/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
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 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
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 ************************************************************************/


#ifndef _OSL_DIAGNOSE_H_
#define _OSL_DIAGNOSE_H_

#include <sal/types.h>

/** provides simple diagnostic support

    The functions defined in this header are not intended to be used directly,
    but through defined macros. The macros can be divided into three categories:
    assertions, traces and other stuff .-) Their usability depends on the value
    of OSL_DEBUG_LEVEL macro: assertions are only active if OSL_DEBUG_LEVEL is 1
    or greater, traces if OSL_DEBUG_LEVEL is 2 or greater.

    Assertions (cond is bool, msg is char*):
    OSL_ASSERT(cond)
        If cond is false, reports an error.

    OSL_ENSURE(cond, msg)
        If cond is false, reports an error with message msg.

    OSL_FAIL(msg)
        Reports an error with message msg unconditionally.

    OSL_PRECOND(cond, msg)
    OSL_POSTCOND(cond, msg)
        These two are functionally equivalent to OSL_ENSURE(cond, msg). They are
        intended to be used for checking pre- and postconditions of functions.

    Traces:
    OSL_TRACE(fmt, args...)
        Prints trace message. The arguments have the same meaning as the
        arguments of printf.

    Other:
    OSL_VERIFY(expr)
        Evaluates the expression and if it is false, reports an error. The
        expression is evaluated once without regard of the value of
        OSL_DEBUG_LEVEL.

        Example:

        void extractBool(Any const& rAny, bool& rBool)
        {
            OSL_VERIFY(rAny >>= rBool);
        }

    OSL_DEBUG_ONLY(expr)
 */

#ifdef __cplusplus
extern "C" {
#endif  /* __cplusplus */

/* //////////////////////////////////////////////////////////////////////////
    Diagnostic support
*/

void    	SAL_CALL osl_breakDebug(void);
sal_Bool 	SAL_CALL osl_assertFailedLine(const sal_Char* pszFileName, sal_Int32 nLine, const sal_Char* pszMessage);
void    	SAL_CALL osl_trace(const sal_Char* pszFormat, ...);
sal_Int32	SAL_CALL osl_reportError(sal_uInt32 nType, const sal_Char* pszErrorMessage);

/*
    For message delivery
*/

/** a message delivery function which receives a pre-formatted message string
*/
typedef void (SAL_CALL *pfunc_osl_printDebugMessage)( const sal_Char * pszMessage );

/** a message delivery function which receives detailed information about where the message was triggered
*/
typedef void (SAL_CALL *pfunc_osl_printDetailedDebugMessage)( const sal_Char * pszFileName, sal_Int32 nLine, const sal_Char* pszMessage );

/** sets a message delivery function

    The function set here is ignored if a function for detailed message information
    (pfunc_osl_printDetailedDebugMessage) has been set.

    The given message handler must be able to cope with a <NULL/> message.
*/
pfunc_osl_printDebugMessage SAL_CALL osl_setDebugMessageFunc( pfunc_osl_printDebugMessage pNewFunc );

/** sets a delivery function for detailed message information.

    The given message handler must be able to cope with a <NULL/> message.
*/
pfunc_osl_printDetailedDebugMessage SAL_CALL osl_setDetailedDebugMessageFunc( pfunc_osl_printDetailedDebugMessage pNewFunc );

#ifdef __cplusplus
}
#endif

#define OSL_THIS_FILE       __FILE__

/* the macro OSL_TO_STRING is intended to be an office internal macro for now */
#define OSL_TO_STRING( x ) #x

/* the macro OSL_MACRO_VALUE_TO_STRING is intended to be an office internal macro for now */
#define OSL_MACRO_VALUE_TO_STRING( x ) OSL_TO_STRING( x )

/* the macro OSL_LOG_PREFIX is intended to be an office internal macro for now */
#define OSL_LOG_PREFIX OSL_THIS_FILE ":" OSL_MACRO_VALUE_TO_STRING( __LINE__ ) "; "

#define OSL_DEBUG_ONLY(s)	_OSL_DEBUG_ONLY(s)
#define OSL_TRACE           _OSL_TRACE
#define OSL_ASSERT(c) 	    _OSL_ENSURE(c, OSL_THIS_FILE, __LINE__, 0)
#define OSL_ENSURE(c, m)   _OSL_ENSURE(c, OSL_THIS_FILE, __LINE__, m)
#define OSL_FAIL(m)        _OSL_ENSURE(0, OSL_THIS_FILE, __LINE__, m)

#define OSL_VERIFY(c) do { if (!(c)) OSL_ASSERT(0); } while (0)
#define OSL_PRECOND(c, m)  	OSL_ENSURE(c, m)
#define OSL_POSTCOND(c, m) 	OSL_ENSURE(c, m)


#ifdef __cplusplus
#define _OSL_GLOBAL	::
#else
#define _OSL_GLOBAL
#endif  /* __cplusplus */

#if OSL_DEBUG_LEVEL > 0

#define _OSL_DEBUG_ONLY(f)	(f)
#define _OSL_ENSURE(c, f, l, m) \
    do \
    {  \
        if (!(c) && _OSL_GLOBAL osl_assertFailedLine(f, l, m)) \
            _OSL_GLOBAL osl_breakDebug(); \
    } while (0)

#else

#define _OSL_DEBUG_ONLY(f)			((void)0)
#define _OSL_ENSURE(c, f, l, m)	    ((void)0)

#endif /* OSL_DEBUG_LEVEL */

#if OSL_DEBUG_LEVEL > 1

#define _OSL_TRACE                  _OSL_GLOBAL osl_trace

#else

#define _OSL_TRACE                  1 ? ((void)0) : _OSL_GLOBAL osl_trace

#endif /* OSL_DEBUG_LEVEL */

/* the macro OSL_THIS_FUNC is intended to be an office internal macro for now */
/* copied from boost/current_function.hpp to make it usable from C
 * sources as well
 *
 * Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
 *
 * Distributed under the Boost Software License, Version 1.0. (See
 * accompanying file LICENSE_1_0.txt or copy at
 * http://www.boost.org/LICENSE_1_0.txt) */
#if defined(__GNUC__) || (defined(__MWERKS__) && (__MWERKS__ >= 0x3000)) || (defined(__ICC) && (__ICC >= 600))
#define OSL_THIS_FUNC __PRETTY_FUNCTION__
#elif defined(__DMC__) && (__DMC__ >= 0x810)
#define OSL_THIS_FUNC __PRETTY_FUNCTION__
#elif defined(__FUNCSIG__)
#define OSL_THIS_FUNC __FUNCSIG__
#elif (defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 600)) || (defined(__IBMCPP__) && (__IBMCPP__ >= 500))
#define OSL_THIS_FUNC __FUNCTION__
#elif defined(__BORLANDC__) && (__BORLANDC__ >= 0x550)
#define OSL_THIS_FUNC __FUNC__
#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)
#define OSL_THIS_FUNC __func__
#else
#define OSL_THIS_FUNC ""
#endif

#endif /* _OSL_DIAGNOSE_H_ */

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