remove separate inline comment tag for IA reasons

Array#shift would move all the remaining elements of the array, which
is slower for larger arrays.

lib/liquid/tags/inline_comment.rb

@@ -1,19 +1,6 @@
 # frozen_string_literal: true
 
 module Liquid
-  # @liquid_public_docs
-  # @liquid_type tag
-  # @liquid_category syntax
-  # @liquid_name inline_comment
-  # @liquid_summary
-  #   Prevents an expression from being rendered or output.
-  # @liquid_description
-  #   Any text inside an `inline_comment` tag won't be rendered or output.
-  #
-  #   You can create multi-line inline comments. However, each line must begin with a `#`.
-  # @liquid_syntax
-  #   {% # content %}
-  # @liquid_syntax_keyword content The content of the comment.
   class InlineComment < Tag
     def initialize(tag_name, markup, options)
       super

lib/liquid/tokenizer.rb

@@ -8,11 +8,15 @@ module Liquid
       @source         = source.to_s.to_str
       @line_number    = line_number || (line_numbers ? 1 : nil)
       @for_liquid_tag = for_liquid_tag
+      @offset         = 0
       @tokens         = tokenize
     end
 
     def shift
-      (token = @tokens.shift) || return
+      token = @tokens[@offset]
+      return nil unless token
+
+      @offset += 1
 
       if @line_number
         @line_number += @for_liquid_tag ? 1 : token.count("\n")
@@ -31,7 +35,9 @@ module Liquid
       tokens = @source.split(TemplateParser)
 
       # removes the rogue empty element at the beginning of the array
-      tokens.shift if tokens[0]&.empty?
+      if tokens[0]&.empty?
+        @offset += 1
+      end
 
       tokens
     end

test/integration/tags/increment_tag_test.rb

@@ -6,20 +6,21 @@ class IncrementTagTest < Minitest::Test
   include Liquid
 
   def test_inc
-    assert_template_result('0', '{%increment port %}', {})
-    assert_template_result('0 1', '{%increment port %} {%increment port%}', {})
+    assert_template_result('0 1', '{%increment port %} {{ port }}')
+    assert_template_result(' 0 1 2', '{{port}} {%increment port %} {%increment port%} {{port}}')
     assert_template_result('0 0 1 2 1',
       '{%increment port %} {%increment starboard%} ' \
       '{%increment port %} {%increment port%} ' \
-      '{%increment starboard %}', {})
+      '{%increment starboard %}')
   end
 
   def test_dec
-    assert_template_result('9', '{%decrement port %}', { 'port' => 10 })
-    assert_template_result('-1 -2', '{%decrement port %} {%decrement port%}', {})
-    assert_template_result('1 5 2 2 5',
+    assert_template_result('-1 -1', '{%decrement port %} {{ port }}', { 'port' => 10 })
+    assert_template_result(' -1 -2 -2', '{{port}} {%decrement port %} {%decrement port%} {{port}}')
+    assert_template_result('0 1 2 0 3 1 1 3',
+      '{%increment starboard %} {%increment starboard%} {%increment starboard%} ' \
       '{%increment port %} {%increment starboard%} ' \
       '{%increment port %} {%decrement port%} ' \
-      '{%decrement starboard %}', { 'port' => 1, 'starboard' => 5 })
+      '{%decrement starboard %}')
   end
 end

test/test_helper.rb

@@ -44,7 +44,7 @@ module Minitest
       template = Liquid::Template.parse(template, line_numbers: true, error_mode: error_mode&.to_sym)
       file_system = StubFileSystem.new(partials || {})
       registers = Liquid::Registers.new(file_system: file_system)
-      context = Liquid::Context.build(environments: assigns, rethrow_errors: !render_errors, registers: registers)
+      context = Liquid::Context.build(static_environments: assigns, rethrow_errors: !render_errors, registers: registers)
       output = template.render(context)
       assert_equal(expected, output, message)
     end