1 files changed, 38 insertions, 0 deletions
diff --git a/src/result.hpp b/src/result.hpp
new file mode 100644
index 0000000..fe9956b
--- /dev/null
+++ b/src/result.hpp
@@ -0,0 +1,38 @@
+//
+// Created by mfritzsc on 7/12/17.
+//
+
+#ifndef TMCAGLWM_RESULT_HPP
+#define TMCAGLWM_RESULT_HPP
+
+#include <experimental/optional>
+
+namespace wm {
+
+    using std::experimental::optional;
+    using std::experimental::nullopt;
+
+    // We only ever return a string as an error - so just parametrize
+    // this over result type T
+    template<typename T>
+    struct result {
+        char const *e;
+        optional<T> t;
+
+        bool is_ok() const { return this->t != nullopt; }
+        bool is_err() const { return this->e != nullptr; }
+
+        T unwrap() { return this->t.value(); }
+
+        char const *unwrap_err() { return this->e; }
+    };
+
+    template<typename T>
+    struct result<T> Err(char const *e) { return result<T>{e, nullopt}; }
+
+    template<typename T>
+    struct result<T> Ok(T t) { return result<T>{nullptr, t}; }
+
+} // namespace wm
+
+#endif //TMCAGLWM_RESULT_HPP