Class: RedQuilt::SourceMap

Inherits:
Object
  • Object
show all
Defined in:
lib/red_quilt/source_map.rb

Instance Method Summary collapse

Constructor Details

#initialize(source) ⇒ SourceMap

Returns a new instance of SourceMap.



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# File 'lib/red_quilt/source_map.rb', line 5

def initialize(source)
  @source = source
  @line_starts = build_line_starts(source)
end

Instance Method Details

#line_column(byte_offset) ⇒ Object 



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# File 'lib/red_quilt/source_map.rb', line 10

def line_column(byte_offset)
  line = (@line_starts.bsearch_index { |s| s > byte_offset } || @line_starts.length) - 1
  line_start = @line_starts[line]
  column = @source.byteslice(line_start, byte_offset - line_start).to_s.length
  { line: line + 1, column: column }
end