enum TokenType
  CLOSE_BRACE,
  CLOSE_BRACKET,
  CLOSE_PARENTHESE,
  COLON,
  COMMA,
  DEF,
  DO,
  END,
  ENUM,
  EQUALS,
  IDENTIFIER,
  IF,
  OPEN_BRACE,
  OPEN_BRACKET,
  OPEN_PARENTHESE,
  PERIOD,
  STRING_LITERAL,
  WITH,
end

struct Token
  TokenType tokenType
  string lexeme
end

def scan(source)
  SINGLE_CHARACTER_TOKENS = {
    '}': TokenType.CLOSE_BRACE,
    ']': TokenType.CLOSE_BRACKET,
    ')': TokenType.CLOSE_PARENTHESE,
    ':': TokenType.COLON,
    ',': TokenType.COMMA,
    '{': TokenType.OPEN_BRACE,
    '[': TokenType.OPEN_BRACKET,
    '(': TokenType.OPEN_PARENTHESE,
    '.': TokenType.PERIOD,
  }

  def match(source)
    if source[0] in SINGLE_CHARACTER_TOKENS
      Token {
        tokenType: SINGLE_CHARACTER_TOKENS[source[0]],
        lexeme: source[0]
      }
    else
    end
  end
end

def parse(tokens)
end

def generate(ast)
end

def compile(source)
  tokens = scan(source)
  ast = parse(tokens)
  generate(ast)
end

source_file_path = __arguments__[0]
destination_file_path = __argument__[1]

with open(source_file_path, 'r') as source_file
  source = source_file.read()
end

c = compile(source)

with open(destination_file_path, 'w') as destination_file do
  destination_file.write(c)
end