Class: HintableLevenshtein::Rule

Inherits:
Object
  • Object
show all
Defined in:
lib/hintable_levenshtein/rule_set.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#matcher ⇒ Object (readonly)

Returns the value of attribute matcher.



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# File 'lib/hintable_levenshtein/rule_set.rb', line 38

def matcher
  @matcher
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/hintable_levenshtein/rule_set.rb', line 38

def type
  @type
end

Class Method Details

.delete(matcher = nil) ⇒ Object 



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# File 'lib/hintable_levenshtein/rule_set.rb', line 26

def self.delete(matcher = nil)
  new(:delete, matcher)
end

.insert(matcher = nil) ⇒ Object 



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# File 'lib/hintable_levenshtein/rule_set.rb', line 30

def self.insert(matcher = nil)
  new(:insert, matcher)
end

.substitute(matcher = {}) ⇒ Object 



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# File 'lib/hintable_levenshtein/rule_set.rb', line 34

def self.substitute(matcher = {})
  new(:substitute, matcher)
end

Instance Method Details

#match?(event) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hintable_levenshtein/rule_set.rb', line 40

def match?(event)
  if event.type == type
    case type
    when :delete, :insert
      ret = case matcher
      when nil
        true
      when String
        !matcher.index(event.chr).nil?
      when Array
        matcher.include?(event.chr)
      else
        matcher === event.chr
      end
    when :substitute
      matcher.empty? || matcher[event.from] == event.to || matcher[event.to] == event.from
    end
  end
end

#to_s ⇒ Object 



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# File 'lib/hintable_levenshtein/rule_set.rb', line 60

def to_s
  "#{type} #{matcher.inspect}"
end