net.sf.saxon.trace

Class ContextStackFrame

public abstract class ContextStackFrame extends Object

An entry on the context stack. A new entry is created every time the context changes. This is a representation of the stack created on request; it does not hold live data.

Nested Class Summary
static class	ContextStackFrame.ApplyTemplates Subclass of ContextStackFrame representing an xsl:apply-templates call in XSLT
static class	ContextStackFrame.BuiltInTemplateRule Subclass of ContextStackFrame representing a built-in template rule in XSLT
static class	ContextStackFrame.CallingApplication Subclass of ContextStackFrame representing the outermost stack frame, for the calling application
static class	ContextStackFrame.CallTemplate Subclass of ContextStackFrame representing an xsl:call-template instruction in XSLT
static class	ContextStackFrame.ForEach Subclass of ContextStackFrame representing an xsl:for-each instruction in XSLT
static class	ContextStackFrame.FunctionCall Subclass of ContextStackFrame representing a call to a user-defined function either in XSLT or XQuery
static class	ContextStackFrame.VariableEvaluation Subclass of ContextStackFrame representing the evaluation of a variable (typically a global variable)

Method Summary
Container	getContainer() Get the container of the instruction that caused this new context to be created.
Item	getContextItem() Get the value of the context item at this level of the context stack
int	getLineNumber() Get the line number of the location of the instruction that caused this new context to be created
String	getSystemId() Get the system ID representing the location of the instruction that caused this new context to be created
abstract void	print(PrintStream out) Display a representation of the stack frame on the specified output stream
void	setContainer(Container container) Set the container of the instruction that caused this new context to be created.
void	setContextItem(Item contextItem) Set the value of the context item at this level of the context stack
void	setLineNumber(int lineNumber) Set the line number of the location of the instruction that caused this new context to be created
void	setSystemId(String uri) Set the system ID representing the location of the instruction that caused this new context to be created
protected String	showLocation() Show the location of a call (for use by subclasses)

Method Detail

getContainer

public Container getContainer()

Get the container of the instruction that caused this new context to be created. This will generally be an object such as an XSLT Template or a user-defined function

Returns: the container of the instruction in the expression tree

getContextItem

public Item getContextItem()

Get the value of the context item at this level of the context stack

Returns: the context item as it was when this new context was created

getLineNumber

public int getLineNumber()

Get the line number of the location of the instruction that caused this new context to be created

Returns: the line number of the instruction within its containing module

getSystemId

public String getSystemId()

Get the system ID representing the location of the instruction that caused this new context to be created

Returns: the system ID (base URI/module URI) of the module containing the instruction

print

public abstract void print(PrintStream out)

Display a representation of the stack frame on the specified output stream

Parameters: out the output stream

setContainer

public void setContainer(Container container)

Set the container of the instruction that caused this new context to be created. This will generally be an object such as an XSLT Template or a user-defined function

Parameters: container the container of the instruction

setContextItem

public void setContextItem(Item contextItem)

Set the value of the context item at this level of the context stack

Parameters: contextItem the context item as it was when this new context was created

setLineNumber

public void setLineNumber(int lineNumber)

Set the line number of the location of the instruction that caused this new context to be created

Parameters: lineNumber the line number of the instruction within its containing module

setSystemId

public void setSystemId(String uri)

Set the system ID representing the location of the instruction that caused this new context to be created

Parameters: uri the system ID (base URI/module URI) of the module containing the instruction

showLocation

protected String showLocation()

Show the location of a call (for use by subclasses)

Returns: typically "(" + systemId() + "#" + lineNumber() + ")"