org.jruby

Class RubyEnumerable

java.lang.Object

org.jruby.RubyEnumerable

public class RubyEnumerable
extends Object

The implementation of Ruby's Enumerable module.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RubyEnumerable.AppendBlockCallback
static class	RubyEnumerable.ChunkedBlockCallback

Constructor Summary

Constructors

Constructor and Description
RubyEnumerable()

Method Summary

Methods

Modifier and Type	Method and Description
static IRubyObject	all_p(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	all_p19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	all_pCommon(ThreadContext context, IRubyObject self, Block block, Arity callbackArity)
static IRubyObject	any_p(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	any_p18(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	any_pCommon(ThreadContext context, IRubyObject self, Block block, Arity callbackArity)
static IRubyObject	callEach(Ruby runtime, ThreadContext context, IRubyObject self, Arity arity, BlockCallback callback)
static IRubyObject	callEach(Ruby runtime, ThreadContext context, IRubyObject self, BlockCallback callback)
static IRubyObject	callEach(Ruby runtime, ThreadContext context, IRubyObject self, IRubyObject[] args, Arity arity, BlockCallback callback) Deprecated.
static IRubyObject	callEach(Ruby runtime, ThreadContext context, IRubyObject self, IRubyObject[] args, BlockCallback callback) Deprecated.
static IRubyObject	callEach19(Ruby runtime, ThreadContext context, IRubyObject self, Arity arity, BlockCallback callback)
static IRubyObject	callEach19(Ruby runtime, ThreadContext context, IRubyObject self, BlockCallback callback)
static IRubyObject	chunk(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	chunk(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block) Deprecated.
static IRubyObject	chunk(ThreadContext context, IRubyObject self, IRubyObject initialState, Block block)
static IRubyObject	collect_concat19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	collect(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	collect19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	collectCommon(ThreadContext context, Ruby runtime, IRubyObject self, RubyArray result, Block block, BlockCallback blockCallback)
static IRubyObject	count(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	count(ThreadContext context, IRubyObject self, IRubyObject methodArg, Block block)
static IRubyObject	count18(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	count18(ThreadContext context, IRubyObject self, IRubyObject methodArg, Block block)
static RubyModule	createEnumerableModule(Ruby runtime)
static IRubyObject	cycle(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	cycle(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	detect(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	detect(ThreadContext context, IRubyObject self, IRubyObject ifnone, Block block)
static IRubyObject	detectCommon(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	detectCommon(ThreadContext context, IRubyObject self, IRubyObject ifnone, Block block)
static IRubyObject	drop_while(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	drop(ThreadContext context, IRubyObject self, IRubyObject n, Block block)
static IRubyObject	each_cons(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	each_cons19(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	each_entry(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	each_entryCommon(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	each_slice(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	each_slice19(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	each_with_index(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	each_with_index19(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	each_with_indexCommon(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	each_with_indexCommon19(ThreadContext context, IRubyObject self, Block block, IRubyObject[] args)
static IRubyObject	each_with_object(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	each_with_objectCommon19(ThreadContext context, IRubyObject self, Block block, IRubyObject arg)
static IRubyObject	each(ThreadContext context, IRubyObject self, BlockBody body)
static IRubyObject	enum_cons(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	enum_slice(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	enum_with_index(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	find_all(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	find_index(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	find_index(ThreadContext context, IRubyObject self, Block block, Arity callbackArity)
static IRubyObject	find_index(ThreadContext context, IRubyObject self, IRubyObject cond, Block block)
static IRubyObject	find_index19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	find_index19(ThreadContext context, IRubyObject self, IRubyObject cond, Block block)
static IRubyObject	find_indexCommon(ThreadContext context, IRubyObject self, Block block, Arity callbackArity)
static IRubyObject	find_indexCommon(ThreadContext context, IRubyObject self, IRubyObject cond)
static IRubyObject	find(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	find(ThreadContext context, IRubyObject self, IRubyObject ifnone, Block block)
static IRubyObject	first(ThreadContext context, IRubyObject self)
static IRubyObject	first(ThreadContext context, IRubyObject self, IRubyObject num)
static IRubyObject	flat_map19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	grep(ThreadContext context, IRubyObject self, IRubyObject pattern, Block block)
static IRubyObject	group_by(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	include_p(ThreadContext context, IRubyObject self, IRubyObject arg)
static IRubyObject	inject(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	inject(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	inject(ThreadContext context, IRubyObject self, IRubyObject init, IRubyObject method, Block block)
static IRubyObject	injectCommon(ThreadContext context, IRubyObject self, IRubyObject init, Block block)
static IRubyObject	map19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	max_by(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	max(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	min_by(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	min(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	minmax_by(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	minmax(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	none_p(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	none_p(ThreadContext context, IRubyObject self, Block block, Arity callbackArity)
static IRubyObject	none_p19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	one_p(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	one_p(ThreadContext context, IRubyObject self, Block block, Arity callbackArity)
static IRubyObject	one_p19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	partition(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	partitionCommon(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	reject(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	rejectCommon(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	reverse_each(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	reverse_each(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	select(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	selectCommon(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	sort_by(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	sort_byCommon(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	sort(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	take_while18(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	take_while19(ThreadContext context, IRubyObject self, Block block)
static IRubyObject	take(ThreadContext context, IRubyObject self, IRubyObject n, Block block)
static IRubyObject	takeItems(ThreadContext context, IRubyObject enumerable) Take all items from the given enumerable and insert them into a new array.
static IRubyObject	to_a(ThreadContext context, IRubyObject self)
static IRubyObject	to_a(ThreadContext context, IRubyObject self, IRubyObject[] args)
static IRubyObject	to_a19(ThreadContext context, IRubyObject self)
static IRubyObject	to_a19(ThreadContext context, IRubyObject self, IRubyObject[] args)
static IRubyObject	with_object(ThreadContext context, IRubyObject self, IRubyObject arg, Block block)
static IRubyObject	zip(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	zip19(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	zipCommon(ThreadContext context, IRubyObject self, IRubyObject[] aArgs, Block block)
static IRubyObject	zipCommon19(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	zipCommonAry(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject[]	zipCommonConvert(Ruby runtime, IRubyObject[] args)
static IRubyObject[]	zipCommonConvert(Ruby runtime, IRubyObject[] args, String method)
static IRubyObject	zipCommonEnum(ThreadContext context, IRubyObject self, IRubyObject[] args, Block block)
static IRubyObject	zipEnumNext(ThreadContext context, IRubyObject arg)

Methods inherited from class java.lang.Object

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

Constructor Detail

RubyEnumerable

public RubyEnumerable()

Method Detail

createEnumerableModule

public static RubyModule createEnumerableModule(Ruby runtime)

callEach

public static IRubyObject callEach(Ruby runtime,
                   ThreadContext context,
                   IRubyObject self,
                   BlockCallback callback)

callEach19

public static IRubyObject callEach19(Ruby runtime,
                     ThreadContext context,
                     IRubyObject self,
                     BlockCallback callback)

callEach

@Deprecated
public static IRubyObject callEach(Ruby runtime,
                              ThreadContext context,
                              IRubyObject self,
                              IRubyObject[] args,
                              BlockCallback callback)

Deprecated.

callEach

public static IRubyObject callEach(Ruby runtime,
                   ThreadContext context,
                   IRubyObject self,
                   Arity arity,
                   BlockCallback callback)

callEach19

public static IRubyObject callEach19(Ruby runtime,
                     ThreadContext context,
                     IRubyObject self,
                     Arity arity,
                     BlockCallback callback)

each

public static IRubyObject each(ThreadContext context,
               IRubyObject self,
               BlockBody body)

callEach

@Deprecated
public static IRubyObject callEach(Ruby runtime,
                              ThreadContext context,
                              IRubyObject self,
                              IRubyObject[] args,
                              Arity arity,
                              BlockCallback callback)

Deprecated.

count18

public static IRubyObject count18(ThreadContext context,
                  IRubyObject self,
                  Block block)

count

public static IRubyObject count(ThreadContext context,
                IRubyObject self,
                Block block)

count18

public static IRubyObject count18(ThreadContext context,
                  IRubyObject self,
                  IRubyObject methodArg,
                  Block block)

count

public static IRubyObject count(ThreadContext context,
                IRubyObject self,
                IRubyObject methodArg,
                Block block)

cycle

public static IRubyObject cycle(ThreadContext context,
                IRubyObject self,
                Block block)

cycle

public static IRubyObject cycle(ThreadContext context,
                IRubyObject self,
                IRubyObject arg,
                Block block)

take

public static IRubyObject take(ThreadContext context,
               IRubyObject self,
               IRubyObject n,
               Block block)

take_while18

public static IRubyObject take_while18(ThreadContext context,
                       IRubyObject self,
                       Block block)

take_while19

public static IRubyObject take_while19(ThreadContext context,
                       IRubyObject self,
                       Block block)

drop

public static IRubyObject drop(ThreadContext context,
               IRubyObject self,
               IRubyObject n,
               Block block)

drop_while

public static IRubyObject drop_while(ThreadContext context,
                     IRubyObject self,
                     Block block)

first

public static IRubyObject first(ThreadContext context,
                IRubyObject self)

first

public static IRubyObject first(ThreadContext context,
                IRubyObject self,
                IRubyObject num)

to_a

public static IRubyObject to_a(ThreadContext context,
               IRubyObject self)

to_a

public static IRubyObject to_a(ThreadContext context,
               IRubyObject self,
               IRubyObject[] args)

to_a19

public static IRubyObject to_a19(ThreadContext context,
                 IRubyObject self)

to_a19

public static IRubyObject to_a19(ThreadContext context,
                 IRubyObject self,
                 IRubyObject[] args)

sort

public static IRubyObject sort(ThreadContext context,
               IRubyObject self,
               Block block)

sort_byCommon

public static IRubyObject sort_byCommon(ThreadContext context,
                        IRubyObject self,
                        Block block)

sort_by

public static IRubyObject sort_by(ThreadContext context,
                  IRubyObject self,
                  Block block)

grep

public static IRubyObject grep(ThreadContext context,
               IRubyObject self,
               IRubyObject pattern,
               Block block)

detectCommon

public static IRubyObject detectCommon(ThreadContext context,
                       IRubyObject self,
                       Block block)

detectCommon

public static IRubyObject detectCommon(ThreadContext context,
                       IRubyObject self,
                       IRubyObject ifnone,
                       Block block)

detect

public static IRubyObject detect(ThreadContext context,
                 IRubyObject self,
                 Block block)

detect

public static IRubyObject detect(ThreadContext context,
                 IRubyObject self,
                 IRubyObject ifnone,
                 Block block)

find

public static IRubyObject find(ThreadContext context,
               IRubyObject self,
               Block block)

find

public static IRubyObject find(ThreadContext context,
               IRubyObject self,
               IRubyObject ifnone,
               Block block)

find_index

public static IRubyObject find_index(ThreadContext context,
                     IRubyObject self,
                     Block block)

find_index19

public static IRubyObject find_index19(ThreadContext context,
                       IRubyObject self,
                       Block block)

find_index

public static IRubyObject find_index(ThreadContext context,
                     IRubyObject self,
                     Block block,
                     Arity callbackArity)

find_index19

public static IRubyObject find_index19(ThreadContext context,
                       IRubyObject self,
                       IRubyObject cond,
                       Block block)

find_index

public static IRubyObject find_index(ThreadContext context,
                     IRubyObject self,
                     IRubyObject cond,
                     Block block)

find_indexCommon

public static IRubyObject find_indexCommon(ThreadContext context,
                           IRubyObject self,
                           Block block,
                           Arity callbackArity)

find_indexCommon

public static IRubyObject find_indexCommon(ThreadContext context,
                           IRubyObject self,
                           IRubyObject cond)

selectCommon

public static IRubyObject selectCommon(ThreadContext context,
                       IRubyObject self,
                       Block block)

select

public static IRubyObject select(ThreadContext context,
                 IRubyObject self,
                 Block block)

find_all

public static IRubyObject find_all(ThreadContext context,
                   IRubyObject self,
                   Block block)

rejectCommon

public static IRubyObject rejectCommon(ThreadContext context,
                       IRubyObject self,
                       Block block)

reject

public static IRubyObject reject(ThreadContext context,
                 IRubyObject self,
                 Block block)

collect

public static IRubyObject collect(ThreadContext context,
                  IRubyObject self,
                  Block block)

collect19

public static IRubyObject collect19(ThreadContext context,
                    IRubyObject self,
                    Block block)

map19

public static IRubyObject map19(ThreadContext context,
                IRubyObject self,
                Block block)

collectCommon

public static IRubyObject collectCommon(ThreadContext context,
                        Ruby runtime,
                        IRubyObject self,
                        RubyArray result,
                        Block block,
                        BlockCallback blockCallback)

flat_map19

public static IRubyObject flat_map19(ThreadContext context,
                     IRubyObject self,
                     Block block)

collect_concat19

public static IRubyObject collect_concat19(ThreadContext context,
                           IRubyObject self,
                           Block block)

injectCommon

public static IRubyObject injectCommon(ThreadContext context,
                       IRubyObject self,
                       IRubyObject init,
                       Block block)

inject

public static IRubyObject inject(ThreadContext context,
                 IRubyObject self,
                 Block block)

inject

public static IRubyObject inject(ThreadContext context,
                 IRubyObject self,
                 IRubyObject arg,
                 Block block)

inject

public static IRubyObject inject(ThreadContext context,
                 IRubyObject self,
                 IRubyObject init,
                 IRubyObject method,
                 Block block)

partitionCommon

public static IRubyObject partitionCommon(ThreadContext context,
                          IRubyObject self,
                          Block block)

partition

public static IRubyObject partition(ThreadContext context,
                    IRubyObject self,
                    Block block)

each_with_indexCommon

public static IRubyObject each_with_indexCommon(ThreadContext context,
                                IRubyObject self,
                                Block block)

each_with_indexCommon19

public static IRubyObject each_with_indexCommon19(ThreadContext context,
                                  IRubyObject self,
                                  Block block,
                                  IRubyObject[] args)

each_with_objectCommon19

public static IRubyObject each_with_objectCommon19(ThreadContext context,
                                   IRubyObject self,
                                   Block block,
                                   IRubyObject arg)

each_with_index

public static IRubyObject each_with_index(ThreadContext context,
                          IRubyObject self,
                          Block block)

each_with_index19

public static IRubyObject each_with_index19(ThreadContext context,
                            IRubyObject self,
                            IRubyObject[] args,
                            Block block)

enum_with_index

public static IRubyObject enum_with_index(ThreadContext context,
                          IRubyObject self,
                          Block block)

each_with_object

public static IRubyObject each_with_object(ThreadContext context,
                           IRubyObject self,
                           IRubyObject arg,
                           Block block)

with_object

public static IRubyObject with_object(ThreadContext context,
                      IRubyObject self,
                      IRubyObject arg,
                      Block block)

each_entry

public static IRubyObject each_entry(ThreadContext context,
                     IRubyObject self,
                     IRubyObject[] args,
                     Block block)

each_entryCommon

public static IRubyObject each_entryCommon(ThreadContext context,
                           IRubyObject self,
                           IRubyObject[] args,
                           Block block)

each_slice

public static IRubyObject each_slice(ThreadContext context,
                     IRubyObject self,
                     IRubyObject arg,
                     Block block)

each_slice19

public static IRubyObject each_slice19(ThreadContext context,
                       IRubyObject self,
                       IRubyObject arg,
                       Block block)

enum_slice

public static IRubyObject enum_slice(ThreadContext context,
                     IRubyObject self,
                     IRubyObject arg,
                     Block block)

each_cons

public static IRubyObject each_cons(ThreadContext context,
                    IRubyObject self,
                    IRubyObject arg,
                    Block block)

each_cons19

public static IRubyObject each_cons19(ThreadContext context,
                      IRubyObject self,
                      IRubyObject arg,
                      Block block)

enum_cons

public static IRubyObject enum_cons(ThreadContext context,
                    IRubyObject self,
                    IRubyObject arg,
                    Block block)

reverse_each

public static IRubyObject reverse_each(ThreadContext context,
                       IRubyObject self,
                       Block block)

reverse_each

public static IRubyObject reverse_each(ThreadContext context,
                       IRubyObject self,
                       IRubyObject[] args,
                       Block block)

include_p

public static IRubyObject include_p(ThreadContext context,
                    IRubyObject self,
                    IRubyObject arg)

max

public static IRubyObject max(ThreadContext context,
              IRubyObject self,
              Block block)

max_by

public static IRubyObject max_by(ThreadContext context,
                 IRubyObject self,
                 Block block)

min

public static IRubyObject min(ThreadContext context,
              IRubyObject self,
              Block block)

min_by

public static IRubyObject min_by(ThreadContext context,
                 IRubyObject self,
                 Block block)

minmax

public static IRubyObject minmax(ThreadContext context,
                 IRubyObject self,
                 Block block)

minmax_by

public static IRubyObject minmax_by(ThreadContext context,
                    IRubyObject self,
                    Block block)

none_p

public static IRubyObject none_p(ThreadContext context,
                 IRubyObject self,
                 Block block)

none_p19

public static IRubyObject none_p19(ThreadContext context,
                   IRubyObject self,
                   Block block)

none_p

public static IRubyObject none_p(ThreadContext context,
                 IRubyObject self,
                 Block block,
                 Arity callbackArity)

one_p

public static IRubyObject one_p(ThreadContext context,
                IRubyObject self,
                Block block)

one_p19

public static IRubyObject one_p19(ThreadContext context,
                  IRubyObject self,
                  Block block)

one_p

public static IRubyObject one_p(ThreadContext context,
                IRubyObject self,
                Block block,
                Arity callbackArity)

all_p

public static IRubyObject all_p(ThreadContext context,
                IRubyObject self,
                Block block)

all_p19

public static IRubyObject all_p19(ThreadContext context,
                  IRubyObject self,
                  Block block)

all_pCommon

public static IRubyObject all_pCommon(ThreadContext context,
                      IRubyObject self,
                      Block block,
                      Arity callbackArity)

any_p18

public static IRubyObject any_p18(ThreadContext context,
                  IRubyObject self,
                  Block block)

any_p

public static IRubyObject any_p(ThreadContext context,
                IRubyObject self,
                Block block)

any_pCommon

public static IRubyObject any_pCommon(ThreadContext context,
                      IRubyObject self,
                      Block block,
                      Arity callbackArity)

zip

public static IRubyObject zip(ThreadContext context,
              IRubyObject self,
              IRubyObject[] args,
              Block block)

zip19

public static IRubyObject zip19(ThreadContext context,
                IRubyObject self,
                IRubyObject[] args,
                Block block)

zipCommonConvert

public static IRubyObject[] zipCommonConvert(Ruby runtime,
                             IRubyObject[] args)

zipCommonConvert

public static IRubyObject[] zipCommonConvert(Ruby runtime,
                             IRubyObject[] args,
                             String method)

zipCommon

public static IRubyObject zipCommon(ThreadContext context,
                    IRubyObject self,
                    IRubyObject[] aArgs,
                    Block block)

zipCommon19

public static IRubyObject zipCommon19(ThreadContext context,
                      IRubyObject self,
                      IRubyObject[] args,
                      Block block)

zipCommonAry

public static IRubyObject zipCommonAry(ThreadContext context,
                       IRubyObject self,
                       IRubyObject[] args,
                       Block block)

zipCommonEnum

public static IRubyObject zipCommonEnum(ThreadContext context,
                        IRubyObject self,
                        IRubyObject[] args,
                        Block block)

takeItems

public static IRubyObject takeItems(ThreadContext context,
                    IRubyObject enumerable)

Take all items from the given enumerable and insert them into a new array. See take_items() in array.c.

Parameters:

context - current context

enumerable - object from which to take

Returns:

an array of the object's elements

zipEnumNext

public static IRubyObject zipEnumNext(ThreadContext context,
                      IRubyObject arg)

group_by

public static IRubyObject group_by(ThreadContext context,
                   IRubyObject self,
                   Block block)

chunk

@Deprecated
public static IRubyObject chunk(ThreadContext context,
                           IRubyObject self,
                           IRubyObject[] args,
                           Block block)

Deprecated.

chunk

public static IRubyObject chunk(ThreadContext context,
                IRubyObject self,
                Block block)

chunk

public static IRubyObject chunk(ThreadContext context,
                IRubyObject self,
                IRubyObject initialState,
                Block block)