Module: Trailblazer::Activity::DSL::Linear

Defined in:
lib/trailblazer/activity/dsl/linear.rb,
lib/trailblazer/activity/dsl/linear/state.rb,
lib/trailblazer/activity/dsl/linear/helper.rb,
lib/trailblazer/activity/dsl/linear/compiler.rb,
lib/trailblazer/activity/dsl/linear/strategy.rb,
lib/trailblazer/activity/dsl/linear/normalizer.rb,
lib/trailblazer/activity/dsl/linear/variable_mapping.rb

Overview

TODO: rename!

Defined Under Namespace

Modules: Compiler, DSL, Insert, Normalizer, Patch, Search, Strategy, VariableMapping Classes: Extension, Id, OutputSemantic, Sequence, State, Track

Class Method Summary collapse

Class Method Details

.End(semantic) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 25

def End(semantic)
  Activity.End(semantic)
end

.end_id(_end) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 29

def end_id(_end)
  "End.#{_end.to_h[:semantic]}" # TODO: use everywhere
end

.Id(id) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 37

def Id(id)
  Id.new(id).freeze
end

.Merge(old_seq, new_seq, end_id: "End.success") ⇒ Object

DISCUSS: also Insert



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 120

def Merge(old_seq, new_seq, end_id: "End.success") # DISCUSS: also Insert
  new_seq = strip_start_and_ends(new_seq, end_id: end_id)

  seq = Insert.Prepend(old_seq, new_seq, end_id)
end

.normalize(options, local_keys) ⇒ Object

TODO: test me.



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 118

def normalize(options, local_keys) # TODO: test me.
  locals  = options.reject { |key, value| ! local_keys.include?(key) }
  foreign = options.reject { |key, value| local_keys.include?(key) }
  return foreign, locals
end

.Output(signal, semantic = nil) ⇒ Object

Output( Left, :failure )

Output( :failure ) #=> Output::Semantic



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 19

def Output(signal, semantic=nil)
  return OutputSemantic.new(signal) if semantic.nil?

  Activity.Output(signal, semantic)
end

.Path(track_color: "track_#{rand}", end_id: "path_end_#{rand}", connect_to: nil, **options, &block) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 41

def Path(track_color: "track_#{rand}", end_id:"path_end_#{rand}", connect_to:nil, **options, &block)
  # DISCUSS: here, we use the global normalizer and don't allow injection.
  state = Activity::Path::DSL::State.new(Activity::Path::DSL.OptionsForState(track_name: track_color, end_id: end_id, **options)) # TODO: test injecting {:normalizers}.

  # seq = block.call(state) # state changes.
  state.instance_exec(&block)

  seq = state.to_h[:sequence]

  _end_id =
    if connect_to
      end_id
    else
      nil
    end

  seq = strip_start_and_ends(seq, end_id: _end_id) # don't cut off end unless {:connect_to} is set.

  if connect_to
    output, _ = seq[-1][2][0].(seq, seq[-1]) # FIXME: the Forward() proc contains the row's Output, and the only current way to retrieve it is calling the search strategy. It should be Forward#to_h

    searches = [Search.ById(output, connect_to.value)]

    row = seq[-1]
    row = row[0..1] + [searches] + [row[3]] # FIXME: not mutating an array is so hard: we only want to replace the "searches" element, index 2

    seq = seq[0..-2] + [row]
  end

  # Add the path before End.success - not sure this is bullet-proof.
  adds = seq.collect do |row|
    {
      row:    row,
      insert: [Insert.method(:Prepend), "End.success"]
    }
  end

  # Connect the Output() => Track(path_track)
  return Track.new(track_color, adds)
end

.strip_start_and_ends(seq, end_id:) ⇒ Object

TODO: introduce Merge namespace?



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 125

def strip_start_and_ends(seq, end_id:) # TODO: introduce Merge namespace?
  cut_off_index = end_id.nil? ? seq.size : Insert.find_index(seq, end_id) # find the "first" end.

  seq[1..cut_off_index-1]
end

.Subprocess(activity, patch: {}) ⇒ Object

Computes the :outputs options for activity.



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 83

def Subprocess(activity, patch: {})
  patch.each do |path, patch|
    activity = Patch.(activity, path, patch) # TODO: test if multiple patches works!
  end

  {
    task:    activity,
    outputs: Hash[activity.to_h[:outputs].collect { |output| [output.semantic, output] }]
  }
end

.Track(color) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear/helper.rb', line 33

def Track(color)
  Track.new(color, []).freeze
end

.VariableMapping(input: VariableMapping.default_input, output: VariableMapping.default_output) ⇒ Object

Normalizer-steps to implement :input and :output Returns an Extension instance to be thrown into the ‘step` DSL arguments.



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# File 'lib/trailblazer/activity/dsl/linear/variable_mapping.rb', line 7

def self.VariableMapping(input:  VariableMapping.default_input, output: VariableMapping.default_output)
  input =
    VariableMapping::Input::Scoped.new(
      Trailblazer::Option::KW( VariableMapping::filter_for(input) )
    )

  output =
    VariableMapping::Output::Unscoped.new(
      Trailblazer::Option::KW( VariableMapping::filter_for(output) )
    )

  TaskWrap::Extension(
    merge: TaskWrap::VariableMapping.merge_for(input, output, id: input.object_id), # wraps filters: {Input(input), Output(output)}
  )
end