net.sf.saxon.instruct
Class Param

java.lang.Object
  extended bynet.sf.saxon.instruct.Instruction
      extended bynet.sf.saxon.instruct.GeneralVariable
          extended bynet.sf.saxon.instruct.DefiningVariable
              extended bynet.sf.saxon.instruct.Param
All Implemented Interfaces:
Binding, Serializable, SourceLocator

public final class Param
extends DefiningVariable

The compiled form of an xsl:param element in the stylesheet.
The xsl:param element has mandatory attribute name and optional attribute select

See Also:
Serialized Form

Field Summary
 
Fields inherited from class net.sf.saxon.instruct.DefiningVariable
anyTypeAllowed
 
Fields inherited from class net.sf.saxon.instruct.GeneralVariable
variableFingerprint
 
Fields inherited from class net.sf.saxon.instruct.Instruction
children
 
Constructor Summary
Param()
           
 
Method Summary
 TailCall processLeavingTail(XPathContext context)
          ProcessLeavingTail: called to do the real work of this instruction.
 void setConversion(Expression convertor)
           
 void setInstructionDetails(Controller controller, NamePool namePool, InstructionDetails details)
          Get the name of this instruction for diagnostic and tracing purposes
 
Methods inherited from class net.sf.saxon.instruct.DefiningVariable
evaluateVariable, getRequiredType, getSlotNumber, getVariableName, setRequiredType, setSlotNumber, setVariableName
 
Methods inherited from class net.sf.saxon.instruct.GeneralVariable
containsLocals, getResultType, getSelectExpression, getSelectValue, getVariableFingerprint, init, isAssignable, isGlobal, isRequiredParam, isTunnelParam, setAssignable, setContainsLocals, setGlobal, setRequiredParam, setSelect, setTunnel, setVariableFingerprint
 
Methods inherited from class net.sf.saxon.instruct.Instruction
assembleParams, assembleTunnelParams, getChildren, getColumnNumber, getInstructionDetails, getInstructionName, getLineNumber, getPublicId, getSystemId, getSystemId, process, processChildren, processChildrenLeavingTail, recoverableError, setChildren, setSourceLocation, styleError, styleError
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Param

public Param()
Method Detail

setConversion

public void setConversion(Expression convertor)

setInstructionDetails

public void setInstructionDetails(Controller controller,
                                  NamePool namePool,
                                  InstructionDetails details)
Get the name of this instruction for diagnostic and tracing purposes

Overrides:
setInstructionDetails in class GeneralVariable

processLeavingTail

public TailCall processLeavingTail(XPathContext context)
                            throws TransformerException
Description copied from class: Instruction
ProcessLeavingTail: called to do the real work of this instruction. This method must be implemented in each subclass. The results of the instruction are written to the current Receiver, which can be obtained via the Controller.

Specified by:
processLeavingTail in class Instruction
Parameters:
context - The dynamic context of the transformation, giving access to the current node, the current variables, etc.
Returns:
null if the instruction has completed execution; or a TailCall indicating a function call or template call that is delegated to the caller, to be made after the stack has been unwound so as to save stack space.
Throws:
TransformerException