src/openvic-dataloader/v2script/ModifierGrammar.hpp


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#pragma once

#include <openvic-dataloader/v2script/AbstractSyntaxTree.hpp>

#include <lexy/dsl.hpp>

#include "SimpleGrammar.hpp"
#include "TriggerGrammar.hpp"

namespace ovdl::v2script::grammar {
   constexpr auto modifier_keyword = LEXY_KEYWORD("modifier", lexy::dsl::inline_<Identifier>);
   constexpr auto factor_keyword = LEXY_KEYWORD("factor", lexy::dsl::inline_<Identifier>);

   struct FactorStatement {
      static constexpr auto rule = factor_keyword >> lexy::dsl::equal_sign + lexy::dsl::inline_<Identifier>;
      static constexpr auto value = lexy::as_string<std::string> | lexy::new_<ast::FactorNode, ast::NodePtr>;
   };

   struct ModifierStatement {
      static constexpr auto rule =
         modifier_keyword >>
         lexy::dsl::curly_bracketed.list(
            lexy::dsl::p<FactorStatement> |
            lexy::dsl::p<TriggerList>);

      static constexpr auto value =
         lexy::as_list<std::vector<ast::NodePtr>> >>
         lexy::callback<ast::NodePtr>(
            [](auto&& list) {
               return ast::make_node_ptr<ast::ModifierNode>(LEXY_MOV(list));
            });
   };
}