Class: FilterMatcher::Matcher::SingleMatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/filter_matcher/filter_matcher.rb

Overview

matches only when filters can narrow collection to one element

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SingleMatcher

Returns a new instance of SingleMatcher.



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# File 'lib/filter_matcher/filter_matcher.rb', line 43

def initialize
  @filters = []
end

Instance Attribute Details

#filters ⇒ Object

Returns the value of attribute filters.



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# File 'lib/filter_matcher/filter_matcher.rb', line 41

def filters
  @filters
end

Instance Method Details

#run(collection, match) ⇒ Object 



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# File 'lib/filter_matcher/filter_matcher.rb', line 47

def run(collection, match)
  @filters.each do |filter|
    filtered = filter.call(collection)
    collection = filtered.empty? ? collection : filtered

    if collection.size == 1
      match.call(collection.first)
      break
    end
  end
end