slang_vfs.hpp

// @file slang_vfs.hpp
// @author Xein
// @date 17 Jul 2026
 
#pragma once
 
#include <slang.h>
#include <string>
#include <string_view>
#include <vector>
 
namespace renderer {
 
class SlangVfs final : public ISlangFileSystem {
public:
  static auto get() -> SlangVfs&;
 
  SLANG_NO_THROW auto SLANG_MCALL queryInterface(const SlangUUID& uuid, void** out_object) -> SlangResult override;
 
  SLANG_NO_THROW auto SLANG_MCALL addRef() -> uint32_t override { return 1; }
 
  SLANG_NO_THROW auto SLANG_MCALL release() -> uint32_t override { return 1; }
 
  SLANG_NO_THROW auto SLANG_MCALL castAs(const SlangUUID& uuid) -> void* override;
 
  SLANG_NO_THROW auto SLANG_MCALL loadFile(const char* path, ISlangBlob** out_blob) -> SlangResult override;
 
  static auto normalizeUri(std::string_view path) -> std::string;
 
  static auto makeBlob(const void* data, size_t size) -> ISlangBlob*;

  class Recorder {
  public:
    Recorder();
    ~Recorder();
 
    Recorder(const Recorder&) = delete;
    auto operator=(const Recorder&) -> Recorder& = delete;
    Recorder(Recorder&&) = delete;
    auto operator=(Recorder&&) -> Recorder& = delete;
 
    [[nodiscard]]
    auto resolved() const -> const std::vector<std::string>& {
      return m_resolved;
    }
 
  private:
    friend class SlangVfs;
 
    void record(std::string uri);
 
    std::vector<std::string> m_resolved;
  };
 
private:
  static inline thread_local Recorder* s_recorder = nullptr;
};
 
}