Class: Spoom::Cli::Deadcode

Inherits:
Thor
  • Object
show all
Extended by:
T::Sig
Includes:
Helper
Defined in:
lib/spoom/cli/deadcode.rb

Constant Summary

Constants included from Helper

Helper::HIGHLIGHT_COLOR

Instance Method Summary collapse

Methods included from Helper

#blue, #color?, #colorize, #context, #context_requiring_sorbet!, #cyan, #exec_path, #gray, #green, #highlight, #red, #say, #say_error, #say_warning, #yellow

Methods included from Spoom::Colorize

#set_color

Instance Method Details

#deadcode(*paths) ⇒ Object 



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# File 'lib/spoom/cli/deadcode.rb', line 52

def deadcode(*paths)
  context = self.context

  paths << exec_path if paths.empty?

  $stderr.puts "Collecting files..."
  collector = FileCollector.new(
    allow_extensions: options[:allowed_extensions],
    allow_mime_types: options[:allowed_mime_types],
    exclude_patterns: options[:exclude].map { |p| Pathname.new(File.join(exec_path, p, "**")).cleanpath.to_s },
  )
  collector.visit_paths(paths)
  files = collector.files.sort

  if options[:show_files]
    $stderr.puts "\nCollected #{blue(files.size.to_s)} files for analysis\n"
    files.each do |file|
      $stderr.puts "  #{gray(file)}"
    end
    $stderr.puts
  end

  plugins = Spoom::Deadcode.plugins_from_gemfile_lock(context)
  if options[:show_plugins]
    $stderr.puts "\nLoaded #{blue(plugins.size.to_s)} plugins\n"
    plugins.each do |plugin|
      $stderr.puts "  #{gray(plugin.class.to_s)}"
    end
    $stderr.puts
  end

  index = Spoom::Deadcode::Index.new

  $stderr.puts "Indexing #{blue(files.size.to_s)} files..."
  files.each do |file|
    content = File.read(file)
    content = ERB.new(content).src if file.end_with?(".erb")

    tree = Spoom::Deadcode.parse_ruby(content, file: file)
    Spoom::Deadcode.index_node(index, tree, content, file: file, plugins: plugins)
  rescue Spoom::Deadcode::ParserError => e
    say_error("Error parsing #{file}: #{e.message}")
    next
  rescue Spoom::Deadcode::IndexerError => e
    say_error("Error indexing #{file}: #{e.message}")
    next
  end

  if options[:show_defs]
    $stderr.puts "\nDefinitions:"
    index.definitions.each do |name, definitions|
      $stderr.puts "  #{blue(name)}"
      definitions.each do |definition|
        $stderr.puts "    #{yellow(definition.kind.serialize)} #{gray(definition.location.to_s)}"
      end
    end
    $stderr.puts
  end

  if options[:show_refs]
    $stderr.puts "\nReferences:"
    index.references.values.flatten.sort_by(&:name).each do |references|
      name = references.name
      kind = references.kind.serialize
      loc = references.location.to_s
      $stderr.puts "  #{blue(name)} #{yellow(kind)} #{gray(loc)}"
    end
    $stderr.puts
  end

  definitions_count = index.definitions.size.to_s
  references_count = index.references.size.to_s
  $stderr.puts "Analyzing #{blue(definitions_count)} definitions against #{blue(references_count)} references..."

  index.finalize!
  dead = index.definitions.values.flatten.select(&:dead?)

  if options[:sort] == "name"
    dead.sort_by!(&:name)
  else
    dead.sort_by!(&:location)
  end

  if dead.empty?
    $stderr.puts "\n#{green("No dead code found!")}"
  else
    $stderr.puts "\nCandidates:"
    dead.each do |definition|
      $stderr.puts "  #{red(definition.full_name)} #{gray(definition.location.to_s)}"
    end
    $stderr.puts "\n"
    $stderr.puts red("  Found #{dead.size} dead candidates")

    exit(1)
  end
end

#remove(location_string) ⇒ Object 



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# File 'lib/spoom/cli/deadcode.rb', line 150

def remove(location_string)
  location = Spoom::Deadcode::Location.from_string(location_string)
  context = self.context
  remover = Spoom::Deadcode::Remover.new(context)

  new_source = remover.remove_location(nil, location)
  context.write!("PATCH", new_source)

  diff = context.exec("diff -u #{location.file} PATCH")
  $stderr.puts T.must(diff.out.lines[2..-1]).join
  context.remove!("PATCH")

  context.write!(location.file, new_source)
rescue Spoom::Deadcode::Remover::Error => e
  say_error("Can't remove code at #{location_string}: #{e.message}")
  exit(1)
rescue Spoom::Deadcode::Location::LocationError => e
  say_error(e.message)
  exit(1)
end