Package net.sf.saxon.style

Class XSLVariableDeclaration

java.lang.Object

net.sf.saxon.tree.linked.NodeImpl

net.sf.saxon.tree.linked.ParentNodeImpl

net.sf.saxon.tree.linked.ElementImpl

net.sf.saxon.style.StyleElement

net.sf.saxon.style.XSLGeneralVariable

net.sf.saxon.style.XSLVariableDeclaration

All Implemented Interfaces:

java.io.Serializable, javax.xml.transform.Source, javax.xml.transform.SourceLocator, LocationProvider, SaxonLocator, PullEvent, Container, VariableDeclaration, FingerprintedNode, Item<NodeInfo>, MutableNodeInfo, NamespaceResolver, NodeInfo, ValueRepresentation<NodeInfo>, StylesheetProcedure, InstructionInfo, SiblingCountingNode, org.xml.sax.Locator

Direct Known Subclasses:

XSLParam, XSLVariable

public abstract class XSLVariableDeclaration
extends XSLGeneralVariable
implements VariableDeclaration, StylesheetProcedure

Generic class for xsl:variable and xsl:param elements.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.List	references

Fields inherited from class net.sf.saxon.tree.linked.NodeImpl

NODE_LETTER

Fields inherited from interface net.sf.saxon.om.NodeInfo

ALL_NAMESPACES, IS_DTD_TYPE, IS_NILLED, LOCAL_NAMESPACES, NO_NAMESPACES

Fields inherited from class net.sf.saxon.style.StyleElement

ACTION_COMPILE, ACTION_FIXUP, ACTION_OPTIMIZE, ACTION_PROCESS_ATTRIBUTES, ACTION_TYPECHECK, ACTION_VALIDATE, actionsCompleted, defaultCollationName, defaultXPathNamespace, extensionNamespaces, REPORT_ALWAYS, REPORT_IF_INSTANTIATED, REPORT_UNLESS_FALLBACK_AVAILABLE, REPORT_UNLESS_FORWARDS_COMPATIBLE, reportingCircumstances, staticContext, validationError, version, YES_NO

Fields inherited from class net.sf.saxon.style.XSLGeneralVariable

assignable, compiledVariable, constantText, global, implicitlyRequiredParam, redundant, requiredParam, requiredType, select, slotManager, tunnel

Constructor Summary

Constructors

Constructor	Description
XSLVariableDeclaration()

Method Summary

Modifier and Type	Method	Description
protected void	fixupBinding(Binding binding)	Notify all variable references of the Binding instruction
void	fixupReferences()	Notify all references to this variable of the data type
GeneralVariable	getCompiledVariable()	Get the compiled variable
abstract SequenceType	getRequiredType()	Get the static type of the variable.
SlotManager	getSlotManager()	Get the SlotManager associated with this stylesheet construct.
int	getSlotNumber()	Get the slot number allocated to this variable (its position in the stackframe)
protected void	index(Declaration decl, PrincipalStylesheetModule top)	Method supplied by declaration elements to add themselves to a stylesheet-level index
boolean	isDeclaration()	Ask whether this node is a declaration, that is, a permitted child of xsl:stylesheet (including xsl:include and xsl:import).
boolean	isInstruction()	Determine whether this node is an instruction.
void	optimize(Declaration declaration)	Optimize the stylesheet construct
void	registerReference(BindingReference ref)	Method called by VariableReference to register the variable reference for subsequent fixup
protected void	setReferenceCount(GeneralVariable var)	Set the number of references to this variable.
void	setSlotNumber(int slot)	Allocate a slot number to this variable
void	validate(Declaration decl)	Check that the variable is not already declared, and allocate a slot number

Methods inherited from class net.sf.saxon.tree.linked.ElementImpl

addAttribute, addNamespace, copy, delete, fixupInsertedNamespaces, generateId, getAttributeList, getAttributeValue, getAttributeValue, getBaseURI, getColumnNumber, getDeclaredNamespaces, getDocumentRoot, getLineNumber, getNameCode, getNamespaceList, getNodeKind, getPrefixForURI, getRoot, getSchemaType, getSystemId, getTypeAnnotation, getURIForPrefix, gsetAttributeCollection, initialise, isId, isNilled, iteratePrefixes, removeAttribute, removeTypeAnnotation, rename, replaceStringValue, setAttributeList, setLocation, setNameCode, setNamespaceDeclarations, setNamespaceList, setSystemId, setTypeAnnotation

Methods inherited from interface net.sf.saxon.trace.InstructionInfo

getLineNumber, getSystemId

Methods inherited from interface org.xml.sax.Locator

getColumnNumber, getPublicId

Methods inherited from class net.sf.saxon.tree.linked.NodeImpl

atomize, compareOrder, equals, getConfiguration, getDisplayName, getDocumentNumber, getFingerprint, getLocalPart, getNamePool, getNextInDocument, getNextSibling, getParent, getPhysicalRoot, getPrefix, getPreviousInDocument, getPreviousSibling, getPublicId, getRawParent, getSiblingPosition, getTypedValue, getURI, insertSiblings, isDeleted, isIdref, isSameNodeInfo, iterateAxis, iterateAxis, newBuilder, replace, setRawParent, setSiblingPosition

Methods inherited from interface net.sf.saxon.om.NodeInfo

hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from class net.sf.saxon.tree.linked.ParentNodeImpl

addChild, compact, enumerateChildren, getFirstChild, getLastChild, getNthChild, getNumberOfChildren, getRawSequenceNumber, getSequenceNumber, getStringValue, getStringValueCS, hasChildNodes, insertChildren, insertChildrenAt, removeChild, replaceChildrenAt, setChildren, setRawSequenceNumber

Methods inherited from interface javax.xml.transform.Source

isEmpty

Methods inherited from interface javax.xml.transform.SourceLocator

getColumnNumber, getPublicId

Methods inherited from class net.sf.saxon.style.StyleElement

allocateLocationId, allocatePatternSlots, allocateSlots, bindLocalVariable, bindVariable, checkAttributeValue, checkEmpty, checkSortComesFirst, checkTopLevel, checkUnknownAttribute, compile, compileDeclaration, compileError, compileError, compileError, compileError, compileSequenceConstructor, compileWarning, compileWarning, definesExcludedNamespace, definesExtensionElement, fallbackProcessing, forwardsCompatibleModeIsEnabled, getAttributeSets, getAttributeValue, getColumnNumber, getCommonChildItemType, getContainerGranularity, getContainingSlotManager, getContainingStylesheet, getDefaultCollationName, getDefaultXPathNamespace, getEffectiveVersion, getExecutable, getHostLanguage, getLastChildInstruction, getLineNumber, getLocationProvider, getNamespaceResolver, getObjectName, getPreparedStylesheet, getPrincipalStylesheetModule, getProcessorVersion, getProperties, getProperty, getSchemaType, getStaticContext, getSystemId, getTypeAnnotation, getWithParamInstructions, isActionCompleted, isExcludedNamespace, isExplaining, isExtensionNamespace, isPermittedChild, issueWarning, issueWarning, isTopLevel, isXslt30Processor, makeAttributeValueTemplate, makeExpression, makeExpressionVisitor, makeNamespaceContext, makePattern, makeQName, makeSequenceType, makeSortKeys, makeTraceInstruction, markTailCalls, mayContainFallback, mayContainParam, processAllAttributes, processAttributes, processDefaultCollationAttribute, processDefaultXPathNamespaceAttribute, processExcludedNamespaces, processExtensionElementAttribute, processStandardAttributes, processVersionAttribute, reportAbsence, seesAvuncularVariables, setActionCompleted, setObjectName, setValidationError, substituteFor, typeCheck, typeCheck, undeclaredNamespaceError, validateChildren, validateSubtree, xPath10ModeIsEnabled

Methods inherited from interface net.sf.saxon.expr.VariableDeclaration

getVariableQName

Methods inherited from class net.sf.saxon.style.XSLGeneralVariable

allowsAsAttribute, allowsRequired, allowsTunnelAttribute, allowsValue, checkAgainstRequiredType, getConstructType, getReturnedItemType, getVariableDisplayName, getVariableQName, initializeBinding, isAssignable, isGlobal, isRequiredParam, isTunnelParam, mayContainSequenceConstructor, postValidate, prepareAttributes, setRedundant

Field Detail

references

protected java.util.List references

Constructor Detail

XSLVariableDeclaration

public XSLVariableDeclaration()

Method Detail

isDeclaration

public boolean isDeclaration()

Ask whether this node is a declaration, that is, a permitted child of xsl:stylesheet (including xsl:include and xsl:import).

Overrides:

isDeclaration in class StyleElement

Returns:

true for this element

getSlotManager

public SlotManager getSlotManager()

Get the SlotManager associated with this stylesheet construct. The SlotManager contains the information needed to manage the local stack frames used by run-time instances of the code.

Specified by:

getSlotManager in interface StylesheetProcedure

Returns:

the associated SlotManager object

getSlotNumber

public int getSlotNumber()

Get the slot number allocated to this variable (its position in the stackframe)

Returns:

the allocated slot number

setSlotNumber

public void setSlotNumber(int slot)

Allocate a slot number to this variable

Parameters:

slot - the position of the variable on the local stack frame

getRequiredType

public abstract SequenceType getRequiredType()

Get the static type of the variable.

Returns:

the static type declared for the variable

registerReference

public void registerReference(BindingReference ref)

Method called by VariableReference to register the variable reference for subsequent fixup

Specified by:

registerReference in interface VariableDeclaration

Parameters:

ref - the variable reference

isInstruction

public boolean isInstruction()

Determine whether this node is an instruction.

Overrides:

isInstruction in class StyleElement

Returns:

true - it is an instruction (well, it can be, anyway)

fixupReferences

public void fixupReferences()
                     throws XPathException

Notify all references to this variable of the data type

Overrides:

fixupReferences in class StyleElement

Throws:

XPathException - if any references cannot be fixed up.

validate

public void validate(Declaration decl)
              throws XPathException

Check that the variable is not already declared, and allocate a slot number

Overrides:

validate in class XSLGeneralVariable

Parameters:

decl -

Throws:

XPathException - if any error is found during validation

fixupBinding

protected void fixupBinding(Binding binding)

Notify all variable references of the Binding instruction

Parameters:

binding - the Binding that represents this variable declaration in the executable code tree

setReferenceCount

protected void setReferenceCount(GeneralVariable var)

Set the number of references to this variable. This code is invoked only for a global variable, and only if there is at least one reference.

Overrides:

setReferenceCount in class XSLGeneralVariable

Parameters:

var - the variable

index

protected void index(Declaration decl,
                     PrincipalStylesheetModule top)
              throws XPathException

Description copied from class: StyleElement

Method supplied by declaration elements to add themselves to a stylesheet-level index

Overrides:

index in class StyleElement

Parameters:

decl - the Declaration being indexed. (This corresponds to the StyleElement object except in cases where one module is imported several times with different precedence.)

top - the outermost XSLStylesheet element

Throws:

XPathException - if any error is encountered

optimize

public void optimize(Declaration declaration)
              throws XPathException

Optimize the stylesheet construct

Specified by:

optimize in interface StylesheetProcedure

Parameters:

declaration -

Throws:

XPathException

getCompiledVariable

public GeneralVariable getCompiledVariable()

Get the compiled variable

Returns:

the compiled variable if it has been compiled, or null otherwise