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Contents
module Cuboid
module Support::Filter
# @author Tasos "Zapotek" Laskos <tasos.laskos@gmail.com>
# @abstract
class Base
attr_reader :collection
DEFAULT_OPTIONS = {
hasher: :hash
}
# @param [Set] options
# @option options [Symbol] (:hasher)
# Method to call on the item to obtain its hash.
def initialize( options = {} )
@options = DEFAULT_OPTIONS.merge( options )
@hasher = @options[:hasher].to_sym
end
# @param [#persistent_hash] item
# Item to insert.
#
# @return [Base]
# `self`
def <<( item )
@collection << calculate_hash( item )
self
end
# @param [#persistent_hash] item
# Item to check.
#
# @return [Bool]
def include?( item )
@collection.include? calculate_hash( item )
end
def empty?
@collection.empty?
end
def any?
!empty?
end
def size
@collection.size
end
def clear
@collection.clear
end
def merge( other )
case other
when self.class
@collection.merge other.collection
when Array
other.each do |k|
fail 'Cannot merge with unhashed entries' if !k.is_a?( Numeric )
@collection << k
end
else
fail ArgumentError,
"Don't know how to merge with: #{other.class}"
end
self
end
def ==( other )
hash == other.hash
end
def hash
@collection.hash
end
def dup
self.class.new( @options.dup ).merge self
end
def _dump( _ )
Marshal.dump( to_rpc_data )
end
def self._load( data )
from_rpc_data Marshal.load( data )
end
def collection=( c )
@collection = c
end
private
def calculate_hash( item )
item.send @hasher
end
end
end
end
Version data entries
32 entries across 32 versions & 1 rubygems