From e967c93dad0fca3321e107916a897762011cc35e Mon Sep 17 00:00:00 2001
From: Bert Belder <bertbelder@gmail.com>
Date: Mon, 4 Sep 2017 07:13:27 +0200
Subject: [PATCH] error: add return_error() and return_success() helper macros

---
 src/error.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/error.h b/src/error.h
index 49af6b5..03683ea 100644
--- a/src/error.h
+++ b/src/error.h
@@ -12,4 +12,18 @@ errno_t we_map_win_error_to_errno(DWORD error);
 void we_set_win_error(DWORD error);
 void we_clear_win_error(void);
 
+#define _return_error_helper(error, value) \
+  do {                                     \
+    we_set_win_error(error);               \
+    return (value);                        \
+  } while (0)
+
+#define return_error(value, ...) _return_error_helper(__VA_ARGS__ + 0, value)
+
+#define return_success(value) \
+  do {                        \
+    we_clear_win_error();     \
+    return (value);           \
+  } while (0)
+
 #endif /* ERROR_H_ */