From 4af500cb5bd2a3ab6745e6c049272be5d6825c18 Mon Sep 17 00:00:00 2001
From: Wunkolo <Wunkolo@gmail.com>
Date: Wed, 20 Sep 2023 10:06:30 -0700
Subject: [PATCH] oaknut: Add `ptr` accessor to `Label`

Accesses the underlying `m_addr` for a `Label`. Allows client code to
derive the actual memory location of a `Label`. Also adds `is_bound` to
ensure the Label has an actual address.
---
 include/oaknut/oaknut.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/oaknut/oaknut.hpp b/include/oaknut/oaknut.hpp
index 29bd15f..63bb42c 100644
--- a/include/oaknut/oaknut.hpp
+++ b/include/oaknut/oaknut.hpp
@@ -53,6 +53,18 @@ struct Label {
 public:
     Label() = default;
 
+    bool is_bound() const
+    {
+        return m_addr.has_value();
+    }
+
+    template<typename T>
+    T ptr() const
+    {
+        static_assert(std::is_pointer_v<T> || std::is_same_v<T, std::uintptr_t> || std::is_same_v<T, std::intptr_t>);
+        return reinterpret_cast<T>(m_addr.value());
+    }
+
 private:
     template<typename Policy>
     friend class BasicCodeGenerator;