helpers.rb in liquidscript-0.11.0

- old
+ new

@@ -9,10 +9,17 @@
 
         def set(literal)
           top.context.set(literal.value.intern)
         end
 
+        def check(literal)
+          top.context.get(literal.value.intern,
+            :dry_run => true)
+        rescue InvalidReferenceError
+          false
+        end
+
         def code(type, *args)
           Liquidscript::ICR::Code.new type, *args
         end
 
         def _compile_block
@@ -29,9 +36,10 @@
                  :lparen => action { compile_call(v)       },
                  :equal  => action { compile_assignment(v) },
                  :prop   => action { compile_property(v)   },
                  :lbrack => action { compile_access(v)     },
                  :range  => action { |_| compile_range(v)  },
+                 :erange => action { |_| compile_erange(v) },
                  [:binop,
                   :minus,
                   :plus] => action { compile_binop(v)      },
                  :unop   => action { |o| code :op, v, o    },
                  :_      => default || action { v          }