this.expr = expr;
this.nodeTest = nodeTest;
}
public NodeIterator eval(Node node, final ExprContext context) throws XSLException {
final NodeIterator iter = expr.eval(node, context);
return new NodeIterator() {
public Node next() throws XSLException {
for (;;) {
Node tem = iter.next();
if (tem == null)
break;
if (nodeTest.matches(tem, context))
return tem;
}
return null;
}
};
}
int getOptimizeFlags() {
return expr.getOptimizeFlags();
}
Pattern getChildrenNodePattern() {
if (expr.getClass() == ChildAxisExpr.class)
return nodeTest;
return null;
}
}
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