Class: Neovim::Messager

Inherits:
Object show all
Includes:
Logging
Defined in:
lib/neovim/messager.rb

Defined Under Namespace

Classes: Disconnected, Message, ResponseError

Constant Summary

Constants included from Logging

Logging::DEFAULT_LEVEL, Logging::LEVELS

Instance Method Summary collapse

Methods included from Logging

put

Constructor Details

#initialize(conn, session) ⇒ Messager

Returns a new instance of Messager.



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# File 'lib/neovim/messager.rb', line 107

def initialize conn, session
  @conn, @session = conn, session
  @request_id = 0
  @responses = {}
end

Instance Method Details

#notify(method, *args) ⇒ Object 



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# File 'lib/neovim/messager.rb', line 158

def notify method, *args
  put Message::Notification[ method, args]
end

#request(method, *args) ⇒ Object 



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# File 'lib/neovim/messager.rb', line 144

def request method, *args
  @request_id += 1
  put Message::Request[ @request_id, method, args]
  @responses[ @request_id] = nil
  run @request_id
  r = @responses.delete @request_id
  if r.error then
    t, e = *r.error
    t = @conn.error t
    raise ResponseError, "#{t}: #{e}"
  end
  r.value
end

#run(until_id = nil) ⇒ Object 



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# File 'lib/neovim/messager.rb', line 113

def run until_id = nil
  loop do
    message = get
    case message
    when Message::Response then
      if @responses.key? message.request_id then
        @responses[ message.request_id] = message
      else
        log :warning, "Dropped response", message.request_id
      end
    when Message::Request then
      begin
        r = @session.execute_handler message.method_name, message.arguments
        log :debug1, "Request result", result: r
      rescue
        e = [ 0, $!.to_s]
        log_exception :error
      end
      rsp = Message::Response.new message.request_id, e, r
      put rsp
    when Message::Notification then
      begin
        @session.execute_handler message.method_name, message.arguments
      rescue
        log_exception :error
      end
    end
    break if until_id and @responses[ until_id]
  end
end