Class: RBS::Buffer

Inherits:
Object
  • Object
show all
Defined in:
lib/rbs/buffer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name:, content:) ⇒ Buffer

Returns a new instance of Buffer.



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# File 'lib/rbs/buffer.rb', line 8

def initialize(name:, content:)
  @name = name
  @content = content
end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/rbs/buffer.rb', line 6

def content
  @content
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/rbs/buffer.rb', line 5

def name
  @name
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/rbs/buffer.rb', line 63

def inspect
  "#<RBS::Buffer:#{__id__} @name=#{name}, @content=#{content.bytesize} bytes, @lines=#{lines.size} lines,>"
end

#last_position ⇒ Object 



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# File 'lib/rbs/buffer.rb', line 59

def last_position
  content.size
end

#lines ⇒ Object 



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# File 'lib/rbs/buffer.rb', line 13

def lines
  @lines ||= content.lines
end

#loc_to_pos(loc) ⇒ Object 



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# File 'lib/rbs/buffer.rb', line 49

def loc_to_pos(loc)
  line, column = loc

  if range = ranges[line - 1]
    range.begin + column
  else
    last_position
  end
end

#pos_to_loc(pos) ⇒ Object 



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# File 'lib/rbs/buffer.rb', line 37

def pos_to_loc(pos)
  index = ranges.bsearch_index do |range|
    pos < range.end ? true : false
  end

  if index
    [index + 1, pos - ranges[index].begin]
  else
    [ranges.size + 1, 0]
  end
end

#ranges ⇒ Object 



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# File 'lib/rbs/buffer.rb', line 17

def ranges
  @ranges ||=
    begin
      @ranges = []
      offset = 0
      lines.each do |line|
        size = line.size
        range = offset...(offset+size)
        @ranges << range
        offset += size
      end

      if !content.end_with?("\n") && content.size > 0
        @ranges[-1] = @ranges[-1].begin...(@ranges[-1].end+1)
      end

      @ranges
    end
end