Fix stack level too deep error

2026-09-18 18:30:40 -07:00 · 2017-05-09 11:54:20 -04:00
parent 1370a102c9
commit 1707980a48
2 changed files with 17 additions and 0 deletions
@@ -7,6 +7,7 @@ module Liquid
  #   c.evaluate #=> true
  #
  class Condition #:nodoc:
+    @@depth = 0
    @@operators = {
      '=='.freeze => ->(cond, left, right) {  cond.send(:equal_variables, left, right) },
      '!='.freeze => ->(cond, left, right) { !cond.send(:equal_variables, left, right) },
@@ -47,6 +48,11 @@ module Liquid
      when :or
        result || @child_condition.evaluate(context)
      when :and
+        @@depth += 1
+        if @@depth >= 500
+          @@depth = 0
+          raise StackLevelError, "Nesting too deep".freeze
+        end
        result && @child_condition.evaluate(context)
      else
        result