Class: RubyIndexer::Configuration

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/ruby_indexer/lib/ruby_indexer/configuration.rb

Constant Summary collapse

CONFIGURATION_SCHEMA = 
T.let(
  {
    "excluded_gems" => Array,
    "included_gems" => Array,
    "excluded_patterns" => Array,
    "included_patterns" => Array,
    "excluded_magic_comments" => Array,
  }.freeze,
  T::Hash[String, T.untyped],
)

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Configuration

Returns a new instance of Configuration.



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# File 'lib/ruby_indexer/lib/ruby_indexer/configuration.rb', line 20

def initialize
  excluded_gem_names = Bundler.definition.dependencies.filter_map do |dependency|
    dependency.name if dependency.groups == [:development]
  end

  @excluded_gems = T.let(excluded_gem_names, T::Array[String])
  @included_gems = T.let([], T::Array[String])
  @excluded_patterns = T.let(["**/*_test.rb"], T::Array[String])
  path = Bundler.settings["path"]
  @excluded_patterns << "#{File.expand_path(path, Dir.pwd)}/**/*.rb" if path

  @included_patterns = T.let(["#{Dir.pwd}/**/*.rb"], T::Array[String])
  @excluded_magic_comments = T.let(
    [
      "frozen_string_literal:",
      "typed:",
      "compiled:",
      "encoding:",
      "shareable_constant_value:",
      "warn_indent:",
      "rubocop:",
      "nodoc:",
      "doc:",
      "coding:",
      "warn_past_scope:",
    ],
    T::Array[String],
  )
end

Instance Method Details

#files_to_index ⇒ Object 



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# File 'lib/ruby_indexer/lib/ruby_indexer/configuration.rb', line 65

def files_to_index
  excluded_gems = @excluded_gems - @included_gems
  locked_gems = Bundler.locked_gems&.specs

  # NOTE: indexing the patterns (both included and excluded) needs to happen before indexing gems, otherwise we risk
  # having duplicates if BUNDLE_PATH is set to a folder inside the project structure

  # Add user specified patterns
  files_to_index = @included_patterns.flat_map do |pattern|
    Dir.glob(pattern, File::FNM_PATHNAME | File::FNM_EXTGLOB)
  end

  # Remove user specified patterns
  files_to_index.reject! do |path|
    @excluded_patterns.any? do |pattern|
      File.fnmatch?(pattern, path, File::FNM_PATHNAME | File::FNM_EXTGLOB)
    end
  end

  # Add default gems to the list of files to be indexed
  Dir.glob("#{RbConfig::CONFIG["rubylibdir"]}/*").each do |default_path|
    # The default_path might be a Ruby file or a folder with the gem's name. For example:
    #   bundler/
    #   bundler.rb
    #   psych/
    #   psych.rb
    pathname = Pathname.new(default_path)
    short_name = pathname.basename.to_s.delete_suffix(".rb")

    # If the gem name is excluded, then we skip it
    next if excluded_gems.include?(short_name)

    # If the default gem is also a part of the bundle, we skip indexing the default one and index only the one in
    # the bundle, which won't be in `default_path`, but will be in `Bundler.bundle_path` instead
    next if locked_gems&.any? do |locked_spec|
      locked_spec.name == short_name &&
        !Gem::Specification.find_by_name(short_name).full_gem_path.start_with?(RbConfig::CONFIG["rubylibprefix"])
    end

    if pathname.directory?
      # If the default_path is a directory, we index all the Ruby files in it
      files_to_index.concat(Dir.glob("#{default_path}/**/*.rb", File::FNM_PATHNAME | File::FNM_EXTGLOB))
    else
      # If the default_path is a Ruby file, we index it
      files_to_index << default_path
    end
  end

  # Add the locked gems to the list of files to be indexed
  locked_gems&.each do |lazy_spec|
    next if excluded_gems.include?(lazy_spec.name)

    spec = Gem::Specification.find_by_name(lazy_spec.name)

    # When working on a gem, it will be included in the locked_gems list. Since these are the project's own files,
    # we have already included and handled exclude patterns for it and should not re-include or it'll lead to
    # duplicates or accidentally ignoring exclude patterns
    next if spec.full_gem_path == Dir.pwd

    files_to_index.concat(Dir.glob("#{spec.full_gem_path}/{#{spec.require_paths.join(",")}}/**/*.rb"))
  rescue Gem::MissingSpecError
    # If a gem is scoped only to some specific platform, then its dependencies may not be installed either, but they
    # are still listed in locked_gems. We can't index them because they are not installed for the platform, so we
    # just ignore if they're missing
  end

  files_to_index.uniq!
  files_to_index
end

#load_config ⇒ Object 



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# File 'lib/ruby_indexer/lib/ruby_indexer/configuration.rb', line 51

def load_config
  return unless File.exist?(".index.yml")

  config = YAML.parse_file(".index.yml")
  return unless config

  config_hash = config.to_ruby
  validate_config!(config_hash)
  apply_config(config_hash)
rescue Psych::SyntaxError => e
  raise e, "Syntax error while loading .index.yml configuration: #{e.message}"
end

#magic_comment_regex ⇒ Object 



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# File 'lib/ruby_indexer/lib/ruby_indexer/configuration.rb', line 136

def magic_comment_regex
  @magic_comment_regex ||= T.let(/^\s*#\s*#{@excluded_magic_comments.join("|")}/, T.nilable(Regexp))
end