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[lyx.git] / src / support / strfwd.h

diff --git a/src/support/strfwd.h b/src/support/strfwd.h
index ed22874c7dc14b7e8fe309fabe5f8c1a45e79a31..58b44f59b3cd09effa4e639ab22b62061855f12e 100644 (file)
--- a/src/support/strfwd.h
+++ b/src/support/strfwd.h
@@ -23,46 +23,91 @@ namespace lyx { typedef wchar_t char_type; }
 
 #else
 
+#if defined(_MSC_VER) && (_MSC_VER >= 1600)
+#include <cstdint>
+namespace lyx { typedef uint32_t char_type; }
+#include "support/numpunct_lyx_char_type.h" // implementation for our char_type needed
+#else
 #include <boost/cstdint.hpp>
 namespace lyx { typedef boost::uint32_t char_type; }
+#endif
 
 #endif
 
+// Forward definitions do not work with libc++
+// For gcc5 with the new std::string ABI forward declarations would work in
+// principle, but I am not sure whether we want non-standard
+// "namespace __cxx11" in our sources.
+#if defined(USE_LLVM_LIBCPP) || defined(USE_GLIBCXX_CXX11_ABI)
+#include <string>
+#else
 
 namespace std {
 
+template<typename Alloc> class allocator;
+
 template<typename Char> struct char_traits;
 template<> struct char_traits<char>;
+#ifdef USE_WCHAR_T
 template<> struct char_traits<wchar_t>;
-
-template<typename Alloc> class allocator;
+#endif
 
 template<typename Char, typename Traits, typename Alloc> class basic_string;
-
 typedef basic_string<char, char_traits<char>, allocator<char> > string;
 
 template<class Char, class Traits> class basic_istream;
 template<class Char, class Traits> class basic_ostream;
+template<class Char, class Traits, class Allocator> class basic_ostringstream;
 
 typedef basic_istream<char, char_traits<char> > istream;
 typedef basic_ostream<char, char_traits<char> > ostream;
+typedef basic_ostringstream<char, char_traits<char>, allocator<char> > ostringstream;
+
+} // namepace std
+
+#endif
+
+
 
-}
 
 
 namespace lyx {
 
+/**
+ * String type for storing the main text in UCS4 encoding.
+ * Use std::string only in cases 7-bit ASCII is to be manipulated
+ * within the variable.
+ */
 typedef std::basic_string<char_type, std::char_traits<char_type>,
        std::allocator<char_type> > docstring;
 
 /// Base class for UCS4 input streams
-typedef std::basic_istream<char_type, std::char_traits<char_type> >
-       idocstream;
+typedef std::basic_istream<char_type, std::char_traits<char_type> > idocstream;
 
 /// Base class for UCS4 output streams
-typedef std::basic_ostream<char_type, std::char_traits<char_type> >
-       odocstream;
+typedef std::basic_ostream<char_type, std::char_traits<char_type> > odocstream;
+
+/// UCS4 output stringstream
+typedef std::basic_ostringstream<char_type, std::char_traits<char_type>, std::allocator<char_type> > odocstringstream;
 
+#if ! defined(USE_WCHAR_T)
+extern odocstream & operator<<(odocstream &, char);
+#endif
+
+// defined in lstrings.cpp
+docstring const & empty_docstring();
+std::string const & empty_string();
+// defined in docstring.cpp
+bool operator==(docstring const &, char const *);
+
+#ifdef STD_STRING_USES_COW
+template<typename Char> class trivial_string;
+typedef trivial_string<char> trivstring;
+typedef trivial_string<char_type> trivdocstring;
+#else
+typedef std::string trivstring;
+typedef docstring trivdocstring;
+#endif
 
 } // namespace lyx