130 lines
5.1 KiB
C
130 lines
5.1 KiB
C
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//
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// SPDX-License-Identifier: BSD-3-Clause
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// Copyright (c) Contributors to the OpenEXR Project.
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//
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#ifndef INCLUDED_IEXMACROS_H
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#define INCLUDED_IEXMACROS_H
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//--------------------------------------------------------------------
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//
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// Macros which make throwing exceptions more convenient
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//
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//--------------------------------------------------------------------
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#include <sstream>
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//----------------------------------------------------------------------------
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// A macro to throw exceptions whose text is assembled using stringstreams.
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//
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// Example:
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//
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// THROW (InputExc, "Syntax error in line " << line ", " << file << ".");
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//
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//----------------------------------------------------------------------------
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#include "IexExport.h"
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#include "IexForward.h"
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IEX_EXPORT void iex_debugTrap ();
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#define THROW(type, text) \
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do \
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{ \
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iex_debugTrap (); \
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std::stringstream _iex_throw_s; \
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_iex_throw_s << text; \
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throw type (_iex_throw_s); \
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} while (0)
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//----------------------------------------------------------------------------
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// Macros to add to or to replace the text of an exception.
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// The new text is assembled using stringstreams.
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//
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// Examples:
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//
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// Append to end of an exception's text:
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//
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// catch (BaseExc &e)
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// {
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// APPEND_EXC (e, " Directory " << name << " does not exist.");
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// throw;
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// }
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//
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// Replace an exception's text:
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//
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// catch (BaseExc &e)
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// {
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// REPLACE_EXC (e, "Directory " << name << " does not exist. " << e);
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// throw;
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// }
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//----------------------------------------------------------------------------
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#define APPEND_EXC(exc, text) \
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do \
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{ \
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std::stringstream _iex_append_s; \
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_iex_append_s << text; \
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exc.append (_iex_append_s); \
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} while (0)
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#define REPLACE_EXC(exc, text) \
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do \
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{ \
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std::stringstream _iex_replace_s; \
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_iex_replace_s << text; \
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exc.assign (_iex_replace_s); \
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} while (0)
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//-------------------------------------------------------------
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// A macro to throw ErrnoExc exceptions whose text is assembled
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// using stringstreams:
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//
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// Example:
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//
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// THROW_ERRNO ("Cannot open file " << name << " (%T).");
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//
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//-------------------------------------------------------------
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#define THROW_ERRNO(text) \
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do \
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{ \
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std::stringstream _iex_throw_errno_s; \
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_iex_throw_errno_s << text; \
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::IEX_NAMESPACE::throwErrnoExc (_iex_throw_errno_s.str ()); \
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} while (0)
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//-------------------------------------------------------------
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// A macro to throw exceptions if an assertion is false.
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//
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// Example:
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//
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// ASSERT (ptr != 0, NullExc, "Null pointer" );
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//
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//-------------------------------------------------------------
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#define ASSERT(assertion, type, text) \
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do \
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{ \
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if (bool (assertion) == false) { THROW (type, text); } \
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} while (0)
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//-------------------------------------------------------------
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// A macro to throw an IEX_NAMESPACE::LogicExc if an assertion is false,
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// with the text composed from the source code file, line number,
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// and assertion argument text.
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//
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// Example:
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//
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// LOGIC_ASSERT (i < n);
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//
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//-------------------------------------------------------------
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#define LOGIC_ASSERT(assertion) \
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ASSERT ( \
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assertion, \
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IEX_NAMESPACE::LogicExc, \
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__FILE__ << "(" << __LINE__ \
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<< "): logical assertion failed: " << #assertion)
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#endif
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