class StateMachine::YARD::Handlers::Transition

Handles and processes transition

Public Instance Methods

process() click to toggle source
# File lib/state_machine/yard/handlers/transition.rb, line 8
def process
  if [StateMachine::Machine, StateMachine::Event, StateMachine::State].include?(owner.class)
    options = {}
    
    # Extract requirements
    ast = statement.parameters.first
    ast.children.each do |assoc|
      # Skip conditionals
      next if %w(if unless).include?(assoc[0].jump(:ident).source)
      
      options[extract_requirement(assoc[0])] = extract_requirement(assoc[1])
    end
    
    owner.transition(options)
  end
end

Private Instance Methods

extract_requirement(ast) click to toggle source

Extracts the statement requirement from the given node

# File lib/state_machine/yard/handlers/transition.rb, line 27
def extract_requirement(ast)
  case ast.type
  when :symbol_literal, :string_literal, :array
    extract_node_names(ast, false)
  when :binary
    AllMatcher.instance - extract_node_names(ast.children.last)
  when :var_ref, :vcall
    case ast.source
    when 'nil'
      nil
    when 'same'
      LoopbackMatcher.instance
    else
      AllMatcher.instance
    end
  end
end