org.jruby
Class RubyNil

java.lang.Object
  org.jruby.RubyObject
      org.jruby.RubyNil

All Implemented Interfaces:

java.lang.Cloneable, IRubyObject

public class RubyNil
extends RubyObject

Author:

jpetersen

Nested Class Summary

Nested classes/interfaces inherited from class org.jruby.RubyObject

RubyObject.Finalizer

Field Summary

static ObjectAllocator

NIL_ALLOCATOR

Fields inherited from class org.jruby.RubyObject

instanceVariables, isTrue, metaClass, NEVER, OBJECT_ALLOCATOR

Fields inherited from interface org.jruby.runtime.builtin.IRubyObject

NULL_ARRAY

Constructor Summary

RubyNil(Ruby runtime)

Method Summary

static RubyClass	createNilClass(Ruby runtime)
IRubyObject	freeze() Freeze an object.
int	getNativeTypeIndex() This is overridden in the other concrete Java builtins to provide a fast way to determine what type they are.
Ruby	getRuntime() Getter for property ruby.
RubyFixnum	id() Return the internal id of an object.
static RubyFixnum	id(IRubyObject recv)
static RubyString	inspect(IRubyObject recv) nil_inspect
boolean	isImmediate()
boolean	isNil() RubyMethod isNil.
IRubyObject	nil_p()
static RubyBoolean	op_and(IRubyObject recv, IRubyObject obj) nil_and
static RubyBoolean	op_or(IRubyObject recv, IRubyObject obj) nil_or
static RubyBoolean	op_xor(IRubyObject recv, IRubyObject obj) nil_xor
boolean	safeHasInstanceVariables() Returns true if the object has any instance variables, false otherwise.
IRubyObject	taint() rb_obj_taint
static RubyArray	to_a(IRubyObject recv) nil_to_a
static RubyFloat	to_f(IRubyObject recv) nil_to_f
static RubyFixnum	to_i(IRubyObject recv) nil_to_i
static RubyString	to_s(IRubyObject recv) nil_to_s
static RubyClass	type(IRubyObject recv) nil_type

Methods inherited from class org.jruby.RubyObject

addFinalizer, anyToString, asString, asSymbol, attachToObjectSpace, callInit, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethodMissing, callMethodMissing, callSuper, checkArrayType, checkFrozen, checkStringType, compilerCallMethod, compilerCallMethodWithIndex, convertToArray, convertToFloat, convertToHash, convertToInteger, convertToString, convertToType, convertToType, convertToType, convertToTypeWithCheck, createObjectClass, dataGetStruct, dataWrapStruct, display, doClone, dup, eql, eqlInternal, equal, equalInternal, equals, evalSimple, evalUnder, evalWithBinding, extend, frozen, getInstanceVariable, getInstanceVariables, getInstanceVariablesSnapshot, getJavaClass, getMetaClass, getSingletonClass, getSingletonClassClone, getType, hash, hashCode, id_deprecated, infectBy, inherited, initCopy, initialize_copy, initialize, inspect, instance_eval, instance_exec, instance_of, instance_variable_get, instance_variable_set, instance_variables, instanceVariableNames, isFalse, isFrozen, isKindOf, isSingleton, isTaint, isTrue, kind_of, makeMetaClass, match, method, methods, obj_equal, private_methods, protected_methods, public_methods, puts, rbClone, remove_instance_variable, removeFinalizers, removeInstanceVariable, respond_to, respondsTo, safeGetInstanceVariables, send, setFrozen, setInstanceVariable, setInstanceVariable, setInstanceVariables, setMetaClass, setTaint, singleton_methods, specificEval, tainted, testFrozen, to_s, toString, trueFalseNil, trueFalseNil, type_deprecated, type, untaint

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NIL_ALLOCATOR

public static ObjectAllocator NIL_ALLOCATOR

Constructor Detail

RubyNil

public RubyNil(Ruby runtime)

Method Detail

getRuntime

public Ruby getRuntime()

Description copied from class: RubyObject

Getter for property ruby.

Specified by:

getRuntime in interface IRubyObject

Overrides:

getRuntime in class RubyObject

Returns:

Value of property ruby.

createNilClass

public static RubyClass createNilClass(Ruby runtime)

getNativeTypeIndex

public int getNativeTypeIndex()

Description copied from class: RubyObject

This is overridden in the other concrete Java builtins to provide a fast way to determine what type they are.

Specified by:

getNativeTypeIndex in interface IRubyObject

Overrides:

getNativeTypeIndex in class RubyObject

Returns:

the ClassIndex of the native type this object was constructed from

isImmediate

public boolean isImmediate()

Specified by:

isImmediate in interface IRubyObject

Overrides:

isImmediate in class RubyObject

Returns:

safeHasInstanceVariables

public boolean safeHasInstanceVariables()

Description copied from interface: IRubyObject

Returns true if the object has any instance variables, false otherwise. "safe" in that it doesn't cause the instance var map to be created.

Specified by:

safeHasInstanceVariables in interface IRubyObject

Overrides:

safeHasInstanceVariables in class RubyObject

Returns:

true if the object has instance variables, false otherwise.

to_i

public static RubyFixnum to_i(IRubyObject recv)

nil_to_i

to_f

public static RubyFloat to_f(IRubyObject recv)

nil_to_f

to_s

public static RubyString to_s(IRubyObject recv)

nil_to_s

to_a

public static RubyArray to_a(IRubyObject recv)

nil_to_a

inspect

public static RubyString inspect(IRubyObject recv)

nil_inspect

type

public static RubyClass type(IRubyObject recv)

nil_type

op_and

public static RubyBoolean op_and(IRubyObject recv,
                                 IRubyObject obj)

nil_and

op_or

public static RubyBoolean op_or(IRubyObject recv,
                                IRubyObject obj)

nil_or

op_xor

public static RubyBoolean op_xor(IRubyObject recv,
                                 IRubyObject obj)

nil_xor

id

public static RubyFixnum id(IRubyObject recv)

isNil

public boolean isNil()

Description copied from interface: IRubyObject

RubyMethod isNil.

Specified by:

isNil in interface IRubyObject

Overrides:

isNil in class RubyObject

Returns:

boolean

freeze

public IRubyObject freeze()

Description copied from class: RubyObject

Freeze an object. rb_obj_freeze

Overrides:

freeze in class RubyObject

nil_p

public IRubyObject nil_p()

Overrides:

nil_p in class RubyObject

taint

public IRubyObject taint()

Description copied from class: RubyObject

rb_obj_taint

Overrides:

taint in class RubyObject

id

public RubyFixnum id()

Description copied from class: RubyObject

Return the internal id of an object. CRuby function: rb_obj_id

Specified by:

id in interface IRubyObject

Overrides:

id in class RubyObject

Returns: