Class: RubyLsp::Document::Utf32Scanner

Inherits:
Scanner
  • Object
show all
Defined in:
lib/ruby_lsp/document.rb

Overview

For the UTF-32 encoding, positions correspond directly to codepoints

Constant Summary

Constants inherited from Scanner

Scanner::LINE_BREAK, Scanner::SURROGATE_PAIR_START

Instance Method Summary collapse

Constructor Details

#initialize(source) ⇒ Utf32Scanner

: (String) -> void



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# File 'lib/ruby_lsp/document.rb', line 316

def initialize(source)
  super()
  @codepoints = source.codepoints #: Array[Integer]
end

Instance Method Details

#find_char_position(position) ⇒ Object

: (Hash[Symbol, untyped] position) -> Integer



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# File 'lib/ruby_lsp/document.rb', line 323

def find_char_position(position)
  # Find the character index for the beginning of the requested line
  until @current_line == position[:line]
    codepoint = @codepoints[@pos] #: Integer?
    raise InvalidLocationError unless codepoint

    until LINE_BREAK == @codepoints[@pos]
      @pos += 1
      codepoint = @codepoints[@pos] #: Integer?
      raise InvalidLocationError unless codepoint
    end

    @pos += 1
    @current_line += 1
  end

  @pos + position[:character]
end