From bc3e952b487365fdf5e60e9fcfa0841c23972e30 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Sat, 11 Mar 2023 07:36:11 -0500
Subject: common error enum; eval to _ev

---
 libalee/state.hpp | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

(limited to 'libalee/state.hpp')

diff --git a/libalee/state.hpp b/libalee/state.hpp
index 648b868..325f405 100644
--- a/libalee/state.hpp
+++ b/libalee/state.hpp
@@ -24,6 +24,7 @@
 
 #include <csetjmp>
 #include <cstddef>
+#include <tuple>
 
 constexpr unsigned DataStackSize = 16;
 constexpr unsigned ReturnStackSize = 16;
@@ -31,17 +32,6 @@ constexpr unsigned ReturnStackSize = 16;
 class State
 {
 public:
-    enum class Error : int {
-        none = 0,
-        push,
-        pop,
-        pushr,
-        popr,
-        top,
-        pick,
-        exit
-    };
-
     Addr ip = 0;
     Dictionary& dict;
     void (*input)(State&);
@@ -54,7 +44,11 @@ public:
     bool compiling() const;
     void compiling(bool);
 
+    std::pair<Addr, std::jmp_buf> save();
+    void load(const std::pair<Addr, std::jmp_buf>&);
+
     Error execute(Addr);
+    void reset();
 
     std::size_t size() const noexcept;
     std::size_t rsize() const noexcept;
-- 
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