com.voytechs.jnetstream.npl
Class SymTable

java.lang.Object
  com.voytechs.jnetstream.npl.SymTable

public class SymTable
extends java.lang.Object

Nested Class Summary

class

SymTable.Symbol Inner class that defines SymTable entries.

Field Summary

protected java.util.Map	children
static java.lang.String	DELIMITER
protected SymTable	parent
static java.lang.String	PARENT_REFERENCE
protected java.util.Map	saveState
static java.lang.String	SELF_REFERENCE

Constructor Summary

SymTable(java.lang.String name)

SymTable(java.lang.String name, SymTable parent)

Method Summary

protected void	addChild(SymTable sym)
void	addSymbol(java.lang.String name, int type, Node definition)
void	addSymbol(java.lang.String name, Node definition)
void	clearContext()
boolean	contains(java.lang.String name)
SymTable	getChild(java.lang.String name)
Context	getContext()
java.lang.String	getName()
protected SymTable.Symbol	getSymbol(java.lang.String name)
java.util.Iterator	getSymbols()
protected SymTable.Symbol	lookup(java.lang.String[] path, int index)
SymTable.Symbol	lookupSymbol(java.lang.String name)
protected SymTable	lookupSymTable(java.lang.String[] path, int index)
SymTable	lookupSymTable(java.lang.String name, boolean dropLastElement)
static void	main(java.lang.String[] args) Test function for SymTable
static java.lang.String	parseLastElement(java.lang.String name)
void	restoreState(java.lang.Object id) Restores state of the sym table and its references to contexts based on the id object passed to it.
void	saveState(java.lang.Object id) Saves the state of the sym table under a unique restore ID that can be later used to identify the restore to be done.
void	setContext(Context context)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

SELF_REFERENCE

public static final java.lang.String SELF_REFERENCE

See Also:

Constant Field Values

PARENT_REFERENCE

public static final java.lang.String PARENT_REFERENCE

See Also:

Constant Field Values

DELIMITER

public static final java.lang.String DELIMITER

See Also:

Constant Field Values

parent

protected SymTable parent

children

protected java.util.Map children

saveState

protected java.util.Map saveState

Constructor Detail

SymTable

public SymTable(java.lang.String name)

SymTable

public SymTable(java.lang.String name,
                SymTable parent)

Method Detail

saveState

public void saveState(java.lang.Object id)

Saves the state of the sym table under a unique restore ID that can be later used to identify the restore to be done.

Parameters:

id - Restore ID under which to save the state of this sym table.

restoreState

public void restoreState(java.lang.Object id)

Restores state of the sym table and its references to contexts based on the id object passed to it. Once restored, the saved state is removed and can not be referenced again unless saved again under same ID.

Parameters:

id - ID of the restore point that was previously done.

addChild

protected void addChild(SymTable sym)

getChild

public SymTable getChild(java.lang.String name)

getName

public java.lang.String getName()

getContext

public Context getContext()

setContext

public void setContext(Context context)

clearContext

public void clearContext()

addSymbol

public void addSymbol(java.lang.String name,
                      Node definition)

addSymbol

public void addSymbol(java.lang.String name,
                      int type,
                      Node definition)

parseLastElement

public static java.lang.String parseLastElement(java.lang.String name)

lookupSymTable

public SymTable lookupSymTable(java.lang.String name,
                               boolean dropLastElement)

lookupSymTable

protected SymTable lookupSymTable(java.lang.String[] path,
                                  int index)

getSymbol

protected SymTable.Symbol getSymbol(java.lang.String name)

lookupSymbol

public SymTable.Symbol lookupSymbol(java.lang.String name)

lookup

protected SymTable.Symbol lookup(java.lang.String[] path,
                                 int index)

contains

public boolean contains(java.lang.String name)

getSymbols

public java.util.Iterator getSymbols()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] args)

Test function for SymTable

Parameters:

args - command line arguments