Class: NLPBackpack::Chunker::RegexChunker

Inherits:
Object
  • Object
show all
Defined in:
lib/nlp_backpack/chunker/regex_chunker.rb

Instance Method Summary collapse

Constructor Details

#initialize(pattern) ⇒ RegexChunker

Returns a new instance of RegexChunker.



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# File 'lib/nlp_backpack/chunker/regex_chunker.rb', line 15

def initialize(pattern)
  @pattern = prepare_pattern(pattern)

  @cached_pattern = @pattern.clone
  @cached_pattern.freeze

  @matched_patterns = []
  @potential_pattern = []
end

Instance Method Details

#match(pos_array) ⇒ Object

Extract all matches



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# File 'lib/nlp_backpack/chunker/regex_chunker.rb', line 26

def match(pos_array)
  next_pattern(:start)

  pos_array.each do |word|
    begin
      pos = word[1]

      if pos.match(@current_pattern.tag)
        @potential_pattern << word[0]
        next_pattern(:matched)
      else
        next_pattern(:no_match)
      end
    rescue Retry
      retry
    end
  end

  pop_potential_pattern!

  @matched_patterns.map {|pattern| pattern.join(" ") }
end