From: Philippe Proulx <eeppeliteloop@gmail.com>
Date: Wed, 2 Jun 2021 15:50:17 +0000 (-0400)
Subject: enum argpar_iter_next_status: assign negative integral values to errors
X-Git-Url: http://git.efficios.com/?p=argpar.git;a=commitdiff_plain;h=10197dcc488abe5287c501bc4bfc8e23f1bc2538;hp=8b95d883334b188d05cb1967980eae628e295d10;ds=sidebyside

enum argpar_iter_next_status: assign negative integral values to errors

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Change-Id: Idd77c0b08296a150b9f771d06fbaf3415e1c2cc9
---

diff --git a/argpar/argpar.h b/argpar/argpar.h
index 3cd437f..3340d90 100644
--- a/argpar/argpar.h
+++ b/argpar/argpar.h
@@ -593,6 +593,8 @@ void argpar_iter_destroy(struct argpar_iter *iter);
 /*!
 @brief
     Return type of argpar_iter_next().
+
+Error status enumerators have a negative value.
 */
 enum argpar_iter_next_status {
 	/// Success
@@ -602,16 +604,16 @@ enum argpar_iter_next_status {
 	ARGPAR_ITER_NEXT_STATUS_END,
 
 	/// Unknown option error
-	ARGPAR_ITER_NEXT_STATUS_ERROR_UNKNOWN_OPT,
+	ARGPAR_ITER_NEXT_STATUS_ERROR_UNKNOWN_OPT = -1,
 
 	/// Missing option argument error
-	ARGPAR_ITER_NEXT_STATUS_ERROR_MISSING_OPT_ARG,
+	ARGPAR_ITER_NEXT_STATUS_ERROR_MISSING_OPT_ARG = -2,
 
 	/// Unexpected option argument error
-	ARGPAR_ITER_NEXT_STATUS_ERROR_UNEXPECTED_OPT_ARG,
+	ARGPAR_ITER_NEXT_STATUS_ERROR_UNEXPECTED_OPT_ARG = -3,
 
 	/// Memory error
-	ARGPAR_ITER_NEXT_STATUS_ERROR_MEMORY,
+	ARGPAR_ITER_NEXT_STATUS_ERROR_MEMORY = -12,
 };
 
 /*!