net.sf.saxon.instruct
Class SlotManager
public
class
SlotManager
extends Object
implements Serializable
A SlotManager supports functions, templates, etc: specifically, any executable code that
requires a stack frame containing local variables. In XSLT a SlotManager underpins any
top-level element that can contain local variable declarations,
specifically, a top-level xsl:template, xsl:variable, xsl:param, or xsl:function element
or an xsl:attribute-set element or xsl:key element. In XQuery it underpins functions and
global variables. The purpose of the SlotManager is to allocate slot numbers to variables
in the stack, and to record how many slots are needed. A Debugger may define a subclass
with additional functionality.
public SlotManager()
The constructor should not be called directly. A new SlotManager should be obtained using
the factory method in the Configuration object.
public int allocateSlotNumber(int fingerprint)
Allocate a slot number for a variable
public int getNumberOfVariables()
Get number of variables (size of stack frame)
public List getVariableMap()
Get the variable map (simply a list of fingerprints of the variable names). Note that it
is possible for several variables to have the same name.
public void setNumberOfVariables(int numberOfVariables)
Set the number of variables
Parameters: numberOfVariables