7 files changed, 840 insertions, 0 deletions

@@ -0,0 +1,11 @@
+find_package(Protobuf REQUIRED)
+
+add_executable(validator
+  human_processor.cpp
+  main.cpp
+  validator.cpp
+)
+set_property(TARGET validator PROPERTY CXX_STANDARD 20)
+set_property(TARGET validator PROPERTY CXX_STANDARD_REQUIRED ON)
+target_include_directories(validator PUBLIC ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/tools)
+target_link_libraries(validator PUBLIC protos util protobuf::libprotobuf)
@@ -0,0 +1,425 @@
+#include "human_processor.h"
+
+#include <google/protobuf/message.h>
+#include <google/protobuf/text_format.h>
+
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <map>
+#include <optional>
+#include <sstream>
+#include <string>
+
+#include "structs.h"
+
+namespace com::fourisland::lingo2_archipelago {
+namespace {
+
+template <typename T>
+T ReadMessageFromFile(const std::string& path) {
+  std::cout << "Processing " << path << std::endl;
+
+  std::ifstream file(path);
+  std::stringstream buffer;
+  buffer << file.rdbuf();
+
+  T message;
+  google::protobuf::TextFormat::ParseFromString(buffer.str(), &message);
+
+  return message;
+}
+
+class HumanProcessor {
+ public:
+  HumanProcessor(const std::string& mapdir, CollectedInfo& info)
+      : mapdir_(mapdir), info_(info) {}
+
+  void Run() {
+    std::filesystem::path datadir_path = mapdir_;
+
+    ProcessConnectionsFile(datadir_path / "connections.txtpb", std::nullopt);
+    ProcessMaps(datadir_path);
+    ProcessIdsFile(datadir_path / "ids.txtpb");
+  }
+
+ private:
+  void ProcessMaps(std::filesystem::path path) {
+    std::filesystem::path maps_dir = path / "maps";
+    for (auto const& dir_entry :
+         std::filesystem::directory_iterator(maps_dir)) {
+      ProcessMap(dir_entry.path());
+    }
+  }
+
+  void ProcessMap(std::filesystem::path path) {
+    std::string map_name = path.filename();
+
+    ProcessConnectionsFile(path / "connections.txtpb", map_name);
+    ProcessDoorsFile(path / "doors.txtpb", map_name);
+    ProcessRooms(path / "rooms", map_name);
+  }
+
+  void ProcessRooms(std::filesystem::path path,
+                    const std::string& current_map_name) {
+    for (auto const& dir_entry : std::filesystem::directory_iterator(path)) {
+      auto room = ReadMessageFromFile<HumanRoom>(dir_entry.path().string());
+      ProcessRoom(room, current_map_name);
+    }
+  }
+
+  void ProcessRoom(const HumanRoom& h_room,
+                   const std::string& current_map_name) {
+    RoomIdentifier room_identifier;
+    room_identifier.set_map(current_map_name);
+    room_identifier.set_name(h_room.name());
+
+    RoomInfo& room_info = info_.rooms[room_identifier];
+    room_info.definitions.push_back(h_room);
+
+    for (const HumanPanel& h_panel : h_room.panels()) {
+      ProcessPanel(h_panel, current_map_name, h_room.name());
+    }
+
+    for (const HumanPainting& h_painting : h_room.paintings()) {
+      ProcessPainting(h_painting, current_map_name, h_room.name());
+    }
+
+    for (const HumanPort& h_port : h_room.ports()) {
+      ProcessPort(h_port, current_map_name, h_room.name());
+    }
+
+    for (const HumanLetter& h_letter : h_room.letters()) {
+      ProcessLetter(h_letter, current_map_name, h_room.name());
+    }
+
+    for (const HumanMastery& h_mastery : h_room.masteries()) {
+      ProcessMastery(h_mastery, current_map_name, h_room.name());
+    }
+
+    for (const HumanKeyholder& h_keyholder : h_room.keyholders()) {
+      ProcessKeyholder(h_keyholder, current_map_name, h_room.name());
+    }
+  }
+
+  void ProcessPanel(const HumanPanel& h_panel,
+                    const std::string& current_map_name,
+                    const std::string& current_room_name) {
+    PanelIdentifier panel_identifier;
+    panel_identifier.set_map(current_map_name);
+    panel_identifier.set_room(current_room_name);
+    panel_identifier.set_name(h_panel.name());
+
+    PanelInfo& panel_info = info_.panels[panel_identifier];
+    panel_info.definitions.push_back(h_panel);
+    panel_info.proxies[h_panel.answer()].definitions.push_back(Proxy());
+
+    for (const Proxy& h_proxy : h_panel.proxies()) {
+      ProxyInfo& proxy_info = panel_info.proxies[h_proxy.answer()];
+      proxy_info.definitions.push_back(h_proxy);
+    }
+
+    if (h_panel.has_required_door()) {
+      DoorIdentifier required_door_identifier =
+          *GetCompleteDoorIdentifier(h_panel.required_door(), current_map_name);
+      DoorInfo& required_door_info = info_.doors[required_door_identifier];
+      required_door_info.panels_referenced_by.push_back(panel_identifier);
+    }
+
+    if (h_panel.has_required_room()) {
+      RoomIdentifier required_room_identifier =
+          *GetCompleteRoomIdentifier(h_panel.required_room(), current_map_name);
+      RoomInfo& required_room_info = info_.rooms[required_room_identifier];
+      required_room_info.panels_referenced_by.push_back(panel_identifier);
+    }
+  }
+
+  void ProcessPainting(const HumanPainting& h_painting,
+                       const std::string& current_map_name,
+                       const std::string& current_room_name) {
+    PaintingIdentifier painting_identifier;
+    painting_identifier.set_map(current_map_name);
+    painting_identifier.set_room(current_room_name);
+    painting_identifier.set_name(h_painting.name());
+
+    PaintingInfo& painting_info = info_.paintings[painting_identifier];
+    painting_info.definitions.push_back(h_painting);
+
+    if (h_painting.has_required_door()) {
+      DoorIdentifier required_door_identifier = *GetCompleteDoorIdentifier(
+          h_painting.required_door(), current_map_name);
+      DoorInfo& required_door_info = info_.doors[required_door_identifier];
+      required_door_info.paintings_referenced_by.push_back(painting_identifier);
+    }
+  }
+
+  void ProcessPort(const HumanPort& h_port, const std::string& current_map_name,
+                   const std::string& current_room_name) {
+    PortIdentifier port_identifier;
+    port_identifier.set_map(current_map_name);
+    port_identifier.set_room(current_room_name);
+    port_identifier.set_name(h_port.name());
+
+    PortInfo& port_info = info_.ports[port_identifier];
+    port_info.definitions.push_back(h_port);
+
+    if (h_port.has_required_door()) {
+      DoorIdentifier required_door_identifier =
+          *GetCompleteDoorIdentifier(h_port.required_door(), current_map_name);
+      DoorInfo& required_door_info = info_.doors[required_door_identifier];
+      required_door_info.ports_referenced_by.push_back(port_identifier);
+    }
+  }
+
+  void ProcessLetter(const HumanLetter& h_letter,
+                     const std::string& current_map_name,
+                     const std::string& current_room_name) {
+    LetterIdentifier letter_identifier =
+        std::make_tuple(h_letter.key()[0], h_letter.level2());
+    LetterInfo& letter_info = info_.letters[letter_identifier];
+
+    RoomIdentifier room_identifier;
+    room_identifier.set_map(current_map_name);
+    room_identifier.set_name(current_room_name);
+    letter_info.defined_in.push_back(room_identifier);
+  }
+
+  void ProcessMastery(const HumanMastery& h_mastery,
+                      const std::string& current_map_name,
+                      const std::string& current_room_name) {
+    // Nothing really to validate about masteries yet.
+  }
+
+  void ProcessKeyholder(const HumanKeyholder& h_keyholder,
+                        const std::string& current_map_name,
+                        const std::string& current_room_name) {
+    KeyholderIdentifier keyholder_identifier;
+    keyholder_identifier.set_map(current_map_name);
+    keyholder_identifier.set_room(current_room_name);
+    keyholder_identifier.set_name(h_keyholder.name());
+
+    KeyholderInfo& keyholder_info = info_.keyholders[keyholder_identifier];
+    keyholder_info.definitions.push_back(h_keyholder);
+  }
+
+  void ProcessDoorsFile(std::filesystem::path path,
+                        const std::string& current_map_name) {
+    if (!std::filesystem::exists(path)) {
+      return;
+    }
+
+    auto doors = ReadMessageFromFile<HumanDoors>(path.string());
+
+    for (const HumanDoor& door : doors.doors()) {
+      ProcessDoor(door, current_map_name);
+    }
+  }
+
+  void ProcessDoor(const HumanDoor& h_door,
+                   const std::string& current_map_name) {
+    DoorIdentifier door_identifier;
+    door_identifier.set_map(current_map_name);
+    door_identifier.set_name(h_door.name());
+
+    DoorInfo& door_info = info_.doors[door_identifier];
+    door_info.definitions.push_back(h_door);
+
+    if (h_door.has_location_room()) {
+      RoomIdentifier location_room_identifier;
+      location_room_identifier.set_map(current_map_name);
+      location_room_identifier.set_name(h_door.location_room());
+      info_.rooms[location_room_identifier].doors_referenced_by.push_back(
+          door_identifier);
+    }
+
+    for (const PaintingIdentifier& pi : h_door.move_paintings()) {
+      auto complete_painting_identifier =
+          GetCompletePaintingIdentifier(pi, current_map_name, std::nullopt);
+      if (complete_painting_identifier) {
+        PaintingInfo& move_painting_info =
+            info_.paintings[*complete_painting_identifier];
+        move_painting_info.doors_referenced_by.push_back(door_identifier);
+      } else {
+        door_info.malformed_identifiers.paintings.push_back(pi);
+      }
+    }
+
+    for (const PanelIdentifier& pi : h_door.panels()) {
+      auto complete_panel_identifier = GetCompletePanelIdentifierWithoutAnswer(
+          pi, current_map_name, std::nullopt);
+      if (complete_panel_identifier) {
+        PanelInfo& panel_info = info_.panels[*complete_panel_identifier];
+        panel_info.doors_referenced_by.push_back(door_identifier);
+
+        if (pi.has_answer()) {
+          panel_info.proxies[pi.answer()].doors_referenced_by.push_back(
+              door_identifier);
+        }
+      } else {
+        door_info.malformed_identifiers.panels.push_back(pi);
+      }
+    }
+
+    for (const KeyholderIdentifier& ki : h_door.keyholders()) {
+      auto complete_keyholder_identifier =
+          GetCompleteKeyholderIdentifierWithoutKey(ki, current_map_name,
+                                                   std::nullopt);
+      if (complete_keyholder_identifier) {
+        KeyholderInfo& keyholder_info =
+            info_.keyholders[*complete_keyholder_identifier];
+        keyholder_info.doors_referenced_by.push_back(door_identifier);
+      } else {
+        door_info.malformed_identifiers.keyholders.push_back(ki);
+      }
+    }
+
+    for (const RoomIdentifier& ri : h_door.rooms()) {
+      RoomIdentifier complete_room_identifier =
+          *GetCompleteRoomIdentifier(ri, current_map_name);
+      RoomInfo& room_info = info_.rooms[complete_room_identifier];
+      room_info.doors_referenced_by.push_back(door_identifier);
+    }
+
+    for (const DoorIdentifier& di : h_door.doors()) {
+      DoorIdentifier complete_door_identifier =
+          *GetCompleteDoorIdentifier(di, current_map_name);
+      DoorInfo& other_door_info = info_.doors[complete_door_identifier];
+      other_door_info.doors_referenced_by.push_back(door_identifier);
+    }
+  }
+
+  void ProcessConnectionsFile(std::filesystem::path path,
+                              std::optional<std::string> current_map_name) {
+    if (!std::filesystem::exists(path)) {
+      return;
+    }
+
+    auto connections = ReadMessageFromFile<HumanConnections>(path.string());
+
+    for (const HumanConnection& connection : connections.connections()) {
+      ProcessConnection(connection, current_map_name);
+    }
+  }
+
+  void ProcessConnection(const HumanConnection& human_connection,
+                         const std::optional<std::string>& current_map_name) {
+    if (human_connection.has_from_room()) {
+      if (current_map_name) {
+        RoomIdentifier room_identifier;
+        room_identifier.set_map(*current_map_name);
+        room_identifier.set_name(human_connection.from_room());
+
+        RoomInfo& room_info = info_.rooms[room_identifier];
+        room_info.connections_referenced_by.push_back(human_connection);
+      } else {
+        // Not sure where else to store this right now.
+        std::cout << "A global connection used from_room." << std::endl;
+      }
+    } else if (human_connection.has_from()) {
+      ProcessSingleConnection(human_connection, human_connection.from(),
+                              current_map_name);
+    }
+
+    if (human_connection.has_to_room()) {
+      if (current_map_name) {
+        RoomIdentifier room_identifier;
+        room_identifier.set_map(*current_map_name);
+        room_identifier.set_name(human_connection.to_room());
+
+        RoomInfo& room_info = info_.rooms[room_identifier];
+        room_info.connections_referenced_by.push_back(human_connection);
+      } else {
+        // Not sure where else to store this right now.
+        std::cout << "A global connection used to_room." << std::endl;
+      }
+    } else if (human_connection.has_to()) {
+      ProcessSingleConnection(human_connection, human_connection.to(),
+                              current_map_name);
+    }
+
+    if (human_connection.has_door()) {
+      auto door_identifier =
+          GetCompleteDoorIdentifier(human_connection.door(), current_map_name);
+      if (door_identifier) {
+        DoorInfo& door_info = info_.doors[*door_identifier];
+        door_info.connections_referenced_by.push_back(human_connection);
+      } else {
+        // Not sure where else to store this right now.
+        std::cout
+            << "A connection used the following malformed door identifier: "
+            << human_connection.door().ShortDebugString() << std::endl;
+      }
+    }
+  }
+
+  void ProcessSingleConnection(
+      const HumanConnection& human_connection,
+      const HumanConnection::Endpoint& endpoint,
+      const std::optional<std::string>& current_map_name) {
+    if (endpoint.has_room()) {
+      auto room_identifier =
+          GetCompleteRoomIdentifier(endpoint.room(), current_map_name);
+      if (room_identifier) {
+        RoomInfo& room_info = info_.rooms[*room_identifier];
+        room_info.connections_referenced_by.push_back(human_connection);
+      } else {
+        // Not sure where else to store this right now.
+        std::cout
+            << "A connection used the following malformed room identifier: "
+            << endpoint.room().ShortDebugString() << std::endl;
+      }
+    } else if (endpoint.has_painting()) {
+      auto painting_identifier = GetCompletePaintingIdentifier(
+          endpoint.painting(), current_map_name, std::nullopt);
+      if (painting_identifier) {
+        PaintingInfo& painting_info = info_.paintings[*painting_identifier];
+        painting_info.connections_referenced_by.push_back(human_connection);
+      } else {
+        // Not sure where else to store this right now.
+        std::cout
+            << "A connection used the following malformed painting identifier: "
+            << endpoint.painting().ShortDebugString() << std::endl;
+      }
+    } else if (endpoint.has_port()) {
+      auto port_identifier = GetCompletePortIdentifier(
+          endpoint.port(), current_map_name, std::nullopt);
+      if (port_identifier) {
+        PortInfo& port_info = info_.ports[*port_identifier];
+        port_info.connections_referenced_by.push_back(human_connection);
+      } else {
+        // Not sure where else to store this right now.
+        std::cout
+            << "A connection used the following malformed port identifier: "
+            << endpoint.port().ShortDebugString() << std::endl;
+      }
+    } else if (endpoint.has_panel()) {
+      auto panel_identifier = GetCompletePanelIdentifierWithoutAnswer(
+          endpoint.panel(), current_map_name, std::nullopt);
+      if (panel_identifier) {
+        PanelInfo& panel_info = info_.panels[*panel_identifier];
+        panel_info.connections_referenced_by.push_back(human_connection);
+
+        if (endpoint.panel().has_answer()) {
+          panel_info.proxies[endpoint.panel().answer()]
+              .connections_referenced_by.push_back(human_connection);
+        }
+      }
+    }
+  }
+
+  void ProcessIdsFile(std::filesystem::path path) {
+    // Ignore this for now.
+  }
+
+  std::string mapdir_;
+  CollectedInfo& info_;
+};
+
+}  // namespace
+
+void ProcessHumanData(const std::string& mapdir, CollectedInfo& info) {
+  HumanProcessor human_processor(mapdir, info);
+  human_processor.Run();
+}
+
+}  // namespace com::fourisland::lingo2_archipelago
@@ -0,0 +1,14 @@
+#ifndef TOOLS_VALIDATOR_HUMAN_PROCESSOR_H_
+#define TOOLS_VALIDATOR_HUMAN_PROCESSOR_H_
+
+#include <string>
+
+namespace com::fourisland::lingo2_archipelago {
+
+struct CollectedInfo;
+
+void ProcessHumanData(const std::string& mapdir, CollectedInfo& info);
+
+}  // namespace com::fourisland::lingo2_archipelago
+
+#endif /* TOOLS_VALIDATOR_HUMAN_PROCESSOR_H_ */
@@ -0,0 +1,31 @@
+#include "human_processor.h"
+#include "structs.h"
+#include "validator.h"
+
+namespace com::fourisland::lingo2_archipelago {
+namespace {
+
+void Run(const std::string& mapdir) {
+  CollectedInfo info;
+
+  ProcessHumanData(mapdir, info);
+
+  ValidateCollectedInfo(info);
+}
+
+}  // namespace
+}  // namespace com::fourisland::lingo2_archipelago
+
+int main(int argc, char** argv) {
+  if (argc != 2) {
+    std::cout << "Incorrect argument count." << std::endl;
+    std::cout << "Usage: validator [path to map directory]" << std::endl;
+    return 1;
+  }
+
+  std::string mapdir = argv[1];
+
+  com::fourisland::lingo2_archipelago::Run(mapdir);
+
+  return 0;
+}
@@ -0,0 +1,97 @@
+#ifndef TOOLS_VALIDATOR_STRUCTS_H_
+#define TOOLS_VALIDATOR_STRUCTS_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "proto/human.pb.h"
+#include "util/identifiers.h"
+
+namespace com::fourisland::lingo2_archipelago {
+
+struct MalformedIdentifiers {
+  std::vector<PaintingIdentifier> paintings;
+  std::vector<PanelIdentifier> panels;
+  std::vector<KeyholderIdentifier> keyholders;
+
+  bool HasAny() const {
+    return !paintings.empty() || !panels.empty() || !keyholders.empty();
+  }
+};
+
+struct RoomInfo {
+  std::vector<HumanRoom> definitions;
+
+  std::vector<DoorIdentifier> doors_referenced_by;
+  std::vector<PanelIdentifier> panels_referenced_by;
+  std::vector<HumanConnection> connections_referenced_by;
+};
+
+struct DoorInfo {
+  std::vector<HumanDoor> definitions;
+
+  std::vector<HumanConnection> connections_referenced_by;
+  std::vector<DoorIdentifier> doors_referenced_by;
+  std::vector<PanelIdentifier> panels_referenced_by;
+  std::vector<PaintingIdentifier> paintings_referenced_by;
+  std::vector<PortIdentifier> ports_referenced_by;
+
+  MalformedIdentifiers malformed_identifiers;
+};
+
+struct PortInfo {
+  std::vector<HumanPort> definitions;
+
+  std::vector<HumanConnection> connections_referenced_by;
+};
+
+struct PaintingInfo {
+  std::vector<HumanPainting> definitions;
+
+  std::vector<HumanConnection> connections_referenced_by;
+  std::vector<DoorIdentifier> doors_referenced_by;
+};
+
+struct ProxyInfo {
+  std::vector<Proxy> definitions;
+
+  std::vector<HumanConnection> connections_referenced_by;
+  std::vector<DoorIdentifier> doors_referenced_by;
+};
+
+struct PanelInfo {
+  std::vector<HumanPanel> definitions;
+
+  std::vector<HumanConnection> connections_referenced_by;
+  std::vector<DoorIdentifier> doors_referenced_by;
+
+  std::map<std::string, ProxyInfo> proxies;
+};
+
+struct KeyholderInfo {
+  std::vector<HumanKeyholder> definitions;
+
+  std::vector<DoorIdentifier> doors_referenced_by;
+};
+
+using LetterIdentifier = std::tuple<char, bool>;
+
+struct LetterInfo {
+  std::vector<RoomIdentifier> defined_in;
+};
+
+struct CollectedInfo {
+  std::map<RoomIdentifier, RoomInfo, RoomIdentifierLess> rooms;
+  std::map<DoorIdentifier, DoorInfo, DoorIdentifierLess> doors;
+  std::map<PortIdentifier, PortInfo, PortIdentifierLess> ports;
+  std::map<PaintingIdentifier, PaintingInfo, PaintingIdentifierLess> paintings;
+  std::map<PanelIdentifier, PanelInfo, PanelIdentifierLess> panels;
+  std::map<KeyholderIdentifier, KeyholderInfo, KeyholderIdentifierLess>
+      keyholders;
+  std::map<LetterIdentifier, LetterInfo> letters;
+};
+
+}  // namespace com::fourisland::lingo2_archipelago
+
+#endif /* TOOLS_VALIDATOR_STRUCTS_H_ */
@@ -0,0 +1,250 @@
+#include "validator.h"
+
+#include <iostream>
+
+#include "proto/human.pb.h"
+#include "structs.h"
+#include "util/identifiers.h"
+
+namespace com::fourisland::lingo2_archipelago {
+namespace {
+
+void ValidateRoom(const RoomIdentifier& room_identifier,
+                  const RoomInfo& room_info) {
+  if (room_info.definitions.empty()) {
+    std::cout << "Room " << room_identifier.ShortDebugString()
+              << " has no definition, but was referenced:" << std::endl;
+
+    for (const DoorIdentifier& door_identifier :
+         room_info.doors_referenced_by) {
+      std::cout << "    DOOR " << door_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const PanelIdentifier& panel_identifier :
+         room_info.panels_referenced_by) {
+      std::cout << "    PANEL " << panel_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const HumanConnection& connection :
+         room_info.connections_referenced_by) {
+      std::cout << "    CONNECTION " << connection.ShortDebugString()
+                << std::endl;
+    }
+  } else if (room_info.definitions.size() > 1) {
+    std::cout << "Room " << room_identifier.ShortDebugString()
+              << " was defined multiple times." << std::endl;
+  }
+}
+
+void ValidateDoor(const DoorIdentifier& door_identifier,
+                  const DoorInfo& door_info) {
+  if (door_info.definitions.empty()) {
+    std::cout << "Door " << door_identifier.ShortDebugString()
+              << " has no definition, but was referenced:" << std::endl;
+
+    for (const DoorIdentifier& other_door_identifier :
+         door_info.doors_referenced_by) {
+      std::cout << "    DOOR " << other_door_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const PanelIdentifier& panel_identifier :
+         door_info.panels_referenced_by) {
+      std::cout << "    PANEL " << panel_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const PaintingIdentifier& painting_identifier :
+         door_info.paintings_referenced_by) {
+      std::cout << "    PAINTING " << painting_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const PortIdentifier& port_identifier :
+         door_info.ports_referenced_by) {
+      std::cout << "    PORT " << port_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const HumanConnection& connection :
+         door_info.connections_referenced_by) {
+      std::cout << "    CONNECTION " << connection.ShortDebugString()
+                << std::endl;
+    }
+  } else if (door_info.definitions.size() > 1) {
+    std::cout << "Door " << door_identifier.ShortDebugString()
+              << " was defined multiple times." << std::endl;
+  }
+
+  if (door_info.malformed_identifiers.HasAny()) {
+    std::cout << "Door " << door_identifier.ShortDebugString()
+              << " has malformed identifiers:" << std::endl;
+
+    for (const PaintingIdentifier& painting_identifier :
+         door_info.malformed_identifiers.paintings) {
+      std::cout << "    PAINTING " << painting_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const PanelIdentifier& panel_identifier :
+         door_info.malformed_identifiers.panels) {
+      std::cout << "    PANEL " << panel_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const KeyholderIdentifier& keyholder_identifier :
+         door_info.malformed_identifiers.keyholders) {
+      std::cout << "    KEYHOLDER " << keyholder_identifier.ShortDebugString()
+                << std::endl;
+    }
+  }
+}
+
+void ValidatePort(const PortIdentifier& port_identifier,
+                  const PortInfo& port_info) {
+  if (port_info.definitions.empty()) {
+    std::cout << "Port " << port_identifier.ShortDebugString()
+              << " has no definition, but was referenced:" << std::endl;
+
+    for (const HumanConnection& connection :
+         port_info.connections_referenced_by) {
+      std::cout << "    CONNECTION " << connection.ShortDebugString()
+                << std::endl;
+    }
+  } else if (port_info.definitions.size() > 1) {
+    std::cout << "Port " << port_identifier.ShortDebugString()
+              << " was defined multiple times." << std::endl;
+  }
+}
+
+void ValidatePainting(const PaintingIdentifier& painting_identifier,
+                      const PaintingInfo& painting_info) {
+  if (painting_info.definitions.empty()) {
+    std::cout << "Painting " << painting_identifier.ShortDebugString()
+              << " has no definition, but was referenced:" << std::endl;
+
+    for (const DoorIdentifier& door_identifier :
+         painting_info.doors_referenced_by) {
+      std::cout << "    DOOR " << door_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const HumanConnection& connection :
+         painting_info.connections_referenced_by) {
+      std::cout << "    CONNECTION " << connection.ShortDebugString()
+                << std::endl;
+    }
+  } else if (painting_info.definitions.size() > 1) {
+    std::cout << "Painting " << painting_identifier.ShortDebugString()
+              << " was defined multiple times." << std::endl;
+  }
+}
+
+void ValidatePanel(const PanelIdentifier& panel_identifier,
+                   const PanelInfo& panel_info) {
+  if (panel_info.definitions.empty()) {
+    std::cout << "Panel " << panel_identifier.ShortDebugString()
+              << " has no definition, but was referenced:" << std::endl;
+
+    for (const DoorIdentifier& door_identifier :
+         panel_info.doors_referenced_by) {
+      std::cout << "    DOOR " << door_identifier.ShortDebugString()
+                << std::endl;
+    }
+
+    for (const HumanConnection& connection :
+         panel_info.connections_referenced_by) {
+      std::cout << "    CONNECTION " << connection.ShortDebugString()
+                << std::endl;
+    }
+  } else if (panel_info.definitions.size() > 1) {
+    std::cout << "Panel " << panel_identifier.ShortDebugString()
+              << " was defined multiple times." << std::endl;
+  }
+
+  for (const auto& [answer, proxy_info] : panel_info.proxies) {
+    if (proxy_info.definitions.empty()) {
+      std::cout << "Panel " << panel_identifier.ShortDebugString()
+                << " with answer \"" << answer
+                << "\" has no definition, but was referenced:" << std::endl;
+
+      for (const DoorIdentifier& door_identifier :
+           proxy_info.doors_referenced_by) {
+        std::cout << "    DOOR " << door_identifier.ShortDebugString()
+                  << std::endl;
+      }
+
+      for (const HumanConnection& connection :
+           proxy_info.connections_referenced_by) {
+        std::cout << "    CONNECTION " << connection.ShortDebugString()
+                  << std::endl;
+      }
+    } else if (proxy_info.definitions.size() > 1) {
+      std::cout << "Panel " << panel_identifier.ShortDebugString()
+                << " with answer \"" << answer
+                << "\" was defined multiple times." << std::endl;
+    }
+  }
+}
+
+void ValidateKeyholder(const KeyholderIdentifier& keyholder_identifier,
+                       const KeyholderInfo& keyholder_info) {
+  if (keyholder_info.definitions.empty()) {
+    std::cout << "Keyholder " << keyholder_identifier.ShortDebugString()
+              << " has no definition, but was referenced:" << std::endl;
+
+    for (const DoorIdentifier& door_identifier :
+         keyholder_info.doors_referenced_by) {
+      std::cout << "    DOOR " << door_identifier.ShortDebugString()
+                << std::endl;
+    }
+  } else if (keyholder_info.definitions.size() > 1) {
+    std::cout << "Keyholder " << keyholder_identifier.ShortDebugString()
+              << " was defined multiple times." << std::endl;
+  }
+}
+
+void ValidateLetter(const LetterIdentifier& letter_identifier,
+                    const LetterInfo& letter_info) {
+  std::string letter_name = std::string(1, std::get<0>(letter_identifier)) +
+                            (std::get<1>(letter_identifier) ? "2" : "1");
+
+  if (letter_info.defined_in.size() > 1) {
+    std::cout << "Letter " << letter_name
+              << " was defined in multiple places:" << std::endl;
+
+    for (const RoomIdentifier& room_identifier : letter_info.defined_in) {
+      std::cout << "    " << room_identifier.ShortDebugString() << std::endl;
+    }
+  }
+}
+
+}  // namespace
+
+void ValidateCollectedInfo(const CollectedInfo& info) {
+  for (const auto& [room_identifier, room_info] : info.rooms) {
+    ValidateRoom(room_identifier, room_info);
+  }
+  for (const auto& [door_identifier, door_info] : info.doors) {
+    ValidateDoor(door_identifier, door_info);
+  }
+  for (const auto& [port_identifier, port_info] : info.ports) {
+    ValidatePort(port_identifier, port_info);
+  }
+  for (const auto& [painting_identifier, painting_info] : info.paintings) {
+    ValidatePainting(painting_identifier, painting_info);
+  }
+  for (const auto& [panel_identifier, panel_info] : info.panels) {
+    ValidatePanel(panel_identifier, panel_info);
+  }
+  for (const auto& [keyholder_identifier, keyholder_info] : info.keyholders) {
+    ValidateKeyholder(keyholder_identifier, keyholder_info);
+  }
+  for (const auto& [letter_identifier, letter_info] : info.letters) {
+    ValidateLetter(letter_identifier, letter_info);
+  }
+}
+
+}  // namespace com::fourisland::lingo2_archipelago
@@ -0,0 +1,12 @@
+#ifndef TOOLS_VALIDATOR_VALIDATOR_H_
+#define TOOLS_VALIDATOR_VALIDATOR_H
+
+namespace com::fourisland::lingo2_archipelago {
+
+struct CollectedInfo;
+
+void ValidateCollectedInfo(const CollectedInfo& info);
+
+}  // namespace com::fourisland::lingo2_archipelago
+
+#endif /* TOOLS_VALIDATOR_VALIDATOR_H */