Class: RBS::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/rbs/cli.rb

Defined Under Namespace

Classes: LibraryOptions

Constant Summary collapse

COMMANDS = 
[:ast, :annotate, :list, :ancestors, :methods, :method, :validate, :constant, :paths, :prototype, :vendor, :parse, :test, :collection, :subtract]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(stdout:, stderr:) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/rbs/cli.rb', line 88

def initialize(stdout:, stderr:)
  @stdout = stdout
  @stderr = stderr
end

Instance Attribute Details

#original_args ⇒ Object (readonly)

Returns the value of attribute original_args.



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# File 'lib/rbs/cli.rb', line 86

def original_args
  @original_args
end

#stderr ⇒ Object (readonly)

Returns the value of attribute stderr.



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# File 'lib/rbs/cli.rb', line 85

def stderr
  @stderr
end

#stdout ⇒ Object (readonly)

Returns the value of attribute stdout.



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# File 'lib/rbs/cli.rb', line 84

def stdout
  @stdout
end

Instance Method Details

#collection_options(args) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 1153

def collection_options(args)
  OptionParser.new do |opts|
    opts.banner = <<~HELP
      Usage: rbs collection [install|update|init|clean|help]

      Manage RBS collection, which contains third party RBS.

      Examples:

        # Initialize the configuration file
        $ rbs collection init

        # Generate the lock file and install RBSs from the lock file
        $ rbs collection install

        # Update the RBSs
        $ rbs collection update

      Options:
    HELP
    opts.on('--frozen') if args[0] == 'install'
  end
end

#has_parser? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbs/cli.rb', line 108

def has_parser?
  defined?(RubyVM::AbstractSyntaxTree)
end

#parse_logging_options(opts) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 95

def parse_logging_options(opts)
  opts.on("--log-level LEVEL", "Specify log level (defaults to `warn`)") do |level|
    RBS.logger_level = level
  end

  opts.on("--log-output OUTPUT", "Specify the file to output log (defaults to stderr)") do |output|
    io = File.open(output, "a") or raise
    RBS.logger_output = io
  end

  opts
end

#run(args) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 112

def run(args)
  @original_args = args.dup

  options = LibraryOptions.new

  opts = OptionParser.new
  opts.banner = <<~USAGE
    Usage: rbs [options...] [command...]

    Available commands: #{COMMANDS.join(", ")}, version, help.

    Options:
  USAGE
  options.setup_library_options(opts)
  parse_logging_options(opts)
  opts.version = RBS::VERSION

  opts.order!(args)

  command = args.shift&.to_sym

  case command
  when :version
    stdout.puts opts.ver
  when *COMMANDS
    __send__ :"run_#{command}", args, options
  else
    stdout.puts opts.help
  end
end

#run_ancestors(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 257

def run_ancestors(args, options)
  # @type var kind: :instance | :singleton
  kind = :instance

  OptionParser.new do |opts|
    opts.banner = <<EOU
Usage: rbs ancestors [options...] [type_name]

Show ancestors of the given class or module.

Examples:

  $ rbs ancestors --instance String
  $ rbs ancestors --singleton Array

Options:
EOU
    opts.on("--instance", "Ancestors of instance of the given type_name (default)") { kind = :instance }
    opts.on("--singleton", "Ancestors of singleton of the given type_name") { kind = :singleton }
  end.order!(args)

  unless args.size == 1
    stdout.puts "Expected one argument."
    return
  end

  loader = options.loader()

  env = Environment.from_loader(loader).resolve_type_names

  builder = DefinitionBuilder::AncestorBuilder.new(env: env)
  type_name = TypeName(args[0]).absolute!

  case env.constant_entry(type_name)
  when Environment::ClassEntry, Environment::ModuleEntry, Environment::ClassAliasEntry, Environment::ModuleAliasEntry
    type_name = env.normalize_module_name(type_name)

    ancestors = case kind
                when :instance
                  builder.instance_ancestors(type_name)
                when :singleton
                  builder.singleton_ancestors(type_name)
                else
                  raise
                end

    ancestors.ancestors.each do |ancestor|
      case ancestor
      when Definition::Ancestor::Singleton
        stdout.puts "singleton(#{ancestor.name})"
      when Definition::Ancestor::Instance
        if ancestor.args.empty?
          stdout.puts ancestor.name.to_s
        else
          stdout.puts "#{ancestor.name}[#{ancestor.args.join(", ")}]"
        end
      end
    end
  else
    stdout.puts "Cannot find class: #{type_name}"
  end
end

#run_annotate(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 971

def run_annotate(args, options)
  require "rbs/annotate"

  source = RBS::Annotate::RDocSource.new()
  annotator = RBS::Annotate::RDocAnnotator.new(source: source)

  preserve = true

  OptionParser.new do |opts|
    opts.banner = <<-EOB
Usage: rbs annotate [options...] [files...]

Import documents from RDoc and update RBS files.

Examples:

  $ rbs annotate stdlib/pathname/**/*.rbs

Options:
    EOB

    opts.on("--[no-]system", "Load RDoc from system (defaults to true)") {|b| source.with_system_dir = b }
    opts.on("--[no-]gems", "Load RDoc from gems (defaults to false)") {|b| source.with_gems_dir = b }
    opts.on("--[no-]site", "Load RDoc from site directory (defaults to false)") {|b| source.with_site_dir = b }
    opts.on("--[no-]home", "Load RDoc from home directory (defaults to false)") {|b| source.with_home_dir = b }
    opts.on("-d", "--dir DIRNAME", "Load RDoc from DIRNAME") {|d| source.extra_dirs << Pathname(d) }
    opts.on("--[no-]arglists", "Generate arglists section (defaults to true)") {|b| annotator.include_arg_lists = b }
    opts.on("--[no-]filename", "Include source file name in the documentation (defaults to true)") {|b| annotator.include_filename = b }
    opts.on("--[no-]preserve", "Try preserve the format of the original file (defaults to true)") {|b| preserve = b }
  end.parse!(args)

  source.load()

  args.each do |file|
    path = Pathname(file)
    if path.directory?
      Pathname.glob((path + "**/*.rbs").to_s).each do |path|
        stdout.puts "Processing #{path}..."
        annotator.annotate_file(path, preserve: preserve)
      end
    else
      stdout.puts "Processing #{path}..."
      annotator.annotate_file(path, preserve: preserve)
    end
  end
end

#run_ast(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 143

def run_ast(args, options)
  OptionParser.new do |opts|
    opts.banner = <<EOB
Usage: rbs ast [patterns...]

Print JSON AST of loaded environment.
You can specify patterns to filter declarations with the file names.

Examples:

  $ rbs ast
  $ rbs ast 'basic_object.rbs'
  $ rbs -I ./sig ast ./sig
  $ rbs -I ./sig ast '*/models/*.rbs'
EOB
  end.order!(args)

  patterns = args.map do |arg|
    path = Pathname(arg)
    if path.exist?
      # Pathname means a directory or a file
      path
    else
      # String means a `fnmatch` pattern
      arg
    end
  end

  loader = options.loader()

  env = Environment.from_loader(loader).resolve_type_names

  decls = env.declarations.select do |decl|
    loc = decl.location or raise
    # @type var name: String
    name = loc.buffer.name

    patterns.empty? || patterns.any? do |pat|
      case pat
      when Pathname
        Pathname(name).ascend.any? {|p| p == pat }
      when String
        name.end_with?(pat) || File.fnmatch(pat, name, File::FNM_EXTGLOB)
      end
    end
  end

  stdout.print JSON.generate(decls)
  stdout.flush
end

#run_collection(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 1092

def run_collection(args, options)
  opts = collection_options(args)
  params = {}
  opts.order args.drop(1), into: params
  config_path = options.config_path or raise
  lock_path = Collection::Config.to_lockfile_path(config_path)

  subcommand = Abbrev.abbrev(['install', 'update', 'help'])[args[0]] || args[0]
  case subcommand
  when 'install'
    unless params[:frozen]
      Collection::Config.generate_lockfile(config_path: config_path, definition: Bundler.definition)
    end
    Collection::Installer.new(lockfile_path: lock_path, stdout: stdout).install_from_lockfile
  when 'update'
    # TODO: Be aware of argv to update only specified gem
    Collection::Config.generate_lockfile(config_path: config_path, definition: Bundler.definition, with_lockfile: false)
    Collection::Installer.new(lockfile_path: lock_path, stdout: stdout).install_from_lockfile
  when 'init'
    if config_path.exist?
      puts "#{config_path} already exists"
      exit 1
    end

    config_path.write(<<~'YAML')
      # Download sources
      sources:
        - type: git
          name: ruby/gem_rbs_collection
          remote: https://github.com/ruby/gem_rbs_collection.git
          revision: main
          repo_dir: gems

      # You can specify local directories as sources also.
      # - type: local
      #   path: path/to/your/local/repository

      # A directory to install the downloaded RBSs
      path: .gem_rbs_collection

      gems:
        # Skip loading rbs gem's RBS.
        # It's unnecessary if you don't use rbs as a library.
        - name: rbs
          ignore: true
    YAML
    stdout.puts "created: #{config_path}"
  when 'clean'
    unless lock_path.exist?
      puts "#{lock_path} should exist to clean"
      exit 1
    end
    Collection::Cleaner.new(lockfile_path: lock_path)
  when 'help'
    puts opts.help
  else
    puts opts.help
    exit 1
  end
end

#run_constant(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 537

def run_constant(args, options)
  # @type var context: String?
  context = nil

  OptionParser.new do |opts|
    opts.banner = <<EOU
Usage: rbs constant [options...] [name]

Resolve constant based on RBS.

Examples:

  $ rbs constant ::Object
  $ rbs constant UTF_8
  $ rbs constant --context=::Encoding UTF_8

Options:
EOU
    opts.on("--context CONTEXT", "Name of the module where the constant resolution starts") {|c| context = c }
  end.order!(args)

  unless args.size == 1
    stdout.puts "Expected one argument."
    return
  end

  loader = options.loader()
  env = Environment.from_loader(loader).resolve_type_names

  builder = DefinitionBuilder.new(env: env)
  resolver = Resolver::ConstantResolver.new(builder: builder)

  resolver_context = context ? [nil, TypeName(context).absolute!] : nil #: Resolver::context
  stdout.puts "Context: #{context}"
  const_name = TypeName(args[0])
  stdout.puts "Constant name: #{const_name}"

  if const_name.absolute?
    constant = resolver.table.constant(const_name)
  else
    head, *components = const_name.to_namespace.path
    head or raise

    constant = resolver.resolve(head, context: resolver_context)
    constant = components.inject(constant) do |const, component|
      if const
        resolver.resolve_child(const.name, component)
      end
    end
  end

  if constant
    stdout.puts " => #{constant.name}: #{constant.type}"
  else
    stdout.puts " => [no constant]"
  end
end

#run_list(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 194

def run_list(args, options)
  # @type var list: Set[:class | :module | :interface]
  list = Set[]

  OptionParser.new do |opts|
    opts.banner = <<EOB
Usage: rbs list [options...]

List classes, modules, and interfaces.

Examples:

  $ rbs list
  $ rbs list --class --module --interface

Options:
EOB
    opts.on("--class", "List classes") { list << :class }
    opts.on("--module", "List modules") { list << :module }
    opts.on("--interface", "List interfaces") { list << :interface }
  end.order!(args)

  list.merge(_ = [:class, :module, :interface]) if list.empty?

  loader = options.loader()

  env = Environment.from_loader(loader).resolve_type_names

  if list.include?(:class) || list.include?(:module)
    env.class_decls.each do |name, entry|
      case entry
      when Environment::ModuleEntry
        if list.include?(:module)
          stdout.puts "#{name} (module)"
        end
      when Environment::ClassEntry
        if list.include?(:class)
          stdout.puts "#{name} (class)"
        end
      end
    end

    env.class_alias_decls.each do |name, entry|
      case entry
      when Environment::ModuleAliasEntry
        if list.include?(:module)
          stdout.puts "#{name} (module alias)"
        end
      when Environment::ClassAliasEntry
        if list.include?(:class)
          stdout.puts "#{name} (class alias)"
        end
      end
    end
  end

  if list.include?(:interface)
    env.interface_decls.each do |name, entry|
      stdout.puts "#{name} (interface)"
    end
  end
end

#run_method(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 376

def run_method(args, options)
  # @type var kind: :instance | :singleton
  kind = :instance

  OptionParser.new do |opts|
    opts.banner = <<EOU
Usage: rbs method [options...] [type_name] [method_name]

Show the information of the method specified by type_name and method_name.

Examples:

  $ rbs method --instance Kernel puts
  $ rbs method --singleton String try_convert

Options:
EOU
    opts.on("--instance", "Show an instance method (default)") { kind = :instance }
    opts.on("--singleton", "Show a singleton method") { kind = :singleton }
  end.order!(args)

  unless args.size == 2
    stdout.puts "Expected two arguments, but given #{args.size}."
    return
  end

  loader = options.loader()
  env = Environment.from_loader(loader).resolve_type_names

  builder = DefinitionBuilder.new(env: env)
  type_name = TypeName(args[0]).absolute!
  method_name = args[1].to_sym

  unless env.module_name?(type_name)
    stdout.puts "Cannot find class: #{type_name}"
    return
  end

  definition = case kind
               when :instance
                 builder.build_instance(type_name)
               when :singleton
                 builder.build_singleton(type_name)
               else
                 raise
               end

  method = definition.methods[method_name]

  unless method
    stdout.puts "Cannot find method: #{method_name}"
    return
  end

  stdout.puts "#{type_name}#{kind == :instance ? "#" : "."}#{method_name}"
  stdout.puts "  defined_in: #{method.defined_in}"
  stdout.puts "  implementation: #{method.implemented_in}"
  stdout.puts "  accessibility: #{method.accessibility}"
  stdout.puts "  types:"
  separator = " "
  for type in method.method_types
    stdout.puts "    #{separator} #{type}"
    separator = "|"
  end
end

#run_methods(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 320

def run_methods(args, options)
  # @type var kind: :instance | :singleton
  kind = :instance
  inherit = true

  OptionParser.new do |opts|
    opts.banner = <<EOU
Usage: rbs methods [options...] [type_name]

Show methods defined in the class or module.

Examples:

  $ rbs methods --instance Kernel
  $ rbs methods --singleton --no-inherit String

Options:
EOU
    opts.on("--instance", "Show instance methods (default)") { kind = :instance }
    opts.on("--singleton", "Show singleton methods") { kind = :singleton }
    opts.on("--[no-]inherit", "Show methods defined in super class and mixed modules too") {|v| inherit = v }
  end.order!(args)

  unless args.size == 1
    stdout.puts "Expected one argument."
    return
  end

  loader = options.loader()

  env = Environment.from_loader(loader).resolve_type_names

  builder = DefinitionBuilder.new(env: env)
  type_name = TypeName(args[0]).absolute!

  if env.module_name?(type_name)
    definition = case kind
                 when :instance
                   builder.build_instance(type_name)
                 when :singleton
                   builder.build_singleton(type_name)
                 else
                   raise
                 end

    definition.methods.keys.sort.each do |name|
      method = definition.methods[name]
      if inherit || method.implemented_in == type_name
        stdout.puts "#{name} (#{method.accessibility})"
      end
    end
  else
    stdout.puts "Cannot find class: #{type_name}"
  end
end

#run_parse(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 923

def run_parse(args, options)
  parse_method = :parse_signature
  # @type var e_code: String?
  e_code = nil

  OptionParser.new do |opts|
    opts.banner = <<-EOB
Usage: rbs parse [files...]

Parse given RBS files and print syntax errors.

Examples:

  $ rbs parse sig/app/models.rbs sig/app/controllers.rbs

Options:
    EOB

    opts.on('-e CODE', 'One line RBS script to parse') { |e| e_code = e }
    opts.on('--type', 'Parse code as a type') { |e| parse_method = :parse_type }
    opts.on('--method-type', 'Parse code as a method type') { |e| parse_method = :parse_method_type }
  end.parse!(args)

  syntax_error = false
  bufs = args.flat_map do |path|
    path = Pathname(path)
    FileFinder.each_file(path, skip_hidden: false, immediate: true).map do |file_path|
      Buffer.new(content: file_path.read, name: file_path)
    end
  end
  bufs << Buffer.new(content: e_code, name: '-e') if e_code

  bufs.each do |buf|
    RBS.logger.info "Parsing #{buf.name}..."
    case parse_method
    when :parse_signature
      Parser.parse_signature(buf)
    else
      Parser.public_send(parse_method, buf, require_eof: true)
    end
  rescue RBS::ParsingError => ex
    stdout.puts ex.message
    syntax_error = true
  end

  exit 1 if syntax_error
end

#run_paths(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 595

def run_paths(args, options)
  OptionParser.new do |opts|
    opts.banner = <<EOU
Usage: rbs paths

Show paths to directories where the RBS files are loaded from.

Examples:

  $ rbs paths
  $ rbs -r set paths
EOU
  end.parse!(args)

  loader = options.loader()

  kind_of = -> (path) {
    # @type var path: Pathname
    case
    when path.file?
      "file"
    when path.directory?
      "dir"
    when !path.exist?
      "absent"
    else
      "unknown"
    end
  }

  loader.each_dir do |source, dir|
    case source
    when :core
      stdout.puts "#{dir} (#{kind_of[dir]}, core)"
    when Pathname
      stdout.puts "#{dir} (#{kind_of[dir]})"
    when EnvironmentLoader::Library
      stdout.puts "#{dir} (#{kind_of[dir]}, library, name=#{source.name})"
    end
  end
end

#run_prototype(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 637

def run_prototype(args, options)
  format = args.shift

  case format
  when "rbi", "rb"
    run_prototype_file(format, args)
  when "runtime"
    require_libs = []
    relative_libs = []
    merge = false
    owners_included = []

    OptionParser.new do |opts|
      opts.banner = <<EOU
Usage: rbs prototype runtime [options...] [pattern...]

Generate RBS prototype based on runtime introspection.
It loads Ruby code specified in [options] and generates RBS prototypes for classes matches to [pattern].

Examples:

  $ rbs prototype runtime String
  $ rbs prototype runtime --require set Set
  $ rbs prototype runtime -R lib/rbs RBS::*

Options:
EOU
      opts.on("-r", "--require LIB", "Load library using `require`") do |lib|
        require_libs << lib
      end
      opts.on("-R", "--require-relative LIB", "Load library using `require_relative`") do |lib|
        relative_libs << lib
      end
      opts.on("--merge", "Merge generated prototype RBS with existing RBS") do
        merge = true
      end
      opts.on("--method-owner CLASS", "Generate method prototypes if the owner of the method is [CLASS]") do |klass|
        owners_included << klass
      end
    end.parse!(args)

    loader = options.loader()
    env = Environment.from_loader(loader).resolve_type_names

    require_libs.each do |lib|
      require(lib)
    end

    relative_libs.each do |lib|
      eval("require_relative(lib)", binding, "rbs")
    end

    decls = Prototype::Runtime.new(patterns: args, env: env, merge: merge, owners_included: owners_included).decls

    writer = Writer.new(out: stdout)
    writer.write decls
  else
    stdout.puts <<EOU
Usage: rbs prototype [generator...] [args...]

Generate prototype of RBS files.
Supported generators are rb, rbi, runtime.

Examples:

  $ rbs prototype rb foo.rb
  $ rbs prototype rbi foo.rbi
  $ rbs prototype runtime String
EOU
    exit 1
  end
end

#run_prototype_file(format, args) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 710

def run_prototype_file(format, args)
  availability = unless has_parser?
                   "\n** This command does not work on this interpreter (#{RUBY_ENGINE}) **\n"
                 end

  # @type var output_dir: Pathname?
  output_dir = nil
  # @type var base_dir: Pathname?
  base_dir = nil
  # @type var force: bool
  force = false

  opts = OptionParser.new
  opts.banner = <<EOU
Usage: rbs prototype #{format} [files...]
#{availability}
Generate RBS prototype from source code.
It parses specified Ruby code and and generates RBS prototypes.

It only works on MRI because it parses Ruby code with `RubyVM::AbstractSyntaxTree`.

Examples:

  $ rbs prototype rb lib/foo.rb
  $ rbs prototype rbi sorbet/rbi/foo.rbi

You can run the tool in *batch* mode by passing `--out-dir` option.

  $ rbs prototype rb --out-dir=sig lib/foo.rb
  $ rbs prototype rbi --out-dir=sig/models --base-dir=app/models app/models
EOU

  opts.on("--out-dir=DIR", "Specify the path to save the generated RBS files") do |path|
    output_dir = Pathname(path)
  end

  opts.on("--base-dir=DIR", "Specify the path to calculate the relative path to save the generated RBS files") do |path|
    base_dir = Pathname(path)
  end

  opts.on("--force", "Overwrite existing RBS files") do
    force = true
  end

  opts.parse!(args)

  unless has_parser?
    stdout.puts "Not supported on this interpreter (#{RUBY_ENGINE})."
    exit 1
  end

  if args.empty?
    stdout.puts opts
    return nil
  end

  new_parser = -> do
    case format
    when "rbi"
      Prototype::RBI.new()
    when "rb"
      Prototype::RB.new()
    else
      raise
    end
  end

  input_paths = args.map {|arg| Pathname(arg) }

  if output_dir
    # @type var skip_paths: Array[Pathname]
    skip_paths = []

    # batch mode
    input_paths.each do |path|
      stdout.puts "Processing `#{path}`..."
      ruby_files =
        if path.file?
          [path]
        else
          path.glob("**/*.rb").sort
        end

      ruby_files.each do |file_path|
        stdout.puts "  Generating RBS for `#{file_path}`..."

        relative_path =
          if base_dir
            file_path.relative_path_from(base_dir)
          else
            if top = file_path.descend.first
              case
              when top == Pathname("lib")
                file_path.relative_path_from(top)
              when top == Pathname("app")
                file_path.relative_path_from(top)
              else
                file_path
              end
            else
              file_path
            end
          end
        relative_path = relative_path.cleanpath()

        if relative_path.absolute? || relative_path.descend.first&.to_s == ".."
          stdout.puts "  ⚠️  Cannot write the RBS to outside of the output dir: `#{relative_path}`"
          next
        end

        output_path = (output_dir + relative_path).sub_ext(".rbs")

        parser = new_parser[]
        parser.parse file_path.read()

        if output_path.file?
          if force
            stdout.puts "    - Writing RBS to existing file `#{output_path}`..."
          else
            stdout.puts "    - Skipping existing file `#{output_path}`..."
            skip_paths << file_path
            next
          end
        else
          stdout.puts "    - Writing RBS to `#{output_path}`..."
        end

        (output_path.parent).mkpath
        output_path.open("w") do |io|
          writer = Writer.new(out: io)
          writer.write(parser.decls)
        end
      end
    end

    unless skip_paths.empty?
      stdout.puts
      stdout.puts ">>>> Skipped existing #{skip_paths.size} files. Use `--force` option to update the files."
      command = original_args.take(original_args.size - input_paths.size)

      skip_paths.take(10).each do |path|
        stdout.puts "  #{defined?(Bundler) ? "bundle exec " : ""}rbs #{Shellwords.join(command)} --force #{Shellwords.escape(path.to_s)}"
      end
      if skip_paths.size > 10
        stdout.puts "  ..."
      end
    end
  else
    # file mode
    parser = new_parser[]

    input_paths.each do |file|
      parser.parse file.read()
    end

    writer = Writer.new(out: stdout)
    writer.write parser.decls
  end
end

#run_subtract(args, _) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 1177

def run_subtract(args, _)
  write_to_file = false
  # @type var subtrahend_paths: Array[String]
  subtrahend_paths = []

  opts = OptionParser.new do |opts|
    opts.banner = <<~HELP
      Usage:
        rbs subtract [options...] minuend.rbs [minuend2.rbs, ...] subtrahend.rbs
        rbs subtract [options...] minuend.rbs [minuend2.rbs, ...] --subtrahend subtrahend_1.rbs --subtrahend subtrahend_2.rbs

      Remove duplications between RBS files.

      Examples:

        # Generate RBS files from the codebase.
        $ rbs prototype rb lib/ > generated.rbs

        # Write more descrictive types by hand.
        $ $EDITOR handwritten.rbs

        # Remove hand-written method definitions from generated.rbs.
        $ rbs subtract --write generated.rbs handwritten.rbs

      Options:
    HELP
    opts.on('-w', '--write', 'Overwrite files directry') { write_to_file = true }
    opts.on('--subtrahend=PATH', '') { |path| subtrahend_paths << path }
    opts.parse!(args)
  end

  if subtrahend_paths.empty?
    *minuend_paths, subtrahend_path = args
    unless subtrahend_path
      stdout.puts opts.help
      exit 1
    end
    subtrahend_paths << subtrahend_path
  else
    minuend_paths = args
  end

  if minuend_paths.empty?
    stdout.puts opts.help
    exit 1
  end

  subtrahend = Environment.new.tap do |env|
    loader = EnvironmentLoader.new(core_root: nil)
    subtrahend_paths.each do |path|
      loader.add(path: Pathname(path))
    end
    loader.load(env: env)
  end

  minuend_paths.each do |minuend_path|
    FileFinder.each_file(Pathname(minuend_path), immediate: true, skip_hidden: true) do |rbs_path|
      buf = Buffer.new(name: rbs_path, content: rbs_path.read)
      _, dirs, decls = Parser.parse_signature(buf)
      subtracted = Subtractor.new(decls, subtrahend).call

      io = StringIO.new
      w = Writer.new(out: io)
      w.write(dirs)
      w.write(subtracted)

      if write_to_file
        rbs_path.write(io.string)
      else
        stdout.puts(io.string)
      end
    end
  end
end

#run_test(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 1028

def run_test(args, options)
  # @type var unchecked_classes: Array[String]
  unchecked_classes = []
  # @type var targets: Array[String]
  targets = []
  # @type var sample_size: String?
  sample_size = nil
  # @type var double_suite: String?
  double_suite = nil

  (opts = OptionParser.new do |opts|
    opts.banner = <<EOB
Usage: rbs [rbs options...] test [test options...] COMMAND

Examples:

  $ rbs test rake test
  $ rbs --log-level=debug test --target SomeModule::* rspec
  $ rbs test --target SomeModule::* --target AnotherModule::* --target SomeClass rake test

Options:
EOB
    opts.on("--target TARGET", "Sets the runtime test target") do |target|
      targets << target
    end

    opts.on("--sample-size SAMPLE_SIZE", "Sets the sample size") do |size|
      sample_size = size
    end

    opts.on("--unchecked-class UNCHECKED_CLASS", "Sets the class that would not be checked") do |unchecked_class|
      unchecked_classes << unchecked_class
    end

    opts.on("--double-suite DOUBLE_SUITE", "Sets the double suite in use (currently supported: rspec | minitest)") do |suite|
      double_suite = suite
    end
  end).order!(args)

  if args.length.zero?
    stdout.puts opts.help
    exit 1
  end

  # @type var env_hash: Hash[String, String?]
  env_hash = {
    'RUBYOPT' => "#{ENV['RUBYOPT']} -rrbs/test/setup",
    'RBS_TEST_OPT' => test_opt(options),
    'RBS_TEST_LOGLEVEL' => %w(DEBUG INFO WARN ERROR FATAL)[RBS.logger_level || 5] || "UNKNOWN",
    'RBS_TEST_SAMPLE_SIZE' => sample_size,
    'RBS_TEST_DOUBLE_SUITE' => double_suite,
    'RBS_TEST_UNCHECKED_CLASSES' => (unchecked_classes.join(',') unless unchecked_classes.empty?),
    'RBS_TEST_TARGET' => (targets.join(',') unless targets.empty?)
  }

  # @type var out: String
  # @type var err: String
  out, err, status = __skip__ = Open3.capture3(env_hash, *args)
  stdout.print(out)
  stderr.print(err)

  status
end

#run_validate(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 442

def run_validate(args, options)
  OptionParser.new do |opts|
    opts.banner = <<EOU
Usage: rbs validate

Validate RBS files. It ensures the type names in RBS files are present and the type applications have correct arity.

Examples:

  $ rbs validate
EOU

    opts.on("--silent") do
      @stdout = StringIO.new
    end
  end.parse!(args)

  loader = options.loader()
  env = Environment.from_loader(loader).resolve_type_names

  builder = DefinitionBuilder.new(env: env)
  validator = Validator.new(env: env, resolver: Resolver::TypeNameResolver.new(env))

  env.class_decls.each do |name, decl|
    stdout.puts "Validating class/module definition: `#{name}`..."
    builder.build_instance(name).each_type do |type|
      validator.validate_type type, context: nil
    end
    builder.build_singleton(name).each_type do |type|
      validator.validate_type type, context: nil
    end

    d = decl.primary.decl

    validator.validate_type_params(
      d.type_params,
      type_name: name,
      location: d.location&.aref(:type_params)
    )

    decl.decls.each do |d|
      d.decl.each_member do |member|
        case member
        when AST::Members::MethodDefinition
          validator.validate_method_definition(member, type_name: name)
        end
      end
    end
  end

  env.class_alias_decls.each do |name, entry|
    stdout.puts "Validating class/module alias definition: `#{name}`..."
    validator.validate_class_alias(entry: entry)
  end

  env.interface_decls.each do |name, decl|
    stdout.puts "Validating interface: `#{name}`..."
    builder.build_interface(name).each_type do |type|
      validator.validate_type type, context: nil
    end

    validator.validate_type_params(
      decl.decl.type_params,
      type_name: name,
      location: decl.decl.location&.aref(:type_params)
    )

    decl.decl.members.each do |member|
      case member
      when AST::Members::MethodDefinition
        validator.validate_method_definition(member, type_name: name)
      end
    end
  end

  env.constant_decls.each do |name, const|
    stdout.puts "Validating constant: `#{name}`..."
    validator.validate_type const.decl.type, context: const.context
    builder.ensure_namespace!(name.namespace, location: const.decl.location)
  end

  env.global_decls.each do |name, global|
    stdout.puts "Validating global: `#{name}`..."
    validator.validate_type global.decl.type, context: nil
  end

  env.type_alias_decls.each do |name, decl|
    stdout.puts "Validating alias: `#{name}`..."
    builder.expand_alias1(name).tap do |type|
      validator.validate_type type, context: nil
    end
    validator.validate_type_alias(entry: decl)
  end
end

#run_vendor(args, options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 870

def run_vendor(args, options)
  clean = false
  vendor_dir = Pathname("vendor/sigs")

  OptionParser.new do |opts|
    opts.banner = <<-EOB
Usage: rbs vendor [options...] [gems...]

Vendor signatures in the project directory.
This command ignores the RBS loading global options, `-r` and `-I`.

Examples:

  $ rbs vendor
  $ rbs vendor --vendor-dir=sig
  $ rbs vendor --no-stdlib

Options:
    EOB

    opts.on("--[no-]clean", "Clean vendor directory (default: no)") do |v|
      clean = v
    end

    opts.on("--vendor-dir [DIR]", "Specify the directory for vendored signatures (default: vendor/sigs)") do |path|
      vendor_dir = Pathname(path)
    end
  end.parse!(args)

  stdout.puts "Vendoring signatures to #{vendor_dir}..."

  loader = options.loader()

  args.each do |gem|
    name, version = gem.split(/:/, 2)

    next unless name

    stdout.puts "  Loading library: #{name}, version=#{version}..."
    loader.add(library: name, version: version)
  end

  vendorer = Vendorer.new(vendor_dir: vendor_dir, loader: loader)

  if clean
    stdout.puts "  Deleting #{vendor_dir}..."
    vendorer.clean!
  end

  stdout.puts "  Copying RBS files..."
  vendorer.copy!
end

#test_opt(options) ⇒ Object 



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# File 'lib/rbs/cli.rb', line 1018

def test_opt options
  opts = []

  opts.push(*options.repos.map {|dir| "--repo #{Shellwords.escape(dir)}"})
  opts.push(*options.dirs.map {|dir| "-I #{Shellwords.escape(dir)}"})
  opts.push(*options.libs.map {|lib| "-r#{Shellwords.escape(lib)}"})

  opts.empty? ? nil : opts.join(" ")
end