Class: JSON5::LineMap

Inherits:
Object
  • Object
show all
Defined in:
lib/json5/line_map.rb

Instance Method Summary collapse

Constructor Details

#initialize(source) ⇒ LineMap

Returns a new instance of LineMap.



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# File 'lib/json5/line_map.rb', line 5

def initialize(source)
  Input.new(source, limits: Limits.unbounded)
  @source = source
  @line_starts = build_line_starts.freeze
  freeze
end

Instance Method Details

#line_column(byte_offset) ⇒ Object 



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# File 'lib/json5/line_map.rb', line 17

def line_column(byte_offset)
  validate_byte_offset!(byte_offset)

  next_line = @line_starts.bsearch_index { |start_byte| start_byte > byte_offset }
  if crlf_middle?(byte_offset)
    return [next_line + 1, 1]
  end

  line_index = (next_line || @line_starts.length) - 1
  [line_index + 1, column_at(@line_starts.fetch(line_index), byte_offset)]
end

#position(byte_offset) ⇒ Object 



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# File 'lib/json5/line_map.rb', line 12

def position(byte_offset)
  line, column = line_column(byte_offset)
  Input::Position.new(byte_offset, line, column)
end