Added exception type that automatically captures stacktrace and "parent" exception when constructed.

source/mijin/util/exception.hpp

@@ -6,6 +6,8 @@
 
 #include <stdexcept>
 
+#include "../debug/stacktrace.hpp"
+
 namespace mijin
 {
 
@@ -13,6 +15,26 @@ namespace mijin
 // public defines
 //
 
+//
+// public types
+//
+
+class Exception : public std::runtime_error
+{
+private:
+    Result<Stacktrace> stacktrace_;
+    std::exception_ptr cause_;
+public:
+    Exception(const std::string& what) : std::runtime_error(what), stacktrace_(captureStacktrace(1)), cause_(std::current_exception()) {}
+    Exception(const char* what) : Exception(std::string(what)) {}
+
+    [[nodiscard]]
+    const Result<Stacktrace>& getStacktrace() const noexcept { return stacktrace_; }
+
+    [[nodiscard]]
+    const std::exception_ptr& getCause() const noexcept { return cause_; }
+};
+
 //
 // public functions
 //