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

Defined in:
lib/trailblazer/activity/dsl/linear.rb

Overview

Sequence Functions to mutate the Sequence by inserting, replacing, or deleting tasks. These functions are called in insert_task

Class Method Summary collapse

Class Method Details

.Append(sequence, new_rows, insert_id) ⇒ Object

Append new_row after insert_id.



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 81

def Append(sequence, new_rows, insert_id)
  index, sequence = find(sequence, insert_id)

  sequence.insert(index+1, *new_rows)
end

.Delete(sequence, _, insert_id) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 101

def Delete(sequence, _, insert_id)
  index, sequence = find(sequence, insert_id)

  sequence.delete(sequence[index])
  sequence
end

.find(sequence, insert_id) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 113

def find(sequence, insert_id)
  index = find_index(sequence, insert_id) or raise Sequence::IndexError.new(insert_id.inspect)

  return index, sequence.clone # Ruby doesn't have an easy way to avoid mutating arrays :(
end

.find_index(sequence, insert_id) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 109

def find_index(sequence, insert_id)
  sequence.find_index { |seq_row| seq_row[3][:id] == insert_id } # TODO: optimize id location!
end

.Prepend(sequence, new_rows, insert_id) ⇒ Object

Insert new_rows before insert_id.



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 88

def Prepend(sequence, new_rows, insert_id)
  index, sequence = find(sequence, insert_id)

  sequence.insert(index, *new_rows)
end

.Replace(sequence, new_rows, insert_id) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear.rb', line 94

def Replace(sequence, new_rows, insert_id)
  index, sequence = find(sequence, insert_id)

  sequence[index], _ = *new_rows # TODO: replace and insert remaining, if any.
  sequence
end