Remove duplication, expand for next_line.

app/helpers/commits_helper.rb

@@ -25,8 +25,8 @@ module CommitsHelper
 
   def side_diff_line(diff, index)
     Gitlab::DiffParser.new(diff.diff.lines.to_a, diff.new_path)
-      .each_for_parallel do |full_line, type, line_code, line_new, line_old, next_line|
-        yield(full_line, type, line_code, line_new, line_old, next_line)
+      .each do |full_line, type, line_code, line_new, line_old, raw_line, next_line|
+        yield(full_line, type, line_code, line_new, line_old, raw_line, next_line)
       end
   end
 

app/views/projects/commits/_parallel_view.html.haml

 / Side-by-side diff view
 %div.text-file
   %table
-    - side_diff_line(diff, index) do |line, type, line_code, line_new, line_old, next_line|
+    - side_diff_line(diff, index) do |line, type, line_code, line_new, line_old, raw_line, next_line|
       - next if type == 'new'
       %tr.line_holder.parallel{ id: line_code, class: "#{type}" }
-        - if type != 'match'
+        - if type == "match"
+          = render "projects/commits/diffs/match_line_parallel", {line: line,
+          line_old: line_old, line_new: line_new, bottom: false}
+        - else
           %td.old_line
             = link_to raw(line_old), "##{line_code}", id: line_code
             - if type == 'old'

app/views/projects/commits/diffs/_match_line_parallel.html.haml

+%td.old_line
+  %td.line_content.parallel.matched= line
+%td.new_line
+  %td.line_content.parallel.matched= line

lib/gitlab/diff_parser.rb

@@ -14,47 +14,6 @@ module Gitlab
       line_new = 1
       type = nil
 
-      lines_arr = ::Gitlab::InlineDiff.processing lines
-      lines_arr.each do |line|
-        raw_line = line.dup
-
-        next if filename?(line)
-
-        full_line = html_escape(line.gsub(/\n/, ''))
-        full_line = ::Gitlab::InlineDiff.replace_markers full_line
-
-        if line.match(/^@@ -/)
-          type = "match"
-
-          line_old = line.match(/\-[0-9]*/)[0].to_i.abs rescue 0
-          line_new = line.match(/\+[0-9]*/)[0].to_i.abs rescue 0
-
-          next if line_old == 1 && line_new == 1 #top of file
-          yield(full_line, type, nil, line_new, line_old)
-          next
-        else
-          type = identification_type(line)
-          line_code = generate_line_code(new_path, line_new, line_old)
-          yield(full_line, type, line_code, line_new, line_old, raw_line)
-        end
-
-
-        if line[0] == "+"
-          line_new += 1
-        elsif line[0] == "-"
-          line_old += 1
-        else
-          line_new += 1
-          line_old += 1
-        end
-      end
-    end
-
-    def each_for_parallel
-      line_old = 1
-      line_new = 1
-      type = nil
-
       lines_arr = ::Gitlab::InlineDiff.processing lines
 
       lines_arr.each_cons(2) do |line, next_line|
@@ -80,7 +39,7 @@ module Gitlab
         else
           type = identification_type(line)
           line_code = generate_line_code(new_path, line_new, line_old)
-          yield(full_line, type, line_code, line_new, line_old, next_line)
+          yield(full_line, type, line_code, line_new, line_old, raw_line, next_line)
         end