Class: Gloo::Objs::Boolean

Inherits:
Core::Obj show all
Defined in:
lib/gloo/objs/basic/boolean.rb

Constant Summary collapse

KEYWORD = 
'boolean'.freeze
KEYWORD_SHORT = 
'bool'.freeze
TRUE = 
'true'.freeze
FALSE = 
'false'.freeze

Constants inherited from Core::Baseo

Core::Baseo::NOT_IMPLEMENTED_ERR

Instance Attribute Summary

Attributes inherited from Core::Obj

#children, #parent, #value

Attributes inherited from Core::Baseo

#name

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Core::Obj

#add_child, #add_children_on_create?, #add_default_children, can_create?, #can_receive_message?, #child_count, #contains_child?, #delete_children, #dispatch, #display_value, #find_add_child, #find_child, help, inherited, #initialize, #msg_reload, #msg_unload, #multiline_value?, #pn, #remove_child, #root?, #send_message, #set_parent, #type_display, #value_is_array?, #value_is_blank?, #value_string?

Methods inherited from Core::Baseo

#initialize, #type_display

Constructor Details

This class inherits a constructor from Gloo::Core::Obj

Class Method Details

.boolean?(token) ⇒ Boolean

Is the given token a boolean?

Returns:



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# File 'lib/gloo/objs/basic/boolean.rb', line 61

def self.boolean?( token )
  return true if token == true
  return true if token == false

  if token.class.name == 'String'
    return true if token.strip.downcase == TRUE
    return true if token.strip.downcase == FALSE
  end
  return false
end

.coerse_to_bool(new_value) ⇒ Object

Coerse the new value to a boolean value.



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# File 'lib/gloo/objs/basic/boolean.rb', line 40

def self.coerse_to_bool( new_value )
  return false if new_value.nil?

  # I should be able to use this:
  # if new_value.kind_of?( String )
  # but it doesn't work.  I don't know why.
  if new_value.class.name == 'String'
    return true if new_value.strip.downcase == TRUE
    return false if new_value.strip.downcase == FALSE
    return true if new_value.strip.downcase == 't'
    return false if new_value.strip.downcase == 'f'
  elsif new_value.class.name == 'Integer'
    return new_value.zero? ? false : true
  end

  return new_value == true
end

.messages ⇒ Object

Get a list of message names that this object receives.



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# File 'lib/gloo/objs/basic/boolean.rb', line 86

def self.messages
  return super + %w[not true false]
end

.short_typename ⇒ Object

The short name of the object type.



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# File 'lib/gloo/objs/basic/boolean.rb', line 26

def self.short_typename
  return KEYWORD_SHORT
end

.typename ⇒ Object

The name of the object type.



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# File 'lib/gloo/objs/basic/boolean.rb', line 19

def self.typename
  return KEYWORD
end

Instance Method Details

#msg_false ⇒ Object

Set the value to false.



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# File 'lib/gloo/objs/basic/boolean.rb', line 112

def msg_false
  set_value false
  @engine.heap.it.set_to false
  return false
end

#msg_not ⇒ Object

Set the value to the opposite of what it is.



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# File 'lib/gloo/objs/basic/boolean.rb', line 93

def msg_not
  v = !value
  set_value v
  @engine.heap.it.set_to v
  return v
end

#msg_true ⇒ Object

Set the value to true.



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# File 'lib/gloo/objs/basic/boolean.rb', line 103

def msg_true
  set_value true
  @engine.heap.it.set_to true
  return true
end

#set_value(new_value) ⇒ Object

Set the value with any necessary type conversions.



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# File 'lib/gloo/objs/basic/boolean.rb', line 33

def set_value( new_value )
  self.value = Gloo::Objs::Boolean.coerse_to_bool( new_value )
end

#value_display ⇒ Object

Get the value for display purposes.



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# File 'lib/gloo/objs/basic/boolean.rb', line 75

def value_display
  return value ? TRUE : FALSE
end