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96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
#ifndef NETGEN_CORE_EXCEPTION_HPP
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#define NETGEN_CORE_EXCEPTION_HPP
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#include <sstream> // for stringstream
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#include <stdexcept> // for exception
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#include <string> // for string
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#include "ngcore_api.hpp" // for NGCORE_API
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namespace ngcore
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{
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NGCORE_API std::string GetBackTrace();
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// Exception for code that shouldn't be executed
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class NGCORE_API UnreachableCodeException : public std::exception
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{
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const char* what() const noexcept override
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{
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return "Shouldn't get here, something went wrong!";
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}
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};
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// Default exception class
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class NGCORE_API Exception : public std::exception
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{
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/// a verbal description of the exception
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std::string m_what;
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public:
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Exception() = default;
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Exception(const Exception&) = default;
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Exception(Exception&&) = default;
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Exception(const std::string& s) : m_what(s) {}
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Exception(const char* s) : m_what(s) {}
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~Exception() override = default;
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Exception& operator =(const Exception&) = default;
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Exception& operator =(Exception&&) noexcept = default;
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/// append string to description
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Exception & Append (const std::string & s) { m_what += s; return *this; }
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/// append string to description
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Exception & Append (const char * s) { m_what += s; return *this; }
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/// verbal description of exception
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const std::string & What() const { return m_what; }
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/// implement virtual function of std::exception
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const char* what() const noexcept override { return m_what.c_str(); }
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};
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// Out of Range exception
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class NGCORE_API RangeException : public Exception
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{
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public:
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/// where it occurs, index, minimal and maximal indices
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RangeException (const std::string & where,
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int ind, int imin, int imax) : Exception("")
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{
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std::stringstream str;
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str << where << ": index " << ind << " out of range [" << imin << "," << imax << ")\n";
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Append (str.str());
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Append (GetBackTrace());
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}
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template<typename T>
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RangeException(const std::string& where, const T& value)
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{
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std::stringstream str;
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str << where << " called with wrong value " << value << "\n";
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Append(str.str());
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}
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};
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// Exception used if no simd implementation is available to fall back to standard evaluation
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class NGCORE_API ExceptionNOSIMD : public Exception
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{ public: using Exception::Exception; };
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} // namespace ngcore
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#define NETGEN_CORE_NGEXEPTION_STR_HELPER(x) #x
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#define NETGEN_CORE_NGEXEPTION_STR(x) NETGEN_CORE_NGEXEPTION_STR_HELPER(x)
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// Convenience macro to append file name and line of exception origin to the string
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#define NG_EXCEPTION(s) ngcore::Exception(__FILE__ ":" NETGEN_CORE_NGEXEPTION_STR(__LINE__) "\t"+std::string(s))
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#ifdef NETGEN_ENABLE_CHECK_RANGE
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#define NETGEN_CHECK_RANGE(value, min, max_plus_one) \
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{ if ((value)<(min) || (value)>=(max_plus_one)) \
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throw ngcore::RangeException(__FILE__ ":" NETGEN_CORE_NGEXEPTION_STR(__LINE__) "\t", (value), (min), (max_plus_one)); }
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#else // NETGEN_ENABLE_CHECK_RANGE
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#define NETGEN_CHECK_RANGE(value, min, max)
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#endif // NETGEN_ENABLE_CHECK_RANGE
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#endif // NETGEN_CORE_EXCEPTION_HPP
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