Class: Rudelo::Parsers::SetLogicTransform

Inherits:
SetValueTransform show all
Defined in:
lib/rudelo/parsers/set_logic_transform.rb

Defined Under Namespace

Classes: CardinalityExpr, EmptyExpr, MatchExpr, SetConstructionExpr, SetLogicExpr, SetOp

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(in_set = ::Set.new, &block) ⇒ SetLogicTransform

Returns a new instance of SetLogicTransform.



17
18
19
20
21
 
# File 'lib/rudelo/parsers/set_logic_transform.rb', line 17

def initialize(in_set=::Set.new, &block)
  @in_set = in_set.dup # the dup is vital because we are going to be pointery later
  @set_value = SetValueTransform.new
  super()
end

Instance Attribute Details

#in_set ⇒ Object

Returns the value of attribute in_set.



16
17
18
 
# File 'lib/rudelo/parsers/set_logic_transform.rb', line 16

def in_set
  @in_set
end

#set_value ⇒ Object

Returns the value of attribute set_value.



16
17
18
 
# File 'lib/rudelo/parsers/set_logic_transform.rb', line 16

def set_value
  @set_value
end

Class Method Details

.translate_op(op) ⇒ Object 



89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
 
# File 'lib/rudelo/parsers/set_logic_transform.rb', line 89

def self.translate_op(op)
  case op
  when '#=', 'cardinality-equals',
    'same-as', '=';                      :"=="
  when '#<','cardinality-less-than';     :<
  when '<','proper-subset';              :proper_subset?
  when '#>','cardinality-greater-than';  :>
  when '>', 'proper-superset';           :proper_superset?
  when '<=', 'subset';                   :subset?
  when '>=', 'superset';                 :superset?
  when 'intersection';                   :&
  when 'union';                          :+
  when 'difference';                     :-
  when 'exclusive';                      :'^'
  else
    op.to_sym
  end
end

Instance Method Details

#apply(obj, context = nil) ⇒ Object 



23
24
25
 
# File 'lib/rudelo/parsers/set_logic_transform.rb', line 23

def apply(obj, context=nil)
  super @set_value.apply(obj, context), {in_set: @in_set}
end