net.sf.saxon.expr.instruct
Interface TailCall
- All Known Implementing Classes:
- CallTemplate.CallTemplatePackage
public interface TailCall
Interface representing a Tail Call. This is a package of information passed back by a called
instruction to its caller, representing a call (and its arguments) that needs to be made
by the caller. This saves stack space by unwinding the stack before making the call.
Method Summary |
TailCall |
processLeavingTail()
Process this TailCall (that is, executed the template call that is packaged in this
object). |
processLeavingTail
TailCall processLeavingTail()
throws XPathException
- Process this TailCall (that is, executed the template call that is packaged in this
object). This may return a further TailCall, which should also be processed: this
is the mechanism by which a nested set of recursive calls is converted into an iteration.
- Returns:
- a further TailCall, if the recursion continues, or null, indicating that the
recursion has terminated.
- Throws:
XPathException
- if any error occurs processing the tail call
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