Method: Cyc::Client#check_parenthesis

Defined in:
lib/cyc/client.rb

#check_parenthesis(message) ⇒ Object

Scans the message to find out if the parenthesis are matched. Raises UnbalancedClosingParenthesis exception if there is a not matched closing parenthesis. The message of the exception contains the string with the unmatched parenthesis highlighted. Raises UnbalancedOpeningParenthesis exception if there is a not matched opening parenthesis.

Raises:



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# File 'lib/cyc/client.rb', line 182

def check_parenthesis(message)
  count = 0
  message.scan(/[()]/) do |char|
    count += (char == "(" ?  1 : -1)
    if count < 0
      # this *is* thread safe
      position = $~.offset(0)[0]
      raise UnbalancedClosingParenthesis.
        new((position > 1 ? message[0...position] : "") +
          "<error>)</error>" + message[position+1..-1])
    end
  end
  raise UnbalancedOpeningParenthesis.new(count) if count > 0
end