93 lines
3.4 KiB
C++
93 lines
3.4 KiB
C++
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#ifndef PKMNLIB_WEBASSEMBLYSCRIPTRESOLVER_HPP
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#define PKMNLIB_WEBASSEMBLYSCRIPTRESOLVER_HPP
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#include <Arbutils/Collections/Dictionary.hpp>
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#include <optional>
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#include <utility>
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#include <wasm.h>
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#include "../../Battling/Library/ScriptResolver.hpp"
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#include "WebAssemblyBattleScript.hpp"
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#include "WebAssemblyFunctionCall.hpp"
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#include "WebAssemblyScriptCapabilities.hpp"
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class WebAssemblyScriptResolver : public PkmnLib::Battling::ScriptResolver {
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public:
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WebAssemblyScriptResolver();
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~WebAssemblyScriptResolver();
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u8 LoadWasmFromFile(const std::string& path);
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u8 LoadWasmFromBytes(std::vector<u8>);
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u8 LoadWatFromString(const std::string& data);
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void RegisterFunction();
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void Finalize();
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template <u32 argsCount, u32 returnsCount>
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inline std::optional<WebAssemblyFunctionCall<argsCount, returnsCount>>
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GetFunction(const ArbUt::StringView& name) const {
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auto res = _exportedFunctions.TryGet(name);
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if (!res.has_value()) {
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return {};
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}
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return std::make_optional<WebAssemblyFunctionCall<argsCount, returnsCount>>(
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ArbUt::BorrowedPtr<wasm_func_t>(res.value()));
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}
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std::pair<u8*, i32> AllocateMemory(u32 size, u32 align) const {
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auto funcOpt = GetFunction<2, 1>("allocate_mem");
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auto& func = funcOpt.value();
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func.Loadi32(0, size);
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func.Loadi32(1, align);
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func.Call();
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auto memoryOffset = func.GetResultAsi32();
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return std::make_pair(reinterpret_cast<u8*>(wasm_memory_data(_memory) + memoryOffset), memoryOffset);
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}
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[[nodiscard]] inline wasm_memory_t* GetMemory() const noexcept { return _memory; }
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CreatureLib::Battling::BattleScript* LoadScript(const ArbUt::OptionalBorrowedPtr<void>& owner,
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ScriptCategory category,
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const ArbUt::StringView& scriptName) nullable override;
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[[nodiscard]] inline wasm_store_t* GetStore() const noexcept { return _store; }
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inline void RemoveRegisteredScript(i32 wasmPtr) { _loadedScripts.Remove(wasmPtr); }
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template <typename T>
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inline void MarkLoadedPointer(T* ptr){
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_loadedPointers.Set((void*)ptr, typeid(T));
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}
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template <typename T>
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inline bool ValidateLoadedPointer(void* ptr){
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const auto& opt = _loadedPointers.TryGet(ptr);
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return opt.has_value() && opt.value() == typeid(T);
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}
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private:
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wasm_engine_t* _engine;
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wasm_store_t* _store;
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wasm_module_t* _module = nullptr;
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wasm_instance_t* _instance = nullptr;
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wasm_memory_t* _memory = nullptr;
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ArbUt::Dictionary<std::string, wasm_func_t*> _imports;
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wasm_extern_vec_t _exports = {0, nullptr};
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ArbUt::Dictionary<ArbUt::StringView, wasm_func_t*> _exportedFunctions;
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ArbUt::Dictionary<i32, WebAssemblyBattleScript*> _loadedScripts;
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void RegisterDefaultMethods();
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typedef std::pair<ScriptCategory, ArbUt::StringView> scriptCapabilitiesKey;
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struct pair_hash {
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template <class T1, class T2> std::size_t operator()(const std::pair<T1, T2>& pair) const {
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return std::hash<T1>()(pair.first) ^ std::hash<T2>()(pair.second);
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}
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};
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std::unordered_map<scriptCapabilitiesKey, std::unordered_set<WebAssemblyScriptCapabilities>, pair_hash>
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_scriptCapabilities;
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ArbUt::Dictionary<void*, std::type_info> _loadedPointers;
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};
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#endif // PKMNLIB_WEBASSEMBLYSCRIPTRESOLVER_HPP
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