mirror of
https://git.lyx.org/repos/lyx.git
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115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
// -*- C++ -*-
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// Heavily inspired by /usr/include/c++/4.1/bits
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//
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// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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#ifndef STRFWD_H
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#define STRFWD_H
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#ifdef USE_WCHAR_T
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// Prefer this if possible because GNU libstdc++ has usable
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// std::ctype<wchar_t> locale facets but not
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// std::ctype<boost::uint32_t>. gcc older than 3.4 is also missing
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// usable std::char_traits<boost::uint32_t>.
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namespace lyx { typedef wchar_t char_type; }
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#else
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#if defined(_MSC_VER) && (_MSC_VER >= 1600)
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#include <cstdint>
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namespace lyx { typedef uint32_t char_type; }
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#include "support/numpunct_lyx_char_type.h" // implementation for our char_type needed
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#else
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#include <boost/cstdint.hpp>
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namespace lyx { typedef boost::uint32_t char_type; }
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#endif
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#endif
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// Forward definitions do not work with libc++
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// For gcc5 with the new std::string ABI forward declarations would work in
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// principle, but I am not sure whether we want non-standard
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// "namespace __cxx11" in our sources.
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#if defined(USE_LLVM_LIBCPP) || defined(USE_GLIBCXX_CXX11_ABI)
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#include <string>
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#else
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namespace std {
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template<typename Alloc> class allocator;
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template<typename Char> struct char_traits;
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template<> struct char_traits<char>;
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#ifdef USE_WCHAR_T
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template<> struct char_traits<wchar_t>;
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#endif
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template<typename Char, typename Traits, typename Alloc> class basic_string;
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typedef basic_string<char, char_traits<char>, allocator<char> > string;
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template<class Char, class Traits> class basic_istream;
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template<class Char, class Traits> class basic_ostream;
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template<class Char, class Traits, class Allocator> class basic_ostringstream;
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typedef basic_istream<char, char_traits<char> > istream;
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typedef basic_ostream<char, char_traits<char> > ostream;
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typedef basic_ostringstream<char, char_traits<char>, allocator<char> > ostringstream;
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} // namepace std
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#endif
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namespace lyx {
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/**
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* String type for storing the main text in UCS4 encoding.
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* Use std::string only in cases 7-bit ASCII is to be manipulated
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* within the variable.
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*/
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typedef std::basic_string<char_type, std::char_traits<char_type>,
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std::allocator<char_type> > docstring;
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/// Base class for UCS4 input streams
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typedef std::basic_istream<char_type, std::char_traits<char_type> > idocstream;
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/// Base class for UCS4 output streams
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typedef std::basic_ostream<char_type, std::char_traits<char_type> > odocstream;
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/// UCS4 output stringstream
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typedef std::basic_ostringstream<char_type, std::char_traits<char_type>, std::allocator<char_type> > odocstringstream;
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#if ! defined(USE_WCHAR_T)
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extern odocstream & operator<<(odocstream &, char);
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#endif
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// defined in lstrings.cpp
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docstring const & empty_docstring();
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std::string const & empty_string();
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// defined in docstring.cpp
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bool operator==(docstring const &, char const *);
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#ifdef STD_STRING_USES_COW
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template<typename Char> class trivial_string;
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typedef trivial_string<char> trivstring;
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typedef trivial_string<char_type> trivdocstring;
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#else
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typedef std::string trivstring;
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typedef docstring trivdocstring;
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#endif
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} // namespace lyx
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#endif
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