| java.lang.Object
 gnu.mapping.PropertySet
gnu.mapping.Environment
All known Subclasses: gnu.expr.BuiltinEnvironment, gnu.mapping.SimpleEnvironment,
| Environment | | abstract public class Environment extends PropertySet (Code) | | A mapping from EnvironmentKey to Locations.
An EnvironmentKey is either a Symbol or
a (Symbol, property)-pair.
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| Method Summary | |
| final public void | addLocation(NamedLocation loc)
| | abstract public NamedLocation | addLocation(Symbol name, Object prop, Location loc)
| | final public void | addLocation(EnvironmentKey key, Location loc)
| | final public boolean | containsKey(Object key)
| | public static Environment | current()
| | public Namespace | defaultNamespace()
| | abstract public void | define(Symbol key, Object property, Object newValue)
| | abstract public LocationEnumeration | enumerateAllLocations()
Does enumerate inherited Locations. | | abstract public LocationEnumeration | enumerateLocations()
Does not enumerate inherited Locations. | | public Object | get(Symbol key, Object property, Object defaultValue)
| | final public Object | get(EnvironmentKey key, Object defaultValue)
| | final public Object | get(String key, Object defaultValue)
| | public Object | get(Symbol sym)
| | final public Object | get(Object key)
Get the value bound to the given name. | | public boolean | getCanDefine()
True if new bindings (non-unbound Locations) can be added. | | public boolean | getCanRedefine()
True if bindings can be removed or replaced by other kinds of Location. | | final public Object | getChecked(String name)
Get the value bound to the given name. | | public static Environment | getCurrent()
| | public int | getFlags()
| | final public Object | getFunction(Symbol key, Object defaultValue)
| | final public Object | getFunction(Symbol sym)
| | public static Environment | getGlobal()
| | public static Environment | getInstance(String name)
| | final public Location | getLocation(Symbol key, Object property)
Return a location bound to (key, property).
Create new unbound Location if no such Location exists. | | final public Location | getLocation(Symbol key)
Return a location bound to key (and null property).
Create new unbound Location if no such Location exists. | | abstract public NamedLocation | getLocation(Symbol key, Object property, int hash, boolean create)
| | final public NamedLocation | getLocation(Symbol name, Object property, boolean create)
| | final public Location | getLocation(Object key, boolean create)
| | public Symbol | getSymbol(String name)
| | abstract protected boolean | hasMoreElements(LocationEnumeration it)
| | public boolean | isBound(Symbol key, Object property)
| | final public boolean | isBound(Symbol key)
| | final public boolean | isLocked()
True if this environment is locked - bindings cannot be added or removed. | | final public Location | lookup(Symbol key, Object property)
Return a location bound to (key, property).
Return null if no such Location exists. | | abstract public NamedLocation | lookup(Symbol name, Object property, int hash)
| | final public Location | lookup(Symbol key)
| | public static SimpleEnvironment | make()
| | public static SimpleEnvironment | make(String name)
| | public static InheritingEnvironment | make(String name, Environment parent)
| | public void | put(Symbol key, Object property, Object newValue)
| | final public void | put(Symbol key, Object newValue)
| | final public Object | put(Object key, Object newValue)
| | final public Object | put(String key, Object value)
| | final public void | putFunction(Symbol key, Object newValue)
| | public Object | remove(Symbol key, Object property, int hash)
Remove Location from this Environment and undefine it. | | final public Object | remove(EnvironmentKey key)
Remove and undefine binding. | | final public Object | remove(Symbol symbol, Object property)
| | final public void | remove(Symbol sym)
| | final public Object | remove(Object key)
| | final public void | removeFunction(Symbol sym)
| | public void | setCanDefine(boolean canDefine)
| | public void | setCanRedefine(boolean canRedefine)
| | public static void | setCurrent(Environment env)
| | public void | setFlag(boolean setting, int flag)
| | public static void | setGlobal(Environment env)
| | final public void | setIndirectDefines()
| | public void | setLocked()
| | public String | toString()
| | public String | toStringVerbose()
Overridden in sub-classes - useful for more verbose debug output. | | public Location | unlink(Symbol key, Object property, int hash)
Remove Location from this Environment. | | public static Environment | user()
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| CAN_DEFINE | | final static int CAN_DEFINE(Code) | | |
| CAN_IMPLICITLY_DEFINE | | final static int CAN_IMPLICITLY_DEFINE(Code) | | If 'put' can implicitly define an unbound location.
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| CAN_REDEFINE | | final static int CAN_REDEFINE(Code) | | |
| DIRECT_INHERITED_ON_SET | | final static int DIRECT_INHERITED_ON_SET(Code) | | If this flag is on, set DIRECT_ON_SET for inherited locations.
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| INDIRECT_DEFINES | | final public static int INDIRECT_DEFINES(Code) | | Newly defined locations are created in inherited parent environment.
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| THREAD_SAFE | | final static int THREAD_SAFE(Code) | | May be shared by multiple threads.
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| containsKey | | final public boolean containsKey(Object key)(Code) | | |
| getCanDefine | | public boolean getCanDefine()(Code) | | True if new bindings (non-unbound Locations) can be added.
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| getCanRedefine | | public boolean getCanRedefine()(Code) | | True if bindings can be removed or replaced by other kinds of Location.
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| getFlags | | public int getFlags()(Code) | | |
| getLocation | | final public Location getLocation(Symbol key, Object property)(Code) | | Return a location bound to (key, property).
Create new unbound Location if no such Location exists.
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| getLocation | | final public Location getLocation(Symbol key)(Code) | | Return a location bound to key (and null property).
Create new unbound Location if no such Location exists.
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| isLocked | | final public boolean isLocked()(Code) | | True if this environment is locked - bindings cannot be added or removed.
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| lookup | | final public Location lookup(Symbol key, Object property)(Code) | | Return a location bound to (key, property).
Return null if no such Location exists.
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| remove | | public Object remove(Symbol key, Object property, int hash)(Code) | | Remove Location from this Environment and undefine it.
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| removeFunction | | final public void removeFunction(Symbol sym)(Code) | | |
| setCanDefine | | public void setCanDefine(boolean canDefine)(Code) | | |
| setCanRedefine | | public void setCanRedefine(boolean canRedefine)(Code) | | |
| setFlag | | public void setFlag(boolean setting, int flag)(Code) | | |
| setIndirectDefines | | final public void setIndirectDefines()(Code) | | |
| setLocked | | public void setLocked()(Code) | | |
| toStringVerbose | | public String toStringVerbose()(Code) | | Overridden in sub-classes - useful for more verbose debug output.
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| unlink | | public Location unlink(Symbol key, Object property, int hash)(Code) | | Remove Location from this Environment.
Does not explicitly undefine the location itself.
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