Package net.sf.saxon.expr.instruct

Class InstructionDetails

java.lang.Object

net.sf.saxon.expr.instruct.InstructionDetails

All Implemented Interfaces:

SourceLocator, Location, InstructionInfo, Locator

public final class InstructionDetails
extends Object
implements InstructionInfo

Details about an instruction, used when reporting errors and when tracing

Constructor Summary

Constructors

Constructor	Description
InstructionDetails()
InstructionDetails(Expression expr)

Method Summary

Modifier and Type	Method	Description
int	getColumnNumber()	Get the column number identifying the position of the instruction.
int	getConstructType()	Get the construct type
int	getLineNumber()	Get the line number of the instruction within its module
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.
Iterator<String>	getProperties()	Get an iterator over all the properties available.
Object	getProperty(String name)	Get a named property of the instruction
String	getPublicId()	Get the public ID of the module containing the instruction.
String	getSystemId()	Get the URI of the module containing the instruction
Location	saveLocation()	Get an immutable copy of this Location object.
void	setColumnNumber(int column)	Set the column number
void	setConstructType(int type)	Set the type of construct
void	setLineNumber(int lineNumber)	Set the line number of the instruction within the module
void	setObjectName(StructuredQName qName)	Set a name identifying the object of the expression, for example a function name, template name, variable name, key name, element name, etc.
void	setProperty(String name, Object value)	Set a named property of the instruction
void	setSystemId(String systemId)	Set the URI of the module containing the instruction

Methods inherited from class java.lang.Object

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

Constructor Detail

InstructionDetails

public InstructionDetails()

InstructionDetails

public InstructionDetails(Expression expr)

Method Detail

setConstructType

public void setConstructType(int type)

Set the type of construct

Parameters:

type - the type of contruct

getConstructType

public int getConstructType()

Get the construct type

Specified by:

getConstructType in interface InstructionInfo

Returns:

an integer identifying the kind of construct

setSystemId

public void setSystemId(String systemId)

Set the URI of the module containing the instruction

Parameters:

systemId - the module's URI, or null indicating unknown

getSystemId

public String getSystemId()

Get the URI of the module containing the instruction

Specified by:

getSystemId in interface Location

Specified by:

getSystemId in interface Locator

Specified by:

getSystemId in interface SourceLocator

Returns:

the module's URI, or null indicating unknown

setLineNumber

public void setLineNumber(int lineNumber)

Set the line number of the instruction within the module

Parameters:

lineNumber - the line number

getLineNumber

public int getLineNumber()

Get the line number of the instruction within its module

Specified by:

getLineNumber in interface Location

Specified by:

getLineNumber in interface Locator

Specified by:

getLineNumber in interface SourceLocator

Returns:

the line number

saveLocation

public Location saveLocation()

Get an immutable copy of this Location object. By default Location objects may be mutable, so they should not be saved for later use. The result of this operation holds the same location information, but in an immutable form.

Specified by:

saveLocation in interface Location

setObjectName

public void setObjectName(StructuredQName qName)

Set 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.

Parameters:

qName - the name of the object, for example a function or variable name, or null to indicate that it has no name

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.

Specified by:

getObjectName in interface InstructionInfo

Returns:

the name of the object, or null to indicate that it has no name

setProperty

public void setProperty(String name,
                        Object value)

Set a named property of the instruction

Parameters:

name - the name of the property

value - the value of the property

getProperty

public Object getProperty(String name)

Get a named property of the instruction

Specified by:

getProperty in interface InstructionInfo

Parameters:

name - name of the property

Returns:

the value of the named property

getProperties

public Iterator<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.

Specified by:

getProperties in interface InstructionInfo

Returns:

an iterator over the names of the properties

getPublicId

public String getPublicId()

Get the public ID of the module containing the instruction. This method is provided to satisfy the SourceLocator interface. However, the public ID is not maintained by Saxon, and the method always returns null

Specified by:

getPublicId in interface Location

Specified by:

getPublicId in interface Locator

Specified by:

getPublicId in interface SourceLocator

Returns:

null

setColumnNumber

public void setColumnNumber(int column)

Set the column number

Parameters:

column - the column number of the instruction in the source module

getColumnNumber

public int getColumnNumber()

Get the column number identifying the position of the instruction.

Specified by:

getColumnNumber in interface Location

Specified by:

getColumnNumber in interface Locator

Specified by:

getColumnNumber in interface SourceLocator

Returns:

-1 if column number is not known