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-rw-r--r--src/crepe/util/Private.hpp33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/crepe/util/Private.hpp b/src/crepe/util/Private.hpp
new file mode 100644
index 0000000..d6ab23f
--- /dev/null
+++ b/src/crepe/util/Private.hpp
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <stdexcept>
+#include <format>
+
+#include "Private.h"
+
+namespace crepe {
+
+template <typename T, typename... Args>
+T & Private::set(Args &&... args) {
+ if (!this->empty()) this->destructor(this->instance);
+ T * instance = new T(std::forward<Args>(args)...);
+ this->instance = static_cast<void*>(instance);
+ this->destructor = [](void * instance) {
+ delete static_cast<T*>(instance);
+ };
+ this->type = typeid(T);
+ return *instance;
+}
+
+template <typename T>
+T & Private::get() {
+ using namespace std;
+ if (this->empty())
+ throw out_of_range("Private: get() called on empty object");
+ type_index requested_type = typeid(T);
+ if (this->type != requested_type)
+ throw logic_error(format("Private: get() called with [T = {}] (actual is [T = {}])", requested_type.name(), this->type.name()));
+ return *static_cast<T*>(this->instance);
+}
+
+}