module Bootsnap::CompileCache

def self.permission_error(path)
  cpath = Bootsnap::CompileCache::ISeq.cache_dir
  raise(
    PermissionError,
    "bootsnap doesn't have permission to write cache entries in '#{cpath}' " \
    "(or, less likely, doesn't have permisison to read '#{path}')",
  )
end

def self.setup(cache_dir:, iseq:, yaml:)
  if iseq
    if supported?
      require_relative('compile_cache/iseq')
      Bootsnap::CompileCache::ISeq.install!(cache_dir)
    elsif $VERBOSE
      warn("[bootsnap/setup] bytecode caching is not supported on this implementation of Ruby")
    end
  end
  if yaml
    if supported?
      require_relative('compile_cache/yaml')
      Bootsnap::CompileCache::YAML.install!(cache_dir)
    elsif $VERBOSE
      warn("[bootsnap/setup] YAML parsing caching is not supported on this implementation of Ruby")
    end
  end
end

def self.supported?
  # only enable on 'ruby' (MRI), POSIX (darwin, linux, *bsd), and >= 2.3.0
  RUBY_ENGINE == 'ruby' &&
  RUBY_PLATFORM =~ /darwin|linux|bsd/ &&
  Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.3.0")
end