gnu.expr

Class BuiltinEnvironment

java.lang.Object

gnu.mapping.PropertySet

gnu.mapping.Environment

gnu.expr.BuiltinEnvironment

All Implemented Interfaces:

Named

public class BuiltinEnvironment
extends Environment

An Environment containing the default bindings for the current Language. This is a singleton class. All lookup operations are indirected to the current Language.

Field Summary

Fields inherited from class gnu.mapping.Environment

curEnvironment, INDIRECT_DEFINES

Fields inherited from class gnu.mapping.PropertySet

nameKey

Method Summary

Methods

Modifier and Type	Method and Description
NamedLocation	addLocation(Symbol name, java.lang.Object prop, Location loc)
void	define(Symbol key, java.lang.Object property, java.lang.Object newValue)
LocationEnumeration	enumerateAllLocations() Does enumerate inherited Locations.
LocationEnumeration	enumerateLocations() Does not enumerate inherited Locations.
static BuiltinEnvironment	getInstance()
Environment	getLangEnvironment()
NamedLocation	getLocation(Symbol key, java.lang.Object property, int hash, boolean create)
protected boolean	hasMoreElements(LocationEnumeration it)
NamedLocation	lookup(Symbol name, java.lang.Object property, int hash)

Methods inherited from class gnu.mapping.Environment

addLocation, addLocation, containsKey, current, defaultNamespace, get, get, get, get, get, getCanDefine, getCanRedefine, getChecked, getCurrent, getFlags, getFunction, getFunction, getGlobal, getInstance, getLocation, getLocation, getLocation, getLocation, getSymbol, isBound, isBound, isLocked, lookup, lookup, make, make, make, put, put, put, put, putFunction, remove, remove, remove, remove, remove, removeFunction, restoreCurrent, setCanDefine, setCanRedefine, setCurrent, setFlag, setGlobal, setIndirectDefines, setLocked, setSaveCurrent, toString, toStringVerbose, unlink, user

Methods inherited from class gnu.mapping.PropertySet

getName, getProperty, getSymbol, removeProperty, setName, setProperty, setProperty, setSymbol

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static BuiltinEnvironment getInstance()

getLangEnvironment

public Environment getLangEnvironment()

lookup

public NamedLocation lookup(Symbol name,
                   java.lang.Object property,
                   int hash)

Specified by:

lookup in class Environment

getLocation

public NamedLocation getLocation(Symbol key,
                        java.lang.Object property,
                        int hash,
                        boolean create)

Specified by:

getLocation in class Environment

define

public void define(Symbol key,
          java.lang.Object property,
          java.lang.Object newValue)

Specified by:

define in class Environment

enumerateLocations

public LocationEnumeration enumerateLocations()

Description copied from class: Environment

Does not enumerate inherited Locations.

Specified by:

enumerateLocations in class Environment

enumerateAllLocations

public LocationEnumeration enumerateAllLocations()

Description copied from class: Environment

Does enumerate inherited Locations.

Specified by:

enumerateAllLocations in class Environment

hasMoreElements

protected boolean hasMoreElements(LocationEnumeration it)

Specified by:

hasMoreElements in class Environment

addLocation

public NamedLocation addLocation(Symbol name,
                        java.lang.Object prop,
                        Location loc)

Specified by:

addLocation in class Environment