forked from osmocom/wireshark
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/** @file
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __WS_RETURN_H__
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#define __WS_RETURN_H__
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#include <wsutil/wslog.h>
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#include <wsutil/wmem/wmem.h>
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/*
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* These macros can be used as an alternative to ws_assert() to
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* assert some condition on function arguments. This must only be used
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* to catch programming errors, in situations where an assertion is
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* appropriate. And it should only be used if failing the condition
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* doesn't necessarily lead to an inconsistent state for the program.
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*
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* It is possible to set the fatal log level to "critical" to abort
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* execution for debugging purposes, if one of these checks fail.
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*/
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#define ws_warn_zero_len(var) ws_critical("Zero length '%s' passed to %s()", var, __func__)
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#define ws_warn_null_ptr(var) ws_critical("Null pointer '%s' passed to %s()", var, __func__)
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#define ws_return_str_if_zero(scope, len) \
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do { \
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if (!(len)) { \
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ws_warn_zero_len(#len); \
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return wmem_strdup(scope, "(zero length)"); \
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} \
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} while (0)
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#define ws_return_str_if_null(scope, ptr) \
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do { \
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if (!(ptr)) { \
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ws_warn_null_ptr(#ptr); \
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return wmem_strdup(scope, "(null pointer)"); \
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} \
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} while (0)
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#define ws_return_val_if_zero(len, val) \
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do { \
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if (!(len)) { \
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ws_warn_zero_len(#len); \
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return (val); \
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} \
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} while (0)
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#define ws_return_val_if_null(ptr, val) \
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do { \
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if (!(ptr)) { \
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ws_warn_null_ptr(#ptr); \
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return (val); \
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} \
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} while (0)
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#endif /* WS_RETURN_H_ */
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