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Java Source Code / Java Documentation » Scripting » Kawa » gnu.mapping 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   gnu.mapping.Location

All known Subclasses:   gnu.kawa.reflect.ClassMemberLocation,  gnu.mapping.ThreadLocation,  gnu.mapping.IndirectableLocation,  gnu.mapping.PropertyLocation,  gnu.mapping.ProcLocation,  gnu.mapping.ConstrainedLocation,
Location
abstract public class Location (Code)
A Location is an abstract cell/location/variable with a value.


Field Summary
final public static  StringUNBOUND
     Magic value used to indicate there is no property binding.

Constructor Summary
public  Location()
    

Method Summary
public  booleanentered()
     True if directly entered in an Environment.
abstract public  Objectget(Object defaultValue)
    
final public  Objectget()
     Get the current value of this location.
exception:
  UnboundLocationException - the location does not have a value.
public  LocationgetBase()
    
public  ObjectgetKeyProperty()
    
public  SymbolgetKeySymbol()
    
final public  ObjectgetValue()
    
public  booleanisBound()
    
public  booleanisConstant()
    
public static  Locationmake(Object init, String name)
    
public static  IndirectableLocationmake(String name)
    
public static  IndirectableLocationmake(Symbol name)
    
public  voidprint(java.io.PrintWriter ps)
    
abstract public  voidset(Object value)
    
public  voidsetRestore(Object oldValue, CallContext ctx)
     Restore an old value.
Parameters:
  oldValue - the return value from a prior setWithSave.
final public  ObjectsetValue(Object newValue)
    
public  ObjectsetWithSave(Object newValue, CallContext ctx)
     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.
public  StringtoString()
    
public  voidundefine()
    

Field Detail
UNBOUND
final public static String UNBOUND(Code)
Magic value used to indicate there is no property binding.




Constructor Detail
Location
public Location()(Code)




Method Detail
entered
public boolean entered()(Code)
True if directly entered in an Environment. (Only if NamedLocation.)



get
abstract public Object get(Object defaultValue)(Code)



get
final public Object get()(Code)
Get the current value of this location.
exception:
  UnboundLocationException - the location does not have a value.



getBase
public Location getBase()(Code)



getKeyProperty
public Object getKeyProperty()(Code)



getKeySymbol
public Symbol getKeySymbol()(Code)



getValue
final public Object getValue()(Code)



isBound
public boolean isBound()(Code)



isConstant
public boolean isConstant()(Code)



make
public static Location make(Object init, String name)(Code)



make
public static IndirectableLocation make(String name)(Code)



make
public static IndirectableLocation make(Symbol name)(Code)



print
public void print(java.io.PrintWriter ps)(Code)



set
abstract public void set(Object value)(Code)



setRestore
public void setRestore(Object oldValue, CallContext ctx)(Code)
Restore an old value.
Parameters:
  oldValue - the return value from a prior setWithSave.



setValue
final public Object setValue(Object newValue)(Code)



setWithSave
public Object setWithSave(Object newValue, CallContext ctx)(Code)
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.



toString
public String toString()(Code)



undefine
public void undefine()(Code)



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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