1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
# frozen_string_literal: true
module Pluggaloid
class Collection
attr_reader :values
def initialize(event, *args)
@event = event
args[event.collect_index] = nil
@args = args.freeze
@spec = argument_hash(args)
@values = [].freeze
end
def add(*v)
rewind do |primitive|
primitive + v
end
end
alias_method :<<, :add
def delete(*v)
rewind do |primitive|
primitive - v
end
end
def rewind(&block)
new_values = block.(@values.dup)
added, deleted = new_values - @values, @values - new_values
@values = new_values.freeze
unless added.empty?
args = @args.dup
args[@event.collect_index] = added
@event.collection_add_event.call(*args)
end
unless deleted.empty?
args = @args.dup
args[@event.collect_index] = deleted
@event.collection_delete_event.call(*args)
end
self
end
def argument_hash_same?(specs)
@spec == argument_hash(specs)
end
private
def argument_hash(specs)
@event.argument_hash(specs, @event.collect_index)
end
end
end
|
