Sha256: 39a54c89f81fc6f50d245dd2f416cabd809d4152a4f2e92aa162e4c41822b6fe
Contents?: true
Size: 760 Bytes
Versions: 29
Compression:
Stored size: 760 Bytes
Contents
require 'arc-furnace/source'
module ArcFurnace
class EnumeratorSource < Source
private_attr_reader :enumerator
attr_reader :value
def initialize
@enumerator = build_enumerator
preprocess
advance
end
# Called after setting up the enumerator but before advancing it
# Use this to extract header rows for instance.
def preprocess
# nothing
end
# Is this source empty?
def empty?
!value
end
def advance
@value =
begin
enumerator.next if enumerator
rescue StopIteration
@enumerator = nil
nil
end
end
protected
# Return the enumerator
def build_enumerator
raise "Unimplemented"
end
end
end
Version data entries
29 entries across 29 versions & 1 rubygems