code styling

lib/liquid.rb

@@ -21,6 +21,8 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+require "strscan"
+
 module Liquid
   FilterSeparator             = /\|/
   ArgumentSeparator           = ','
@@ -44,6 +46,7 @@ module Liquid
   VariableParser              = /\[(?>[^\[\]]+|\g<0>)*\]|#{VariableSegment}+\??/o
 
   RAISE_EXCEPTION_LAMBDA = ->(_e) { raise }
+  HAS_STRING_SCANNER_SCAN_BYTE = StringScanner.instance_methods.include?(:scan_byte)
 end
 
 require "liquid/version"

lib/liquid/expression.rb

@@ -160,5 +160,6 @@ module Liquid
     end
   end
 
-  Expression = StringScanner.instance_methods.include?(:scan_byte) ? Expression2 : Expression1
+  # Remove this once we can depend on strscan >= 3.1.1
+  Expression = HAS_STRING_SCANNER_SCAN_BYTE ? Expression2 : Expression1
 end

lib/liquid/lexer.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require "strscan"
-
 module Liquid
   class Lexer1
     SPECIALS = {
@@ -229,5 +227,5 @@ module Liquid
   end
 
   # Remove this once we can depend on strscan >= 3.1.1
-  Lexer = StringScanner.instance_methods.include?(:scan_byte) ? Lexer2 : Lexer1
+  Lexer = HAS_STRING_SCANNER_SCAN_BYTE ? Lexer2 : Lexer1
 end