Class: Spoom::Cli::Srb::Sigs

Inherits:
Thor
  • Object
show all
Includes:
Helper
Defined in:
lib/spoom/cli/srb/sigs.rb

Constant Summary

Constants included from Helper

Helper::HIGHLIGHT_COLOR

Instance Method Summary collapse

Methods included from Helper

#blue, #collect_files, #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

#export(output_path = nil) ⇒ Object 



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# File 'lib/spoom/cli/srb/sigs.rb', line 63

def export(output_path = nil)
  gemspec = options[:gemspec]

  unless gemspec
    say("Locating gemspec file...")
    gemspec = Dir.glob("*.gemspec").first
    unless gemspec
      say_error("No gemspec file found")
      exit(1)
    end
    say("Using `#{gemspec}` as gemspec file")
  end

  spec = Gem::Specification.load(gemspec)

  # First, we copy the files to a temporary directory so we can rewrite them without messing with the
  # original ones.
  say("Copying files to a temporary directory...")
  copy_context = Spoom::Context.mktmp!
  FileUtils.cp_r(
    ["Gemfile", "Gemfile.lock", gemspec, "lib/"],
    copy_context.absolute_path,
  )

  # Then, we transform the copied files to translate all the RBS signatures into RBI signatures.
  say("Translating signatures from RBS to RBI...")
  files = collect_files([copy_context.absolute_path])
  transform_files(files) do |_file, contents|
    Spoom::Sorbet::Sigs.rbs_to_rbi(contents)
  end

  # We need to inject `extend T::Sig` to be sure all the classes can run the `sig{}` blocks.
  # For this we find the entry point of the gem and inject the `extend T::Sig` line at the top of the file.
  entry_point = "lib/#{spec.name}.rb"
  unless copy_context.file?(entry_point)
    say_error("No entry point found at `#{entry_point}`")
    exit(1)
  end

  say("Injecting `extend T::Sig` to `#{entry_point}`...")
  copy_context.write!(entry_point, <<~RB)
    require "sorbet-runtime"

    class Module; include T::Sig; end
    extend T::Sig

    #{copy_context.read(entry_point)}
  RB

  # Now we create a new context to import our modified gem and run tapioca
  say("Running Tapioca...")
  tapioca_context = Spoom::Context.mktmp!
  tapioca_context.write!("Gemfile", <<~RB)
    source "https://rubygems.org"

    gem "tapioca"
    gem "#{spec.name}", path: "#{copy_context.absolute_path}"
  RB
  exec(tapioca_context, "bundle install")
  exec(tapioca_context, "bundle exec tapioca gem #{spec.name} --no-loc --no-file-header")

  rbi_path = tapioca_context.glob("sorbet/rbi/gems/#{spec.name}@*.rbi").first
  unless rbi_path && tapioca_context.file?(rbi_path)
    say_error("No RBI file found at `sorbet/rbi/gems/#{spec.name}@*.rbi`")
    exit(1)
  end

  tapioca_context.write!(rbi_path, tapioca_context.read(rbi_path).gsub(/^# typed: true/, <<~RB.rstrip))
    # typed: true

    # DO NOT EDIT MANUALLY
    # This is an autogenerated file for types exported from the `#{spec.name}` gem.
    # Please instead update this file by running `spoom srb sigs export`.
  RB

  output_path ||= "rbi/#{spec.name}.rbi"
  generated_path = tapioca_context.absolute_path_to(rbi_path)

  if options[:check_sync]
    # If the check option is set, we just compare the generated RBI with the one in the gem.
    # If they are different, we exit with a non-zero exit code.
    unless system("diff -u -L 'generated' -L 'current' #{generated_path} #{output_path} >&2")
      say_error(<<~ERR, status: "\nError")
        The RBI file at `#{output_path}` is not up to date

        Please run `spoom srb sigs export` to update it.
      ERR
      exit(1)
    end

    say("The RBI file at `#{output_path}` is up to date")
    exit(0)
  else
    output_dir = File.dirname(output_path)
    FileUtils.rm_rf(output_dir)
    FileUtils.mkdir_p(output_dir)
    FileUtils.cp(generated_path, output_path)

    say("Exported signatures to `#{output_path}`")
  end
ensure
  copy_context&.destroy!
  tapioca_context&.destroy!
end

#strip(*paths) ⇒ Object 



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# File 'lib/spoom/cli/srb/sigs.rb', line 44

def strip(*paths)
  files = collect_files(paths)

  say("Stripping signatures from `#{files.size}` file#{files.size == 1 ? "" : "s"}...\n\n")

  transformed_files = transform_files(files) do |_file, contents|
    Spoom::Sorbet::Sigs.strip(contents)
  end

  say("Stripped signatures from `#{transformed_files}` file#{transformed_files == 1 ? "" : "s"}.")
end

#translate(*paths) ⇒ Object 



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# File 'lib/spoom/cli/srb/sigs.rb', line 15

def translate(*paths)
  from = options[:from]
  to = options[:to]

  if from == to
    say_error("Can't translate signatures from `#{from}` to `#{to}`")
    exit(1)
  end

  files = collect_files(paths)

  say("Translating signatures from `#{from}` to `#{to}` " \
    "in `#{files.size}` file#{files.size == 1 ? "" : "s"}...\n\n")

  case from
  when "rbi"
    transformed_files = transform_files(files) do |_file, contents|
      Spoom::Sorbet::Sigs.rbi_to_rbs(contents)
    end
  when "rbs"
    transformed_files = transform_files(files) do |_file, contents|
      Spoom::Sorbet::Sigs.rbs_to_rbi(contents)
    end
  end

  say("Translated signatures in `#{transformed_files}` file#{transformed_files == 1 ? "" : "s"}.")
end