laError.h

/*

Jump'n'Run Engine
http://www.atanaslaskov.com/jnr/

BSD LICENSE
Copyright (c) 2007-2013, Atanas Laskov
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. 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.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 ATANAS LASKOV 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.

*/
#ifndef M_ERROR
#define M_ERROR



//

#define M_ERROR_STRING_LEN 512

//Generic error class
class laError
{
protected:
    //Textual description
    char    _strText[M_ERROR_STRING_LEN];

public:
    //Construct an error with formatted text
    laError() { _strText[0] = '\0'; }
    laError(char* strFormat, ...);

    //Discard error
    ~laError(void) {};

    //Extract the description of a thrown error
    char* getText() { return _strText; }
};

// Failed ASSERT statement
//
class laError_Assert: public laError
{
public:
    //Construct an error with formatted text
    laError_Assert(char* strFunction, char* strFile, int nLine,
        char* strFormat, ...);
};


// Assert expressions
//
#define M_MODE_ASSERT

#ifdef M_MODE_ASSERT
#define ASSERT(condition, str_why, ...)     if( !(condition) ) throw laError_Assert(__FUNCTION__, __FILE__, __LINE__, (str_why), __VA_ARGS__)
#define ERRORLEVEL_BEGIN int _narg_=0; try{
#define ERRORLEVEL_END   } \
    catch(laError& err) { throw laError("-->> in %s(%d): \n%s", __FUNCTION__, _narg_, err.getText()); } \
    catch(...) { throw laError("-->> (unknown error) in %s(%d)", __FUNCTION__, _narg_); }
#define ERRORLEVEL_ARG(val) _narg_ = (val)
#define ERRORLEVEL_ARGVAL _narg_
#else
#define ASSERT(condition, str_why, ...)
#define ERRORLEVEL_BEGIN
#define ERRORLEVEL_END
#define ERRORLEVEL_ARG(val)
#define ERRORLEVEL_ARGVAL 0
#endif

//Calculational error class
//
class laError_Calc: public laError
{
public:
    laError_Calc(): laError("Calculational Error") {};
};

class laError_PropertyNotDefined: public laError
{
public:
    laError_PropertyNotDefined(std::string name): laError("Property '%s' not defined.", name.c_str()) {};
};
#endif