1 files changed, 27 insertions, 0 deletions
diff --git a/tool/lrama/lib/lrama/grammar/parameterizing_rules/builder/separated_nonempty_list.rb b/tool/lrama/lib/lrama/grammar/parameterizing_rules/builder/separated_nonempty_list.rb
new file mode 100644
index 0000000000..64662180a0
--- /dev/null
+++ b/tool/lrama/lib/lrama/grammar/parameterizing_rules/builder/separated_nonempty_list.rb
@@ -0,0 +1,27 @@
+module Lrama
+  class Grammar
+    class ParameterizingRules
+      class Builder
+        class SeparatedNonemptyList < Base
+          def initialize(token, rule_counter, lhs, user_code, precedence_sym, line)
+            super
+            @separator = @args[0]
+            @token = @args[1]
+            @expected_argument_num = 2
+          end
+
+          def build
+            validate_argument_number!
+
+            rules = []
+            separated_list_token = Lrama::Lexer::Token::Ident.new(s_value: "separated_nonempty_list_#{@token.s_value}")
+            rules << Rule.new(id: @rule_counter.increment, _lhs: @lhs, _rhs: [separated_list_token], token_code: @user_code, precedence_sym: @precedence_sym, lineno: @line)
+            rules << Rule.new(id: @rule_counter.increment, _lhs: separated_list_token, _rhs: [@token], token_code: @user_code, precedence_sym: @precedence_sym, lineno: @line)
+            rules << Rule.new(id: @rule_counter.increment, _lhs: separated_list_token, _rhs: [separated_list_token, @separator, @token], token_code: @user_code, precedence_sym: @precedence_sym, lineno: @line)
+            rules
+          end
+        end
+      end
+    end
+  end
+end