From c11a0bd2abef4c9536432664600ce6b6ed6ccbe4 Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Mon, 15 Jun 2015 01:04:48 +0300
Subject: error handling refactoring + more docs

---
 src/error.c | 41 +++++++++++++++++------------------------
 1 file changed, 17 insertions(+), 24 deletions(-)

(limited to 'src/error.c')

diff --git a/src/error.c b/src/error.c
index e52cd4d..034aa72 100644
--- a/src/error.c
+++ b/src/error.c
@@ -20,17 +20,17 @@ static const char* err_msgs[] =
     "Invalid PKCS7 padding (wrong key?)",
 };
 
-const char* aesni_strerror(AesNI_ErrorCode ec)
+const char* aesni_strerror(AesNI_StatusCode ec)
 {
     return err_msgs[ec];
 }
 
-static size_t aesni_format_error_simple(
+static size_t aesni_format_error_strerror(
     const AesNI_ErrorDetails* err_details,\
     char* dest,
     size_t dest_size)
 {
-    const AesNI_ErrorCode ec = aesni_get_error_code(err_details);
+    const AesNI_StatusCode ec = aesni_get_error_code(err_details);
     const char* const msg = aesni_strerror(ec);
 
     if (dest == NULL && dest_size == 0)
@@ -60,9 +60,9 @@ typedef size_t (*AesNI_ErrorFormatter)(const AesNI_ErrorDetails*, char*, size_t)
 
 static AesNI_ErrorFormatter err_formatters[] =
 {
-    &aesni_format_error_simple,
+    &aesni_format_error_strerror,
     &aesni_format_error_null_argument,
-    &aesni_format_error_simple,
+    &aesni_format_error_strerror,
 };
 
 size_t aesni_format_error(
@@ -75,44 +75,37 @@ size_t aesni_format_error(
     return err_formatters[err_details->ec](err_details, dest, dest_size);
 }
 
-static void aesni_make_error(
+static AesNI_StatusCode aesni_make_error(
     AesNI_ErrorDetails* err_details,
-    AesNI_ErrorCode ec)
+    AesNI_StatusCode ec)
 {
     if (err_details == NULL)
-        return;
+        return ec;
 
-    err_details->ec = ec;
+    return err_details->ec = ec;
 }
 
-void aesni_make_error_success(
+AesNI_StatusCode aesni_make_error_success(
     AesNI_ErrorDetails* err_details)
 {
-    if (err_details == NULL)
-        return;
-
-    aesni_make_error(err_details, AESNI_ERROR_SUCCESS);
+    return aesni_make_error(err_details, AESNI_SUCCESS);
 }
 
-void aesni_make_error_null_argument(
+AesNI_StatusCode aesni_make_error_null_argument(
     AesNI_ErrorDetails* err_details,
     const char* arg_name)
 {
-    if (err_details == NULL)
-        return;
-
-    aesni_make_error(err_details, AESNI_ERROR_NULL_ARGUMENT);
+    AesNI_StatusCode status = aesni_make_error(err_details, AESNI_ERROR_NULL_ARGUMENT);
 
     const size_t arg_name_size = sizeof(err_details->params.null_arg.arg_name);
     strncpy(err_details->params.null_arg.arg_name, arg_name, arg_name_size);
     err_details->params.null_arg.arg_name[arg_name_size - 1] = '\0';
+
+    return status;
 }
 
-void aesni_make_error_invalid_pkcs7_padding(
+AesNI_StatusCode aesni_make_error_invalid_pkcs7_padding(
     AesNI_ErrorDetails* err_details)
 {
-    if (err_details == NULL)
-        return;
-
-    aesni_make_error(err_details, AESNI_ERROR_INVALID_PKCS7_PADDING);
+    return aesni_make_error(err_details, AESNI_ERROR_INVALID_PKCS7_PADDING);
 }
-- 
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