Direct Known Subclasses:

ReadOnlyLocation

public class ConstrainedLocation<T>
extends Location<T>

• Field Summary

  Fields

  Modifier and Type	Field and Description
  protected Location<T>	base
  protected Procedure	converter

  • Fields inherited from class gnu.mapping.Location

    UNBOUND

• Constructor Summary

  Constructors

  Constructor and Description
  ConstrainedLocation ()

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  protected T	coerce (T newValue)
  T	get () Get the current value of this location.
  T	get (T defaultValue)
  java.lang.Object	getKeyProperty ()
  Symbol	getKeySymbol ()
  boolean	isBound ()
  boolean	isConstant ()
  static <T> ConstrainedLocation<T>	make (Location<T> base, Procedure converter)
  void	set (T newValue)
  void	setRestore (java.lang.Object oldValue) Restore an old value.
  java.lang.Object	setWithSave (T newValue) Set a value, but return cookie so old value can be restored.
  void	undefine ()

  • Methods inherited from class gnu.mapping.Location

    define, entered, getBase, getValue, make, make, make, print, setValue, toString

  • Methods inherited from class java.lang.Object

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

• Field Detail

  • base

    protected Location<T> base

  • converter

    protected Procedure converter

• Constructor Detail

  • ConstrainedLocation

    public ConstrainedLocation()

• Method Detail

  • make

    public static <T> ConstrainedLocation<T> make(Location<T> base,
     Procedure converter)

  • getKeySymbol

    public Symbol getKeySymbol()

    Overrides:

    getKeySymbol in class Location<T>

  • getKeyProperty

    public java.lang.Object getKeyProperty()

    Overrides:

    getKeyProperty in class Location<T>

  • isConstant

    public boolean isConstant()

    Overrides:

    isConstant in class Location<T>

  • get

    public final T get()

    Description copied from class: Location
    Get the current value of this location.

    Specified by:

    get in class Location<T>

  • get

    public final T get(T defaultValue)

    Overrides:

    get in class Location<T>

  • isBound

    public boolean isBound()

    Specified by:

    isBound in class Location<T>

  • coerce

    protected T coerce(T newValue)

  • set

    public final void set(T newValue)

    Specified by:

    set in class Location<T>

  • undefine

    public void undefine()

    Overrides:

    undefine in class Location<T>

  • setWithSave

    public java.lang.Object setWithSave(T newValue)

    Description copied from class: Location
    Set a value, but return cookie so old value can be restored. This is intended for fluid-let where (in the case of multiple threads) a simple save-restore isn't always the right thing.

    Overrides:

    setWithSave in class Location<T>

  • setRestore

    public void setRestore(java.lang.Object oldValue)

    Description copied from class: Location
    Restore an old value.

    Overrides:

    setRestore in class Location<T>

    Parameters:

    oldValue - the return value from a prior setWithSave.