Current File : //opt/alt/ruby33/share/rubygems/rubygems/resolver/specification.rb
# frozen_string_literal: true
##
# A Resolver::Specification contains a subset of the information
# contained in a Gem::Specification. Only the information necessary for
# dependency resolution in the resolver is included.
class Gem::Resolver::Specification
##
# The dependencies of the gem for this specification
attr_reader :dependencies
##
# The name of the gem for this specification
attr_reader :name
##
# The platform this gem works on.
attr_reader :platform
##
# The set this specification came from.
attr_reader :set
##
# The source for this specification
attr_reader :source
##
# The Gem::Specification for this Resolver::Specification.
#
# Implementers, note that #install updates @spec, so be sure to cache the
# Gem::Specification in @spec when overriding.
attr_reader :spec
##
# The version of the gem for this specification.
attr_reader :version
##
# The required_ruby_version constraint for this specification.
attr_reader :required_ruby_version
##
# The required_ruby_version constraint for this specification.
attr_reader :required_rubygems_version
##
# Sets default instance variables for the specification.
def initialize
@dependencies = nil
@name = nil
@platform = nil
@set = nil
@source = nil
@version = nil
@required_ruby_version = Gem::Requirement.default
@required_rubygems_version = Gem::Requirement.default
end
##
# Fetches development dependencies if the source does not provide them by
# default (see APISpecification).
def fetch_development_dependencies # :nodoc:
end
##
# The name and version of the specification.
#
# Unlike Gem::Specification#full_name, the platform is not included.
def full_name
"#{@name}-#{@version}"
end
##
# Installs this specification using the Gem::Installer +options+. The
# install method yields a Gem::Installer instance, which indicates the
# gem will be installed, or +nil+, which indicates the gem is already
# installed.
#
# After installation #spec is updated to point to the just-installed
# specification.
def install(options = {})
require_relative "../installer"
gem = download options
installer = Gem::Installer.at gem, options
yield installer if block_given?
@spec = installer.install
end
def download(options)
dir = options[:install_dir] || Gem.dir
Gem.ensure_gem_subdirectories dir
source.download spec, dir
end
##
# Returns true if this specification is installable on this platform.
def installable_platform?
Gem::Platform.match_spec? spec
end
def local? # :nodoc:
false
end
end