Class: Steep::Drivers::Watch

Inherits:
Object
  • Object
show all
Includes:
Utils::DriverHelper
Defined in:
lib/steep/drivers/watch.rb

Instance Attribute Summary collapse

Attributes included from Utils::DriverHelper

#steepfile

Instance Method Summary collapse

Methods included from Utils::DriverHelper

#load_config, #type_check

Constructor Details

#initialize(stdout:, stderr:) ⇒ Watch

Returns a new instance of Watch.



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# File 'lib/steep/drivers/watch.rb', line 11

def initialize(stdout:, stderr:)
  @dirs = []
  @stdout = stdout
  @stderr = stderr
  @queue = Thread::Queue.new
end

Instance Attribute Details

#dirs ⇒ Object (readonly)

Returns the value of attribute dirs.



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# File 'lib/steep/drivers/watch.rb', line 4

def dirs
  @dirs
end

#queue ⇒ Object (readonly)

Returns the value of attribute queue.



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# File 'lib/steep/drivers/watch.rb', line 7

def queue
  @queue
end

#stderr ⇒ Object (readonly)

Returns the value of attribute stderr.



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# File 'lib/steep/drivers/watch.rb', line 6

def stderr
  @stderr
end

#stdout ⇒ Object (readonly)

Returns the value of attribute stdout.



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# File 'lib/steep/drivers/watch.rb', line 5

def stdout
  @stdout
end

Instance Method Details

#listener ⇒ Object 



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# File 'lib/steep/drivers/watch.rb', line 18

def listener
  @listener ||= begin
    Steep.logger.info "Watching #{dirs.join(", ")}..."
    Listen.to(*dirs.map(&:to_s)) do |modified, added, removed|
      Steep.logger.tagged "watch" do
        Steep.logger.info "Received file system updates: modified=[#{modified.join(",")}], added=[#{added.join(",")}], removed=[#{removed.join(",")}]"
      end
      queue << [modified, added, removed]
    end
  end
end

#print_project_result(project) ⇒ Object 



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# File 'lib/steep/drivers/watch.rb', line 77

def print_project_result(project)
  project.targets.each do |target|
    Steep.logger.tagged "target=#{target.name}" do
      case (status = target.status)
      when Project::Target::SignatureSyntaxErrorStatus
        printer = SignatureErrorPrinter.new(stdout: stdout, stderr: stderr)
        printer.print_syntax_errors(status.errors)
      when Project::Target::SignatureValidationErrorStatus
        printer = SignatureErrorPrinter.new(stdout: stdout, stderr: stderr)
        printer.print_semantic_errors(status.errors)
      when Project::Target::TypeCheckStatus
        status.type_check_sources.each do |source_file|
          source_file.errors.each do |error|
            error.print_to stdout
          end
        end
      end
    end
  end
end

#run ⇒ Object 



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# File 'lib/steep/drivers/watch.rb', line 98

def run()
  if dirs.empty?
    stdout.puts "Specify directories to watch"
    return 1
  end

  project = load_config()

  loader = Project::FileLoader.new(project: project)
  loader.load_sources([])
  loader.load_signatures()

  type_check project
  print_project_result project

  listener.start

  stdout.puts "👀 Watching directories, Ctrl-C to stop."
  begin
    type_check_loop project
  rescue Interrupt
    # bye
  end

  0
end

#type_check_loop(project) ⇒ Object 



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# File 'lib/steep/drivers/watch.rb', line 30

def type_check_loop(project)
  until queue.closed?
    stdout.puts "🚥 Waiting for updates..."

    events = []
    events << queue.deq
    until queue.empty?
        events << queue.deq(nonblock: true)
    end

    events.compact.each do |modified, added, removed|
      modified.each do |name|
        path = Pathname(name).relative_path_from(Pathname.pwd)

        project.targets.each do |target|
          target.update_source path, path.read if target.source_file?(path)
          target.update_signature path, path.read if target.signature_file?(path)
        end
      end

      added.each do |name|
        path = Pathname(name).relative_path_from(Pathname.pwd)

        project.targets.each do |target|
          target.add_source path, path.read if target.possible_source_file?(path)
          target.add_signature path, path.read if target.possible_signature_file?(path)
        end
      end

      removed.each do |name|
        path = Pathname(name).relative_path_from(Pathname.pwd)

        project.targets.each do |target|
          target.remove_source path if target.source_file?(path)
          target.remove_signature path if target.signature_file?(path)
        end
      end
    end

    stdout.puts "🔬 Type checking..."
    type_check project
    print_project_result project
  end
rescue ClosedQueueError
  # nop
end