gnu.mapping

Class Environment

public abstract class Environment extends PropertySet

A mapping from EnvironmentKey to Locations. An EnvironmentKey is either a Symbol or a (Symbol, property)-pair.

Field Summary
static int	INDIRECT_DEFINES Newly defined locations are created in inherited parent environment.

Method Summary
void	addLocation(NamedLocation loc)
abstract NamedLocation	addLocation(Symbol name, Object prop, Location loc)
void	addLocation(EnvironmentKey key, Location loc)
boolean	containsKey(Object key)
static Environment	current()
Namespace	defaultNamespace()
abstract void	define(Symbol key, Object property, Object newValue)
abstract LocationEnumeration	enumerateAllLocations() Does enumerate inherited Locations.
abstract LocationEnumeration	enumerateLocations() Does not enumerate inherited Locations.
Object	get(Symbol key, Object property, Object defaultValue)
Object	get(EnvironmentKey key, Object defaultValue)
Object	get(String key, Object defaultValue)
Object	get(Symbol sym)
Object	get(Object key) Get the value bound to the given name.
boolean	getCanDefine() True if new bindings (non-unbound Locations) can be added.
boolean	getCanRedefine() True if bindings can be removed or replaced by other kinds of Location.
Object	getChecked(String name) Get the value bound to the given name.
static Environment	getCurrent()
int	getFlags()
Object	getFunction(Symbol key, Object defaultValue)
Object	getFunction(Symbol sym)
static Environment	getGlobal()
static Environment	getInstance(String name)
Location	getLocation(Symbol key, Object property) Return a location bound to (key, property).
Location	getLocation(Symbol key) Return a location bound to key (and null property).
abstract NamedLocation	getLocation(Symbol key, Object property, int hash, boolean create)
NamedLocation	getLocation(Symbol name, Object property, boolean create)
Location	getLocation(Object key, boolean create)
Symbol	getSymbol(String name)
protected abstract boolean	hasMoreElements(LocationEnumeration it)
boolean	isBound(Symbol key, Object property)
boolean	isBound(Symbol key)
boolean	isLocked() True if this environment is locked - bindings cannot be added or removed.
Location	lookup(Symbol key, Object property) Return a location bound to (key, property).
abstract NamedLocation	lookup(Symbol name, Object property, int hash)
Location	lookup(Symbol key)
static SimpleEnvironment	make()
static SimpleEnvironment	make(String name)
static InheritingEnvironment	make(String name, Environment parent)
void	put(Symbol key, Object property, Object newValue)
void	put(Symbol key, Object newValue)
Object	put(Object key, Object newValue)
Object	put(String key, Object value)
void	putFunction(Symbol key, Object newValue)
Object	remove(Symbol key, Object property, int hash) Remove Location from this Environment and undefine it.
Object	remove(EnvironmentKey key) Remove and undefine binding.
Object	remove(Symbol symbol, Object property)
void	remove(Symbol sym)
Object	remove(Object key)
void	removeFunction(Symbol sym)
void	setCanDefine(boolean canDefine)
void	setCanRedefine(boolean canRedefine)
static void	setCurrent(Environment env)
void	setFlag(boolean setting, int flag)
static void	setGlobal(Environment env)
void	setIndirectDefines()
void	setLocked()
String	toString()
String	toStringVerbose() Overridden in sub-classes - useful for more verbose debug output.
Location	unlink(Symbol key, Object property, int hash) Remove Location from this Environment.
static Environment	user()