Class: StudFinder::FanIn

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

Defined Under Namespace

Classes: ReferenceCandidate, Result

Constant Summary collapse

PATH_ROOTS = 
%w[app lib test].freeze
CLASS_OR_MODULE_TYPES = 
%i[class module].freeze

Instance Method Summary collapse

Constructor Details

#initialize(repo_path:, files:, stderr: $stderr) ⇒ FanIn

Returns a new instance of FanIn.



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# File 'lib/stud_finder/fan_in.rb', line 14

def initialize(repo_path:, files:, stderr: $stderr)
  @repo_path = File.expand_path(repo_path)
  @files = files
  @stderr = stderr
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/stud_finder/fan_in.rb', line 20

def call
  constants = constant_ownership
  references = resolved_reference_sets(@files, constants)
  reverse_constants = constants.invert

  counts = @files.to_h { |file| [file, 0] }
  fan_out_counts = @files.to_h { |file| [file, 0] }
  dependents = @files.to_h { |file| [file, []] }
  dependencies = @files.to_h { |file| [file, []] }

  @files.each do |file|
    constant = constants[file]
    counts[file] = constant ? fan_in_count(file, constant, references) : 0

    references[file]&.each do |ref_constant|
      dep_file = reverse_constants[ref_constant]
      next unless dep_file && dep_file != file

      fan_out_counts[file] += 1
      dependencies[file] << dep_file
      dependents[dep_file] << file
    end
  end

  edges = @files.to_h do |file|
    [file, { dependents: dependents[file].uniq, dependencies: dependencies[file].uniq }]
  end

  Result.new(counts: counts, fan_out_counts: fan_out_counts, edges: edges)
end