class Bundler::GemHelpers::PlatformMatch

def self.cpu_match(spec_platform, user_platform)
  if spec_platform.cpu == user_platform.cpu
    0
  elsif spec_platform.cpu == "arm" && user_platform.cpu.to_s.start_with?("arm")
    0
  elsif spec_platform.cpu.nil? || spec_platform.cpu == "universal"
    1
  else
    2
  end
end

def self.os_match(spec_platform, user_platform)
  if spec_platform.os == user_platform.os
    0
  else
    1
  end
end

def self.platform_version_match(spec_platform, user_platform)
  if spec_platform.version == user_platform.version
    0
  elsif spec_platform.version.nil?
    1
  else
    2
  end
end

def <=>(other)
  return nil unless other.is_a?(PlatformMatch)
  m = os_match <=> other.os_match
  return m unless m.zero?
  m = cpu_match <=> other.cpu_match
  return m unless m.zero?
  m = platform_version_match <=> other.platform_version_match
  m
end