#ifndef _WX_WXSTRINGH__
#define _WX_WXSTRINGH__
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma interface "string.h"
-#endif
-
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#endif // OS/compiler
}
-#if wxUSE_STL
+// ----------------------------------------------------------------------------
+// deal with STL/non-STL/non-STL-but-wxUSE_STD_STRING
+// ----------------------------------------------------------------------------
+
+// in both cases we need to define wxStdString
+#if wxUSE_STL || defined(wxUSE_STD_STRING)
#include "wx/beforestd.h"
#include <string>
#if wxUSE_UNICODE
#ifdef HAVE_STD_WSTRING
- typedef std::wstring wxStringBase;
+ typedef std::wstring wxStdString;
#else
- typedef std::basic_string<wxChar> wxStringBase;
+ typedef std::basic_string<wxChar> wxStdString;
#endif
#else
- typedef std::string wxStringBase;
+ typedef std::string wxStdString;
#endif
-#if (defined(__GNUG__) && (__GNUG__ < 3)) || \
- (defined(_MSC_VER) && (_MSC_VER <= 1200))
- #define wxSTRING_BASE_HASNT_CLEAR
-#endif
+#endif // need <string>
+
+#if wxUSE_STL
+
+ // we don't need an extra ctor from std::string when copy ctor already does
+ // the work
+ #undef wxUSE_STD_STRING
+ #if (defined(__GNUG__) && (__GNUG__ < 3)) || \
+ (defined(_MSC_VER) && (_MSC_VER <= 1200))
+ #define wxSTRING_BASE_HASNT_CLEAR
+ #endif
+
+ typedef wxStdString wxStringBase;
#else // if !wxUSE_STL
#ifndef HAVE_STD_STRING_COMPARE
// return the character at position n
value_type at(size_type n) const
{ wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
- value_type operator[](size_type n) const { return at(n); }
// returns the writable character at position n
reference at(size_type n)
{ wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
- reference operator[](size_type n)
- { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
// lib.string.modifiers
// append elements str[pos], ..., str[pos+n]
wxString(const wxChar *psz, wxMBConv& WXUNUSED(conv), size_t nLength = npos)
: wxStringBase(psz, nLength == npos ? wxStrlen(psz) : nLength) { }
+ // even we're not build with wxUSE_STL == 1 it is very convenient to allow
+ // implicit conversions from std::string to wxString as this allows to use
+ // the same strings in non-GUI and GUI code, however we don't want to
+ // unconditionally add this ctor as it would make wx lib dependent on
+ // libstdc++ on some Linux versions which is bad, so instead we ask the
+ // client code to define this wxUSE_STD_STRING symbol if they need it
+#ifdef wxUSE_STD_STRING
+ wxString(const wxStdString& s)
+ : wxStringBase(s.c_str()) { }
+#endif // wxUSE_STD_STRING
+
#if wxUSE_UNICODE
// from multibyte string
wxString(const char *psz, wxMBConv& conv, size_t nLength = npos);
// data access (all indexes are 0 based)
// read access
wxChar GetChar(size_t n) const
- { return operator[](n); }
+ { return at(n); }
// read/write access
wxChar& GetWritableChar(size_t n)
- { return operator[](n); }
+ { return at(n); }
// write access
void SetChar(size_t n, wxChar ch)
- { operator[](n) = ch; }
+ { at(n) = ch; }
// get last character
wxChar Last() const
{
wxASSERT_MSG( !IsEmpty(), _T("wxString: index out of bounds") );
- return operator[](length() - 1);
+ return at(length() - 1);
}
// get writable last character
wxChar& Last()
{
wxASSERT_MSG( !IsEmpty(), _T("wxString: index out of bounds") );
- return operator[](length() - 1);
+ return at(length() - 1);
}
/*
- So why do we have all these overloaded operator[]s? A bit of history:
- initially there was only one of them, taking size_t. Then people
- started complaining because they wanted to use ints as indices (I
- wonder why) and compilers were giving warnings about it, so we had to
- add the operator[](int). Then it became apparent that you couldn't
- write str[0] any longer because there was ambiguity between two
- overloads and so you now had to write str[0u] (or, of course, use the
- explicit casts to either int or size_t but nobody did this).
-
- Finally, someone decided to compile wxWin on an Alpha machine and got
- a surprize: str[0u] didn't compile there because it is of type
- unsigned int and size_t is unsigned _long_ on Alpha and so there was
- ambiguity between converting uint to int or ulong. To fix this one we
- now add operator[](uint) for the machines where size_t is not already
- the same as unsigned int - hopefully this fixes the problem (for some
- time)
-
- The only real fix is, of course, to remove all versions but the one
- taking size_t...
+ Note that we we must define all of the overloads below to avoid
+ ambiguity when using str[0]. Also note that for a conforming compiler we
+ don't need const version of operatorp[] at all as indexed access to
+ const string is provided by implicit conversion to "const wxChar *"
+ below and defining them would only result in ambiguities, but some other
+ compilers refuse to compile "str[0]" without them.
*/
- // operator version of GetChar
- wxChar operator[](int n) const
- { return wxStringBase::operator[](n); }
- wxChar& operator[](size_type n)
- { return wxStringBase::operator[](n); }
+#if defined(__BORLANDC__) || defined(__WATCOMC__) || defined(__MWERKS__)
+ wxChar operator[](int n) const
+ { return wxStringBase::at(n); }
wxChar operator[](size_type n) const
- { return wxStringBase::operator[](n); }
+ { return wxStringBase::at(n); }
#ifndef wxSIZE_T_IS_UINT
- // operator version of GetChar
wxChar operator[](unsigned int n) const
- { return wxStringBase::operator[](n); }
+ { return wxStringBase::at(n); }
+#endif // size_t != unsigned int
+#endif // broken compiler
+
- // operator version of GetWriteableChar
+ // operator versions of GetWriteableChar()
+ wxChar& operator[](int n)
+ { return wxStringBase::at(n); }
+ wxChar& operator[](size_type n)
+ { return wxStringBase::at(n); }
+#ifndef wxSIZE_T_IS_UINT
wxChar& operator[](unsigned int n)
- { return wxStringBase::operator[](n); }
+ { return wxStringBase::at(n); }
#endif // size_t != unsigned int
// implicit conversion to C string
projects / wxWidgets.git / blobdiff