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https://github.com/DarkflameUniverse/DarkflameServer.git
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117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
#pragma once
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#include <filesystem>
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#include <functional>
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#include <cstdint>
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#include <unordered_map>
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#include <unordered_set>
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namespace nejlika {
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typedef std::string name;
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typedef int id;
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/**
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* @brief A one-way mapping between symbols (names) and their corresponding numerical values.
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*
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* This is an active lookup, meaning that it is possible to add new symbols and their values to the lookup.
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*
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* A method is provided to wait for a symbol to be added to the lookup.
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*/
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class Lookup
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{
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public:
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inline static const name core_prefix = "lego-universe";
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/**
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* @brief Constructs a Lookup object with the specified lookup file path.
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*
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* @param lookup The path to the lookup file.
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* @throw If the lookup file could not be parsed.
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*/
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Lookup(const std::filesystem::path& lookup);
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Lookup(const Lookup& other);
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Lookup() = default;
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/**
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* @brief Gets the value of the specified symbol.
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*
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* @param symbol The symbol to get the value of.
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* @return The value of the specified symbol.
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* @throw If the specified symbol does not exist.
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*/
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id GetValue(const name& symbol) const;
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/**
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* @brief Checks whether the specified symbol exists.
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*
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* @param symbol The symbol to check.
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* @return Whether the specified symbol exists.
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*/
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bool Exists(const name& symbol) const;
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/**
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* @brief Checks whether any symbol has the specified value.
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*
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* @param value The value to check.
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* @return Whether any symbol has the specified value.
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*/
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bool Exists(id value) const;
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/**
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* @brief Gets the metadata of a specified symbol.
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*
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* @param symbol The symbol to get metadata of.
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* @return The metadata of the specified symbol or an empty string if the symbol does not exist.
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*/
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const std::string& GetMetadata(const name& symbol) const;
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/**
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* @brief Gets the path to the lookup file.
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*
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* @return The path to the lookup file.
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*/
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const std::filesystem::path& GetLookup() const;
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/**
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* @brief Gets the map of all symbols and their values.
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*
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* @return The map of all symbols and their values.
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*/
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const std::unordered_map<name, id>& GetMap() const;
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/**
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* @brief Checks whether the specified symbol is a core symbol.
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*
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* @param symbol The symbol to check.
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* @param value The value of the core symbol.
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* @return Whether the specified symbol is a core symbol.
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*/
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bool IsCoreSymbol(const name& symbol, id& value) const;
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/**
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* @brief Checks whether the specified symbol is a core symbol.
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*
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* A symbol is considered a core symbol if it is either:
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* a number;
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* or a string starting with the core_prefix.
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*
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* @param symbol The symbol to check.
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* @return Whether the specified symbol is a core symbol.
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*/
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static bool IsCoreSymbol(const name& symbol);
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private:
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std::filesystem::path m_Lookup;
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std::unordered_map<name, id> m_LookupMap;
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std::unordered_map<name, std::string> m_Metadata;
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std::unordered_map<name, id> m_CoreSymbols;
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};
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} // namespace nejlika
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