support config in node_or

[protos/libecoli.git] / lib / ecoli_assert.h

diff --git a/lib/ecoli_assert.h b/lib/ecoli_assert.h
index f0eb9be..fcd2186 100644 (file)
--- a/lib/ecoli_assert.h
+++ b/lib/ecoli_assert.h
@@ -1,35 +1,12 @@
-/*
- * Copyright (c) 2016, Olivier MATZ <zer0@droids-corp.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * Neither the name of the University of California, Berkeley nor the
- *       names of its contributors may be used to endorse or promote products
- *       derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2016, Olivier MATZ <zer0@droids-corp.org>
  */
 
 /**
  * Assert API
  *
- * Helpers to check at runtime if a condition is true, and abort
- * (exit) otherwise.
+ * Helpers to check at runtime if a condition is true, or otherwise
+ * either abort (exit program) or return an error.
  */
 
 #ifndef ECOLI_ASSERT_
@@ -55,4 +32,24 @@
 void __ec_assert_print(bool expr, const char *expr_str,
                const char *format, ...);
 
+/**
+ * Check a condition or return.
+ *
+ * If the condition is true, do nothing. If it is false, set
+ * errno and return the specified value.
+ *
+ * @param cond
+ *   The condition to test.
+ * @param ret
+ *   The value to return.
+ * @param err
+ *   The errno to set.
+ */
+#define EC_CHECK_ARG(cond, ret, err) do {                              \
+               if (!(cond)) {                                          \
+                       errno = err;                                    \
+                       return ret;                                     \
+               }                                                       \
+       } while(0)
+
 #endif