Class: Farseer::Char

Inherits:

Object

• Object
• Farseer::Char

Includes:

MapFactory

Defined in:

lib/farseer/char.rb

Constant Summary

L_PARENS =

new('(')

R_PARENS =

new(')')

PLUS =

new('+')

MINUS =

new('-')

STAR =

new('*')

SLASH =

new('/')

Instance Method Summary

• #initialize(char) ⇒ Char constructor

  A new instance of Char.

• #parse(input) ⇒ Object

Methods included from MapFactory

#map

Constructor Details

#initialize(char) ⇒ Char

Returns a new instance of Char.

# File 'lib/farseer/char.rb', line 7

def initialize(char)
  @char = char
  freeze
end

Instance Method Details

#parse(input) ⇒ Object

# File 'lib/farseer/char.rb', line 19

def parse(input)
  case input[0]
  when @char then Maybe.return(Result.new(input[0], input[1..]))
  else Maybe.none
  end
end