net.sf.saxon.style

Class StyleElement

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

All Implemented Interfaces:

javax.xml.transform.Source, javax.xml.transform.SourceLocator, ActiveSource, GroundedValue, Item, MutableNodeInfo, NamespaceResolver, NodeInfo, Sequence, Location, SteppingNode, SiblingCountingNode, org.xml.sax.Locator

Direct Known Subclasses:

AbsentExtensionElement, ExtensionInstruction, IXSLRemoveAttribute, IXSLRemoveProperty, IXSLScheduleAction, IXSLSetAttribute, IXSLSetProperty, IXSLSetStyle, LiteralResultElement, SaxonChange, SaxonDeepUpdate, SaxonDelete, SaxonDo, SaxonDoctype, SaxonEntityRef, SaxonImportQuery, SaxonInsert, SaxonRename, SaxonReplace, SaxonTabulateMaps, SaxonUpdate, SaxonWhile, SQLColumn, XSLAcceptExpose, XSLAccumulator, XSLAccumulatorRule, XSLAnalyzeString, XSLApplyImports, XSLApplyTemplates, XSLAssert, XSLAttributeSet, XSLBreakOrContinue, XSLCallTemplate, XSLCatch, XSLCharacterMap, XSLChooseOrSwitch, XSLContextItem, XSLCopy, XSLCopyOf, XSLDecimalFormat, XSLDocument, XSLElement, XSLEvaluate, XSLFallback, XSLForEach, XSLForEachGroup, XSLFork, XSLFunction, XSLGeneralIncorporate, XSLGeneralVariable, XSLGlobalVariable, XSLIf, XSLImportSchema, XSLItemType, XSLIterate, XSLKey, XSLLeafNodeConstructor, XSLMap, XSLMapEntry, XSLMatch, XSLMatchingSubstring, XSLMerge, XSLMergeAction, XSLMergeSource, XSLMessage, XSLMode, XSLModuleRoot, XSLNamespaceAlias, XSLNextMatch, XSLNumber, XSLOnCompletion, XSLOtherwise, XSLOutput, XSLOutputCharacter, XSLOverride, XSLPerformSort, XSLPreserveSpace, XSLResultDocument, XSLSequence, XSLSortOrMergeKey, XSLSourceDocument, XSLTemplate, XSLTry, XSLUsePackage, XSLWhen, XSLWherePopulated

public abstract class StyleElement
extends ElementImpl

Abstract superclass for all element nodes in the stylesheet.

Note: this class implements Locator. The element retains information about its own location in the stylesheet, which is useful when an XSLT static error is found.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StyleElement.OnFailure

Field Summary

Fields

Modifier and Type	Field and Description
static int	ACTION_COMPILE
static int	ACTION_FIXUP
static int	ACTION_OPTIMIZE
static int	ACTION_PROCESS_ATTRIBUTES
static int	ACTION_TYPECHECK
static int	ACTION_VALIDATE
protected int	actionsCompleted
protected java.lang.String	defaultCollationName
protected StructuredQName	defaultMode
protected java.lang.String	defaultXPathNamespace
protected boolean	expandText
protected java.lang.String[]	extensionNamespaces
protected StyleElement.OnFailure	reportingCircumstances
protected ExpressionContext	staticContext
protected XmlProcessingIncident	validationError
protected int	version
static java.lang.String[]	YES_NO

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

NODE_LETTER

Constructor Summary

Constructors

Constructor and Description
StyleElement() Constructor

Method Summary

Modifier and Type	Method and Description
protected Location	allocateLocation() Allocate a location
protected Expression	arrayToSequence(Expression arrayExpr) Adapt an expression that returns an array to one that returns a representation of the array as a sequence of single-entry maps, as required for the proposed XSLT 4.0 xsl:for-each/iterate instructions with an "array" attribute
SourceBinding	bindLocalVariable(StructuredQName qName) Bind a variable reference used in this element to the compiled form of the XSLVariable element in which it is declared, considering only local variables and params
SourceBinding	bindVariable(StructuredQName qName) Bind a variable used in this element to the compiled form of the XSLVariable element in which it is declared
void	checkEmpty() Convenience method to check that the stylesheet element is empty
void	checkTopLevel(java.lang.String errorCode, boolean allowOverride) Convenience method to check that the stylesheet element is at the top level (that is, as a child of xsl:stylesheet or xsl:transform)
protected void	checkUnknownAttribute(NodeName nc) Check whether an unknown attribute is permitted.
Expression	compile(Compilation compilation, ComponentDeclaration decl) Compile the instruction on the stylesheet tree into an executable instruction for use at run-time.
void	compileDeclaration(Compilation compilation, ComponentDeclaration decl) Compile a declaration in the stylesheet tree for use at run-time.
void	compileError(java.lang.String message) Report a static error in the stylesheet
void	compileError(java.lang.String message, java.lang.String errorCode) Compile time error, specifying an error code
void	compileError(java.lang.String message, java.lang.String errorCode, Location loc)
void	compileError(java.lang.String message, StructuredQName errorCode) Compile time error, specifying an error code
void	compileError(XmlProcessingError error) Report an error with diagnostic information
void	compileError(XPathException err)
void	compileErrorInAttribute(java.lang.String message, java.lang.String errorCode, java.lang.String attributeName) Compile time error, specifying an error code and the name of the attribute that is in error.
Expression	compileSequenceConstructor(Compilation compilation, ComponentDeclaration decl, boolean includeParams) Compile the children of this instruction on the stylesheet tree, adding the subordinate instructions to the parent instruction on the execution tree.
Expression	compileSequenceConstructor(Compilation compilation, ComponentDeclaration decl, SequenceIterator iter, boolean includeParams) Compile the children of this instruction on the stylesheet tree, adding the subordinate instructions to the parent instruction on the execution tree.
void	compileWarning(java.lang.String message, java.lang.String errorCode)
void	compileWarning(java.lang.String message, java.lang.String errorCode, Location location)
void	compileWarning(java.lang.String message, StructuredQName errorCode)
void	fixupReferences() Fix up references from XPath expressions.
protected java.lang.String	generateId()
java.lang.String	getAttributeValue(java.lang.String clarkName) Get an attribute value given the Clark name of the attribute (that is, the name in {uri}local format).
java.lang.String	getBaseURI() Get the base URI of the element, which acts as the static base URI for XPath expressions defined on this element.
SourceBinding	getBindingInformation(StructuredQName name) Ask whether this element contains a binding for a variable with a given name; and if it does, return the source binding information
Compilation	getCompilation()
Configuration	getConfiguration() Get the configuration
StylesheetPackage	getContainingPackage() Get the containing package (the principal stylesheet module of the package in which this XSLT element appears)
SlotManager	getContainingSlotManager() Get the SlotManager for the containing Procedure definition
Visibility	getDeclaredVisibility() Get the visibility of the component.
protected java.lang.String	getDefaultCollationName() Get the default collation for this stylesheet element.
java.lang.String	getDefaultXPathNamespace() Get the default XPath namespace for elements and types
NamespaceResolver	getNamespaceResolver() Get the namespace context of the instruction.
StructuredQName	getObjectName() Get a name identifying the object of the expression, for example a function name, template name, variable name, key name, element name, etc.
StylesheetPackage	getPackageData()
PrincipalStylesheetModule	getPrincipalStylesheetModule() Get the principal stylesheet module of the package in which this XSLT element appears
java.util.Iterator<java.lang.String>	getProperties() Get an iterator over all the properties available.
SchemaType	getSchemaType(java.lang.String typeAtt) Get the Schema type definition for a type named in the stylesheet (in a "type" attribute).
ExpressionContext	getStaticContext() Get the static context for expressions on this element
ExpressionContext	getStaticContext(StructuredQName attributeName)
SimpleType	getTypeAnnotation(SchemaType schemaType) Get the type annotation to use for a given schema type
StylesheetPackage	getUsedPackage() Assuming this is an xsl:use-package element, find the package to which it refers.
Visibility	getVisibility() Get the visibility of the component.
WithParam[]	getWithParamInstructions(Expression parent, Compilation compilation, ComponentDeclaration decl, boolean tunnel) Get the list of xsl:with-param elements for a calling element (apply-templates, call-template, apply-imports, next-match).
Actor	getXslOriginal(int componentKind) Check that a reference to xsl:original appears within an xsl:override element, and that the name of the containing component matches the name of a component in the used stylesheet package; return the component in that package with matching symbolic name
protected SourceBinding	hasImplicitBinding(StructuredQName name) Ask whether this particular element implicitly binds a given variable (used for xsl:accumulator-rule)
void	index(ComponentDeclaration decl, PrincipalStylesheetModule top) Method supplied by declaration elements to add themselves to a stylesheet-level index
protected void	invalidAttribute(java.lang.String attributeName, java.lang.String allowedValues)
boolean	isDeclaration() Ask whether this node is a declaration, that is, a permitted child of xsl:stylesheet (including xsl:include and xsl:import).
protected boolean	isExtensionAttributeAllowed(java.lang.String attribute) Ask if an extension attribute is allowed; if no Professional Edition license is available, issue a warning saying the attribute is ignored, and return false
boolean	isExtensionNamespace(java.lang.String uri) Check whether a namespace uri defines an extension element.
boolean	isInstruction() Ask whether this node is an instruction.
static boolean	isNo(java.lang.String s) Ask whether an attribute is "no" or one of its accepted synonyms
protected boolean	isPermittedChild(StyleElement child) Check whether a given child is permitted for this element.
boolean	isSchemaAware() Ask whether the code is compiled in schema-aware mode
protected void	issueWarning(java.lang.String message, javax.xml.transform.SourceLocator locator) Report a warning to the error listener
protected void	issueWarning(XPathException error) Report a warning to the error listener
boolean	isTopLevel() Test whether this is a top-level element
protected boolean	isWithinDeclaredStreamableConstruct()
static boolean	isYes(java.lang.String s) Ask whether an attribute is "yes" or one of its accepted synonyms
protected Expression	makeAttributeValueTemplate(java.lang.String expression, AttributeInfo att) Make an attribute value template in the context of this stylesheet element
Expression	makeExpression(java.lang.String expression, AttributeInfo att) Compile an XPath expression in the context of this stylesheet element
ExpressionVisitor	makeExpressionVisitor() Make an expression visitor
StructuredQName	makeQName(java.lang.String lexicalQName, java.lang.String errorCode, java.lang.String attributeName) Make a structured QName, using this Element as the context for namespace resolution.
RetainedStaticContext	makeRetainedStaticContext()
SequenceType	makeSequenceType(java.lang.String sequenceType) Process an attribute whose value is a SequenceType
protected Expression	mapToSequence(Expression mapExpr) Adapt an expression that returns a map to one that returns a representation of the map as a sequence of two-entry maps containing the "key" and "value" fields, as required for the proposed XSLT 4.0 xsl:for-each/iterate instructions with a "map" attribute
protected boolean	markTailCalls() Mark tail-recursive calls on templates and functions.
protected boolean	mayContainFallback() Determine whether this type of element is allowed to contain an xsl:fallback instruction.
protected boolean	mayContainParam() Determine whether this type of element is allowed to contain an xsl:param element
protected boolean	mayContainSequenceConstructor() Determine whether this type of element is allowed to contain a sequence constructor
void	postValidate() Hook to allow additional validation of a parent element immediately after its children have been validated.
protected abstract void	prepareAttributes() Set the attribute list for the element.
void	processAllAttributes() Process the attributes of this element and all its children
protected void	processAttributes() Process the attribute list for the element.
boolean	processBooleanAttribute(java.lang.String name, java.lang.String value) Process an attribute whose value is yes, no, true, false, 1, or 0; returning true or false.
void	processStandardAttributes(java.lang.String namespace) Process the standard attributes such as [xsl:]expand-text.
protected void	processVersionAttribute(java.lang.String ns) Process the [xsl:]version attribute if there is one
void	reportAbsence(java.lang.String attribute) Convenience method to report the absence of a mandatory attribute
protected void	requireXslt40(java.lang.String attributeName) Report an error unless XSLT 4.0 syntax is enabled.
protected boolean	seesAvuncularVariables() Ask whether variables declared in an "uncle" element are visible.
void	setCompilation(Compilation compilation)
protected static void	setInstructionLocation(StyleElement source, Expression child) Set location information on a compiled instruction
void	setObjectName(StructuredQName qName) Set the object name, for example the name of a function, variable, or template declared on this element
void	setValidationError(XmlProcessingIncident reason, StyleElement.OnFailure circumstances) Set a validation error.
void	substituteFor(StyleElement temp) Make this node a substitute for a temporary one previously added to the tree.
Expression	typeCheck(java.lang.String name, Expression exp) Type-check an expression.
Pattern	typeCheck(java.lang.String name, Pattern pattern) Type-check a pattern.
void	validate(ComponentDeclaration decl) Check that the stylesheet element is valid.
protected void	validateChildren(ComponentDeclaration decl, boolean excludeStylesheet) Validate the children of this node, recursively.
void	validateSubtree(ComponentDeclaration decl, boolean excludeStylesheet) Recursive walk through the stylesheet to validate all nodes
protected int	validateValidationAttribute(java.lang.String value) Validate the value of the [xsl:]validation attribute

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

addAttribute, addNamespace, addNamespace, attributes, copy, delete, fixupInsertedNamespaces, generateId, getAllNamespaces, getAttributeValue, getColumnNumber, getDeclaredNamespaces, getLineNumber, getNodeKind, getNodeName, getRoot, getSchemaType, getSystemId, getURIForPrefix, initialise, isId, isIdref, isIdRefNode, isInScopeNamespace, isNilled, iteratePrefixes, removeAttribute, removeNamespace, removeTypeAnnotation, rename, replaceStringValue, setAttributeInfo, setAttributes, setLocation, setNamespaceMap, setNilled, setNodeName, setSystemId, setTypeAnnotation

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

addChild, compact, getFirstChild, getLastChild, getNthChild, getNumberOfChildren, getRawSequenceNumber, getSequenceNumber, getUnicodeStringValue, hasChildNodes, insertChildren, insertChildrenAt, iterateChildren, removeChild, replaceChildrenAt, setChildren, setRawSequenceNumber

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

atomize, compareOrder, effectiveBooleanValue, equals, getDisplayName, getFingerprint, getLocalPart, getNamePool, getNextInDocument, getNextSibling, getParent, getPhysicalRoot, getPrefix, getPreviousInDocument, getPreviousSibling, getRawParent, getSiblingPosition, getSuccessorElement, getTreeInfo, getURI, hasFingerprint, hashCode, head, insertSiblings, isDeleted, iterateAxis, iterateAxis, newBuilder, replace, saveLocation, setRawParent, setSiblingPosition

Methods inherited from class java.lang.Object

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

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

asActiveSource, children, children, deliver, getGenre, getPublicId, isSameNodeInfo, isStreamed, toShortString

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

getLength, getStringValue, itemAt, iterate, reduce, subsequence

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

asIterable, concatenate, containsNode, materialize

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

makeRepeatable

Field Detail

extensionNamespaces

protected java.lang.String[] extensionNamespaces

version

protected int version

staticContext

protected ExpressionContext staticContext

validationError

protected XmlProcessingIncident validationError

reportingCircumstances

protected StyleElement.OnFailure reportingCircumstances

defaultXPathNamespace

protected java.lang.String defaultXPathNamespace

defaultCollationName

protected java.lang.String defaultCollationName

defaultMode

protected StructuredQName defaultMode

expandText

protected boolean expandText

actionsCompleted

protected int actionsCompleted

ACTION_VALIDATE

public static final int ACTION_VALIDATE

See Also:

Constant Field Values

ACTION_COMPILE

public static final int ACTION_COMPILE

See Also:

Constant Field Values

ACTION_TYPECHECK

public static final int ACTION_TYPECHECK

See Also:

Constant Field Values

ACTION_OPTIMIZE

public static final int ACTION_OPTIMIZE

See Also:

Constant Field Values

ACTION_FIXUP

public static final int ACTION_FIXUP

See Also:

Constant Field Values

ACTION_PROCESS_ATTRIBUTES

public static final int ACTION_PROCESS_ATTRIBUTES

See Also:

Constant Field Values

YES_NO

public static final java.lang.String[] YES_NO

Constructor Detail

StyleElement

public StyleElement()

Constructor

Method Detail

getCompilation

public Compilation getCompilation()

setCompilation

public void setCompilation(Compilation compilation)

getPackageData

public StylesheetPackage getPackageData()

getConfiguration

public Configuration getConfiguration()

Description copied from class: NodeImpl

Get the configuration

Specified by:

getConfiguration in interface NodeInfo

Overrides:

getConfiguration in class NodeImpl

Returns:

the Configuration to which the tree belongs. The default implementation invokes getTreeInfo().getConfiguration().

getStaticContext

public ExpressionContext getStaticContext()

Get the static context for expressions on this element

Returns:

the static context

getStaticContext

public ExpressionContext getStaticContext(StructuredQName attributeName)

getBaseURI

public java.lang.String getBaseURI()

Get the base URI of the element, which acts as the static base URI for XPath expressions defined on this element. This is an expensive operation so the result is cached

Specified by:

getBaseURI in interface NodeInfo

Overrides:

getBaseURI in class ElementImpl

Returns:

the base URI

makeExpressionVisitor

public ExpressionVisitor makeExpressionVisitor()

Make an expression visitor

Returns:

the expression visitor

isSchemaAware

public boolean isSchemaAware()

Ask whether the code is compiled in schema-aware mode

Returns:

true if the compilation is schema-aware

substituteFor

public void substituteFor(StyleElement temp)

Make this node a substitute for a temporary one previously added to the tree. See StyleNodeFactory for details. "A node like the other one in all things but its class". Note that at this stage, the node will not yet be known to its parent, though it will contain a reference to its parent; and it will have no children.

Parameters:

temp - the element which this one is substituting for

setValidationError

public void setValidationError(XmlProcessingIncident reason,
                               StyleElement.OnFailure circumstances)

Set a validation error. This is an error detected during construction of this element on the stylesheet, but which is not to be reported until later.

Parameters:

reason - the details of the error

circumstances - a code identifying the circumstances under which the error is to be reported

isInstruction

public boolean isInstruction()

Ask whether this node is an instruction. The default implementation says it isn't.

Returns:

true if this element is an instruction

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). The default implementation returns false

Returns:

true if the element is a permitted child of xsl:stylesheet or xsl:transform

getVisibility

public Visibility getVisibility()

Get the visibility of the component. Returns the actual value of the visibility attribute, after validation, unless this is absent, in which case it returns the default value of PRIVATE. Invokes invalidAttribute(String, String) if the value is invalid.

Returns:

the declared visibility of the component, or Visibility.PRIVATE if the visibility attribute is absent.

getDeclaredVisibility

public Visibility getDeclaredVisibility()

Get the visibility of the component. Returns the actual value of the visibility attribute, after validation, unless this is absent, in which case it returns null.

Returns:

the declared visibility of the component, or null if the visibility attribute is absent.

markTailCalls

protected boolean markTailCalls()

Mark tail-recursive calls on templates and functions. For most instructions, this returns false.

Returns:

true if one or more tail calls were identified

mayContainSequenceConstructor

protected boolean mayContainSequenceConstructor()

Determine whether this type of element is allowed to contain a sequence constructor

Returns:

true if this instruction is allowed to contain a sequence constructor

mayContainFallback

protected boolean mayContainFallback()

Determine whether this type of element is allowed to contain an xsl:fallback instruction. Note that this is only relevant if the element is an instruction.

Returns:

true if this element is allowed to contain an xsl:fallback

mayContainParam

protected boolean mayContainParam()

Determine whether this type of element is allowed to contain an xsl:param element

Returns:

true if this element is allowed to contain an xsl:param

makeQName

public final StructuredQName makeQName(java.lang.String lexicalQName,
                                       java.lang.String errorCode,
                                       java.lang.String attributeName)

Make a structured QName, using this Element as the context for namespace resolution. If the name is unprefixed, the default namespace is not used. If the name is not valid, then a compileError is reported, and the value saxon:error-name is returned.

Parameters:

lexicalQName - The lexical QName as written, in the form "[prefix:]localname". Leading and trailing whitespace will be trimmed. The EQName syntax "Q{uri}local" is also accepted.

errorCode - The error code to be used if the QName is not valid. If this is set to null, then the code used is XTSE0280 for an undeclared prefix, and XTSE0020 for all other errors. The code XTSE0080 is used if the URI is a reserved namespace, regardless of the supplied error code.

attributeName - EQName of the attribute containing the QName, for use in error reporting. May be null.

Returns:

the StructuredQName representation of this lexical QName

getUsedPackage

public StylesheetPackage getUsedPackage()

Assuming this is an xsl:use-package element, find the package to which it refers.

Returns:

the package referenced by this xsl:use-package element; or null if this is not an xsl:use-package element

getXslOriginal

public Actor getXslOriginal(int componentKind)
                     throws XPathException

Check that a reference to xsl:original appears within an xsl:override element, and that the name of the containing component matches the name of a component in the used stylesheet package; return the component in that package with matching symbolic name

Parameters:

componentKind - the kind of component required, e.g. StandardNames.XSL_TEMPLATE

Returns:

the component with matching name in the used stylesheet

Throws:

XPathException - if the xsl:original reference appears in an invalid context

makeRetainedStaticContext

public RetainedStaticContext makeRetainedStaticContext()

getNamespaceResolver

public NamespaceResolver getNamespaceResolver()

Get the namespace context of the instruction.

Returns:

the namespace context. This method does not make a copy of the namespace context, so a reference to the returned NamespaceResolver will lock the stylesheet tree in memory.

processAllAttributes

public void processAllAttributes()
                          throws XPathException

Process the attributes of this element and all its children

Throws:

XPathException - in the event of a static error being detected

processStandardAttributes

public void processStandardAttributes(java.lang.String namespace)

Process the standard attributes such as [xsl:]expand-text. Invokes compileError(String) or similar if the value of any of these attributes is invalid.

The method processes:

• extension-element-prefixes
• exclude-result-prefixes
• version
• default-xpath-namespace
• default-validation
• expand-text

but not:

• default-collation
• default-mode

Parameters:

namespace - either "" to find the attributes in the null namespace, or NamespaceConstant.XSLT to find them in the XSLT namespace

getAttributeValue

public java.lang.String getAttributeValue(java.lang.String clarkName)

Get an attribute value given the Clark name of the attribute (that is, the name in {uri}local format).

Parameters:

clarkName - the name of the attribute in {uri}local format

Returns:

the value of the attribute if it exists, or null otherwise

processAttributes

protected final void processAttributes()

Process the attribute list for the element. This is a wrapper method that calls prepareAttributes (provided in the subclass) and traps any exceptions

checkUnknownAttribute

protected void checkUnknownAttribute(NodeName nc)

Check whether an unknown attribute is permitted.

Parameters:

nc - The name code of the attribute name

prepareAttributes

protected abstract void prepareAttributes()

Set the attribute list for the element. This is called to process the attributes (note the distinction from processAttributes in the superclass). Must be supplied in a subclass

makeExpression

public Expression makeExpression(java.lang.String expression,
                                 AttributeInfo att)

Compile an XPath expression in the context of this stylesheet element

Parameters:

expression - the source text of the XPath expression

att - the attribute containing the XPath expression, or null if the expression is in a text node

Returns:

the compiled expression tree for the XPath expression. In the case of an error, returns an ErrorExpression that will fail at run-time if executed.

makeAttributeValueTemplate

protected Expression makeAttributeValueTemplate(java.lang.String expression,
                                                AttributeInfo att)

Make an attribute value template in the context of this stylesheet element

Parameters:

expression - the source text of the attribute value template

att - the attribute containing the AVT, or null in the case of a text value template

Returns:

a compiled XPath expression that computes the value of the attribute (including concatenating the results of embedded expressions with any surrounding fixed text)

processBooleanAttribute

public boolean processBooleanAttribute(java.lang.String name,
                                       java.lang.String value)

Process an attribute whose value is yes, no, true, false, 1, or 0; returning true or false.

Parameters:

name - the name of the attribute (used for diagnostics)

value - the value of the attribute

Returns:

the value of the attribute as a boolean

isYes

public static boolean isYes(java.lang.String s)

Ask whether an attribute is "yes" or one of its accepted synonyms

Parameters:

s - the value to be tested. Whitespace should be trimmed by the caller

Returns:

true if the value is "yes", "true", or "1"

isNo

public static boolean isNo(java.lang.String s)

Ask whether an attribute is "no" or one of its accepted synonyms

Parameters:

s - the value to be tested. Whitespace should be trimmed by the caller

Returns:

true if the value is "no", "false", or "0"

makeSequenceType

public SequenceType makeSequenceType(java.lang.String sequenceType)
                              throws XPathException

Process an attribute whose value is a SequenceType

Parameters:

sequenceType - the source text of the attribute

Returns:

the processed sequence type

Throws:

XPathException - if the syntax is invalid or for example if it refers to a type that is not in the static context

processVersionAttribute

protected void processVersionAttribute(java.lang.String ns)

Process the [xsl:]version attribute if there is one

Parameters:

ns - the namespace URI of the attribute required, either the XSLT namespace or ""

validateValidationAttribute

protected int validateValidationAttribute(java.lang.String value)

Validate the value of the [xsl:]validation attribute

Parameters:

value - the raw value of the attribute

Returns:

the encoded value of the attribute

isExtensionAttributeAllowed

protected boolean isExtensionAttributeAllowed(java.lang.String attribute)

Ask if an extension attribute is allowed; if no Professional Edition license is available, issue a warning saying the attribute is ignored, and return false

Parameters:

attribute - the name of the attribute

Returns:

true if the extension attribute is allowed, false if not

getDefaultCollationName

protected java.lang.String getDefaultCollationName()

Get the default collation for this stylesheet element. If no default collation is specified in the stylesheet, return the Unicode codepoint collation name.

Returns:

the name of the default collation

isExtensionNamespace

public boolean isExtensionNamespace(java.lang.String uri)

Check whether a namespace uri defines an extension element. This checks whether the namespace is defined as an extension namespace on this or any ancestor node.

Parameters:

uri - the namespace URI being tested

Returns:

true if the URI is an extension element namespace URI

getDefaultXPathNamespace

public java.lang.String getDefaultXPathNamespace()

Get the default XPath namespace for elements and types

Returns:

the default namespace for elements and types. Return NamespaceConstant.NULL for the non-namespace

getSchemaType

public SchemaType getSchemaType(java.lang.String typeAtt)

Get the Schema type definition for a type named in the stylesheet (in a "type" attribute).

Parameters:

typeAtt - the value of the type attribute

Returns:

the corresponding schema type

getTypeAnnotation

public SimpleType getTypeAnnotation(SchemaType schemaType)

Get the type annotation to use for a given schema type

Parameters:

schemaType - the schema type

Returns:

the corresponding numeric type annotation

arrayToSequence

protected Expression arrayToSequence(Expression arrayExpr)

Adapt an expression that returns an array to one that returns a representation of the array as a sequence of single-entry maps, as required for the proposed XSLT 4.0 xsl:for-each/iterate instructions with an "array" attribute

Parameters:

arrayExpr - the expression in the array attribute

Returns:

a call on a function that converts the array to a sequence of single-entry maps

mapToSequence

protected Expression mapToSequence(Expression mapExpr)

Adapt an expression that returns a map to one that returns a representation of the map as a sequence of two-entry maps containing the "key" and "value" fields, as required for the proposed XSLT 4.0 xsl:for-each/iterate instructions with a "map" attribute

Parameters:

mapExpr - the expression in the map attribute

Returns:

a call on a function that converts the map to a sequence of key-value maps

validate

public void validate(ComponentDeclaration decl)
              throws XPathException

Check that the stylesheet element is valid. This is called once for each element, after the entire tree has been built. As well as validation, it can perform first-time initialisation. The default implementation does nothing; it is normally overriden in subclasses.

Parameters:

decl - the declaration to be validated

Throws:

XPathException - if any error is found during validation

postValidate

public void postValidate()
                  throws XPathException

Hook to allow additional validation of a parent element immediately after its children have been validated.

Throws:

XPathException - if any error is found during post-traversal validation

index

public void index(ComponentDeclaration decl,
                  PrincipalStylesheetModule top)
           throws XPathException

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

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 - represents the outermost XSLStylesheet or XSLPackage element

Throws:

XPathException - if any error is encountered

typeCheck

public Expression typeCheck(java.lang.String name,
                            Expression exp)
                     throws XPathException

Type-check an expression. This is called to check each expression while the containing instruction is being validated. It is not just a static type-check, it also adds code to perform any necessary run-time type checking and/or conversion.

Parameters:

name - the name of the attribute containing the expression to be checked (used for diagnostics)

exp - the expression to be checked

Returns:

the (possibly rewritten) expression after type checking

Throws:

XPathException - if type-checking fails statically, that is, if it can be determined that the supplied value for the expression cannot possibly be of the required type

typeCheck

public Pattern typeCheck(java.lang.String name,
                         Pattern pattern)
                  throws XPathException

Type-check a pattern. This is called to check each pattern while the containing instruction is being validated. It is not just a static type-check, it also adds code to perform any necessary run-time type checking and/or conversion.

Parameters:

name - the name of the attribute holding the pattern, for example "match": used in diagnostics

pattern - the compiled pattern

Returns:

the original pattern, or a substitute pattern if it has been rewritten. Returns null if and only if the supplied pattern is null.

Throws:

XPathException - if the pattern fails optimistic static type-checking

fixupReferences

public void fixupReferences()
                     throws XPathException

Fix up references from XPath expressions. Overridden for function declarations and variable declarations

Throws:

XPathException - if any references cannot be fixed up.

getContainingSlotManager

public SlotManager getContainingSlotManager()

Get the SlotManager for the containing Procedure definition

Returns:

the SlotManager associated with the containing Function, Template, etc, or null if there is no such containing Function, Template etc.

validateSubtree

public void validateSubtree(ComponentDeclaration decl,
                            boolean excludeStylesheet)
                     throws XPathException

Recursive walk through the stylesheet to validate all nodes

Parameters:

decl - the declaration to be validated

excludeStylesheet - true if the XSLStylesheet element is to be excluded

Throws:

XPathException - if validation fails

validateChildren

protected void validateChildren(ComponentDeclaration decl,
                                boolean excludeStylesheet)
                         throws XPathException

Validate the children of this node, recursively. Overridden for top-level data elements.

Parameters:

decl - the declaration whose children are to be validated

excludeStylesheet - true if the xsl:stylesheet element is to be excluded

Throws:

XPathException - if validation fails

isPermittedChild

protected boolean isPermittedChild(StyleElement child)

Check whether a given child is permitted for this element. This method is used when a non-instruction child element such as xsl:sort is encountered in a context where instructions would normally be expected.

Parameters:

child - the child that may or may not be permitted

Returns:

true if the child is permitted.

getPrincipalStylesheetModule

public PrincipalStylesheetModule getPrincipalStylesheetModule()

Get the principal stylesheet module of the package in which this XSLT element appears

Returns:

the containing package

getContainingPackage

public StylesheetPackage getContainingPackage()

Get the containing package (the principal stylesheet module of the package in which this XSLT element appears)

Returns:

the containing package. May be null if the method is called during initialization.

checkTopLevel

public void checkTopLevel(java.lang.String errorCode,
                          boolean allowOverride)

Convenience method to check that the stylesheet element is at the top level (that is, as a child of xsl:stylesheet or xsl:transform)

Parameters:

errorCode - the error to throw if it is not at the top level; defaults to XTSE0010 if the value is null

allowOverride - true if the element is allowed to appear as a child of xsl:override

checkEmpty

public void checkEmpty()

Convenience method to check that the stylesheet element is empty

reportAbsence

public void reportAbsence(java.lang.String attribute)

Convenience method to report the absence of a mandatory attribute

Parameters:

attribute - the name of the attribute whose absence is to be reported

compile

public Expression compile(Compilation compilation,
                          ComponentDeclaration decl)
                   throws XPathException

Compile the instruction on the stylesheet tree into an executable instruction for use at run-time.

Parameters:

compilation - the compilation episode

decl - the containing top-level declaration, for example xsl:function or xsl:template

Returns:

either a ComputedExpression, or null. The value null is returned when compiling an instruction that returns a no-op, or when compiling a top-level object such as an xsl:template that compiles into something other than an instruction.

Throws:

XPathException - if validation fails

isWithinDeclaredStreamableConstruct

protected boolean isWithinDeclaredStreamableConstruct()

generateId

protected java.lang.String generateId()

compileDeclaration

public void compileDeclaration(Compilation compilation,
                               ComponentDeclaration decl)
                        throws XPathException

Compile a declaration in the stylesheet tree for use at run-time.

Parameters:

compilation - the compilation episode

decl - the containing top-level declaration, for example xsl:function or xsl:template

Throws:

XPathException - if compilation fails

compileSequenceConstructor

public Expression compileSequenceConstructor(Compilation compilation,
                                             ComponentDeclaration decl,
                                             boolean includeParams)
                                      throws XPathException

Compile the children of this instruction on the stylesheet tree, adding the subordinate instructions to the parent instruction on the execution tree.

Parameters:

compilation - the Executable

decl - the Declaration of the containing top-level stylesheet element

includeParams - true if xsl:param elements are to be treated as child instructions (true for templates but not for functions)

Returns:

the compiled sequence constructor

Throws:

XPathException - if compilation fails

compileSequenceConstructor

public Expression compileSequenceConstructor(Compilation compilation,
                                             ComponentDeclaration decl,
                                             SequenceIterator iter,
                                             boolean includeParams)
                                      throws XPathException

Compile the children of this instruction on the stylesheet tree, adding the subordinate instructions to the parent instruction on the execution tree.

Parameters:

compilation - the Executable

decl - the Declaration of the containing top-level stylesheet element

iter - Iterator over the children. This is used in the case where there are children that are not part of the sequence constructor, for example the xsl:sort children of xsl:for-each; the iterator can be positioned past such elements.

includeParams - true if xsl:param elements are to be treated as child instructions (true for templates but not for functions)

Returns:

the compiled sequence constructor

Throws:

XPathException - if compilation fails

setInstructionLocation

protected static void setInstructionLocation(StyleElement source,
                                             Expression child)

Set location information on a compiled instruction

Parameters:

source - the parent element

child - the compiled expression tree for the instruction to be traced

allocateLocation

protected Location allocateLocation()

Allocate a location

Returns:

an location which can be used to report the location of the instruction

getWithParamInstructions

public WithParam[] getWithParamInstructions(Expression parent,
                                            Compilation compilation,
                                            ComponentDeclaration decl,
                                            boolean tunnel)
                                     throws XPathException

Get the list of xsl:with-param elements for a calling element (apply-templates, call-template, apply-imports, next-match). This method can be used to get either the tunnel parameters, or the non-tunnel parameters.

Parameters:

parent - the compiled form of the parent instruction

compilation - the compilation episode

decl - the containing stylesheet declaration

tunnel - true if the tunnel="yes" parameters are wanted, false to get

Returns:

an array of WithParam objects for either the ordinary parameters or the tunnel parameters, as an array containing the results of compiling the xsl:with-param children of this instruction (if any)

Throws:

XPathException - if any error is detected

compileError

public void compileError(XmlProcessingError error)

Report an error with diagnostic information

Parameters:

error - contains information about the error

compileError

public void compileError(XPathException err)

compileError

public void compileError(java.lang.String message)

Report a static error in the stylesheet

Parameters:

message - the error message

compileError

public void compileError(java.lang.String message,
                         StructuredQName errorCode)

Compile time error, specifying an error code

Parameters:

message - the error message

errorCode - the error code. May be null if not known or not defined

compileError

public void compileError(java.lang.String message,
                         java.lang.String errorCode)

Compile time error, specifying an error code

Parameters:

message - the error message

errorCode - the error code. May be null if not known or not defined

compileError

public void compileError(java.lang.String message,
                         java.lang.String errorCode,
                         Location loc)

compileErrorInAttribute

public void compileErrorInAttribute(java.lang.String message,
                                    java.lang.String errorCode,
                                    java.lang.String attributeName)

Compile time error, specifying an error code and the name of the attribute that is in error.

Parameters:

message - the error message

errorCode - the error code. May be null if not known or not defined

attributeName - the name of the attribute. For attributes in no namespace this is the local part of the name; for namespaced attributes a name in Clark format may be supplied.

invalidAttribute

protected void invalidAttribute(java.lang.String attributeName,
                                java.lang.String allowedValues)

requireXslt40

protected void requireXslt40(java.lang.String attributeName)

Report an error unless XSLT 4.0 syntax is enabled. This currently requires the XSLT version to be set to "4.0" in the XSLT compiler, AND the effective version in the stylesheet to be 4.0 or greater.

Parameters:

attributeName - the name of the attribute if relevant, or null if no specific attribute is concerned

compileWarning

public void compileWarning(java.lang.String message,
                           StructuredQName errorCode)

compileWarning

public void compileWarning(java.lang.String message,
                           java.lang.String errorCode)

compileWarning

public void compileWarning(java.lang.String message,
                           java.lang.String errorCode,
                           Location location)

issueWarning

protected void issueWarning(XPathException error)

Report a warning to the error listener

Parameters:

error - an exception containing the warning text

issueWarning

protected void issueWarning(java.lang.String message,
                            javax.xml.transform.SourceLocator locator)

Report a warning to the error listener

Parameters:

message - the warning message text

locator - the location of the problem in the source stylesheet

isTopLevel

public boolean isTopLevel()

Test whether this is a top-level element

Returns:

true if the element is a child of the xsl:stylesheet or xsl:package element

getBindingInformation

public SourceBinding getBindingInformation(StructuredQName name)

Ask whether this element contains a binding for a variable with a given name; and if it does, return the source binding information

Parameters:

name - the variable name

Returns:

the binding information if this element binds a variable of this name; otherwise null

bindVariable

public SourceBinding bindVariable(StructuredQName qName)

Bind a variable used in this element to the compiled form of the XSLVariable element in which it is declared

Parameters:

qName - The name of the variable

Returns:

the XSLVariableDeclaration (that is, an xsl:variable or xsl:param instruction) for the variable, or null if no declaration of the variable can be found

bindLocalVariable

public SourceBinding bindLocalVariable(StructuredQName qName)

Bind a variable reference used in this element to the compiled form of the XSLVariable element in which it is declared, considering only local variables and params

Parameters:

qName - The name of the variable

Returns:

the XSLVariableDeclaration (that is, an xsl:variable or xsl:param instruction) for the variable, or null if no local declaration of the variable can be found

seesAvuncularVariables

protected boolean seesAvuncularVariables()

Ask whether variables declared in an "uncle" element are visible.

Returns:

true for all elements except xsl:fallback and xsl:catch

hasImplicitBinding

protected SourceBinding hasImplicitBinding(StructuredQName name)

Ask whether this particular element implicitly binds a given variable (used for xsl:accumulator-rule)

Parameters:

name - the name of the variable

Returns:

a SourceBinding object representing the binding of this variable if it exists; otherwise null;

getObjectName

public StructuredQName getObjectName()

Get a name identifying the object of the expression, for example a function name, template name, variable name, key name, element name, etc. This is used only where the name is known statically. If there is no name, the value will be null.

Returns:

the name of the object declared in this element, if any

setObjectName

public void setObjectName(StructuredQName qName)

Set the object name, for example the name of a function, variable, or template declared on this element

Parameters:

qName - the object name as a QName

getProperties

public java.util.Iterator<java.lang.String> getProperties()

Get an iterator over all the properties available. The values returned by the iterator will be of type String, and each string can be supplied as input to the getProperty() method to retrieve the value of the property.

Returns:

an iterator over the available property names