class SimpleCov::SourceFile::LineBuilder

‘# :nocov:` block ranges via `skipped!`.
never-counted lines). Applies `# simplecov:disable` /
1-based line number, and the Coverage hit count (or nil for
raw line-coverage array. Each line carries its source text, its
Builds the `SourceFile::Line` objects for a source file from the

def build_lines

HTML report's source view — even without per-line hits.
every position. The source rows are still useful — e.g. for the
doesn't emit "lines" data, so look up `nil` (never-counted) for
When `:line` coverage is disabled, the Ruby Coverage module 
def build_lines
  line_coverage = @source_file.coverage_data["lines"] || []
  @source_file.src.map.with_index(1) do |src, i|
    SourceFile::Line.new(src, i, line_coverage[i - 1])
  end
end

def call 

def call
  lines = build_lines
  mark_skipped(lines, @source_file.skip_chunks_for(:line))
  lines
end

def initialize(source_file) 

def initialize(source_file)
  @source_file = source_file
end

def mark_skipped(lines, chunks)

`lines` array.
so each range needs to be shifted down by one to slice into the
numbers in the chunks are 1-based (more understandable elsewhere),
The array the lines are kept in is 0-based whereas the line 
def mark_skipped(lines, chunks)
  chunks.each { |chunk| lines[(chunk.begin - 1)..(chunk.end - 1)].each(&:skipped!) }
end