Class: OpalWebpackCompileServer::Compiler

Inherits:
EventMachine::Connection
  • Object
show all
Defined in:
lib/opal-webpack-loader/compile_server.rb

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Compiler

Returns a new instance of Compiler.



23
24
25
26
 
# File 'lib/opal-webpack-loader/compile_server.rb', line 23

def initialize(*args)
  @received_data = ''
  super(*args)
end

Instance Method Details

#receive_data(data) ⇒ Object 



28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/opal-webpack-loader/compile_server.rb', line 28

def receive_data(data)
  @received_data << data

  return unless @received_data.end_with?("}\x04")

  if @received_data.start_with?('command:stop')
    EventMachine.stop
    exit(0)
  end

  request_json = Oj.load(@received_data.chop!, {})

  @received_data = ''

  compile_source_map = request_json["source_map"]
  filename = request_json["filename"]
  source = request_json["source"]

  operation = proc do
    begin
      c = Opal::Compiler.new(source, file: filename, es6_modules: true)
      c.compile
      result = { 'javascript' => c.result }
      if compile_source_map
        result['source_map'] = c.source_map.as_json
        result['source_map']['sourcesContent'] = [source]
        result['source_map']['file'] = filename
        result['source_map']['names'] = result['source_map']['names'].map(&:to_s)
      end
      result['required_trees'] = c.required_trees
      Oj.dump(result, {})
    rescue Exception => e
      Oj.dump({ 'error' => { 'name' => e.class, 'message' => e.message, 'backtrace' => e.backtrace.join("\n") } }, {})
    end
  end

  callback = proc do |json|
    self.send_data(json)
    close_connection_after_writing
  end

  EM.defer(operation, callback)
end