Try::exception overload for Try&&

[folly.git] / folly / Try.h

diff --git a/folly/Try.h b/folly/Try.h
index fb783b010a0f9ff303332139b694423026bbb49f..6d219a738661fa40e71a705809eeec74a4ad6db5 100644 (file)
--- a/folly/Try.h
+++ b/folly/Try.h
@@ -201,20 +201,34 @@ class Try {
     return hasException() && e_.is_compatible_with<Ex>();
   }
 
-  exception_wrapper& exception() {
+  exception_wrapper& exception() & {
     if (!hasException()) {
       try_detail::throwTryDoesNotContainException();
     }
     return e_;
   }
 
-  const exception_wrapper& exception() const {
+  exception_wrapper&& exception() && {
+    if (!hasException()) {
+      try_detail::throwTryDoesNotContainException();
+    }
+    return std::move(e_);
+  }
+
+  const exception_wrapper& exception() const & {
     if (!hasException()) {
       try_detail::throwTryDoesNotContainException();
     }
     return e_;
   }
 
+  const exception_wrapper&& exception() const && {
+    if (!hasException()) {
+      try_detail::throwTryDoesNotContainException();
+    }
+    return std::move(e_);
+  }
+
   /*
    * @returns a pointer to the `std::exception` held by `*this`, if one is held;
    *          otherwise, returns `nullptr`.
@@ -370,20 +384,34 @@ class Try<void> {
    *
    * @returns mutable reference to the exception contained by this Try
    */
-  exception_wrapper& exception() {
+  exception_wrapper& exception() & {
     if (!hasException()) {
       try_detail::throwTryDoesNotContainException();
     }
     return e_;
   }
 
-  const exception_wrapper& exception() const {
+  exception_wrapper&& exception() && {
+    if (!hasException()) {
+      try_detail::throwTryDoesNotContainException();
+    }
+    return std::move(e_);
+  }
+
+  const exception_wrapper& exception() const & {
     if (!hasException()) {
       try_detail::throwTryDoesNotContainException();
     }
     return e_;
   }
 
+  const exception_wrapper&& exception() const && {
+    if (!hasException()) {
+      try_detail::throwTryDoesNotContainException();
+    }
+    return std::move(e_);
+  }
+
   /*
    * @returns a pointer to the `std::exception` held by `*this`, if one is held;
    *          otherwise, returns `nullptr`.