Module: Magicprotorb::RequireHook

Defined in:
lib/magicprotorb/require_hook.rb

Overview

Prepended onto Kernel so that a bare ‘require “magicprotorb/<proto>_pb”` compiles and registers <proto>.proto at require time. This is the Ruby counterpart to magicproto’s sys.meta_path finder.

Only names under “magicprotorb/” that end in “_pb” / “_services_pb” are claimed; everything else (including the native extension and version file) falls through to the real require via super.

Constant Summary collapse

PREFIX = 
"magicprotorb/"
MUTEX = 
Mutex.new

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.dispatch(name) ⇒ Object

Returns true (loaded now), false (already loaded), or nil (not ours).



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# File 'lib/magicprotorb/require_hook.rb', line 22

def self.dispatch(name)
  return nil unless name.is_a?(String) && name.start_with?(PREFIX)

  rest = name[PREFIX.length..]
  if rest.end_with?("_services_pb")
    proto = "#{rest.delete_suffix("_services_pb")}.proto"
    loader = :load_services
  elsif rest.end_with?("_pb")
    proto = "#{rest.delete_suffix("_pb")}.proto"
    loader = :load_messages
  else
    return nil
  end

  MUTEX.synchronize do
    return false if @required[name]

    Loader.public_send(loader, proto)
    @required[name] = true
  end
  true
end

Instance Method Details

#require(name) ⇒ Object 



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# File 'lib/magicprotorb/require_hook.rb', line 16

def require(name)
  handled = RequireHook.dispatch(name)
  handled.nil? ? super : handled
end