class Gem::BasicSpecification

# File rubygems/basic_specification.rb, line 37
def self.default_specifications_dir
  Gem.default_specifications_dir
end

# File rubygems/basic_specification.rb, line 33
def initialize
  internal_init
end

# File rubygems/basic_specification.rb, line 57
def activated?
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 66
def base_dir
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 73
def contains_requirable_file?(file)
  if @ignored
    return false
  elsif missing_extensions?
    @ignored = true

    if platform == Gem::Platform::RUBY || Gem::Platform.local === platform
      warn "Ignoring #{full_name} because its extensions are not built. " \
           "Try: gem pristine #{name} --version #{version}"
    end

    return false
  end

  is_soext = file.end_with?(".so", ".o")

  if is_soext
    have_file? file.delete_suffix(File.extname(file)), Gem.dynamic_library_suffixes
  else
    have_file? file, Gem.suffixes
  end
end

# File rubygems/basic_specification.rb, line 166
def datadir
  # TODO: drop the extra ", gem_name" which is uselessly redundant
  File.expand_path(File.join(gems_dir, full_name, "data", name))
end

# File rubygems/basic_specification.rb, line 96
def default_gem?
  loaded_from &&
    File.dirname(loaded_from) == Gem.default_specifications_dir
end

# File rubygems/basic_specification.rb, line 104
def extension_dir
  @extension_dir ||= File.expand_path(File.join(extensions_dir, full_name))
end

# File rubygems/basic_specification.rb, line 111
def extensions_dir
  Gem.default_ext_dir_for(base_dir) ||
    File.join(base_dir, "extensions", Gem::Platform.local.to_s,
              Gem.extension_api_version)
end

# File rubygems/basic_specification.rb, line 127
def full_gem_path
  # TODO: This is a heavily used method by gems, so we'll need
  # to aleast just alias it to #gem_dir rather than remove it.
  @full_gem_path ||= find_full_gem_path
end

# File rubygems/basic_specification.rb, line 138
def full_name
  if platform == Gem::Platform::RUBY || platform.nil?
    "#{name}-#{version}"
  else
    "#{name}-#{version}-#{platform}"
  end
end

# File rubygems/basic_specification.rb, line 150
def full_require_paths
  @full_require_paths ||=
    begin
      full_paths = raw_require_paths.map do |path|
        File.join full_gem_path, path
      end

      full_paths << extension_dir if have_extensions?

      full_paths
    end
end

# File rubygems/basic_specification.rb, line 193
def gem_dir
  @gem_dir ||= File.expand_path File.join(gems_dir, full_name)
end

# File rubygems/basic_specification.rb, line 201
def gems_dir
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 291
def lib_dirs_glob
  dirs = if raw_require_paths
    if raw_require_paths.size > 1
      "{#{raw_require_paths.join(",")}}"
    else
      raw_require_paths.first
    end
  else
    "lib" # default value for require_paths for bundler/inline
  end

  "#{full_gem_path}/#{dirs}"
end

# File rubygems/basic_specification.rb, line 274
def matches_for_glob(glob) # TODO: rename?
  glob = File.join(lib_dirs_glob, glob)

  Dir[glob]
end

# File rubygems/basic_specification.rb, line 215
def name
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 222
def platform
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 283
def plugins
  matches_for_glob("rubygems#{Gem.plugin_suffix_pattern}")
end

# File rubygems/basic_specification.rb, line 247
def require_paths
  return raw_require_paths unless have_extensions?

  [extension_dir].concat raw_require_paths
end

# File rubygems/basic_specification.rb, line 257
def source_paths
  paths = raw_require_paths.dup

  if have_extensions?
    ext_dirs = extensions.map do |extension|
      extension.split(File::SEPARATOR, 2).first
    end.uniq

    paths.concat ext_dirs
  end

  paths.uniq
end

# File rubygems/basic_specification.rb, line 323
def stubbed?
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 327
def this
  self
end

# File rubygems/basic_specification.rb, line 175
def to_fullpath(path)
  if activated?
    @paths_map ||= {}
    Gem.suffixes.each do |suf|
      full_require_paths.each do |dir|
        fullpath = "#{dir}/#{path}#{suf}"
        next unless File.file?(fullpath)
        @paths_map[path] ||= fullpath
      end
    end
    @paths_map[path]
  end
end

# File rubygems/basic_specification.rb, line 308
def to_spec
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 315
def version
  raise NotImplementedError
end

# File rubygems/basic_specification.rb, line 333
def have_extensions?
  !extensions.empty?
end

# File rubygems/basic_specification.rb, line 337
def have_file?(file, suffixes)
  return true if raw_require_paths.any? do |path|
    base = File.join(gems_dir, full_name, path, file)
    suffixes.any? {|suf| File.file? base + suf }
  end

  if have_extensions?
    base = File.join extension_dir, file
    suffixes.any? {|suf| File.file? base + suf }
  else
    false
  end
end