class Covered::PartialSummary

def call(wrapper, output = $stdout, before: 4, after: 4)
	statistics = self.each(wrapper) do |coverage|
		line_offset = 1
		
		path = wrapper.relative_path(coverage.path)
		output.puts "", Rainbow(path).bold.underline
		
		counts = coverage.counts
		last_line = nil
		
		unless coverage.zero?
			coverage.read do |file|
				file.each_line do |line|
					range = Range.new([line_offset - before, 0].max, line_offset+after)
					
					if counts[range]&.include?(0)
						count = counts[line_offset]
						
						if last_line and last_line != line_offset-1
							output.puts ":".rjust(16)
						end
						
						print_annotations(output, coverage, line, line_offset)
						
						prefix = "#{line_offset}|".rjust(8) + "#{count}|".rjust(8)
						
						if count == nil
							output.write prefix
							output.write Rainbow(line).faint
						elsif count == 0
							output.write Rainbow(prefix).background(:darkred)
							output.write Rainbow(line).red
						else
							output.write Rainbow(prefix).background(:darkgreen)
							output.write Rainbow(line).green
						end
						
						# If there was no newline at end of file, we add one:
						unless line.end_with? $/
							output.puts
						end
						
						last_line = line_offset
					end
					
					line_offset += 1
				end
			end
		end
		
		coverage.print(output)
	end
	
	output.puts
	statistics.print(output)
end