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# frozen_string_literal: true
module TestProf
module Utils
# Ordered set with capacity
class SizedOrderedSet
unless [].respond_to?(:bsearch_index)
require "test_prof/ext/array_bsearch_index"
using ArrayBSearchIndex
end
include Enumerable
def initialize(max_size, sort_by: nil, &block)
@max_size = max_size
@comparator =
if block_given?
block
elsif !sort_by.nil?
->(x, y) { x[sort_by] >= y[sort_by] }
else
->(x, y) { x >= y }
end
@data = []
end
def <<(item)
return if data.size == max_size &&
comparator.call(data.last, item)
# Find an index of a smaller element
index = data.bsearch_index { |x| !comparator.call(x, item) }
if index.nil?
data << item
else
data.insert(index, item)
end
data.pop if data.size > max_size
data.size
end
def each(&block)
if block_given?
data.each(&block)
else
data.each
end
end
def size
data.size
end
def to_a
data.dup
end
private
attr_reader :max_size, :data, :comparator
end
end
end
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