Class: Calculator::Token

Inherits:
Object
  • Object
show all
Defined in:
lib/linmeric/Calculator.rb

Overview

Definition of a simple token with an attribute (@tag) and a value (@val)

Author

Massimiliano Dal Mas ([email protected])

License

Distributed under MIT license

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ Token

  • argument: value to tokenize (String)



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# File 'lib/linmeric/Calculator.rb', line 25

def initialize(value)
  @val = value
  if OP.include? value then
    @tag = :OPERATOR
  elsif value.number? then
    @tag = :NUMBER
    @val = value.to_n
  elsif value == "(" then
    @tag = :L_PAR
  elsif value == ")" then
    @tag = :R_PAR
  end
end

Instance Method Details

#tag ⇒ Object

  • returns: tag of the token



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# File 'lib/linmeric/Calculator.rb', line 45

def tag
  return @tag
end

#value ⇒ Object

  • returns: value of the token



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# File 'lib/linmeric/Calculator.rb', line 40

def value
  return @val
end