Class: Gem::Specification

# File 'lib/rubygems/specification.rb', line 876

def self.all=(specs)
  specification_record.all = specs
end

# File 'lib/rubygems/specification.rb', line 908

def self.dirs
  @@dirs ||= Gem::SpecificationRecord.dirs_from(Gem.path)
end

# File 'lib/rubygems/specification.rb', line 916

def self.dirs=(dirs)
  reset

  @@dirs = Gem::SpecificationRecord.dirs_from(Array(dirs))
end

# File 'lib/rubygems/specification.rb', line 1059

def self._latest_specs(specs, prerelease = false) # :nodoc:
  result = {}

  specs.reverse_each do |spec|
    unless prerelease
      next if spec.version.prerelease?
    end

    result[spec.name] = spec
  end

  result.map(&:last).flatten.sort_by(&:name)
end

# File 'lib/rubygems/specification.rb', line 1230

def self._load(str)
  Gem.load_yaml
  Gem.load_safe_marshal

  yaml_set = false
  retry_count = 0

  array = begin
    Gem::SafeMarshal.safe_load str
  rescue ArgumentError => e
    # Avoid an infinite retry loop when the argument error has nothing to do
    # with the classes not being defined.
    # 1 retry each allowed in case all 3 of
    # - YAML
    # - YAML::Syck::DefaultKey
    # - YAML::PrivateType
    # need to be defined
    raise if retry_count >= 3

    #
    # Some very old marshaled specs included references to `YAML::PrivateType`
    # and `YAML::Syck::DefaultKey` constants due to bugs in the old emitter
    # that generated them. Workaround the issue by defining the necessary
    # constants and retrying.
    #
    message = e.message
    raise unless message.include?("YAML::")

    unless Object.const_defined?(:YAML)
      Object.const_set "YAML", Psych
      yaml_set = true
    end

    if message.include?("YAML::Syck::")
      YAML.const_set "Syck", YAML unless YAML.const_defined?(:Syck)

      YAML::Syck.const_set "DefaultKey", Class.new if message.include?("YAML::Syck::DefaultKey") && !YAML::Syck.const_defined?(:DefaultKey)
    elsif message.include?("YAML::PrivateType") && !YAML.const_defined?(:PrivateType)
      YAML.const_set "PrivateType", Class.new
    end

    retry_count += 1
    retry
  ensure
    Object.__send__(:remove_const, "YAML") if yaml_set
  end

  spec = Gem::Specification.new
  spec.instance_variable_set :@specification_version, array[1]

  current_version = CURRENT_SPECIFICATION_VERSION

  field_count = if spec.specification_version > current_version
    spec.instance_variable_set :@specification_version,
                               current_version
    MARSHAL_FIELDS[current_version]
  else
    MARSHAL_FIELDS[spec.specification_version]
  end

  if array.size < field_count
    raise TypeError, "invalid Gem::Specification format #{array.inspect}"
  end

  spec.instance_variable_set :@rubygems_version,          array[0]
  # spec version
  spec.instance_variable_set :@name,                      array[2]
  spec.instance_variable_set :@version,                   array[3]
  spec.date =                                             array[4]
  spec.instance_variable_set :@summary,                   array[5]
  spec.instance_variable_set :@required_ruby_version,     array[6]
  spec.instance_variable_set :@required_rubygems_version, array[7]
  spec.instance_variable_set :@original_platform,         array[8]
  spec.instance_variable_set :@dependencies,              array[9]
  # offset due to rubyforge_project removal
  spec.instance_variable_set :@email,                     array[11]
  spec.instance_variable_set :@authors,                   array[12]
  spec.instance_variable_set :@description,               array[13]
  spec.instance_variable_set :@homepage,                  array[14]
  spec.instance_variable_set :@has_rdoc,                  array[15]
  spec.instance_variable_set :@new_platform,              array[16]
  spec.instance_variable_set :@platform,                  array[16].to_s
  spec.instance_variable_set :@license,                   array[17]
  spec.instance_variable_set :@metadata,                  array[18]
  spec.instance_variable_set :@loaded,                    false
  spec.instance_variable_set :@activated,                 false

  spec
end

# File 'lib/rubygems/specification.rb', line 827

def self._resort!(specs) # :nodoc:
  specs.sort! do |a, b|
    names = a.name <=> b.name
    next names if names.nonzero?
    versions = b.version <=> a.version
    next versions if versions.nonzero?
    Gem::Platform.sort_priority(b.platform)
  end
end

# File 'lib/rubygems/specification.rb', line 852

def self.add_spec(spec)
  specification_record.add_spec(spec)
end

# File 'lib/rubygems/specification.rb', line 883

def self.all_names
  specification_record.all_names
end

# File 'lib/rubygems/specification.rb', line 892

def self.array_attributes
  @@array_attributes.dup
end

# File 'lib/rubygems/specification.rb', line 901

def self.attribute_names
  @@attributes.dup
end

# File 'lib/rubygems/specification.rb', line 767

def self.clear_load_cache # :nodoc:
  @load_cache_mutex.synchronize do
    @load_cache.clear
  end
end

# File 'lib/rubygems/specification.rb', line 803

def self.default_stubs(pattern = "*.gemspec")
  base_dir = Gem.default_dir
  gems_dir = File.join base_dir, "gems"
  gemspec_stubs_in(Gem.default_specifications_dir, pattern) do |path|
    Gem::StubSpecification.default_gemspec_stub(path, base_dir, gems_dir)
  end
end

# File 'lib/rubygems/specification.rb', line 928

def self.each(&block)
  specification_record.each(&block)
end

# File 'lib/rubygems/specification.rb', line 774

def self.each_gemspec(dirs) # :nodoc:
  dirs.each do |dir|
    Gem::Util.glob_files_in_dir("*.gemspec", dir).each do |path|
      yield path
    end
  end
end

# File 'lib/rubygems/specification.rb', line 786

def self.each_spec(dirs) # :nodoc:
  each_gemspec(dirs) do |path|
    spec = self.load path
    yield spec if spec
  end
end

# File 'lib/rubygems/specification.rb', line 981

def self.find_active_stub_by_path(path)
  specification_record.find_active_stub_by_path(path)
end

# File 'lib/rubygems/specification.rb', line 942

def self.find_all_by_full_name(full_name)
  stubs.select {|s| s.full_name == full_name }.map(&:to_spec)
end

# File 'lib/rubygems/specification.rb', line 935

def self.find_all_by_name(name, *requirements)
  specification_record.find_all_by_name(name, *requirements)
end

# File 'lib/rubygems/specification.rb', line 958

def self.find_by_full_name(full_name)
  stubs.find {|s| s.full_name == full_name }&.to_spec
end

# File 'lib/rubygems/specification.rb', line 950

def self.find_by_name(name, *requirements)
  requirements = Gem::Requirement.default if requirements.empty?

  Gem::Dependency.new(name, *requirements).to_spec
end

# File 'lib/rubygems/specification.rb', line 965

def self.find_by_path(path)
  specification_record.find_by_path(path)
end

# File 'lib/rubygems/specification.rb', line 988

def self.find_in_unresolved(path)
  unresolved_specs.find_all {|spec| spec.contains_requirable_file? path }
end

# File 'lib/rubygems/specification.rb', line 996

def self.find_in_unresolved_tree(path)
  unresolved_specs.each do |spec|
    spec.traverse do |_from_spec, _dep, to_spec, trail|
      if to_spec.has_conflicts? || to_spec.conficts_when_loaded_with?(trail)
        :next
      else
        return trail.reverse if to_spec.contains_requirable_file? path
      end
    end
  end

  []
end

# File 'lib/rubygems/specification.rb', line 973

def self.find_inactive_by_path(path)
  specification_record.find_inactive_by_path(path)
end

# File 'lib/rubygems/specification.rb', line 1023

def self.from_yaml(input)
  Gem.load_yaml

  input = normalize_yaml_input input
  spec = Gem::SafeYAML.safe_load input

  if spec && spec.class == FalseClass
    raise Gem::EndOfYAMLException
  end

  unless Gem::Specification === spec
    raise Gem::Exception, "YAML data doesn't evaluate to gem specification"
  end

  spec.specification_version ||= NONEXISTENT_SPECIFICATION_VERSION
  spec.reset_nil_attributes_to_default
  spec.flatten_require_paths

  spec
end

# File 'lib/rubygems/specification.rb', line 782

def self.gemspec_stubs_in(dir, pattern) # :nodoc:
  Gem::Util.glob_files_in_dir(pattern, dir).map {|path| yield path }.select(&:valid?)
end

# File 'lib/rubygems/specification.rb', line 1055

def self.latest_spec_for(name)
  specification_record.latest_spec_for(name)
end

# File 'lib/rubygems/specification.rb', line 1048

def self.latest_specs(prerelease = false)
  specification_record.latest_specs(prerelease)
end

# File 'lib/rubygems/specification.rb', line 1076

def self.load(file)
  return unless file

  spec = @load_cache_mutex.synchronize { @load_cache[file] }
  return spec if spec

  return unless File.file?(file)

  code = Gem.open_file(file, "r:UTF-8:-", &:read)

  begin
    spec = eval code, binding, file

    if Gem::Specification === spec
      spec.loaded_from = File.expand_path file.to_s
      @load_cache_mutex.synchronize do
        prev = @load_cache[file]
        if prev
          spec = prev
        else
          @load_cache[file] = spec
        end
      end
      return spec
    end

    warn "[#{file}] isn't a Gem::Specification (#{spec.class} instead)."
  rescue SignalException, SystemExit
    raise
  rescue SyntaxError, StandardError => e
    warn "Invalid gemspec in [#{file}]: #{e}"
  end

  nil
end

# File 'lib/rubygems/specification.rb', line 840

def self.load_defaults
  each_spec([Gem.default_specifications_dir]) do |spec|
    # #load returns nil if the spec is bad, so we just ignore
    # it at this stage
    Gem.register_default_spec(spec)
  end
end

# File 'lib/rubygems/specification.rb', line 1115

def self.non_nil_attributes
  @@non_nil_attributes.dup
end

# File 'lib/rubygems/specification.rb', line 1122

def self.normalize_yaml_input(input)
  result = input.respond_to?(:read) ? input.read : input
  result = "--- " + result unless result.start_with?("--- ")
  result = result.dup
  result.gsub!(/ !!null \n/, " \n")
  # date: 2011-04-26 00:00:00.000000000Z
  # date: 2011-04-26 00:00:00.000000000 Z
  result.gsub!(/^(date: \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+?)Z/, '\1 Z')
  result
end

# File 'lib/rubygems/specification.rb', line 1140

def self.outdated
  outdated_and_latest_version.map {|local, _| local.name }
end

# File 'lib/rubygems/specification.rb', line 1151

def self.outdated_and_latest_version
  return enum_for __method__ unless block_given?

  # TODO: maybe we should switch to rubygems' version service?
  fetcher = Gem::SpecFetcher.fetcher

  latest_specs(true).each do |local_spec|
    dependency =
      Gem::Dependency.new local_spec.name, ">= #{local_spec.version}"

    remotes, = fetcher.search_for_dependency dependency
    remotes  = remotes.map {|n, _| n.version }

    latest_remote = remotes.sort.last

    yield [local_spec, latest_remote] if
      latest_remote && local_spec.version < latest_remote
  end

  nil
end

# File 'lib/rubygems/specification.rb', line 859

def self.remove_spec(spec)
  specification_record.remove_spec(spec)
end

# File 'lib/rubygems/specification.rb', line 1176

def self.required_attribute?(name)
  @@required_attributes.include? name.to_sym
end

# File 'lib/rubygems/specification.rb', line 1183

def self.required_attributes
  @@required_attributes.dup
end

# File 'lib/rubygems/specification.rb', line 1191

def self.reset
  @@dirs = nil
  Gem.pre_reset_hooks.each(&:call)
  @specification_record = nil
  clear_load_cache
  unresolved = unresolved_deps
  unless unresolved.empty?
    warn "WARN: Unresolved or ambiguous specs during Gem::Specification.reset:"
    unresolved.values.each do |dep|
      warn "      #{dep}"

      versions = find_all_by_name(dep.name)
      unless versions.empty?
        warn "      Available/installed versions of this gem:"
        versions.each {|s| warn "      - #{s.version}" }
      end
    end
    warn "WARN: Clearing out unresolved specs. Try 'gem cleanup <gem>'"
    warn "Please report a bug if this causes problems."
    unresolved.clear
  end
  Gem.post_reset_hooks.each(&:call)
end

# File 'lib/rubygems/specification.rb', line 1218

def self.specification_record
  @specification_record ||= Gem::SpecificationRecord.new(dirs)
end

# File 'lib/rubygems/specification.rb', line 796

def self.stubs
  specification_record.stubs
end

# File 'lib/rubygems/specification.rb', line 815

def self.stubs_for(name)
  specification_record.stubs_for(name)
end

# File 'lib/rubygems/specification.rb', line 823

def self.stubs_for_pattern(pattern, match_platform = true) # :nodoc:
  specification_record.stubs_for_pattern(pattern, match_platform)
end

# File 'lib/rubygems/specification.rb', line 1223

def self.unresolved_deps
  @unresolved_deps ||= Hash.new {|h, n| h[n] = Gem::Dependency.new n }
end

# File 'lib/rubygems/specification.rb', line 1010

def self.unresolved_specs
  unresolved_deps.values.map(&:to_specs).flatten
end

# File 'lib/rubygems/specification.rb', line 1514

def author
  (val = authors) && val.first
end

# File 'lib/rubygems/specification.rb', line 415

def author=(o)
  self.authors = [o]
end

# File 'lib/rubygems/specification.rb', line 1523

def authors
  @authors ||= []
end

# File 'lib/rubygems/specification.rb', line 270

def authors=(value)
  @authors = Array(value).flatten.grep(String)
end

# File 'lib/rubygems/specification.rb', line 741

attr_accessor :autorequire # :nodoc:

# File 'lib/rubygems/specification.rb', line 426

attr_accessor :bindir

# File 'lib/rubygems/specification.rb', line 432

attr_accessor :cert_chain

# File 'lib/rubygems/specification.rb', line 1669

def date
  @date ||= Time.utc(*Gem.source_date_epoch.utc.to_a[3..5].reverse)
end

# File 'lib/rubygems/specification.rb', line 1689

def date=(date)
  # We want to end up with a Time object with one-day resolution.
  # This is the cleanest, most-readable, faster-than-using-Date
  # way to do it.
  @date = case date
          when String then
            if DateTimeFormat =~ date
              Time.utc($1.to_i, $2.to_i, $3.to_i)
            else
              raise(Gem::InvalidSpecificationException,
                    "invalid date format in specification: #{date.inspect}")
            end
          when Time, DateLike then
            Time.utc(date.year, date.month, date.day)
          else
            TODAY
  end
end

# File 'lib/rubygems/specification.rb', line 1714

def default_executable # :nodoc:
  if defined?(@default_executable) && @default_executable
    result = @default_executable
  elsif @executables && @executables.size == 1
    result = Array(@executables).first
  else
    result = nil
  end
  result
end

# File 'lib/rubygems/specification.rb', line 748

attr_writer :default_executable

# File 'lib/rubygems/specification.rb', line 300

attr_reader :description

# File 'lib/rubygems/specification.rb', line 1775

def description=(str)
  @description = str.to_s
end

# File 'lib/rubygems/specification.rb', line 310

attr_accessor :email

# File 'lib/rubygems/specification.rb', line 1830

def executable
  (val = executables) && val.first
end

# File 'lib/rubygems/specification.rb', line 1837

def executable=(o)
  self.executables = [o]
end

# File 'lib/rubygems/specification.rb', line 574

def executables
  @executables ||= []
end

# File 'lib/rubygems/specification.rb', line 1844

def executables=(value)
  @executables = Array(value)
end

# File 'lib/rubygems/specification.rb', line 591

def extensions
  @extensions ||= []
end

# File 'lib/rubygems/specification.rb', line 1851

def extensions=(extensions)
  @extensions = Array extensions
end

# File 'lib/rubygems/specification.rb', line 607

def extra_rdoc_files
  @extra_rdoc_files ||= []
end

# File 'lib/rubygems/specification.rb', line 1858

def extra_rdoc_files=(files)
  @extra_rdoc_files = Array files
end

# File 'lib/rubygems/specification.rb', line 250

def files
  # DO NOT CHANGE TO ||= ! This is not a normal accessor. (yes, it sucks)
  # DOC: Why isn't it normal? Why does it suck? How can we fix this?
  @files = [@files,
            @test_files,
            add_bindir(@executables),
            @extra_rdoc_files,
            @extensions].flatten.compact.uniq.sort
end

# File 'lib/rubygems/specification.rb', line 1874

def files=(files)
  @files = Array files
end

# File 'lib/rubygems/specification.rb', line 1651

def has_conflicts?
  return true unless Gem.env_requirement(name).satisfied_by?(version)
  runtime_dependencies.any? do |dep|
    spec = Gem.loaded_specs[dep.name]
    spec && !spec.satisfies_requirement?(dep)
  end
rescue ArgumentError => e
  raise e, "#{name} #{version}: #{e.message}"
end

# File 'lib/rubygems/specification.rb', line 1931

def has_rdoc=(ignored) # :nodoc:
  @has_rdoc = true
end

# File 'lib/rubygems/specification.rb', line 1936

alias_method :has_rdoc?, :has_rdoc # :nodoc:

# File 'lib/rubygems/specification.rb', line 1947

alias_method :has_test_suite?, :has_unit_tests?

# File 'lib/rubygems/specification.rb', line 1942

def has_unit_tests? # :nodoc:
  !test_files.empty?
end

# File 'lib/rubygems/specification.rb', line 319

attr_accessor :homepage

# File 'lib/rubygems/specification.rb', line 616

def installed_by_version # :nodoc:
  @installed_by_version ||= Gem::Version.new(0)
end

# File 'lib/rubygems/specification.rb', line 624

def installed_by_version=(version) # :nodoc:
  @installed_by_version = Gem::Version.new version
end

# File 'lib/rubygems/specification.rb', line 2074

def license
  licenses.first
end

# File 'lib/rubygems/specification.rb', line 351

def license=(o)
  self.licenses = [o]
end

# File 'lib/rubygems/specification.rb', line 2083

def licenses
  @licenses ||= []
end

# File 'lib/rubygems/specification.rb', line 368

def licenses=(licenses)
  @licenses = Array licenses
end

# File 'lib/rubygems/specification.rb', line 403

attr_accessor :metadata

# File 'lib/rubygems/specification.rb', line 2120

def missing_extensions?
  return false if extensions.empty?
  return false if default_gem?
  return false if File.exist? gem_build_complete_path

  true
end

# File 'lib/rubygems/specification.rb', line 203

attr_accessor :name

# File 'lib/rubygems/specification.rb', line 2170

def original_platform # :nodoc:
  @original_platform ||= platform
end

# File 'lib/rubygems/specification.rb', line 754

attr_writer :original_platform # :nodoc:

# File 'lib/rubygems/specification.rb', line 2177

def platform
  @new_platform ||= Gem::Platform::RUBY # rubocop:disable Naming/MemoizedInstanceVariableName
end

# File 'lib/rubygems/specification.rb', line 466

def platform=(platform)
  if @original_platform.nil? ||
     @original_platform == Gem::Platform::RUBY
    @original_platform = platform
  end

  case platform
  when Gem::Platform::CURRENT then
    @new_platform = Gem::Platform.local
    @original_platform = @new_platform.to_s

  when Gem::Platform then
    @new_platform = platform

  # legacy constants
  when nil, Gem::Platform::RUBY then
    @new_platform = Gem::Platform::RUBY
  when "mswin32" then # was Gem::Platform::WIN32
    @new_platform = Gem::Platform.new "x86-mswin32"
  when "i586-linux" then # was Gem::Platform::LINUX_586
    @new_platform = Gem::Platform.new "x86-linux"
  when "powerpc-darwin" then # was Gem::Platform::DARWIN
    @new_platform = Gem::Platform.new "ppc-darwin"
  else
    @new_platform = Gem::Platform.new platform
  end

  @platform = @new_platform.to_s

  invalidate_memoized_attributes
end

# File 'lib/rubygems/specification.rb', line 441

attr_accessor :post_install_message

# File 'lib/rubygems/specification.rb', line 637

def rdoc_options
  @rdoc_options ||= []
end

# File 'lib/rubygems/specification.rb', line 2243

def rdoc_options=(options)
  @rdoc_options = Array options
end

# File 'lib/rubygems/specification.rb', line 2250

def require_path
  (val = require_paths) && val.first
end

# File 'lib/rubygems/specification.rb', line 2257

def require_path=(path)
  self.require_paths = Array(path)
end

# File 'lib/rubygems/specification.rb', line 515

def require_paths=(val)
  @require_paths = Array(val)
end

# File 'lib/rubygems/specification.rb', line 284

attr_reader :required_ruby_version

# File 'lib/rubygems/specification.rb', line 667

def required_ruby_version=(req)
  @required_ruby_version = Gem::Requirement.create req

  @required_ruby_version.requirements.map! do |op, v|
    if v >= LATEST_RUBY_WITHOUT_PATCH_VERSIONS && v.release.segments.size == 4
      [op == "~>" ? "=" : op, Gem::Version.new(v.segments.tap {|s| s.delete_at(3) }.join("."))]
    else
      [op, v]
    end
  end
end

# File 'lib/rubygems/specification.rb', line 522

attr_reader :required_rubygems_version

# File 'lib/rubygems/specification.rb', line 682

def required_rubygems_version=(req)
  @required_rubygems_version = Gem::Requirement.create req
end

# File 'lib/rubygems/specification.rb', line 695

def requirements
  @requirements ||= []
end

# File 'lib/rubygems/specification.rb', line 2264

def requirements=(req)
  @requirements = Array req
end

# File 'lib/rubygems/specification.rb', line 717

attr_accessor :rubygems_version

# File 'lib/rubygems/specification.rb', line 527

attr_accessor :signing_key

# File 'lib/rubygems/specification.rb', line 761

attr_accessor :specification_version

# File 'lib/rubygems/specification.rb', line 2604

def stubbed?
  false
end

# File 'lib/rubygems/specification.rb', line 227

attr_reader :summary

# File 'lib/rubygems/specification.rb', line 2371

def summary=(str)
  @summary = str.to_s.strip.
    gsub(/(\w-)\n[ \t]*(\w)/, '\1\2').gsub(/\n[ \t]*/, " ") # so. weird.
end

# File 'lib/rubygems/specification.rb', line 2379

def test_file # :nodoc:
  (val = test_files) && val.first
end

# File 'lib/rubygems/specification.rb', line 2386

def test_file=(file) # :nodoc:
  self.test_files = [file]
end

# File 'lib/rubygems/specification.rb', line 2394

def test_files # :nodoc:
  # Handle the possibility that we have @test_suite_file but not
  # @test_files.  This will happen when an old gem is loaded via
  # YAML.
  if defined? @test_suite_file
    @test_files = [@test_suite_file].flatten
    @test_suite_file = nil
  end
  if defined?(@test_files) && @test_files
    @test_files
  else
    @test_files = []
  end
end

# File 'lib/rubygems/specification.rb', line 707

def test_files=(files) # :nodoc:
  @test_files = Array files
end

# File 'lib/rubygems/specification.rb', line 216

attr_reader :version

# File 'lib/rubygems/specification.rb', line 2597

def version=(version)
  @version = Gem::Version.create(version)
  return if @version.nil?

  invalidate_memoized_attributes
end

# File 'lib/rubygems/specification.rb', line 1324

def ==(other) # :nodoc:
  self.class === other &&
    name == other.name &&
    version == other.version &&
    platform == other.platform
end

# File 'lib/rubygems/specification.rb', line 1337

def _dump(limit)
  Marshal.dump [
    @rubygems_version,
    @specification_version,
    @name,
    @version,
    date,
    @summary,
    @required_ruby_version,
    @required_rubygems_version,
    @original_platform,
    @dependencies,
    "", # rubyforge_project
    @email,
    @authors,
    @description,
    @homepage,
    true, # has_rdoc
    @new_platform,
    @licenses,
    @metadata,
  ]
end

# File 'lib/rubygems/specification.rb', line 1428

def abbreviate
  self.files = []
  self.test_files = []
  self.rdoc_options = []
  self.extra_rdoc_files = []
  self.cert_chain = []
end

# File 'lib/rubygems/specification.rb', line 1367

def activate
  other = Gem.loaded_specs[name]
  if other
    check_version_conflict other
    return false
  end

  raise_if_conflicts

  activate_dependencies
  add_self_to_load_path

  Gem.loaded_specs[name] = self
  @activated = true
  @loaded = true

  true
end

# File 'lib/rubygems/specification.rb', line 1391

def activate_dependencies
  unresolved = Gem::Specification.unresolved_deps

  runtime_dependencies.each do |spec_dep|
    if loaded = Gem.loaded_specs[spec_dep.name]
      next if spec_dep.matches_spec? loaded

      msg = "can't satisfy '#{spec_dep}', already activated '#{loaded.full_name}'"
      e = Gem::LoadError.new msg
      e.name = spec_dep.name

      raise e
    end

    begin
      specs = spec_dep.to_specs
    rescue Gem::MissingSpecError => e
      raise Gem::MissingSpecError.new(e.name, e.requirement, "at: #{spec_file}")
    end

    if specs.size == 1
      specs.first.activate
    else
      name = spec_dep.name
      unresolved[name] = unresolved[name].merge spec_dep
    end
  end

  unresolved.delete self.name
end

# File 'lib/rubygems/specification.rb', line 732

attr_accessor :activated

# File 'lib/rubygems/specification.rb', line 1464

def add_bindir(executables)
  return nil if executables.nil?

  if @bindir
    Array(executables).map {|e| File.join(@bindir, e) }
  else
    executables
  end
rescue StandardError
  nil
end

# File 'lib/rubygems/specification.rb', line 1498

alias_method :add_dependency, :add_runtime_dependency

# File 'lib/rubygems/specification.rb', line 1481

def add_dependency_with_type(dependency, type, requirements)
  requirements = if requirements.empty?
    Gem::Requirement.default
  else
    requirements.flatten
  end

  unless dependency.respond_to?(:name) &&
         dependency.respond_to?(:requirement)
    dependency = Gem::Dependency.new(dependency.to_s, requirements, type)
  end

  dependencies << dependency
end