Contents

# frozen_string_literal: true

require 'delorean/ruby/whitelists/matchers/arguments'

module Delorean
  module Ruby
    module Whitelists
      module Matchers
        class Method
          attr_reader :method_name,
                      :match_to,
                      :arguments_matchers,
                      :arguments_matchers_hash

          def initialize(method_name:, match_to: nil)
            @method_name = method_name
            @match_to = match_to
            @arguments_matchers = []
            @arguments_matchers_hash = {}

            yield self if block_given?
          end

          def called_on(klass, with: [])
            matcher = Ruby::Whitelists::Matchers::Arguments.new(
              called_on: klass, method_name: method_name, with: with
            )

            arguments_matchers_hash[klass] = matcher

            arguments_matchers << matcher

            # Sort matchers by reversed ancestors chain length, so
            # matcher method would find the closest ancestor in hierarchy
            arguments_matchers.sort_by! do |obj|
              -obj.called_on.ancestors.size
            end
          end

          def matcher(klass:)
            # Optimization hack: Look for exact class matcher in hash.
            # If it's not found, search for ancestor classes matchers in array
            matcher = @arguments_matchers_hash[klass]
            return matcher unless matcher.nil?

            matcher = @arguments_matchers.find do |matcher_object|
              klass <= matcher_object.called_on
            end

            raise "no such method #{method_name} for #{klass}" if matcher.nil?

            matcher
          end

          def match!(klass:, args:)
            matcher(klass: klass).match!(args: args)
          end

          def match_to?
            !match_to.nil?
          end

          def extend_matcher
            yield self if block_given?
          end
        end
      end
    end
  end
end

Version data entries

9 entries across 9 versions & 1 rubygems

Version	Path
delorean_lang-2.5.0	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-2.4.2	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-2.4.0	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-2.3.0	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-2.1.0	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-2.0.0	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-1.1.0	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-1.0.0	lib/delorean/ruby/whitelists/matchers/method.rb
delorean_lang-0.6.3	lib/delorean/ruby/whitelists/matchers/method.rb