Module: Trailblazer::Developer::Generate

Defined in:
lib/trailblazer/developer/generate.rb

Overview

Computes an Intermediate data structure from a TRB-editor.js file.

Defined Under Namespace

Modules: Representer Classes: Arrow, Element, Pipeline

Class Method Summary collapse

Class Method Details

.call(hash) ⇒ Object 



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# File 'lib/trailblazer/developer/generate.rb', line 34

def call(hash)
  _, (ctx, _) = Activity::TaskWrap.invoke(Pipeline, [{hash: hash}, {}])
  ctx[:intermediate]
end

.compute_intermediate(ctx, elements:, start_events:) ⇒ Object 



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# File 'lib/trailblazer/developer/generate.rb', line 47

def compute_intermediate(ctx, elements:, start_events:, **)
  end_events   = elements.find_all { |el| el.type == "EndEventTerminate" } # DISCUSS: is it really called TERMINATE?

  inter = Activity::Schema::Intermediate

  wiring = elements.collect { |el|
    data = data_for(el)

    [inter.TaskRef(el.id, data), el.linksTo.collect { |arrow| inter.Out(semantic_for(**arrow.to_h), arrow.target) } ] }
  wiring = Hash[wiring]

  # end events need this stupid special handling
  # DISCUSS: currently, the END-SEMANTIC is read from the event's label.
  wiring = wiring.merge(Hash[
    end_events.collect do |_end|
      ref, = wiring.find { |ref, _| ref.id == _end.id }

      [ref, [inter.Out(semantic_for(**_end.to_h)|| raise, nil)]] # TODO: test the raise, happens when the semantic of an End can't be distinguished. # TODO: don't extract semantic from :label but from :data.
    end
  ])
  # pp wiring

  ctx[:intermediate] = inter.new(wiring, end_events.collect(&:id), start_events.collect(&:id))
end

.data_for(element) ⇒ Object

private



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# File 'lib/trailblazer/developer/generate.rb', line 74

def data_for(element)
  {type: element.type}.merge(element.data)
end

.extract_semantic(label) ⇒ Object 



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# File 'lib/trailblazer/developer/generate.rb', line 86

def extract_semantic(label)
  label.to_sym
end

.find_start_events(ctx, elements:) ⇒ Object 



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# File 'lib/trailblazer/developer/generate.rb', line 43

def find_start_events(ctx, elements:, **)
  ctx[:start_events] = elements.find_all { |el| el.type == "Event" }
end

.semantic_for(label: nil) ⇒ Object

We currently use the :label field of an arrow to encode an output semantic. The :symbol_style part will be filtered out as semantic. Defaults to :success.



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# File 'lib/trailblazer/developer/generate.rb', line 80

def semantic_for(label:nil, **)
  return :success unless label

  extract_semantic(label)
end

.transform_from_hash(ctx, hash:, parser: Representer::Activity) ⇒ Object 



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# File 'lib/trailblazer/developer/generate.rb', line 39

def transform_from_hash(ctx, hash:, parser: Representer::Activity, **)
  ctx[:elements] = parser.new(OpenStruct.new).from_hash(hash).elements
end