67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2014 Daniel Marjamäki and Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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//---------------------------------------------------------------------------
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#ifndef cxx11emuH
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#define cxx11emuH
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//---------------------------------------------------------------------------
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/* Emulate certain features of C++11 in a C++98-compatible way. */
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#ifdef __cplusplus
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#if __cplusplus < 201103L
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// Null pointer literal
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// Source: SC22/WG21/N2431 = J16/07-0301
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf
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const // this is a const object...
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class {
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public:
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template<class T> // convertible to any type
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operator T*() const { // of null non-member
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return 0; // pointer...
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}
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template<class C, class T> // or any type of null
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operator T C::*() const { // member pointer...
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return 0;
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}
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private:
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void operator&() const; // whose address can't be taken
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} cppcheck_nullptr_impl = {}; // and whose name is nullptr
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// An evil workaround for the inability to disable -Wc++0x-compat using a #pragma.
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// Once -std=c++0x is embraced, the above class can be renamed to nullptr and
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// the define can be removed.
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#define nullptr cppcheck_nullptr_impl
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// Static assertions
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#ifndef static_assert
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#define XXJOIN(x, y) XXJOIN_AGAIN(x, y)
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#define XXJOIN_AGAIN(x, y) x ## y
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#define static_assert(e, msg) \
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typedef char XXJOIN(assertion_failed_at_line_, __LINE__) [(e) ? 1 : -1]
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#endif // static_assert
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#endif // __cplusplus < 201103L
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#endif // __cplusplus
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//---------------------------------------------------------------------------
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#endif // cxx11emuH
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