class Gem::Resolver::Specification
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.
Attributes
The dependencies of the gem for this specification
The name of the gem for this specification
The platform this gem works on.
The required_ruby_version
constraint for this specification.
The required_ruby_version
constraint for this specification.
The set this specification came from.
The source for this specification
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.
The version of the gem for this specification.
Public Class Methods
Sets default instance variables for the specification.
# File lib/rubygems/resolver/specification.rb, line 60 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
Public Instance Methods
# File lib/rubygems/resolver/specification.rb, line 108 def download(options) dir = options[:install_dir] || Gem.dir Gem.ensure_gem_subdirectories dir source.download spec, dir end
The name and version of the specification.
Unlike Gem::Specification#full_name
, the platform is not included.
# File lib/rubygems/resolver/specification.rb, line 83 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.
# File lib/rubygems/resolver/specification.rb, line 96 def install(options = {}) require_relative "../installer" gem = download options installer = Gem::Installer.at gem, options yield installer if block_given? @spec = installer.install end
Returns true if this specification is installable on this platform.
# File lib/rubygems/resolver/specification.rb, line 119 def installable_platform? Gem::Platform.match_spec? spec end