module Bundler::MatchPlatform

def self.generic_local_platform_is_ruby?
  Bundler.generic_local_platform == Gem::Platform::RUBY
end

def self.select_all_platform_match(specs, platform, force_ruby: false, prefer_locked: false)
  matching = specs.select {|spec| spec.installable_on_platform?(force_ruby ? Gem::Platform::RUBY : platform) }
  specs.each(&:force_ruby_platform!) if force_ruby
  if prefer_locked
    locked_originally = matching.select {|spec| spec.is_a?(::Bundler::LazySpecification) }
    return locked_originally if locked_originally.any?
  end
  matching
end

def self.select_best_local_platform_match(specs, force_ruby: false)
  local = Bundler.local_platform
  matching = select_all_platform_match(specs, local, force_ruby: force_ruby).filter_map(&:materialized_for_installation)
  Gem::Platform.sort_best_platform_match(matching, local)
end

def self.select_best_platform_match(specs, platform, force_ruby: false, prefer_locked: false)
  matching = select_all_platform_match(specs, platform, force_ruby: force_ruby, prefer_locked: prefer_locked)
  Gem::Platform.sort_and_filter_best_platform_match(matching, platform)
end

def installable_on_platform?(target_platform) # :nodoc:
  return true if [Gem::Platform::RUBY, nil, target_platform].include?(platform)
  return true if Gem::Platform.new(platform) === target_platform
  false
end