1 files changed, 61 insertions, 0 deletions
diff --git a/lib/bundler/vendor/pub_grub/lib/pub_grub/static_package_source.rb b/lib/bundler/vendor/pub_grub/lib/pub_grub/static_package_source.rb
new file mode 100644
index 0000000000..36ab06254d
--- /dev/null
+++ b/lib/bundler/vendor/pub_grub/lib/pub_grub/static_package_source.rb
@@ -0,0 +1,61 @@
+require_relative 'package'
+require_relative 'rubygems'
+require_relative 'version_constraint'
+require_relative 'incompatibility'
+require_relative 'basic_package_source'
+
+module Bundler::PubGrub
+  class StaticPackageSource < BasicPackageSource
+    class DSL
+      def initialize(packages, root_deps)
+        @packages = packages
+        @root_deps = root_deps
+      end
+
+      def root(deps:)
+        @root_deps.update(deps)
+      end
+
+      def add(name, version, deps: {})
+        version = Gem::Version.new(version)
+        @packages[name] ||= {}
+        raise ArgumentError, "#{name} #{version} declared twice" if @packages[name].key?(version)
+        @packages[name][version] = clean_deps(name, version, deps)
+      end
+
+      private
+
+      # Exclude redundant self-referencing dependencies
+      def clean_deps(name, version, deps)
+        deps.reject {|dep_name, req| name == dep_name && Bundler::PubGrub::RubyGems.parse_range(req).include?(version) }
+      end
+    end
+
+    def initialize
+      @root_deps = {}
+      @packages = {}
+
+      yield DSL.new(@packages, @root_deps)
+
+      super()
+    end
+
+    def all_versions_for(package)
+      @packages[package].keys
+    end
+
+    def root_dependencies
+      @root_deps
+    end
+
+    def dependencies_for(package, version)
+      @packages[package][version]
+    end
+
+    def parse_dependency(package, dependency)
+      return false unless @packages.key?(package)
+
+      Bundler::PubGrub::RubyGems.parse_constraint(package, dependency)
+    end
+  end
+end