net.sf.saxon.style
Class XSLVariableDeclaration

java.lang.Object
  net.sf.saxon.tree.NodeImpl
      net.sf.saxon.tree.ElementImpl
          net.sf.saxon.tree.ElementWithAttributes
              net.sf.saxon.style.StyleElement
                  net.sf.saxon.style.XSLGeneralVariable
                      net.sf.saxon.style.XSLVariableDeclaration

All Implemented Interfaces:

Serializable, Source, SourceLocator, LocationProvider, SaxonLocator, PullEvent, Container, VariableDeclaration, FingerprintedNode, Item, NamespaceResolver, NodeInfo, ValueRepresentation, StylesheetProcedure, InstructionInfo, 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 inherited from class net.sf.saxon.style.StyleElement

REPORT_ALWAYS, REPORT_IF_INSTANTIATED, REPORT_UNLESS_FALLBACK_AVAILABLE, REPORT_UNLESS_FORWARDS_COMPATIBLE

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

NODE_LETTER

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

ALL_NAMESPACES, EMPTY_NAMESPACE_LIST, IS_DTD_TYPE, IS_NILLED, LOCAL_NAMESPACES, NO_NAMESPACES

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

EMPTY_VALUE_ARRAY

Constructor Summary

XSLVariableDeclaration()

Method Summary

void	addChild(NodeImpl node, int index) Add a child node to this node.
void	compact(int size) Compact the space used by this node
void	fixupReferences() Notify all references to this variable of the data type
NodeInfo	getFirstChild() Get the first child node of the element
NodeInfo	getLastChild() Get the last child node of the element
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)
String	getStringValue() Return the string-value of the node, that is, the concatenation of the character content of all descendent elements and text nodes.
CharSequence	getStringValueCS() Get the value of the item as a CharSequence.
boolean	hasChildNodes() Determine if the node has any children.
boolean	isInstruction() Determine whether this node is an instruction.
void	registerReference(BindingReference ref) Method called by VariableReference to register the variable reference for subsequent fixup
void	setSlotNumber(int slot) Allocate a slot number to this variable
void	validate() Check that the variable is not already declared, and allocate a slot number

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

getConstructType, getVariableDisplayName, getVariableQName, isAssignable, isGlobal, isRequiredParam, isTunnelParam, mayContainSequenceConstructor, prepareAttributes, setRedundant

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

allocatePatternSlots, allocateSlots, allocateSlots, backwardsCompatibleModeIsEnabled, bindVariable, checkEmpty, checkTopLevel, checkWithinTemplate, compile, compileSequenceConstructor, forwardsCompatibleModeIsEnabled, getAllStylesheetFunctions, getAttributeValue, getContainingSlotManager, getContainingStylesheet, getExecutable, getHostLanguage, getLineNumber, getLineNumber, getLocationProvider, getNamespaceResolver, getObjectName, getObjectName, getPrecedence, getPreparedStylesheet, getPrincipalStylesheet, getProperties, getProperty, getSchemaType, getStaticContext, getStylesheetFunction, getSystemId, getTypeAnnotation, getVersion, isExcludedNamespace, isExtensionNamespace, isTopLevel, makeExpression, makeExpressionVisitor, makeNamespaceContext, makePattern, makeQName, makeSequenceType, postValidate, replaceSubExpression, reportAbsence, setLineNumber, setObjectName, substituteFor, typeCheck, typeCheck, validateSubtree

Methods inherited from class net.sf.saxon.tree.ElementWithAttributes

copy, getAttributeList, getAttributeValue, getDeclaredNamespaces, getInScopeNamespaceCodes, getPrefixForURI, getURICodeForPrefix, getURIForPrefix, initialise, iteratePrefixes, setNamespaceDeclarations

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

generateId, getBaseURI, getDocumentRoot, getNameCode, getNodeKind, getRoot, getSystemId, setNameCode, setSystemId

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

atomize, compareOrder, equals, getColumnNumber, getConfiguration, getDisplayName, getDocumentNumber, getFingerprint, getLocalPart, getNamePool, getNextInDocument, getNextSibling, getParent, getPrefix, getPreviousInDocument, getPreviousSibling, getPublicId, getTypeAnnotation, getTypedValue, getURI, hashCode, isSameNodeInfo, iterateAxis, iterateAxis

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

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

getVariableQName

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

getSystemId

Constructor Detail

XSLVariableDeclaration

public XSLVariableDeclaration()

Method Detail

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

validate

public void validate()
              throws XPathException

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

Overrides:

validate in class XSLGeneralVariable

Throws:

XPathException

hasChildNodes

public final boolean hasChildNodes()

Determine if the node has any children.

Specified by:

hasChildNodes in interface NodeInfo

Overrides:

hasChildNodes in class NodeImpl

Returns:

true if the node has any children, false if the node has no children.

getFirstChild

public final NodeInfo getFirstChild()

Get the first child node of the element

Overrides:

getFirstChild in class NodeImpl

Returns:

the first child node of the required type, or null if there are no children

getLastChild

public final NodeInfo getLastChild()

Get the last child node of the element

Overrides:

getLastChild in class NodeImpl

Returns:

the last child of the element, or null if there are no children

getStringValue

public String getStringValue()

Return the string-value of the node, that is, the concatenation of the character content of all descendent elements and text nodes.

Returns:

the accumulated character content of the element, including descendant elements.

See Also:

Item.getStringValueCS()

getStringValueCS

public CharSequence getStringValueCS()

Description copied from class: NodeImpl

Get the value of the item as a CharSequence. This is in some cases more efficient than the version of the method that returns a String.

Specified by:

getStringValueCS in interface Item

Specified by:

getStringValueCS in interface ValueRepresentation

Overrides:

getStringValueCS in class NodeImpl

Returns:

the string value of the item

See Also:

Item.getStringValue()

addChild

public void addChild(NodeImpl node,
                     int index)

Add a child node to this node. For system use only. Note: normalizing adjacent text nodes is the responsibility of the caller.

Parameters:

node - the node to be added as a child of this node

index - the position where the child is to be added

compact

public void compact(int size)

Compact the space used by this node

Parameters:

size - the number of actual children