Contents

# typed: true
# frozen_string_literal: true

require "set"

module Tapioca
  module Trackers
    # Registers a TracePoint immediately upon load to track points at which
    # classes and modules are opened for definition. This is used to track
    # correspondence between classes/modules and files, as this information isn't
    # available in the ruby runtime without extra accounting.
    module ConstantDefinition
      extend Reflection

      @class_files = {}

      # Immediately activated upon load. Observes class/module definition.
      TracePoint.trace(:class) do |tp|
        unless tp.self.singleton_class?
          key = name_of(tp.self)
          file = tp.path
          if file == "(eval)"
            file = T.must(caller_locations)
              .drop_while { |loc| loc.path == "(eval)" }
              .first&.path
          end
          @class_files[key] ||= Set.new
          @class_files[key] << file
        end
      end

      # Returns the files in which this class or module was opened. Doesn't know
      # about situations where the class was opened prior to +require+ing,
      # or where metaprogramming was used via +eval+, etc.
      def self.files_for(klass)
        name = String === klass ? klass : name_of(klass)
        files = @class_files[name]
        files || Set.new
      end
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
tapioca-0.6.4	lib/tapioca/trackers/constant_definition.rb
tapioca-0.6.3	lib/tapioca/trackers/constant_definition.rb
tapioca-0.6.2	lib/tapioca/trackers/constant_definition.rb
tapioca-0.6.1	lib/tapioca/trackers/constant_definition.rb
tapioca-0.6.0	lib/tapioca/trackers/constant_definition.rb