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Diffstat (limited to 'lib/rubygems/dependency_resolver/set.rb')
-rw-r--r-- | lib/rubygems/dependency_resolver/set.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/rubygems/dependency_resolver/set.rb b/lib/rubygems/dependency_resolver/set.rb new file mode 100644 index 0000000000..65801871ac --- /dev/null +++ b/lib/rubygems/dependency_resolver/set.rb @@ -0,0 +1,28 @@ +## +# DependencyResolver sets are used to look up specifications (and their +# dependencies) used in resolution. This set is abstract. + +class Gem::DependencyResolver::Set + + ## + # The find_all method must be implemented. It returns all + # DependencyResolver Specification objects matching the given + # DependencyRequest +req+. + + def find_all req + raise NotImplementedError + end + + ## + # The #prefetch method may be overridden, but this is not necessary. This + # default implementation does nothing, which is suitable for sets where + # looking up a specification is cheap (such as installed gems). + # + # When overridden, the #prefetch method should look up specifications + # matching +reqs+. + + def prefetch reqs + end + +end + |