header_behavior_map_provider.hpp

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#pragma once
 
#include <cstdint>
#include <filesystem>
#include <memory>
#include <string>
#include <unordered_map>
 
#include "gsl/pointers"
 
#include "porytiles/domain/services/behavior_map_provider.hpp"
#include "porytiles/utilities/c_parser/c_parser_facade.hpp"
#include "porytiles/utilities/c_parser/source_position.hpp"
#include "porytiles/utilities/result/chainable_result.hpp"
#include "porytiles/utilities/text/text_formatter.hpp"
#include "porytiles/xcut/diagnostics/user_diagnostics.hpp"
 
namespace porytiles {
 
class HeaderBehaviorMapProvider final : public BehaviorMapProvider {
  public:
    HeaderBehaviorMapProvider(
        std::filesystem::path header_path,
        gsl::not_null<const TextFormatter *> format,
        gsl::not_null<const UserDiagnostics *> diag)
        : header_path_{std::move(header_path)}, format_{format}, diag_{diag}
    {
    }
 
    [[nodiscard]] ChainableResult<std::uint16_t> lookup(const std::string &behavior_name) const override;
 
    [[nodiscard]] ChainableResult<std::string> lookup(std::uint16_t behavior_value) const override;
 
  private:
    ChainableResult<void> ensure_loaded() const;
 
    template <typename Entry>
    ChainableResult<void> try_add_behavior_entry(const Entry &entry) const;
 
    std::filesystem::path header_path_;
    const TextFormatter *format_;
    const UserDiagnostics *diag_;
    mutable bool loaded_{false};
    mutable bool load_failed_{false};
    mutable std::unique_ptr<CParserFacade> driver_;
    mutable std::unordered_map<std::string, std::uint16_t> name_to_value_;
    mutable std::unordered_map<std::uint16_t, std::string> value_to_name_;
    mutable std::unordered_map<std::string, SourcePosition> name_to_position_;
    mutable std::unordered_map<std::uint16_t, SourcePosition> value_to_position_;
};
 
} // namespace porytiles