Add headers, clang-format, decompctx.py & more

Former-commit-id: 53f8d3cba7

include/rstl/single_ptr.hpp

@@ -0,0 +1,24 @@
+#ifndef _RSTL_SINGLE_PTR_HPP
+#define _RSTL_SINGLE_PTR_HPP
+
+#include "types.h"
+
+namespace rstl {
+template < typename T >
+class single_ptr {
+  T* x0_ptr;
+
+public:
+  single_ptr() : x0_ptr(nullptr) {}
+  single_ptr(T* ptr) : x0_ptr(ptr) {}
+  ~single_ptr() { delete x0_ptr; }
+  T* get() { return x0_ptr; }
+  T* operator->() { return x0_ptr; }
+  void operator=(T* ptr) {
+    delete x0_ptr;
+    x0_ptr = ptr;
+  }
+};
+} // namespace rstl
+
+#endif