Class: RubyLens::ArtModelBuilder

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

Constant Summary collapse

SIGNAL_FIELDS = 
%w[ancestorDepth definitionSites reopenings descendants references members].freeze

Instance Method Summary collapse

Constructor Details

#initialize(seed: 0x51A7_E11A) ⇒ ArtModelBuilder

Returns a new instance of ArtModelBuilder.



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# File 'lib/rubylens/art_model_builder.rb', line 7

def initialize(seed: 0x51A7_E11A)
  @seed = seed
end

Instance Method Details

#build(snapshot) ⇒ Object 



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# File 'lib/rubylens/art_model_builder.rb', line 11

def build(snapshot)
  random = Random.new(@seed)
  namespace_order = (0...snapshot.fetch("namespaces").length).to_a.shuffle(random: random)
  namespaces = namespace_order.map do |index|
    row = snapshot.fetch("namespaces").fetch(index)
    [random.rand(0..0xffff_ffff), *row]
  end
  namespace_names = namespace_order.map { |index| snapshot.fetch("namespace_names").fetch(index) }
  package_order = (0...snapshot.fetch("packages").length).to_a.shuffle(random: random)
  package_index = package_order.each_with_index.to_h
  packages = package_order.map do |old_index|
    package = snapshot.fetch("packages").fetch(old_index)
    declaration_count = package.fetch("declaration_count") { package.fetch("declarations").length }
    [
      random.rand(0..0xffff_ffff),
      package.fetch("role"),
      package.fetch("location"),
      declaration_count,
      *package.fetch("ruby_counts"),
    ]
  end
  package_names = package_order.map { |old_index| snapshot.fetch("packages").fetch(old_index).fetch("name") }
  indexed_dependency_count = snapshot.fetch("packages").sum do |package|
    package.fetch("declaration_count") { package.fetch("declarations").length }
  end
  render_target = [18_000, indexed_dependency_count].min
  dependencies = []
  package_order.each do |old_index|
    package = snapshot.fetch("packages").fetch(old_index)
    declarations = package.fetch("declarations").shuffle(random: random)
    quota = if package.key?("declaration_count")
      declarations.length
    elsif declarations.empty?
      0
    else
      [declarations.length, [1, declarations.length * render_target / [indexed_dependency_count, 1].max].max].min
    end
    declarations.first(quota).each do |declaration|
      dependencies << [
        random.rand(0..0xffff_ffff),
        package_index.fetch(old_index),
        *declaration.drop(1),
      ]
    end
  end
  {
    "schema" => "rubylens.art.v7",
    "projectName" => snapshot.fetch("project_name"),
    "totals" => {
      "namespaces" => namespaces.length,
      "packages" => packages.length,
      "dependencyStars" => indexed_dependency_count,
      "renderedDependencyStars" => dependencies.length,
    },
    "domains" => signal_domains(namespaces, dependencies, snapshot["dependency_signal_maxima"]),
    "componentCounts" => snapshot.fetch("components"),
    "categoryStats" => snapshot.fetch("category_stats"),
    "namespaceNames" => namespace_names,
    "namespaces" => namespaces,
    "packageNames" => package_names,
    "packages" => packages,
    "dependencyStars" => dependencies,
    "warningCounts" => snapshot.fetch("warning_counts"),
  }
end