Class: Kotoshu::Readers::PhonetTable::Rule

Inherits:
Struct
  • Object
show all
Defined in:
lib/kotoshu/readers/aff_data.rb

Overview

Rule class for phonetic transformations.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#end ⇒ Boolean

Match at end

Returns:

  • (Boolean) —

    the current value of end



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# File 'lib/kotoshu/readers/aff_data.rb', line 366

def end
  @end
end

#followup ⇒ Boolean

Follow-up rule

Returns:

  • (Boolean) —

    the current value of followup



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# File 'lib/kotoshu/readers/aff_data.rb', line 366

def followup
  @followup
end

#priority ⇒ Integer

Rule priority

Returns:

  • (Integer) —

    the current value of priority



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# File 'lib/kotoshu/readers/aff_data.rb', line 366

def priority
  @priority
end

#replacement ⇒ String

Replacement string

Returns:

  • (String) —

    the current value of replacement



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# File 'lib/kotoshu/readers/aff_data.rb', line 366

def replacement
  @replacement
end

#search ⇒ Regexp

Search pattern

Returns:

  • (Regexp) —

    the current value of search



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# File 'lib/kotoshu/readers/aff_data.rb', line 366

def search
  @search
end

#start ⇒ Boolean

Match at start

Returns:

  • (Boolean) —

    the current value of start



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# File 'lib/kotoshu/readers/aff_data.rb', line 366

def start
  @start
end

Instance Method Details

#match?(word, pos) ⇒ Boolean

Check if rule matches at position.

Parameters:

  • word (String) —

    Word to check

  • pos (Integer) —

    Position in word

Returns:

  • (Boolean) —

    True if matches



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# File 'lib/kotoshu/readers/aff_data.rb', line 395

def match?(word, pos)
  !match_length(word, pos).nil?
end

#match_length(word, pos) ⇒ Integer?

Length of the match if this rule fires at pos in word, or nil if the rule doesn't match. The metaphone walker uses the length to advance its position past the consumed input.

Parameters:

  • word (String) —

    Word to match against

  • pos (Integer) —

    Position in word

Returns:

  • (Integer, nil) —

    Length of matched substring, or nil



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# File 'lib/kotoshu/readers/aff_data.rb', line 374

def match_length(word, pos)
  return nil if start && pos.positive?

  match_data = if self[:end]
                 # Anchor at end of word: strip the prefix so
                 # the regex can match without considering the
                 # preceding characters.
                 search.match(word[pos..])
               else
                 search.match(word, pos)
               end
  return nil unless match_data

  match_data.to_s.length
end