Module: LanguageServer

Defined in:
lib/language_server.rb,
lib/language_server/logger.rb,
lib/language_server/project.rb,
lib/language_server/version.rb,
lib/language_server/file_store.rb,
lib/language_server/project/node.rb,
lib/language_server/linter/ruby_wc.rb,
lib/language_server/project/parser.rb,
lib/language_server/completion_provider/ad_hoc.rb,
lib/language_server/definition_provider/ad_hoc.rb,
lib/language_server/completion_provider/rcodetools.rb

Defined Under Namespace

Modules: CompletionProvider, DefinitionProvider, Linter Classes: FileStore, Formatter, Project

Constant Summary collapse

VERSION = 
"0.7.0"

Class Method Summary collapse

Class Method Details

.logger ⇒ Object 



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# File 'lib/language_server/logger.rb', line 5

def logger
  @logger ||= ::Logger.new(STDERR, formatter: Formatter.new)
end

.on(method, &callback) ⇒ Object 



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# File 'lib/language_server.rb', line 64

def on(method, &callback)
  subscribers[method] = callback
end

.run ⇒ Object 



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# File 'lib/language_server.rb', line 15

def run
  writer = Protocol::Transport::Stdio::Writer.new
  reader = Protocol::Transport::Stdio::Reader.new
  variables = {}

  class << writer
    def respond(id:, result:)
      write(id: id, result: result)

      LanguageServer.logger.debug("Respond: id: #{id}, result: #{JSON.pretty_generate(result)}")
    end

    def notify(method:, params: {})
      write(method: method, params: params)

      LanguageServer.logger.debug("Notify: method: #{method}, params: #{JSON.pretty_generate(params)}")
    end
  end

  reader.read do |request|
    logger.debug("Receive: #{JSON.pretty_generate(request)}")

    method = request[:method].to_sym

    _, subscriber = subscribers.find {|k, _|
      k === method
    }

    if subscriber
      keys = subscriber.parameters.map(&:last)
      result = subscriber.call(
        {
          request: request, notifier: writer.method(:notify), variables: variables
        }.merge(variables).select {|k, _| keys.include?(k) }
      )

      if request[:id]
        writer.respond(id: request[:id], result: result)
      end
    else
      logger.debug("Ignore: #{method}")
    end
  end
end

.subscribers ⇒ Object 



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# File 'lib/language_server.rb', line 60

def subscribers
  @subscribers ||= {}
end