Avoid method dispatch

Gemfile

@@ -28,3 +28,5 @@ group :test do
     gem 'liquid-c', github: 'Shopify/liquid-c', ref: 'main'
   end
 end
+
+gem "strscan", ">= 3.1.1"

Rakefile

@@ -73,7 +73,7 @@ end
 
 namespace :benchmark do
   desc "Run the liquid benchmark with lax parsing"
-  task :run do
+  task :lax do
     ruby "./performance/benchmark.rb lax"
   end
 
@@ -82,6 +82,9 @@ namespace :benchmark do
     ruby "./performance/benchmark.rb strict"
   end
 
+  desc "Run the liquid benchmark with both lax and strict parsing"
+  task run: [:lax, :strict]
+
   desc "Run unit benchmarks"
   task :unit do
     Dir["./performance/unit/*_benchmark.rb"].each do |file|

lib/liquid/tokenizer.rb

@@ -17,6 +17,7 @@ module Liquid
     def initialize(source, line_numbers = false, line_number: nil, for_liquid_tag: false)
       @line_number    = line_number || (line_numbers ? 1 : nil)
       @for_liquid_tag = for_liquid_tag
+      @source         = source
       @ss             = StringScanner.new(source)
     end
 
@@ -78,7 +79,7 @@ module Liquid
       end
 
       @ss.pos -= 2
-      @ss.string.byteslice(start, @ss.pos - start)
+      @source.byteslice(start, @ss.pos - start)
     end
 
     def next_variable_token
@@ -88,9 +89,7 @@ module Liquid
       byte_a = @ss.scan_byte
 
       until @ss.eos?
-        while @ss.eos? == false && byte_a != CLOSE_CURLEY && byte_a != OPEN_CURLEY
+        byte_a = @ss.scan_byte while @ss.eos? == false && byte_a != CLOSE_CURLEY && byte_a != OPEN_CURLEY
-          byte_a = @ss.scan_byte
-        end
 
         break if @ss.eos?
 
@@ -108,7 +107,7 @@ module Liquid
         end
       end
 
-      return "{{"
+      "{{"
     end
 
     def next_tag_token(start = nil)
@@ -116,7 +115,7 @@ module Liquid
 
       @ss.scan_until(TAG_END)
 
-      @ss.string.byteslice(start, @ss.pos - start)
+      @source.byteslice(start, @ss.pos - start)
     end
   end
 end

performance/benchmark.rb

@@ -8,14 +8,14 @@ Liquid::Template.error_mode = ARGV.first.to_sym if ARGV.first
 profiler = ThemeRunner.new
 
 Benchmark.ips do |x|
-  x.time   = 10
+  x.time   = 20
-  x.warmup = 5
+  x.warmup = 10
 
   puts
   puts "Running benchmark for #{x.time} seconds (with #{x.warmup} seconds warmup)."
   puts
 
   x.report("parse:") { profiler.compile }
-  x.report("render:") { profiler.render }
+  # x.report("render:") { profiler.render }
-  x.report("parse & render:") { profiler.run }
+  # x.report("parse & render:") { profiler.run }
 end