Class: Symbolic::Variable

Inherits:
Object
  • Object
show all
Includes:
Symbolic
Defined in:
lib/symbolic/variable.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Symbolic

#*, #**, #+, #+@, #-, #-@, #/, #coerce, #operations

Constructor Details

#initialize(options = {}, &proc) ⇒ Variable

Returns a new instance of Variable.



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# File 'lib/symbolic/variable.rb', line 7

def initialize(options={}, &proc)
  @name, @value = options.values_at(:name, :value)
  @name = @name.to_s if @name
  @proc = proc
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/symbolic/variable.rb', line 4

def name
  @name
end

#proc ⇒ Object

Returns the value of attribute proc.



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# File 'lib/symbolic/variable.rb', line 4

def proc
  @proc
end

#value ⇒ Object 



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# File 'lib/symbolic/variable.rb', line 13

def value
  @value || @proc && @proc.call
end

Instance Method Details

#detailed_operations ⇒ Object 



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# File 'lib/symbolic/variable.rb', line 29

def detailed_operations
  Hash.new 0
end

#to_s ⇒ Object 



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# File 'lib/symbolic/variable.rb', line 17

def to_s
  @name || 'unnamed_variable'
end

#undefined_variables ⇒ Object 



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# File 'lib/symbolic/variable.rb', line 25

def undefined_variables
  value ? [] : variables
end

#variables ⇒ Object 



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# File 'lib/symbolic/variable.rb', line 21

def variables
  [self]
end