Class: RPNCalculator::Result::Parser

Inherits:

Object

• Object
• RPNCalculator::Result::Parser

Defined in:

lib/rpn-calculator/result/parser.rb

Instance Attribute Summary

• #invalid_elements ⇒ Object readonly

  Returns the value of attribute invalid_elements.

• #parsed_elements ⇒ Object readonly

  Returns the value of attribute parsed_elements.

Instance Method Summary

• #error ⇒ Object
• #initialize(parsed_elements = [], invalid_elements = []) ⇒ Parser constructor

  A new instance of Parser.

• #valid? ⇒ Boolean

Constructor Details

#initialize(parsed_elements = [], invalid_elements = []) ⇒ Parser

Returns a new instance of Parser.

# File 'lib/rpn-calculator/result/parser.rb', line 4

def initialize(parsed_elements = [], invalid_elements = [])
  @parsed_elements  = parsed_elements
  @invalid_elements = invalid_elements
end

Instance Attribute Details

#invalid_elements ⇒ Object (readonly)

Returns the value of attribute invalid_elements.

# File 'lib/rpn-calculator/result/parser.rb', line 17

def invalid_elements
  @invalid_elements
end

#parsed_elements ⇒ Object (readonly)

Returns the value of attribute parsed_elements.

# File 'lib/rpn-calculator/result/parser.rb', line 17

def parsed_elements
  @parsed_elements
end

Instance Method Details

#error ⇒ Object

# File 'lib/rpn-calculator/result/parser.rb', line 13

def error
  "Invalid operators or numbers: #{invalid_element_list}" unless valid?
end

#valid? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/rpn-calculator/result/parser.rb', line 9

def valid?
  invalid_elements.empty?
end