123456789_123456789_123456789_123456789_123456789_

Class: Prism::CodeUnitsCache::UTF32Counter

Do not use. This class is for internal use only.
Relationships & Source Files
Inherits: Object
Defined in: lib/prism/parse_result.rb

Overview

Counter used for UTF-32, where one code unit equals one code point and matches String#length. Also used as a best-effort fallback for any other encoding that does not have a dedicated counter.

Class Method Summary

Instance Method Summary

Constructor Details

.new(source, encoding) ⇒ UTF32Counter

: (String source, Encoding encoding) -> void

[ GitHub ] 

  


# File 'lib/prism/parse_result.rb', line 285



def initialize(source, encoding)
  @source = source
  @encoding = encoding
end


  







Instance Method Details



  

    #count(byte_offset, byte_length)  
  



  

    
: (Integer byte_offset, Integer byte_length) -> Integer

  



  [ GitHub ]


  

  


# File 'lib/prism/parse_result.rb', line 291



def count(byte_offset, byte_length)
  (@source.byteslice(byte_offset, byte_length) or raise).encode(@encoding, invalid: :replace, undef: :replace).length
end