Class: Graphomaton::Exporters::Plantuml

Inherits:
Object
  • Object
show all
Includes:
Graphomaton::ExporterIntrospection
Defined in:
lib/graphomaton/exporters/plantuml.rb

Constant Summary collapse

DEFAULT_DIRECTION = 
:lr
DEFAULT_NOTES = 
false
DIRECTION_OPTIONS = 
%i[lr tb rl bt].freeze
PSEUDOSTATE_TYPES = 
%i[choice fork join].freeze
RESERVED_IDENTIFIERS = 
%w[state note skinparam hide left right top bottom direction as of].freeze

Instance Method Summary collapse

Methods included from Graphomaton::ExporterIntrospection

#capabilities, #losses_for

Constructor Details

#initialize(automaton, direction: DEFAULT_DIRECTION, theme: nil, notes: DEFAULT_NOTES) ⇒ Plantuml

Returns a new instance of Plantuml.



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# File 'lib/graphomaton/exporters/plantuml.rb', line 13

def initialize(automaton, direction: DEFAULT_DIRECTION, theme: nil, notes: DEFAULT_NOTES)
  @automaton = automaton
  @direction = resolve_direction(direction)
  @theme = resolve_theme(theme)
  @notes = notes
  @identifiers = IdentifierAllocator.new(reserved: RESERVED_IDENTIFIERS)
  @state_names = allocate_state_names
  @hierarchy_usable = @automaton.validation_diagnostics.none? do |diagnostic|
    diagnostic.code == 'invalid-state-hierarchy'
  end
end

Instance Method Details

#export ⇒ Object 



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# File 'lib/graphomaton/exporters/plantuml.rb', line 25

def export
  lines = ['@startuml']
  lines << 'hide empty description'

  lines << direction_keyword
  lines.concat(theme_lines) if @theme
  lines.concat(state_alias_lines)
  lines.concat(pseudostate_lines)
  lines.concat(composite_state_lines)
  lines.concat(state_group_lines)
  lines << ''

  if @automaton.initial_state
    lines << "[*] --> #{state_name(@automaton.initial_state)}"
  end

  @automaton.transition_records.each do |trans|
    from = state_name(trans[:from])
    to = state_name(trans[:to])
    label = escape_label(trans[:label])
    lines << "#{from} --> #{to} : #{label}"
  end

  @automaton.final_states.each do |state|
    lines << "#{state_name(state)} --> [*]"
  end

  lines.concat(state_note_lines) if @notes

  lines << ''
  lines << '@enduml'
  "#{lines.join("\n")}\n"
end