class Gem::DependencyResolver::APISet

def find_all(req)
  res = []
  versions(req.name).each do |ver|
    if req.dependency.match? req.name, ver[:number]
      res << APISpecification.new(self, ver)
    end
  end
  res
end

def initialize
  @data = Hash.new { |h,k| h[k] = [] }
end

def prefetch(reqs)
  names = reqs.map { |r| r.dependency.name }
  needed = names.find_all { |d| !@data.key?(d) }
  return if needed.empty?
  u = URI.parse "http://rubygems.org/api/v1/dependencies?gems=#{needed.join ','}"
  str = Net::HTTP.get(u)
  Marshal.load(str).each do |ver|
    @data[ver[:name]] << ver
  end
end

def versions(name)
  if @data.key?(name)
    return @data[name]
  end
  u = URI.parse "http://rubygems.org/api/v1/dependencies?gems=#{name}"
  str = Net::HTTP.get(u)
  Marshal.load(str).each do |ver|
    @data[ver[:name]] << ver
  end
  @data[name]
end