From: Joel Rosdahl <joel@rosdahl.net>
Date: Sun, 3 Aug 2025 11:43:51 +0000 (+0200)
Subject: enhance: Add TRY_ASSIGN macro
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d8854a9f9f9d32d3e8d7c3fd23fb58b43ad3557;p=thirdparty%2Fccache.git

enhance: Add TRY_ASSIGN macro
---

diff --git a/src/ccache/util/expected.hpp b/src/ccache/util/expected.hpp
index e8a55372..9f79ff95 100644
--- a/src/ccache/util/expected.hpp
+++ b/src/ccache/util/expected.hpp
@@ -58,6 +58,13 @@ void throw_on_error(const T& value, std::string_view prefix);
     }                                                                          \
   } while (false)
 
+#define TRY_ASSIGN(var_, expression_)                                          \
+  auto result_##__LINE__##_ = (expression_);                                   \
+  if (!result_##__LINE__##_) {                                                 \
+    return tl::unexpected(std::move(result_##__LINE__##_.error()));            \
+  }                                                                            \
+  var_ = std::move(*result_##__LINE__##_)
+
 // --- Inline implementations ---
 
 template<typename E, typename T>