Class: Statecraft::Machine::Compiler

Inherits:
Object
  • Object
show all
Defined in:
lib/statecraft/machine.rb

Overview

Validates the declarations and produces the deep-frozen graph. All five compilation errors live here, plus symbol resolution: every Symbol guard or callback must exist as an instance method of the machine class at finalization time (never checked at the declaration line, so a guard may be declared above its def).

Instance Method Summary collapse

Constructor Details

#initialize(machine_class) ⇒ Compiler

Returns a new instance of Compiler.



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# File 'lib/statecraft/machine.rb', line 204

def initialize(machine_class)
  @machine_class = machine_class
end

Instance Method Details

#compile ⇒ Object 



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# File 'lib/statecraft/machine.rb', line 208

def compile
  states = compile_states
  initial = compile_initial(states)
  edges = compile_edges(states)
  events = compile_events(edges)
  resolve_symbols(edges)
  assert_record_guards_unary(edges)
  assert_input_guards_binary(edges)
  assert_states_reachable(states, initial, edges) if machine_class.strict?
  CompiledGraph.new(
    states: states.freeze,
    initial_state: initial,
    edges: deep_freeze_edges(edges),
    events: freeze_events(events),
    callbacks: freeze_callbacks
  ).freeze
end