1 files changed, 85 insertions, 0 deletions
diff --git a/jni/ruby/lib/rubygems/resolver/api_specification.rb b/jni/ruby/lib/rubygems/resolver/api_specification.rb
new file mode 100644
index 0000000..4960e66
--- /dev/null
+++ b/jni/ruby/lib/rubygems/resolver/api_specification.rb
@@ -0,0 +1,85 @@
+##
+# Represents a specification retrieved via the rubygems.org API.
+#
+# This is used to avoid loading the full Specification object when all we need
+# is the name, version, and dependencies.
+
+class Gem::Resolver::APISpecification < Gem::Resolver::Specification
+
+  ##
+  # Creates an APISpecification for the given +set+ from the rubygems.org
+  # +api_data+.
+  #
+  # See http://guides.rubygems.org/rubygems-org-api/#misc_methods for the
+  # format of the +api_data+.
+
+  def initialize(set, api_data)
+    super()
+
+    @set = set
+    @name = api_data[:name]
+    @version = Gem::Version.new api_data[:number]
+    @platform = Gem::Platform.new api_data[:platform]
+    @dependencies = api_data[:dependencies].map do |name, ver|
+      Gem::Dependency.new name, ver.split(/\s*,\s*/)
+    end
+  end
+
+  def == other # :nodoc:
+    self.class === other and
+      @set          == other.set and
+      @name         == other.name and
+      @version      == other.version and
+      @platform     == other.platform and
+      @dependencies == other.dependencies
+  end
+
+  def fetch_development_dependencies # :nodoc:
+    spec = source.fetch_spec Gem::NameTuple.new @name, @version, @platform
+
+    @dependencies = spec.dependencies
+  end
+
+  def installable_platform? # :nodoc:
+    Gem::Platform.match @platform
+  end
+
+  def pretty_print q # :nodoc:
+    q.group 2, '[APISpecification', ']' do
+      q.breakable
+      q.text "name: #{name}"
+
+      q.breakable
+      q.text "version: #{version}"
+
+      q.breakable
+      q.text "platform: #{platform}"
+
+      q.breakable
+      q.text 'dependencies:'
+      q.breakable
+      q.pp @dependencies
+
+      q.breakable
+      q.text "set uri: #{@set.dep_uri}"
+    end
+  end
+
+  ##
+  # Fetches a Gem::Specification for this APISpecification.
+
+  def spec # :nodoc:
+    @spec ||=
+      begin
+        tuple = Gem::NameTuple.new @name, @version, @platform
+
+        source.fetch_spec tuple
+      end
+  end
+
+  def source # :nodoc:
+    @set.source
+  end
+
+end
+