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114 lines
4.4 KiB
C++
114 lines
4.4 KiB
C++
/*
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* IdentifierStorage.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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VCMI_LIB_NAMESPACE_BEGIN
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class JsonNode;
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/// class that stores all object identifiers strings and maps them to numeric ID's
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/// if possible, objects ID's should be in format <type>.<name>, camelCase e.g. "creature.grandElf"
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class DLL_LINKAGE CIdentifierStorage
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{
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enum class ELoadingState
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{
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LOADING,
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FINALIZING,
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FINISHED
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};
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struct ObjectCallback // entry created on ID request
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{
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std::string localScope; /// scope from which this ID was requested
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std::string remoteScope; /// scope in which this object must be found
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std::string type; /// type, e.g. creature, faction, hero, etc
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std::string name; /// string ID
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std::function<void(si32)> callback;
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bool optional;
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/// Builds callback from identifier in form "targetMod:type.name"
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static ObjectCallback fromNameWithType(const std::string & scope, const std::string & fullName, const std::function<void(si32)> & callback, bool optional);
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/// Builds callback from identifier in form "targetMod:name"
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static ObjectCallback fromNameAndType(const std::string & scope, const std::string & type, const std::string & fullName, const std::function<void(si32)> & callback, bool optional);
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private:
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ObjectCallback() = default;
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};
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struct ObjectData // entry created on ID registration
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{
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si32 id;
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std::string scope; /// scope in which this ID located
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bool operator==(const ObjectData & other) const
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{
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return id == other.id && scope == other.scope;
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}
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template <typename Handler> void serialize(Handler &h, const int version)
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{
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h & id;
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h & scope;
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}
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};
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std::multimap<std::string, ObjectData> registeredObjects;
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mutable std::vector<ObjectCallback> scheduledRequests;
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ELoadingState state = ELoadingState::LOADING;
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/// Helper method that dumps all registered identifier into log file
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void debugDumpIdentifiers();
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/// Check if identifier can be valid (camelCase, point as separator)
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static void checkIdentifier(std::string & ID);
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void requestIdentifier(ObjectCallback callback) const;
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bool resolveIdentifier(const ObjectCallback & callback) const;
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std::vector<ObjectData> getPossibleIdentifiers(const ObjectCallback & callback) const;
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public:
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CIdentifierStorage();
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virtual ~CIdentifierStorage() = default;
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/// request identifier for specific object name.
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/// Function callback will be called during ID resolution phase of loading
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void requestIdentifier(const std::string & scope, const std::string & type, const std::string & name, const std::function<void(si32)> & callback) const;
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///fullName = [remoteScope:]type.name
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void requestIdentifier(const std::string & scope, const std::string & fullName, const std::function<void(si32)> & callback) const;
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void requestIdentifier(const std::string & type, const JsonNode & name, const std::function<void(si32)> & callback) const;
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void requestIdentifier(const JsonNode & name, const std::function<void(si32)> & callback) const;
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/// try to request ID. If ID with such name won't be loaded, callback function will not be called
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void tryRequestIdentifier(const std::string & scope, const std::string & type, const std::string & name, const std::function<void(si32)> & callback) const;
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void tryRequestIdentifier(const std::string & type, const JsonNode & name, const std::function<void(si32)> & callback) const;
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/// get identifier immediately. If identifier is not know and not silent call will result in error message
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std::optional<si32> getIdentifier(const std::string & scope, const std::string & type, const std::string & name, bool silent = false) const;
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std::optional<si32> getIdentifier(const std::string & type, const JsonNode & name, bool silent = false) const;
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std::optional<si32> getIdentifier(const JsonNode & name, bool silent = false) const;
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std::optional<si32> getIdentifier(const std::string & scope, const std::string & fullName, bool silent = false) const;
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/// registers new object
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void registerObject(const std::string & scope, const std::string & type, const std::string & name, si32 identifier);
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/// called at the very end of loading to check for any missing ID's
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void finalize();
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template <typename Handler> void serialize(Handler &h, const int version)
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{
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h & registeredObjects;
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h & state;
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}
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};
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VCMI_LIB_NAMESPACE_END
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