org.jruby.embed.variable

Class PersistentLocalVariable

java.lang.Object

org.jruby.embed.variable.AbstractVariable

org.jruby.embed.variable.PersistentLocalVariable

All Implemented Interfaces:

BiVariable

public class PersistentLocalVariable
extends AbstractVariable

An implementation of BiVariable for a persistent local variable. This type of a local variable survives over multiple evaluation.

Nested Class Summary

Nested classes/interfaces inherited from interface org.jruby.embed.variable.BiVariable

BiVariable.Type

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.String	VALID_NAME

Fields inherited from class org.jruby.embed.variable.AbstractVariable

fromRuby, irubyObject, javaObject, javaType, name, receiver

Constructor Summary

Constructors

Modifier	Constructor and Description
(package private)	PersistentLocalVariable(RubyObject origin, java.lang.String name, IRubyObject irubyObject) A constructor used when persistent local variables are retrieved from Ruby.
private	PersistentLocalVariable(RubyObject receiver, java.lang.String name, java.lang.Object... javaObjects)

Method Summary

Modifier and Type	Method and Description
static BiVariable	getInstance(RubyObject receiver, java.lang.String name, java.lang.Object... javaObject) Returns an instance of this class.
BiVariable.Type	getType() Returns enum type of this variable defined in BiVariable.
void	inject() Injects a local variable value to a parsed Ruby script.
static boolean	isValidName(java.lang.Object name) Returns true if the given name is a decent Ruby local variable.
void	remove() Attempts to remove this variable from top self or receiver.
static void	retrieve(RubyObject receiver, BiVariableMap vars) Retrieves local variables from Ruby after the evaluation.

Methods inherited from class org.jruby.embed.variable.AbstractVariable

getCurrentContext, getJavaObject, getName, getReceiver, getRubyClass, getRubyObject, getRuntime, getTopSelf, getTopSelf, isReceiverIdentical, isValidName, setJavaObject, setRubyObject, updateByJavaObject, updateRubyObject

Methods inherited from class java.lang.Object

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

Field Detail

VALID_NAME

private static final java.lang.String VALID_NAME

See Also:

Constant Field Values

Constructor Detail

PersistentLocalVariable

private PersistentLocalVariable(RubyObject receiver,
                                java.lang.String name,
                                java.lang.Object... javaObjects)

PersistentLocalVariable

PersistentLocalVariable(RubyObject origin,
                        java.lang.String name,
                        IRubyObject irubyObject)

A constructor used when persistent local variables are retrieved from Ruby.

Parameters:

name - the persistent local variable name

irubyObject - Ruby local object

Method Detail

getInstance

public static BiVariable getInstance(RubyObject receiver,
                                     java.lang.String name,
                                     java.lang.Object... javaObject)

Returns an instance of this class. This factory method is used when a persistent local variable is put in BiVariableMap.

Parameters:

runtime - Ruby runtime

name - a variable name

javaObject - Java object that should be assigned to.

Returns:

the instance of PersistentLocalVariable

getType

public BiVariable.Type getType()

Returns enum type of this variable defined in BiVariable.

Returns:

this enum type, BiVariable.Type.LocalVariable.

isValidName

public static boolean isValidName(java.lang.Object name)

Returns true if the given name is a decent Ruby local variable. Unless returns false.

Parameters:

name - is a name to be checked.

Returns:

true if the given name is of a Ruby local variable.

retrieve

public static void retrieve(RubyObject receiver,
                            BiVariableMap vars)

Retrieves local variables from Ruby after the evaluation. This retrieval doesn't depend on eager option. Local variables are always retrieved eagerly.

Parameters:

runtime - Ruby runtime

receiver - receiver object returned when a script is evaluated.

vars - map to save retrieved local variables.

inject

public void inject()

Injects a local variable value to a parsed Ruby script. This method is invoked during EvalUnit#run() is executed.

remove

public void remove()

Attempts to remove this variable from top self or receiver.