Hi,
I am attempting to compile QtScriptGenerator (gitorious) with Visual Studio 2010 (C++) and have run into a compile error. In searching for a solution, I have seen occasional references to compile breakages introduced since VS2008 due to changes in VS2010's implementation of STL and/or c++0x conformance changes.
Any ideas what is happening below, or how I could go about fixing it? If the offending code appeared to be QtScriptGenerator's, I think I would have an easier time fixing it.. but it appears to me that the offending code may be in VS2010's STL implementation and I may be required to create a workaround?
PS. I am pretty unfamiliar with templates and STL. I have a background in embedded and console projects where such things have until recently often been avoided to reduce memory consumption and cross-compiler risks.
Edit - It appears it is probably Visual Studio's implementation of std::copy which changed.
C:\Program Files\Microsoft Visual Studio 10.0\VC\INCLUDE\xutility(275) : error C2679: binary '=' : no operator found which takes a right-hand operand of type 'rpp::pp_output_iterator<_Container>' (or there is no acceptable conversion)
with
[
_Container=std::string
]
c:\qt\qtscriptgenerator\generator\parser\rpp\pp-iterator.h(75): could be 'rpp::pp_output_iterator<_Container> &rpp::pp_output_iterator<_Container>::operator =(const char &)'
with
[
_Container=std::string
]
while trying to match the argument list '(rpp::pp_output_iterator<_Container>, rpp::pp_output_iterator<_Container>)'
with
[
_Container=std::string
]
C:\Program Files\Microsoft Visual Studio 10.0\VC\INCLUDE\xutility(2176) : see reference to function template instantiation '_Iter &std::_Rechecked<_OutIt,_OutIt>(_Iter &,_UIter)' being compiled
with
[
_Iter=rpp::pp_output_iterator<std::string>,
_OutIt=rpp::pp_output_iterator<std::string>,
_UIter=rpp::pp_output_iterator<std::string>
]
c:\qt\qtscriptgenerator\generator\parser\rpp\pp-internal.h(83) : see reference to function template instantiation '_OutIt std::copy<std::_String_iterator<_Elem,_Traits,_Alloc>,_OutputIterator>(_InIt,_InIt,_OutIt)' being compiled
with
[
_OutIt=rpp::pp_output_iterator<std::string>,
_Elem=char,
_Traits=std::char_traits<char>,
_Alloc=std::allocator<char>,
_OutputIterator=rpp::pp_output_iterator<std::string>,
_InIt=std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>
]
c:\qt\qtscriptgenerator\generator\parser\rpp\pp-engine-bits.h(500) : see reference to function template instantiation 'void rpp::_PP_internal::output_line<_OutputIterator>(const std::string &,int,_OutputIterator)' being compiled
with
[
_OutputIterator=rpp::pp_output_iterator<std::string>
]
C:\Program Files\Microsoft Visual Studio 10.0\VC\INCLUDE\xutility(275) : error C2582: 'operator =' function is unavailable in 'rpp::pp_output_iterator<_Container>'
with
[
_Container=std::string
]
Here's some context..
pp-internal.h
#ifndef PP_INTERNAL_H
#define PP_INTERNAL_H
#include <algorithm>
#include <stdio.h>
namespace rpp {
namespace _PP_internal
{
..
64 template <typename _OutputIterator>
65 void output_line(const std::string &__filename, int __line, _OutputIterator __result)
66 {
67 std::string __msg;
68
69 __msg += "# ";
70
71 char __line_descr[16];
72 pp_snprintf (__line_descr, 16, "%d", __line);
73 __msg += __line_descr;
74
75 __msg += " \"";
76
77 if (__filename.empty ())
78 __msg += "<internal>";
79 else
80 __msg += __filename;
81
82 __msg += "\"\n";
83 std::copy (__msg.begin (), __msg.end (), __result);
84 }
pp-engine-bits.h
#ifndef PP_ENGINE_BITS_H
#define PP_ENGINE_BITS_H
#include <stdio.h>
namespace rpp {
450 template <typename _InputIterator, typename _OutputIterator>
451 void pp::operator () (_InputIterator __first, _InputIterator __last, _OutputIterator __result)
452 {
..
497 if (env.current_line != was)
498 {
499 env.current_line = was;
500 _PP_internal::output_line (env.current_file, env.current_line, __result);
501 }
.. and here's the definition of pp_output_iterator
pp-iterator.h
#ifndef PP_ITERATOR_H
#define PP_ITERATOR_H
#include <iterator>
namespace rpp {
..
template <typename _Container>
class pp_output_iterator
: public std::iterator<std::output_iterator_tag, void, void, void, void>
{
std::string &_M_result;
public:
explicit pp_output_iterator(std::string &__result):
_M_result (__result) {}
inline pp_output_iterator &operator=(typename _Container::const_reference __v)
{
if (_M_result.capacity () == _M_result.size ())
_M_result.reserve (_M_result.capacity () << 2);
_M_result.push_back(__v);
return *this;
}
inline pp_output_iterator &operator * () { return *this; }
inline pp_output_iterator &operator ++ () { return *this; }
inline pp_output_iterator operator ++ (int) { return *this; }
};