Class: BotFramework::Dialogs::RegExpRecognizer

Inherits:
Object
  • Object
show all
Defined in:
lib/bot_framework/dialogs/reg_exp_recognizer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(intent, expressions) ⇒ RegExpRecognizer

Returns a new instance of RegExpRecognizer.



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# File 'lib/bot_framework/dialogs/reg_exp_recognizer.rb', line 6

def initialize(intent,expressions)
  @intent = intent
  if expressions.is_a? Regexp
    @expressions = {'*': expressions}
  else
    @expressions = expressions || {}
  end
end

Instance Attribute Details

#expressions ⇒ Object

Returns the value of attribute expressions.



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# File 'lib/bot_framework/dialogs/reg_exp_recognizer.rb', line 5

def expressions
  @expressions
end

#intent ⇒ Object

Returns the value of attribute intent.



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# File 'lib/bot_framework/dialogs/reg_exp_recognizer.rb', line 5

def intent
  @intent
end

Instance Method Details

#recognize(context) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/bot_framework/dialogs/reg_exp_recognizer.rb', line 15

def recognize(context)
  raise ArgumentError, "context must be a hash" unless context.is_a? Hash
  result = {score: 0.0, intent: nil}
  if context.fetch(:message, {}).fetch(:text, nil)
    utterance = context[:message][:text]
    locale = context[:message][:locale] || :*
    exp = @expressions[locale] ? @expressions[locale] : @expressions[:*]
    if exp
      matches = exp.match(utterance)
      if matches
        matched = matches.to_s
        result[:score] = matched.length / utterance.length
        result[:intent] = intent
        result[:expression] = exp
        result[:matched] = matches
      end
      yield nil, result
    else
      yield(ExpressionNotFoundForLocale, nil)
    end
  else
    yield(nil, result)
  end
end