Package net.sf.saxon.expr.parser

Class ParserExtension

java.lang.Object

net.sf.saxon.expr.parser.ParserExtension

public class ParserExtension
extends Object

Dummy Parser extension for syntax in XPath that is accepted only in particular product variants. Originally, this meant XPath 3.0 syntax associated with higher-order functions. It now covers Saxon syntax extensions and XQuery Update.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ParserExtension.TemporaryXSLTVariableBinding

Constructor Summary

Constructors

Constructor	Description
ParserExtension()

Method Summary

Modifier and Type	Method	Description
void	handleExternalFunctionDeclaration(XQueryParser p, XQueryFunction func)
Expression	lookupStar(Expression lhs, SequenceType type, boolean allow40)	Supporting code for lookup expressions (A?B) where B is the wildcard "*"
void	needExtension(XPathParser p, String what)
Expression	parseDeepUpdateExpression(XQueryParser parser)
protected Expression	parseExtendedExprSingle(XPathParser p)
ItemType	parseExtendedItemType(XPathParser p)	Parse an ItemType within a SequenceType
void	parseItemTypeDeclaration(XQueryParser p)	Parse a type alias declaration.
void	parseRevalidationDeclaration(XQueryParser p)	Parse the "declare revalidation" declaration.
Expression	parseTypePattern(XPathParser p)	Parse an extended XSLT pattern in the form ~itemType (predicate)*
void	parseUpdatingFunctionDeclaration(XQueryParser p)	Parse an updating function declaration (allowed in XQuery Update only)
void	processSchemaImports(QueryModule module, List<XQueryParser.Import> schemaImports)

Methods inherited from class java.lang.Object

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

Constructor Details

ParserExtension

public ParserExtension()

Method Details

lookupStar

public Expression lookupStar(Expression lhs,
 SequenceType type,
 boolean allow40)

Supporting code for lookup expressions (A?B) where B is the wildcard "*"

Parameters:

lhs - the LHS operand of the lookup expression

allow40 -

Returns:

the result of parsing the expression

needExtension

public void needExtension(XPathParser p,
 String what)
                   throws XPathException

Throws:

XPathException

handleExternalFunctionDeclaration

public void handleExternalFunctionDeclaration(XQueryParser p,
 XQueryFunction func)
                                       throws XPathException

Throws:

XPathException

parseExtendedItemType

public ItemType parseExtendedItemType(XPathParser p)
                               throws XPathException

Parse an ItemType within a SequenceType

Parameters:

p - the XPath parser

Returns:

the ItemType after parsing

Throws:

XPathException - if a static error is found

parseTypePattern

public Expression parseTypePattern(XPathParser p)
                            throws XPathException

Parse an extended XSLT pattern in the form ~itemType (predicate)*

Parameters:

p - the XPath parser

Returns:

the equivalent expression in the form .[. instance of type] (predicate)*

Throws:

XPathException - if a static error is found

parseItemTypeDeclaration

public void parseItemTypeDeclaration(XQueryParser p)
                              throws XPathException

Parse a type alias declaration. Allowed only in Saxon-PE and higher

Parameters:

p - the XPath parser

Throws:

XPathException - if parsing fails

parseRevalidationDeclaration

public void parseRevalidationDeclaration(XQueryParser p)
                                  throws XPathException

Parse the "declare revalidation" declaration. Syntax: not allowed unless XQuery update is in use

Parameters:

p - the XPath parser

Throws:

XPathException - if the syntax is incorrect, or is not allowed in this XQuery processor

parseUpdatingFunctionDeclaration

public void parseUpdatingFunctionDeclaration(XQueryParser p)
                                      throws XPathException

Parse an updating function declaration (allowed in XQuery Update only)

Parameters:

p - the XPath parser

Throws:

XPathException - if parsing fails PathMapor if updating functions are not allowed

parseExtendedExprSingle

protected Expression parseExtendedExprSingle(XPathParser p)
                                      throws XPathException

Throws:

XPathException

processSchemaImports

public void processSchemaImports(QueryModule module,
 List<XQueryParser.Import> schemaImports)
                          throws XPathException

Throws:

XPathException

parseDeepUpdateExpression

public Expression parseDeepUpdateExpression(XQueryParser parser)
                                     throws XPathException

Throws:

XPathException