From 5e00350a9373056ca32f9cfb03c2f0e0e4acf385 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sat, 4 May 2024 15:50:13 +0200
Subject: a w

---
 compat/borrowed-ptr.hpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'compat/borrowed-ptr.hpp')

diff --git a/compat/borrowed-ptr.hpp b/compat/borrowed-ptr.hpp
index 872902a2..d3feee2f 100644
--- a/compat/borrowed-ptr.hpp
+++ b/compat/borrowed-ptr.hpp
@@ -1,11 +1,35 @@
 #pragma once
 #include "borrowed-ptr-fwd.hpp"
+#include "borrowed-ptr.inl"
+
+#define FM_BPTR_DEBUG
+#ifdef FM_BPTR_DEBUG
+#include "compat/assert.hpp"
+#define fm_bptr_assert(...) fm_debug_assert(__VA_ARGS__)
+#else
+#define fm_bptr_assert(...) void()
+#endif
+
+namespace floormat::detail_borrowed_ptr {
+
+//static_assert(std::is_same_v<T, U> || std::has_virtual_destructor_v<T> && std::has_virtual_destructor_v<T>); // todo! for simple_bptr
+
+template<typename From, typename To>
+concept StaticCastable = requires(From* from) {
+    static_cast<To*>(from);
+};
+
+} // namespace floormat::detail_borrowed_ptr
 
 namespace floormat {
 
 template<typename T> constexpr bptr<T>::bptr(std::nullptr_t) noexcept: ptr{nullptr}, blk{nullptr} {}
 template<typename T> constexpr bptr<T>::bptr() noexcept: bptr{nullptr} {}
 
+template<typename T> constexpr T* bptr<T>::get() const noexcept { return ptr; }
+template<typename T> constexpr T& bptr<T>::operator*() const noexcept { fm_debug_assert(ptr); return *ptr; }
+template<typename T> constexpr T* bptr<T>::operator->() const noexcept { fm_debug_assert(ptr); return ptr; }
+
 template<typename T, typename U>
 bptr<U> static_pointer_cast(const bptr<T>& p) noexcept
 {
-- 
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