Merge pull request #399 from ydah/fix-error-when-use-own-stack

Fix an error for using parameterizing rules with own stack in semantic action

Author: yui-knk

lib/lrama/grammar/rule_builder.rb

@@ -130,7 +130,7 @@ def process_rhs(parameterizing_rule_resolver)
               @replaced_rhs << lhs_token
               parameterizing_rule_resolver.created_lhs_list << lhs_token
               parameterizing_rule.rhs_list.each do |r|
-                rule_builder = RuleBuilder.new(@rule_counter, @midrule_action_counter, lhs_tag: token.lhs_tag, skip_preprocess_references: true)
+                rule_builder = RuleBuilder.new(@rule_counter, @midrule_action_counter, lhs_tag: token.lhs_tag)
                 rule_builder.lhs = lhs_token
                 r.symbols.each { |sym| rule_builder.add_rhs(bindings.resolve_symbol(sym)) }
                 rule_builder.line = line

spec/fixtures/integration/user_defined_parameterizing_rules.y

@@ -25,6 +25,7 @@ static int yyerror(YYLTYPE *loc, const char *str);
                     {
                         $$ = $1 + $2;
                         printf("(%d, %d)\n", $1, $2);
+                        printf("(%d, %d)\n", $:1, $:2);
                     }
                 ;
 

spec/lrama/integration_spec.rb

@@ -98,8 +98,10 @@ def generate_object(grammar_file_path, c_path, obj_path, command_args: [])
     it "prints messages corresponding to rules" do
       expected = <<~STR
         (2, 3)
+        (-2, -1)
         pair even odd: 5
         (1, 0)
+        (-2, -1)
         pair odd even: 1
       STR
       test_parser("user_defined_parameterizing_rules", "2 3 ; 1 0", expected)