Ade benchmark script for rubocop

Author: mtsmfm

Gemfile

@@ -2,3 +2,6 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in language_server.gemspec
 gemspec
+
+# TODO: Use released gem after new release includes https://github.com/bbatsov/rubocop/pull/4987
+gem 'rubocop', git: 'https://github.com/bbatsov/rubocop'

benchmark/rubocop

@@ -0,0 +1,25 @@
+#!/usr/bin/env ruby
+
+require 'bundler/setup'
+require 'benchmark/ips'
+require 'language_server'
+
+error_code = <<-EOS
+require "foo
+if a == "\\n"
+EOS
+warn_code = <<-EOS
+a = 1
+EOS
+valid_code = File.read(__FILE__)
+
+require 'pry-byebug'
+
+LanguageServer::Linter::Rubocop.new(valid_code).call
+Benchmark.ips do |x|
+  x.report(`git log --pretty=oneline --abbrev-commit -n 1`) do
+    [error_code, warn_code, valid_code].each do |code|
+      LanguageServer::Linter::Rubocop.new(code).call
+    end
+  end
+end

language_server.gemspec

@@ -39,5 +39,4 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "m"
   spec.add_development_dependency "awesome_print"
   spec.add_development_dependency "benchmark-ips"
-  spec.add_development_dependency "rubocop"
 end