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Versions: 10
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Contents
require 'jactive_support/java_ext/iterator'
module java::lang::Iterable
if RUBY_VERSION >= '1.9'
FrozenError = RuntimeError
else
FrozenError = TypeError
end
def iterate
return enum_for(:iterate) unless block_given?
it = iterator
while it.next?
ob = it.next
yield(it,ob)
end
end
def delete_if
raise FrozenError, "can't modify frozen iterable" if frozen?
return enum_for(:delete_if) unless block_given?
iterate do |it,ob|
it.remove if yield(ob)
end
self
end
def reject!
raise FrozenError, "can't modify frozen iterable" if frozen?
return enum_for(:reject!) unless block_given?
ret = nil
iterate do |it,ob|
if yield(ob)
it.remove
ret = self
end
end
ret
end
def shift(*args)
raise ArgumentError, "wrong # of arguments(#{args.size} for 1)" if args.size > 1
raise FrozenError, "can't modify frozen iterable" if frozen?
it = iterator
if args.size == 1
n = args.first
raise TypeError, "Can't convert #{n} into Integer" unless n.respond_to?(:to_int)
n = n.to_int
raise TypeError, "#to_int should return Integer" unless n.kind_of?(Integer)
raise ArgumentError, "negative array size" if n < 0
ret = []
while n > 0 && it.next?
ret << it.next
it.remove
n -= 1
end
ret
elsif it.next?
ret = it.next
it.remove
ret
end
end
def empty?
!iterator.next?
end
def clear
raise FrozenError, "can't modify frozen iterable" if frozen?
iterate {|it, o| it.remove}
self
end
end
Version data entries
10 entries across 10 versions & 1 rubygems