class Gem::Resolver::GitSet

def add_git_gem(name, repository, reference, submodules) # :nodoc:
  @repositories[name] = [repository, reference]
  @need_submodules[repository] = submodules
end

def add_git_spec(name, version, repository, reference, submodules) # :nodoc:
  add_git_gem name, repository, reference, submodules
  source = Gem::Source::Git.new name, repository, reference
  source.root_dir = @root_dir
  spec = Gem::Specification.new do |s|
    s.name    = name
    s.version = version
  end
  git_spec = Gem::Resolver::GitSpecification.new self, spec, source
  @specs[spec.name] = git_spec
  git_spec
end

def find_all(req)
  prefetch nil
  specs.values.select do |spec|
    req.match? spec
  end
end

def initialize # :nodoc:
  super()
  @git             = ENV['git'] || 'git'
  @need_submodules = {}
  @repositories    = {}
  @root_dir        = Gem.dir
  @specs           = {}
end

def prefetch(reqs)
  return unless @specs.empty?
  @repositories.each do |name, (repository, reference)|
    source = Gem::Source::Git.new name, repository, reference
    source.root_dir = @root_dir
    source.remote = @remote
    source.specs.each do |spec|
      git_spec = Gem::Resolver::GitSpecification.new self, spec, source
      @specs[spec.name] = git_spec
    end
  end
end

def pretty_print(q) # :nodoc:
  q.group 2, '[GitSet', ']' do
    next if @repositories.empty?
    q.breakable
    repos = @repositories.map do |name, (repository, reference)|
      "#{name}: #{repository}@#{reference}"
    end
    q.seplist repos do |repo|
      q.text repo
    end
  end
end