Class: Roby::StateModel

Inherits:
OpenStructModel show all
Defined in:
lib/roby/state/state_model.rb

Overview

Representation of a level in the state model

Constant Summary

Constants inherited from OpenStruct

OpenStruct::FORBIDDEN_NAMES, OpenStruct::FORBIDDEN_NAMES_RX, OpenStruct::NOT_OVERRIDABLE, OpenStruct::NOT_OVERRIDABLE_RX

Instance Attribute Summary collapse

Attributes inherited from OpenStruct

#__parent_name, #__parent_struct, #model

Instance Method Summary collapse

Methods inherited from OpenStructModel

#__get, #create_subfield, #each_member, #respond_to_missing?

Methods inherited from OpenStruct

#__get, #__merge, #__parent, #__root, #__root?, #_dump, _load, #alias, #alias?, #attach, #attach_child, #attach_model, #attach_to, #attached?, #clear, #clear_model, #create_model, #create_subfield, #delete, #detached!, #each_member, #empty?, #filter, #freeze, #get, #global_filter, #has_method?, #link_to, #member?, #method_missing, #new_model, #on_change, #path, #pretty_print, #respond_to_missing?, #set, #stable!, #stable?, #to_hash, #update, #updated

Constructor Details

#initialize(super_or_obj = nil, attach_to = nil, attach_name = nil) ⇒ StateModel

Returns a new instance of StateModel.



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# File 'lib/roby/state/state_model.rb', line 48

def initialize(super_or_obj = nil, attach_to = nil, attach_name = nil)
    super(super_or_obj, attach_to, attach_name)
    global_filter do |name, value|
        if value.respond_to?(:to_state_variable_model)
            value.to_state_variable_model(self, name)
        else
            raise ArgumentError,
                  "cannot set #{value} on #{name} in a state model. "\
                  "Only allowed values are StateVariableModel, and values "\
                  "that respond to #to_state_variable_model"
        end
    end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Roby::OpenStruct

Instance Attribute Details

#superclass ⇒ Object (readonly)

Returns the superclass, i.e. the state model this is a refinement on



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# File 'lib/roby/state/state_model.rb', line 41

def superclass
  @superclass
end

Instance Method Details

#resolve_data_sources(object, state) ⇒ Object

This methods iterates over the state model, and for each state variable for which a data source model is provided, create the corresponding data source by calling #resolve



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# File 'lib/roby/state/state_model.rb', line 65

def resolve_data_sources(object, state)
    each_member do |name, field|
        if field.respond_to?(:data_source)
            state.data_sources.set(name, field.data_source.resolve(object))
        else
            field.resolve_data_sources(object, state.__get(name, true))
        end
    end
end

#to_s ⇒ Object 



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# File 'lib/roby/state/state_model.rb', line 43

def to_s
    "#<StateModel:#{object_id} path=#{path.join('/')} "\
    "fields=#{@members.keys.sort.join(',')}>"
end