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authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/rubygems/resolver/specification.rb
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+##
+# 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
+
+ ##
+ # Sets default instance variables for the specification.
+
+ def initialize
+ @dependencies = nil
+ @name = nil
+ @platform = nil
+ @set = nil
+ @source = nil
+ @version = nil
+ 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 'rubygems/installer'
+
+ destination = options[:install_dir] || Gem.dir
+
+ Gem.ensure_gem_subdirectories destination
+
+ gem = source.download spec, destination
+
+ installer = Gem::Installer.new gem, options
+
+ yield installer if block_given?
+
+ @spec = installer.install
+ end
+
+ ##
+ # Returns true if this specification is installable on this platform.
+
+ def installable_platform?
+ Gem::Platform.match spec.platform
+ end
+
+ def local? # :nodoc:
+ false
+ end
+end
+