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module Librarian
#
# Represents the output of the resolution process. Captures the declared
# dependencies plus the full set of resolved manifests. The sources are
# already known by the dependencies and by the resolved manifests, so they do
# not need to be captured explicitly.
#
# This representation may be produced by the resolver, may be serialized into
# a lockfile, and may be deserialized from a lockfile. It is expected that the
# lockfile is a direct representation in text of this representation, so that
# the serialization-deserialization process is just the identity function.
#
class Resolution
attr_accessor :dependencies, :manifests, :manifests_index
private :dependencies=, :manifests=, :manifests_index=
def initialize(dependencies, manifests)
self.dependencies = dependencies
self.manifests = manifests
self.manifests_index = build_manifests_index(manifests)
end
def correct?
manifests && manifests_consistent_with_dependencies? && manifests_internally_consistent?
end
def sources
manifests.map(&:source).uniq
end
private
def build_manifests_index(manifests)
Hash[manifests.map{|m| [m.name, m]}] if manifests
end
def manifests_consistent_with_dependencies?
ManifestSet.new(manifests).in_compliance_with?(dependencies)
end
def manifests_internally_consistent?
ManifestSet.new(manifests).consistent?
end
end
end
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