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##
# A ComposedSet allows multiple sets to be queried like a single set.
#
# To create a composed set with any number of sets use:
#
# Gem::Resolver.compose_sets set1, set2
#
# This method will eliminate nesting of composed sets.
class Gem::Resolver::ComposedSet < Gem::Resolver::Set
attr_reader :sets # :nodoc:
##
# Creates a new ComposedSet containing +sets+. Use
# Gem::Resolver::compose_sets instead.
def initialize *sets
super()
@sets = sets
end
##
# When +allow_prerelease+ is set to +true+ prereleases gems are allowed to
# match dependencies.
def prerelease= allow_prerelease
super
sets.each do |set|
set.prerelease = allow_prerelease
end
end
##
# Sets the remote network access for all composed sets.
def remote= remote
super
@sets.each { |set| set.remote = remote }
end
def errors
@errors + @sets.map { |set| set.errors }.flatten
end
##
# Finds all specs matching +req+ in all sets.
def find_all req
@sets.map do |s|
s.find_all req
end.flatten
end
##
# Prefetches +reqs+ in all sets.
def prefetch reqs
@sets.each { |s| s.prefetch(reqs) }
end
end
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