## net.sf.saxon.instruct
Class LocalVariable

    java.lang.Object
      net.sf.saxon.expr.Expression
          net.sf.saxon.instruct.Instruction
              net.sf.saxon.instruct.GeneralVariable
                  net.sf.saxon.instruct.LocalVariable

All Implemented Interfaces:
  Serializable, SourceLocator, Binding, Container, EvaluableItem, SequenceIterable, TailCallReturner, InstructionInfoProvider

    public class LocalVariable

extends GeneralVariable

Handler for local xsl:variable elements in stylesheet. Not used in XQuery. In fact, the class is used only transiently in XSLT: local variables are compiled first to a LocalVariable object, and subsequently to a LetExpression.

See Also:
  Serialized Form

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression
`EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD`

Constructor Summary
`LocalVariable()`

Method Summary
`ValueRepresentation` `evaluateVariable(XPathContext c)` Evaluate the variable
`TailCall` `processLeavingTail(XPathContext context)` Process the local variable declaration

Methods inherited from class net.sf.saxon.instruct.GeneralVariable

`display, evaluateItem, getCardinality, getInstructionNameCode, getItemType, getLocalSlotNumber, getNameCode, getRequiredType, getSelectExpression, getSelectValue, getSlotNumber, getVariableFingerprint, getVariableName, init, isAssignable, isGlobal, isImplicitlyRequiredParam, isRequiredParam, isTunnelParam, iterate, iterateSubExpressions, optimize, replaceSubExpression, setAssignable, setImplicitlyRequiredParam, setNameCode, setReferenceCount, setRequiredParam, setRequiredType, setSelectExpression, setSlotNumber, setTunnel, setVariableName, simplify, typeCheck`

Methods inherited from class net.sf.saxon.instruct.Instruction
`appendItem, computeCardinality, computeSpecialProperties, createsNewNodes, evaluateAsString, getImplementationMethod, getInstructionInfo, getSourceLocator, isXSLT, process, promote`

Methods inherited from class net.sf.saxon.expr.Expression

`adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, effectiveBooleanValue, getColumnNumber, getContainingProcedure, getDependencies, getExecutable, getHostLanguage, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface javax.xml.transform.SourceLocator
`getColumnNumber, getLineNumber, getPublicId, getSystemId`

Constructor Detail

### LocalVariable

    public LocalVariable()

Method Detail

### processLeavingTail

    public TailCall processLeavingTail(XPathContext context)
                                throws XPathException

  Process the local variable declaration

  Specified by:
    `processLeavingTail` in interface `TailCallReturner`
  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:
    `XPathException`

### evaluateVariable

    public ValueRepresentation evaluateVariable(XPathContext c)
                                         throws XPathException

  Evaluate the variable

  Throws:
    `XPathException`

Copyright (C) Michael H. Kay. All rights reserved.