Class: StateMashine
Instance Attribute Summary collapse
-
#object ⇒ Object
Returns the value of attribute object.
Class Method Summary collapse
- .custom_state(state, klass) ⇒ Object
- .custom_state_get ⇒ Object
- .from_actions ⇒ Object
- .from_states ⇒ Object
- .initial_state(state) ⇒ Object
- .initial_state_get ⇒ Object
- .transitions(*args) ⇒ Object
Instance Method Summary collapse
- #==(other) ⇒ Object
- #eql?(other) ⇒ Boolean
- #event(event) ⇒ Object
- #hash ⇒ Object
-
#initialize(object = nil) ⇒ StateMashine
constructor
A new instance of StateMashine.
- #inspect ⇒ Object
- #on_entry(state, method = nil, &b) ⇒ Object
- #on_event(from, event, method = nil, &b) ⇒ Object
- #on_exit(state, method = nil, &b) ⇒ Object
- #state ⇒ Object
- #state=(new_state) ⇒ Object
- #to_s ⇒ Object
Constructor Details
#initialize(object = nil) ⇒ StateMashine
Returns a new instance of StateMashine.
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# File 'lib/RubyExt/StateMashine.rb', line 4 def initialize object = nil; @object = object @on_entry, @on_exit, @on_event = {}, {}, {} @custom_states = {} if self.class.custom_state_get self.class.custom_state_get.each do |state, klass| @custom_states[state] = klass.new end end is = self.class.initial_state_get raise_without_self "Initial State not defined!" unless is fire_action @on_entry[is] @state = is end |
Instance Attribute Details
#object ⇒ Object
Returns the value of attribute object.
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# File 'lib/RubyExt/StateMashine.rb', line 2 def object @object end |
Class Method Details
.custom_state(state, klass) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 151 def custom_state state, klass; @custom_state ||= {} @custom_state[state] = klass end |
.custom_state_get ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 130 def custom_state_get; @custom_state end |
.from_actions ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 127 def from_actions; @from_actions end |
.from_states ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 128 def from_states; @from_states end |
.initial_state(state) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 156 def initial_state state; @initial_state = state end |
.initial_state_get ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 129 def initial_state_get; @initial_state end |
.transitions(*args) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 132 def transitions *args @from_actions, @from_states = {}, {} args.each do |from, action, to| actions = @from_actions[from] unless actions actions = {} @from_actions[from] = actions end actions[action] = to states = @from_states[from] unless states states = {} @from_states[from] = states end states[to] = action end end |
Instance Method Details
#==(other) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 109 def == other return true if equal? other return state == other if other.is_a? Symbol return state == other.state if other.is_a? StateMashine return false end |
#eql?(other) ⇒ Boolean
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# File 'lib/RubyExt/StateMashine.rb', line 120 def eql? other return true if equal? other return state == other.state if other.is_a? StateMashine return false end |
#event(event) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 45 def event event custom_state = @custom_states[state] to = if custom_state begin custom_state.send event rescue NoMethodError raise_without_self "There is no :#{event} Event in :#{state} State!" end else actions = self.class.from_actions[state] raise_without_self "There is no :#{event} Event in :#{state} State!" unless actions actions[event] end raise_without_self "There is no :#{event} Event in :#{state} State!" unless to # p [state, event, to] old_state = state @state = to begin fire_action @on_exit[old_state] fire_action @on_event[old_state + event] fire_action @on_entry[to] rescue Exception => e @state = old_state raise e end end |
#hash ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 116 def hash state.hash end |
#inspect ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 163 def inspect to_s end |
#on_entry(state, method = nil, &b) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 21 def on_entry state, method = nil, &b if method or b @on_entry[state] = method || b else @on_entry.delete state end end |
#on_event(from, event, method = nil, &b) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 29 def on_event from, event, method = nil, &b if method or b @on_event[from + event] = method || b else @on_event.delete from + event end end |
#on_exit(state, method = nil, &b) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 37 def on_exit state, method = nil, &b if method or b @on_exit[state] = method || b else @on_exit.delete state end end |
#state ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 77 def state; @state end |
#state=(new_state) ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 79 def state= new_state custom_state = @custom_states[state] event = if custom_state begin custom_state.state new_state rescue Exception => e raise e end else states = self.class.from_states[state] raise_without_self "There is no way from :#{state} State into :#{new_state} State!" unless states states[new_state] end raise_without_self "There is no way from :#{state} State into :#{new_state} State!" unless event old_state = state @state = new_state begin fire_action @on_exit[old_state] fire_action @on_event[old_state + event] fire_action @on_entry[new_state] rescue Exception => e @state = old_state raise e end end |
#to_s ⇒ Object
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# File 'lib/RubyExt/StateMashine.rb', line 159 def to_s "#<#{self.class.name} state = :#{state}" end |