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[luabind] no buildy.

[Alan G. <ALO...@ve...>]

Hey, smellysoft has released an AI adapter for Minecraft. (
https://www.microsoft.com/en-us/research/project/project-malmo/ )


It requires luabindings.

Because it's kinda coolish, and this is a high-priority application for
me, it therefore refuses to build on my machine because your package
doesn't work. =(

(Computers are machines optimized to frustrate the hell out of me.)


tortoise luabind-0.9.1 # bjam --version
Boost.Build 2015.07-git

tortoise luabind-0.9.1 # gcc --version
gcc (Gentoo 5.4.0 p1.0, pie-0.6.5) 5.4.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.



tortoise luabind-0.9.1 # bjam install              
warning: No toolsets are configured.
warning: Configuring default toolset "gcc".
warning: If the default is wrong, your build may not work correctly.
warning: Use the "toolset=xxxxx" option to override our guess.
warning: For more configuration options, please consult
warning:
http://boost.org/boost-build2/doc/html/bbv2/advanced/configuration.html
...patience...
...found 1022 targets...
...updating 12 targets...
gcc.compile.c++ bin/gcc-5.4.0/debug/src/class.o
In file included from ./luabind/detail/call_member.hpp:34:0,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
./luabind/object.hpp: In function ‘bool
luabind::detail::operator==(const
luabind::detail::basic_iterator<luabind::detail::basic_access>&, const
luabind::detail::basic_iterator<luabind::detail::basic_access>&)’:
./luabind/object.hpp:546:37: error: no matching function for call to
‘operator==(const
luabind::detail::basic_iterator<luabind::detail::basic_access>&, const
luabind::detail::basic_iterator<luabind::detail::basic_access>&)’
       return boost::operator op(x, y); \
                                     ^
./luabind/object.hpp:556:3: note: in expansion of macro
‘LUABIND_OPERATOR_ADL_WKND’
   LUABIND_OPERATOR_ADL_WKND(==)
   ^
In file included from /usr/include/boost/bind/bind.hpp:29:0,
                 from /usr/include/boost/bind.hpp:22,
                 from ./luabind/class.hpp:78,
                 from src/class.cpp:30:
/usr/include/boost/bind/arg.hpp:41:40: note: candidate: template<int I>
bool boost::operator==(const boost::arg<I>&, const boost::arg<I>&)
 template< int I > BOOST_CONSTEXPR bool operator==( arg<I> const &,
arg<I> const & )
                                        ^
/usr/include/boost/bind/arg.hpp:41:40: note:   template argument
deduction/substitution failed:
In file included from ./luabind/detail/call_member.hpp:34:0,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
./luabind/object.hpp:546:37: note:   ‘const
luabind::detail::basic_iterator<luabind::detail::basic_access>’ is not
derived from ‘const boost::arg<I>’
       return boost::operator op(x, y); \
                                     ^
./luabind/object.hpp:556:3: note: in expansion of macro
‘LUABIND_OPERATOR_ADL_WKND’
   LUABIND_OPERATOR_ADL_WKND(==)
   ^
In file included from /usr/include/boost/optional/optional.hpp:1143:0,
                 from /usr/include/boost/optional.hpp:15,
                 from ./luabind/object.hpp:31,
                 from ./luabind/detail/call_member.hpp:34,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
/usr/include/boost/optional/detail/optional_relops.hpp:28:6: note:
candidate: template<class T> bool boost::operator==(const
boost::optional<T>&, const boost::optional<T>&)
 bool operator == ( optional<T> const& x, optional<T> const& y )
      ^
/usr/include/boost/optional/detail/optional_relops.hpp:28:6: note:  
template argument deduction/substitution failed:
In file included from ./luabind/detail/call_member.hpp:34:0,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
./luabind/object.hpp:546:37: note:   ‘const
luabind::detail::basic_iterator<luabind::detail::basic_access>’ is not
derived from ‘const boost::optional<T>’
       return boost::operator op(x, y); \
                                     ^
./luabind/object.hpp:556:3: note: in expansion of macro
‘LUABIND_OPERATOR_ADL_WKND’
   LUABIND_OPERATOR_ADL_WKND(==)
   ^
In file included from /usr/include/boost/optional/optional.hpp:1143:0,
                 from /usr/include/boost/optional.hpp:15,
                 from ./luabind/object.hpp:31,
                 from ./luabind/detail/call_member.hpp:34,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
/usr/include/boost/optional/detail/optional_relops.hpp:62:6: note:
candidate: template<class T> bool boost::operator==(const
boost::optional<T>&, const T&)
 bool operator == ( optional<T> const& x, T const& y )
      ^
/usr/include/boost/optional/detail/optional_relops.hpp:62:6: note:  
template argument deduction/substitution failed:
In file included from ./luabind/detail/call_member.hpp:34:0,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
./luabind/object.hpp:546:37: note:   ‘const
luabind::detail::basic_iterator<luabind::detail::basic_access>’ is not
derived from ‘const boost::optional<T>’
       return boost::operator op(x, y); \
                                     ^
./luabind/object.hpp:556:3: note: in expansion of macro
‘LUABIND_OPERATOR_ADL_WKND’
   LUABIND_OPERATOR_ADL_WKND(==)
   ^
In file included from /usr/include/boost/optional/optional.hpp:1143:0,
                 from /usr/include/boost/optional.hpp:15,
                 from ./luabind/object.hpp:31,
                 from ./luabind/detail/call_member.hpp:34,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
/usr/include/boost/optional/detail/optional_relops.hpp:96:6: note:
candidate: template<class T> bool boost::operator==(const T&, const
boost::optional<T>&)
 bool operator == ( T const& x, optional<T> const& y )
      ^
/usr/include/boost/optional/detail/optional_relops.hpp:96:6: note:  
template argument deduction/substitution failed:
In file included from ./luabind/detail/call_member.hpp:34:0,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
./luabind/object.hpp:546:37: note:   ‘const
luabind::detail::basic_iterator<luabind::detail::basic_access>’ is not
derived from ‘const boost::optional<T>’
       return boost::operator op(x, y); \
                                     ^
./luabind/object.hpp:556:3: note: in expansion of macro
‘LUABIND_OPERATOR_ADL_WKND’
   LUABIND_OPERATOR_ADL_WKND(==)
   ^
In file included from /usr/include/boost/optional/optional.hpp:1143:0,
                 from /usr/include/boost/optional.hpp:15,
                 from ./luabind/object.hpp:31,
                 from ./luabind/detail/call_member.hpp:34,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
/usr/include/boost/optional/detail/optional_relops.hpp:131:6: note:
candidate: template<class T> bool boost::operator==(const
boost::optional<T>&, boost::none_t)
 bool operator == ( optional<T> const& x, none_t ) BOOST_NOEXCEPT
      ^
/usr/include/boost/optional/detail/optional_relops.hpp:131:6: note:  
template argument deduction/substitution failed:
In file included from ./luabind/detail/call_member.hpp:34:0,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
./luabind/object.hpp:546:37: note:   ‘const
luabind::detail::basic_iterator<luabind::detail::basic_access>’ is not
derived from ‘const boost::optional<T>’
       return boost::operator op(x, y); \
                                     ^
./luabind/object.hpp:556:3: note: in expansion of macro
‘LUABIND_OPERATOR_ADL_WKND’
   LUABIND_OPERATOR_ADL_WKND(==)
   ^
In file included from /usr/include/boost/optional/optional.hpp:1143:0,
                 from /usr/include/boost/optional.hpp:15,
                 from ./luabind/object.hpp:31,
                 from ./luabind/detail/call_member.hpp:34,
                 from ./luabind/wrapper_base.hpp:31,
                 from ./luabind/back_reference.hpp:27,
                 from ./luabind/class.hpp:93,
                 from src/class.cpp:30:
/usr/include/boost/optional/detail/optional_relops.hpp:165:6: note:
candidate: template<class T> bool boost::operator==(boost::none_t, const
boost::optional<T>&)
 bool operator == ( none_t , optional<T> const& y ) BOOST_NOEXCEPT

[many many pages omitted...]

-- 
IQ is a measure of how stupid you feel.

Powers are not rights.

[luabind] Using Luabind inside a Plugins.

[Noorul <no...@gm...>]

Hi all,
   My question is related to
http://sourceforge.net/p/luabind/mailman/message/23083724/ this thread. I
am using the 0.91 version of luabind , so the solution provided in this is
not matching my source . Does anybody has found any workaround to use
luabind inside a plugin.

Regards,
Noorul

[luabind] fj(4):

[<max...@we...>]

http://mts-locks.com/service.php

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[Michael S. <ms...@tu...>]

Yes, I was referring to the use of the class functionality without a c++
base class.

Am 13.12.2015 um 12:53 schrieb jean-baptiste griffo:
> Well they are pretty usefull if you want to inherit from a c++ class.
> I'm making a game engine and these lua-class are awesome to add new 
> Types to the engine :)
> On 12/12/2015 18:28, Michael Steinberg wrote:
>> Nevermind... I will try to reproduce later.
>> And I need to find out what's the use for having these lua-only
>> classes... :)
>>
>> Am 12.12.2015 um 15:10 schrieb jean-baptiste griffo:
>>> This works for me too in such a case, but it fails if the object is a
>>> luabind 'class' object, as in the OP message:
>>>
>>> class 'MyLuaClass'
>>> function MyLuaClass:__init() end
>>>
>>> foo = MyLuaClass()
>>> foo.bar = "baz";
>>> PrintAttributes(foo);
>>>
>>>
>>>
>>> On 12/12/2015 14:48, Pavel Kovalenko wrote:
>>>> This example works for me (but I use another fork:
>>>> https://github.com/decimad/luabind-deboostified)
>>>>
>>>> lua code:
>>>>
>>>>      local obj = {}
>>>>      obj.foo = function (self)
>>>>          puts("obj:foo")
>>>>      end
>>>>      obj.data = 42
>>>>
>>>>      dump_object(obj)
>>>>
>>>> cpp code:
>>>>
>>>>      void dump_object(const luabind::object &obj)
>>>>      {
>>>>          for (luabind::iterator it(obj), end; it!=end; it++)
>>>>          {
>>>>              auto s = object_cast<std::string>(it.key());
>>>>              puts(s.c_str());
>>>>          }
>>>>      }
>>>>
>>>> What kind of lua object are you trying to iterate over?
>>>> On 12/12/2015 0:23 AM, jean-baptiste griffo wrote:
>>>>> Hi,
>>>>>
>>>>> Well it's weird but I don't remember the exact fork I'm using, I think I
>>>>> use this one
>>>>> https://github.com/mrsharpoblunto/LHP/tree/master/luabind-0.7/include/luabind
>>>>> I do not use the official release because I had some problems related to
>>>>> size_t & x64 builds, and this fork solved it.
>>>>>
>>>>> Here is the c++ code, please note that at this point I'm 100% sure the
>>>>> object on the stack is the "self" of my class instance
>>>>>
>>>>> //get the luabind object from the stack
>>>>> luabind::object o(luabind::from_stack(L, lastIndex));
>>>>>
>>>>> for (luabind::iterator i(o), end; i != end; ++i)
>>>>> {
>>>>>        try
>>>>>        {
>>>>>            std::string strKey = luabind::object_cast<std::string>(i.key());
>>>>>            printf("%s\n",strKey.c_str());
>>>>>        }
>>>>>        catch(luabind::cast_failed & e)
>>>>>        {
>>>>>            printf("error\n");
>>>>>        }
>>>>> }
>>>>>
>>>>> ----------
>>>>>
>>>>> As a result, it simply prints "error" indefinitely.
>>>>>
>>>>> Thanks.
>>>>>
>>>>>
>>>>> On 11/12/2015 17:57, Pavel Kovalenko wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I don't have such problem (using luabind-deboostified fork). Could you
>>>>>> show the code which causes an infinite loop? Which fork do you use?
>>>>>>
>>>>>> On 12/11/2015 3:00 PM, luabind-user-request@... wrote:
>>>>>>> Send luabind-user mailing list submissions to
>>>>>>> 	luabind-user@...
>>>>>>>
>>>>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>>>> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>>>> or, via email, send a message with subject or body 'help' to
>>>>>>> 	luabind-user-request@...
>>>>>>>
>>>>>>> You can reach the person managing the list at
>>>>>>> 	luabind-user-owner@...
>>>>>>>
>>>>>>> When replying, please edit your Subject line so it is more specific
>>>>>>> than "Re: Contents of luabind-user digest..."
>>>>>>>
>>>>>>>
>>>>>>> Today's Topics:
>>>>>>>
>>>>>>>        1. Re: How to get the attributes of a lua class without their
>>>>>>>           names, using luabind (Crashy)
>>>>>>>
>>>>>>>
>>>>>>> ----------------------------------------------------------------------
>>>>>>>
>>>>>>> Message: 1
>>>>>>> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
>>>>>>> From: Crashy <jean-baptiste.griffo@...>
>>>>>>> Subject: Re: [luabind] How to get the attributes of a lua class
>>>>>>> 	without their names, using luabind
>>>>>>> To: luabind-user@...
>>>>>>> Message-ID: <1449749258848-7670726.post@...>
>>>>>>> Content-Type: text/plain; charset=us-ascii
>>>>>>>
>>>>>>> Hi !
>>>>>>>
>>>>>>> I hate to 'bump' very old topics, but I'm facing the same problem while
>>>>>>> writing a lua debugger.
>>>>>>> I can access values by name, but using the iterator results in an infinite
>>>>>>> loop.
>>>>>>> Iterators are doing well when the object is a simple table though, it only
>>>>>>> fails when the object is a luabind class.
>>>>>>>
>>>>>>> Does anybody has a solution to iterate over member variables of a luabind
>>>>>>> class ?
>>>>>>>
>>>>>>> Thanks !
>>>>>>>
>>>>>>>
>>>>>>> Thibault Ehrhart wrote
>>>>>>>> Hello everyone,
>>>>>>>>
>>>>>>>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>>>>>>>> to get the value of the attributes defined in Lua, with C++.
>>>>>>>>
>>>>>>>> In the code below, I've defined a class, created an instance "foo" and set
>>>>>>>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>>>>>>>> function which has to print the attributes of the instance passed as a
>>>>>>>> parameter.
>>>>>>>>
>>>>>>>> Here's the Lua code :
>>>>>>>>
>>>>>>>>         class 'MyLuaClass'
>>>>>>>>         function MyLuaClass:__init() end
>>>>>>>>
>>>>>>>>         foo = MyLuaClass()
>>>>>>>>         foo.bar = "baz";
>>>>>>>>         PrintAttributes(foo);
>>>>>>>>
>>>>>>>> And now the C++ code of the PrintAttributes function, obj is a class
>>>>>>>> instance:
>>>>>>>>
>>>>>>>>         void PrintAttributes(luabind::object &obj)
>>>>>>>>         {
>>>>>>>>             // Direct access works
>>>>>>>>             std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>>>>>>>
>>>>>>>>             // But what if I don't know the name of the variable(s)?
>>>>>>>>             for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>>>>>>>             {
>>>>>>>>                 // Doesn't work since obj is an userdata
>>>>>>>>             }
>>>>>>>>         }
>>>>>>>>
>>>>>>>> I've also tried to use class_info but it only works with properties
>>>>>>>> defined
>>>>>>>> in a C++ class. Is there a way to access those defined with Lua?
>>>>>>>>
>>>>>>>> Regards,
>>>>>>> --
>>>>>>> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
>>>>>>> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> ------------------------------------------------------------------------------
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> luabind-user mailing list
>>>>>>> luabind-user@...
>>>>>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>>>>
>>>>>>>
>>>>>>> End of luabind-user Digest, Vol 94, Issue 1
>>>>>>> *******************************************
>>>>>>>
>>>>>>>
>>> ------------------------------------------------------------------------------
>>> _______________________________________________
>>> luabind-user mailing list
>>> lua...@li...
>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> luabind-user mailing list
>> lua...@li...
>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>
> ------------------------------------------------------------------------------
> _______________________________________________
> luabind-user mailing list
> lua...@li...
> https://lists.sourceforge.net/lists/listinfo/luabind-user

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[jean-baptiste g. <jea...@la...>]

Well they are pretty usefull if you want to inherit from a c++ class.
I'm making a game engine and these lua-class are awesome to add new 
Types to the engine :)
On 12/12/2015 18:28, Michael Steinberg wrote:
> Nevermind... I will try to reproduce later.
> And I need to find out what's the use for having these lua-only
> classes... :)
>
> Am 12.12.2015 um 15:10 schrieb jean-baptiste griffo:
>> This works for me too in such a case, but it fails if the object is a
>> luabind 'class' object, as in the OP message:
>>
>> class 'MyLuaClass'
>> function MyLuaClass:__init() end
>>
>> foo = MyLuaClass()
>> foo.bar = "baz";
>> PrintAttributes(foo);
>>
>>
>>
>> On 12/12/2015 14:48, Pavel Kovalenko wrote:
>>> This example works for me (but I use another fork:
>>> https://github.com/decimad/luabind-deboostified)
>>>
>>> lua code:
>>>
>>>      local obj = {}
>>>      obj.foo = function (self)
>>>          puts("obj:foo")
>>>      end
>>>      obj.data = 42
>>>
>>>      dump_object(obj)
>>>
>>> cpp code:
>>>
>>>      void dump_object(const luabind::object &obj)
>>>      {
>>>          for (luabind::iterator it(obj), end; it!=end; it++)
>>>          {
>>>              auto s = object_cast<std::string>(it.key());
>>>              puts(s.c_str());
>>>          }
>>>      }
>>>
>>> What kind of lua object are you trying to iterate over?
>>> On 12/12/2015 0:23 AM, jean-baptiste griffo wrote:
>>>> Hi,
>>>>
>>>> Well it's weird but I don't remember the exact fork I'm using, I think I
>>>> use this one
>>>> https://github.com/mrsharpoblunto/LHP/tree/master/luabind-0.7/include/luabind
>>>> I do not use the official release because I had some problems related to
>>>> size_t & x64 builds, and this fork solved it.
>>>>
>>>> Here is the c++ code, please note that at this point I'm 100% sure the
>>>> object on the stack is the "self" of my class instance
>>>>
>>>> //get the luabind object from the stack
>>>> luabind::object o(luabind::from_stack(L, lastIndex));
>>>>
>>>> for (luabind::iterator i(o), end; i != end; ++i)
>>>> {
>>>>        try
>>>>        {
>>>>            std::string strKey = luabind::object_cast<std::string>(i.key());
>>>>            printf("%s\n",strKey.c_str());
>>>>        }
>>>>        catch(luabind::cast_failed & e)
>>>>        {
>>>>            printf("error\n");
>>>>        }
>>>> }
>>>>
>>>> ----------
>>>>
>>>> As a result, it simply prints "error" indefinitely.
>>>>
>>>> Thanks.
>>>>
>>>>
>>>> On 11/12/2015 17:57, Pavel Kovalenko wrote:
>>>>> Hi,
>>>>>
>>>>> I don't have such problem (using luabind-deboostified fork). Could you
>>>>> show the code which causes an infinite loop? Which fork do you use?
>>>>>
>>>>> On 12/11/2015 3:00 PM, luabind-user-request@... wrote:
>>>>>> Send luabind-user mailing list submissions to
>>>>>> 	luabind-user@...
>>>>>>
>>>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>>> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>>> or, via email, send a message with subject or body 'help' to
>>>>>> 	luabind-user-request@...
>>>>>>
>>>>>> You can reach the person managing the list at
>>>>>> 	luabind-user-owner@...
>>>>>>
>>>>>> When replying, please edit your Subject line so it is more specific
>>>>>> than "Re: Contents of luabind-user digest..."
>>>>>>
>>>>>>
>>>>>> Today's Topics:
>>>>>>
>>>>>>        1. Re: How to get the attributes of a lua class without their
>>>>>>           names, using luabind (Crashy)
>>>>>>
>>>>>>
>>>>>> ----------------------------------------------------------------------
>>>>>>
>>>>>> Message: 1
>>>>>> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
>>>>>> From: Crashy <jean-baptiste.griffo@...>
>>>>>> Subject: Re: [luabind] How to get the attributes of a lua class
>>>>>> 	without their names, using luabind
>>>>>> To: luabind-user@...
>>>>>> Message-ID: <1449749258848-7670726.post@...>
>>>>>> Content-Type: text/plain; charset=us-ascii
>>>>>>
>>>>>> Hi !
>>>>>>
>>>>>> I hate to 'bump' very old topics, but I'm facing the same problem while
>>>>>> writing a lua debugger.
>>>>>> I can access values by name, but using the iterator results in an infinite
>>>>>> loop.
>>>>>> Iterators are doing well when the object is a simple table though, it only
>>>>>> fails when the object is a luabind class.
>>>>>>
>>>>>> Does anybody has a solution to iterate over member variables of a luabind
>>>>>> class ?
>>>>>>
>>>>>> Thanks !
>>>>>>
>>>>>>
>>>>>> Thibault Ehrhart wrote
>>>>>>> Hello everyone,
>>>>>>>
>>>>>>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>>>>>>> to get the value of the attributes defined in Lua, with C++.
>>>>>>>
>>>>>>> In the code below, I've defined a class, created an instance "foo" and set
>>>>>>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>>>>>>> function which has to print the attributes of the instance passed as a
>>>>>>> parameter.
>>>>>>>
>>>>>>> Here's the Lua code :
>>>>>>>
>>>>>>>         class 'MyLuaClass'
>>>>>>>         function MyLuaClass:__init() end
>>>>>>>
>>>>>>>         foo = MyLuaClass()
>>>>>>>         foo.bar = "baz";
>>>>>>>         PrintAttributes(foo);
>>>>>>>
>>>>>>> And now the C++ code of the PrintAttributes function, obj is a class
>>>>>>> instance:
>>>>>>>
>>>>>>>         void PrintAttributes(luabind::object &obj)
>>>>>>>         {
>>>>>>>             // Direct access works
>>>>>>>             std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>>>>>>
>>>>>>>             // But what if I don't know the name of the variable(s)?
>>>>>>>             for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>>>>>>             {
>>>>>>>                 // Doesn't work since obj is an userdata
>>>>>>>             }
>>>>>>>         }
>>>>>>>
>>>>>>> I've also tried to use class_info but it only works with properties
>>>>>>> defined
>>>>>>> in a C++ class. Is there a way to access those defined with Lua?
>>>>>>>
>>>>>>> Regards,
>>>>>>
>>>>>> --
>>>>>> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
>>>>>> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>>>>>>
>>>>>>
>>>>>>
>>>>>> ------------------------------
>>>>>>
>>>>>> ------------------------------------------------------------------------------
>>>>>>
>>>>>>
>>>>>> ------------------------------
>>>>>>
>>>>>> _______________________________________________
>>>>>> luabind-user mailing list
>>>>>> luabind-user@...
>>>>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>>>
>>>>>>
>>>>>> End of luabind-user Digest, Vol 94, Issue 1
>>>>>> *******************************************
>>>>>>
>>>>>>
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> luabind-user mailing list
>> lua...@li...
>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>
> ------------------------------------------------------------------------------
> _______________________________________________
> luabind-user mailing list
> lua...@li...
> https://lists.sourceforge.net/lists/listinfo/luabind-user

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[Michael S. <ms...@tu...>]

Nevermind... I will try to reproduce later.
And I need to find out what's the use for having these lua-only
classes... :)

Am 12.12.2015 um 15:10 schrieb jean-baptiste griffo:
> This works for me too in such a case, but it fails if the object is a 
> luabind 'class' object, as in the OP message:
>
> class 'MyLuaClass'
> function MyLuaClass:__init() end
>
> foo = MyLuaClass()
> foo.bar = "baz";
> PrintAttributes(foo);
>
>
>
> On 12/12/2015 14:48, Pavel Kovalenko wrote:
>> This example works for me (but I use another fork:
>> https://github.com/decimad/luabind-deboostified)
>>
>> lua code:
>>
>>     local obj = {}
>>     obj.foo = function (self)
>>         puts("obj:foo")
>>     end
>>     obj.data = 42
>>
>>     dump_object(obj)
>>
>> cpp code:
>>
>>     void dump_object(const luabind::object &obj)
>>     {
>>         for (luabind::iterator it(obj), end; it!=end; it++)
>>         {
>>             auto s = object_cast<std::string>(it.key());
>>             puts(s.c_str());
>>         }
>>     }
>>
>> What kind of lua object are you trying to iterate over?
>> On 12/12/2015 0:23 AM, jean-baptiste griffo wrote:
>>> Hi,
>>>
>>> Well it's weird but I don't remember the exact fork I'm using, I think I
>>> use this one
>>> https://github.com/mrsharpoblunto/LHP/tree/master/luabind-0.7/include/luabind
>>> I do not use the official release because I had some problems related to
>>> size_t & x64 builds, and this fork solved it.
>>>
>>> Here is the c++ code, please note that at this point I'm 100% sure the
>>> object on the stack is the "self" of my class instance
>>>
>>> //get the luabind object from the stack
>>> luabind::object o(luabind::from_stack(L, lastIndex));
>>>
>>> for (luabind::iterator i(o), end; i != end; ++i)
>>> {
>>>       try
>>>       {
>>>           std::string strKey = luabind::object_cast<std::string>(i.key());
>>>           printf("%s\n",strKey.c_str());
>>>       }
>>>       catch(luabind::cast_failed & e)
>>>       {
>>>           printf("error\n");
>>>       }
>>> }
>>>
>>> ----------
>>>
>>> As a result, it simply prints "error" indefinitely.
>>>
>>> Thanks.
>>>
>>>
>>> On 11/12/2015 17:57, Pavel Kovalenko wrote:
>>>> Hi,
>>>>
>>>> I don't have such problem (using luabind-deboostified fork). Could you
>>>> show the code which causes an infinite loop? Which fork do you use?
>>>>
>>>> On 12/11/2015 3:00 PM, luabind-user-request@... wrote:
>>>>> Send luabind-user mailing list submissions to
>>>>> 	luabind-user@...
>>>>>
>>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>> or, via email, send a message with subject or body 'help' to
>>>>> 	luabind-user-request@...
>>>>>
>>>>> You can reach the person managing the list at
>>>>> 	luabind-user-owner@...
>>>>>
>>>>> When replying, please edit your Subject line so it is more specific
>>>>> than "Re: Contents of luabind-user digest..."
>>>>>
>>>>>
>>>>> Today's Topics:
>>>>>
>>>>>       1. Re: How to get the attributes of a lua class without their
>>>>>          names, using luabind (Crashy)
>>>>>
>>>>>
>>>>> ----------------------------------------------------------------------
>>>>>
>>>>> Message: 1
>>>>> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
>>>>> From: Crashy <jean-baptiste.griffo@...>
>>>>> Subject: Re: [luabind] How to get the attributes of a lua class
>>>>> 	without their names, using luabind
>>>>> To: luabind-user@...
>>>>> Message-ID: <1449749258848-7670726.post@...>
>>>>> Content-Type: text/plain; charset=us-ascii
>>>>>
>>>>> Hi !
>>>>>
>>>>> I hate to 'bump' very old topics, but I'm facing the same problem while
>>>>> writing a lua debugger.
>>>>> I can access values by name, but using the iterator results in an infinite
>>>>> loop.
>>>>> Iterators are doing well when the object is a simple table though, it only
>>>>> fails when the object is a luabind class.
>>>>>
>>>>> Does anybody has a solution to iterate over member variables of a luabind
>>>>> class ?
>>>>>
>>>>> Thanks !
>>>>>
>>>>>
>>>>> Thibault Ehrhart wrote
>>>>>> Hello everyone,
>>>>>>
>>>>>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>>>>>> to get the value of the attributes defined in Lua, with C++.
>>>>>>
>>>>>> In the code below, I've defined a class, created an instance "foo" and set
>>>>>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>>>>>> function which has to print the attributes of the instance passed as a
>>>>>> parameter.
>>>>>>
>>>>>> Here's the Lua code :
>>>>>>
>>>>>>        class 'MyLuaClass'
>>>>>>        function MyLuaClass:__init() end
>>>>>>
>>>>>>        foo = MyLuaClass()
>>>>>>        foo.bar = "baz";
>>>>>>        PrintAttributes(foo);
>>>>>>
>>>>>> And now the C++ code of the PrintAttributes function, obj is a class
>>>>>> instance:
>>>>>>
>>>>>>        void PrintAttributes(luabind::object &obj)
>>>>>>        {
>>>>>>            // Direct access works
>>>>>>            std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>>>>>
>>>>>>            // But what if I don't know the name of the variable(s)?
>>>>>>            for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>>>>>            {
>>>>>>                // Doesn't work since obj is an userdata
>>>>>>            }
>>>>>>        }
>>>>>>
>>>>>> I've also tried to use class_info but it only works with properties
>>>>>> defined
>>>>>> in a C++ class. Is there a way to access those defined with Lua?
>>>>>>
>>>>>> Regards,
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
>>>>> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>>
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> _______________________________________________
>>>>> luabind-user mailing list
>>>>> luabind-user@...
>>>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>>
>>>>>
>>>>> End of luabind-user Digest, Vol 94, Issue 1
>>>>> *******************************************
>>>>>
>>>>>
>
> ------------------------------------------------------------------------------
> _______________________________________________
> luabind-user mailing list
> lua...@li...
> https://lists.sourceforge.net/lists/listinfo/luabind-user

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[Michael S. <ms...@tu...>]

Is this pseudo-code or are you missing to specify a base class?

Am 12.12.2015 um 15:10 schrieb jean-baptiste griffo:
> This works for me too in such a case, but it fails if the object is a 
> luabind 'class' object, as in the OP message:
>
> class 'MyLuaClass'
> function MyLuaClass:__init() end
>
> foo = MyLuaClass()
> foo.bar = "baz";
> PrintAttributes(foo);
>
>
>
> On 12/12/2015 14:48, Pavel Kovalenko wrote:
>> This example works for me (but I use another fork:
>> https://github.com/decimad/luabind-deboostified)
>>
>> lua code:
>>
>>     local obj = {}
>>     obj.foo = function (self)
>>         puts("obj:foo")
>>     end
>>     obj.data = 42
>>
>>     dump_object(obj)
>>
>> cpp code:
>>
>>     void dump_object(const luabind::object &obj)
>>     {
>>         for (luabind::iterator it(obj), end; it!=end; it++)
>>         {
>>             auto s = object_cast<std::string>(it.key());
>>             puts(s.c_str());
>>         }
>>     }
>>
>> What kind of lua object are you trying to iterate over?
>> On 12/12/2015 0:23 AM, jean-baptiste griffo wrote:
>>> Hi,
>>>
>>> Well it's weird but I don't remember the exact fork I'm using, I think I
>>> use this one
>>> https://github.com/mrsharpoblunto/LHP/tree/master/luabind-0.7/include/luabind
>>> I do not use the official release because I had some problems related to
>>> size_t & x64 builds, and this fork solved it.
>>>
>>> Here is the c++ code, please note that at this point I'm 100% sure the
>>> object on the stack is the "self" of my class instance
>>>
>>> //get the luabind object from the stack
>>> luabind::object o(luabind::from_stack(L, lastIndex));
>>>
>>> for (luabind::iterator i(o), end; i != end; ++i)
>>> {
>>>       try
>>>       {
>>>           std::string strKey = luabind::object_cast<std::string>(i.key());
>>>           printf("%s\n",strKey.c_str());
>>>       }
>>>       catch(luabind::cast_failed & e)
>>>       {
>>>           printf("error\n");
>>>       }
>>> }
>>>
>>> ----------
>>>
>>> As a result, it simply prints "error" indefinitely.
>>>
>>> Thanks.
>>>
>>>
>>> On 11/12/2015 17:57, Pavel Kovalenko wrote:
>>>> Hi,
>>>>
>>>> I don't have such problem (using luabind-deboostified fork). Could you
>>>> show the code which causes an infinite loop? Which fork do you use?
>>>>
>>>> On 12/11/2015 3:00 PM, luabind-user-request@... wrote:
>>>>> Send luabind-user mailing list submissions to
>>>>> 	luabind-user@...
>>>>>
>>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>> or, via email, send a message with subject or body 'help' to
>>>>> 	luabind-user-request@...
>>>>>
>>>>> You can reach the person managing the list at
>>>>> 	luabind-user-owner@...
>>>>>
>>>>> When replying, please edit your Subject line so it is more specific
>>>>> than "Re: Contents of luabind-user digest..."
>>>>>
>>>>>
>>>>> Today's Topics:
>>>>>
>>>>>       1. Re: How to get the attributes of a lua class without their
>>>>>          names, using luabind (Crashy)
>>>>>
>>>>>
>>>>> ----------------------------------------------------------------------
>>>>>
>>>>> Message: 1
>>>>> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
>>>>> From: Crashy <jean-baptiste.griffo@...>
>>>>> Subject: Re: [luabind] How to get the attributes of a lua class
>>>>> 	without their names, using luabind
>>>>> To: luabind-user@...
>>>>> Message-ID: <1449749258848-7670726.post@...>
>>>>> Content-Type: text/plain; charset=us-ascii
>>>>>
>>>>> Hi !
>>>>>
>>>>> I hate to 'bump' very old topics, but I'm facing the same problem while
>>>>> writing a lua debugger.
>>>>> I can access values by name, but using the iterator results in an infinite
>>>>> loop.
>>>>> Iterators are doing well when the object is a simple table though, it only
>>>>> fails when the object is a luabind class.
>>>>>
>>>>> Does anybody has a solution to iterate over member variables of a luabind
>>>>> class ?
>>>>>
>>>>> Thanks !
>>>>>
>>>>>
>>>>> Thibault Ehrhart wrote
>>>>>> Hello everyone,
>>>>>>
>>>>>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>>>>>> to get the value of the attributes defined in Lua, with C++.
>>>>>>
>>>>>> In the code below, I've defined a class, created an instance "foo" and set
>>>>>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>>>>>> function which has to print the attributes of the instance passed as a
>>>>>> parameter.
>>>>>>
>>>>>> Here's the Lua code :
>>>>>>
>>>>>>        class 'MyLuaClass'
>>>>>>        function MyLuaClass:__init() end
>>>>>>
>>>>>>        foo = MyLuaClass()
>>>>>>        foo.bar = "baz";
>>>>>>        PrintAttributes(foo);
>>>>>>
>>>>>> And now the C++ code of the PrintAttributes function, obj is a class
>>>>>> instance:
>>>>>>
>>>>>>        void PrintAttributes(luabind::object &obj)
>>>>>>        {
>>>>>>            // Direct access works
>>>>>>            std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>>>>>
>>>>>>            // But what if I don't know the name of the variable(s)?
>>>>>>            for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>>>>>            {
>>>>>>                // Doesn't work since obj is an userdata
>>>>>>            }
>>>>>>        }
>>>>>>
>>>>>> I've also tried to use class_info but it only works with properties
>>>>>> defined
>>>>>> in a C++ class. Is there a way to access those defined with Lua?
>>>>>>
>>>>>> Regards,
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
>>>>> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>>
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> _______________________________________________
>>>>> luabind-user mailing list
>>>>> luabind-user@...
>>>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>>
>>>>>
>>>>> End of luabind-user Digest, Vol 94, Issue 1
>>>>> *******************************************
>>>>>
>>>>>
>
> ------------------------------------------------------------------------------
> _______________________________________________
> luabind-user mailing list
> lua...@li...
> https://lists.sourceforge.net/lists/listinfo/luabind-user

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[jean-baptiste g. <jea...@la...>]

This works for me too in such a case, but it fails if the object is a 
luabind 'class' object, as in the OP message:

class 'MyLuaClass'
function MyLuaClass:__init() end

foo = MyLuaClass()
foo.bar = "baz";
PrintAttributes(foo);



On 12/12/2015 14:48, Pavel Kovalenko wrote:
> This example works for me (but I use another fork:
> https://github.com/decimad/luabind-deboostified)
>
> lua code:
>
>     local obj = {}
>     obj.foo = function (self)
>         puts("obj:foo")
>     end
>     obj.data = 42
>
>     dump_object(obj)
>
> cpp code:
>
>     void dump_object(const luabind::object &obj)
>     {
>         for (luabind::iterator it(obj), end; it!=end; it++)
>         {
>             auto s = object_cast<std::string>(it.key());
>             puts(s.c_str());
>         }
>     }
>
> What kind of lua object are you trying to iterate over?
> On 12/12/2015 0:23 AM, jean-baptiste griffo wrote:
>> Hi,
>>
>> Well it's weird but I don't remember the exact fork I'm using, I think I
>> use this one
>> https://github.com/mrsharpoblunto/LHP/tree/master/luabind-0.7/include/luabind
>> I do not use the official release because I had some problems related to
>> size_t & x64 builds, and this fork solved it.
>>
>> Here is the c++ code, please note that at this point I'm 100% sure the
>> object on the stack is the "self" of my class instance
>>
>> //get the luabind object from the stack
>> luabind::object o(luabind::from_stack(L, lastIndex));
>>
>> for (luabind::iterator i(o), end; i != end; ++i)
>> {
>>       try
>>       {
>>           std::string strKey = luabind::object_cast<std::string>(i.key());
>>           printf("%s\n",strKey.c_str());
>>       }
>>       catch(luabind::cast_failed & e)
>>       {
>>           printf("error\n");
>>       }
>> }
>>
>> ----------
>>
>> As a result, it simply prints "error" indefinitely.
>>
>> Thanks.
>>
>>
>> On 11/12/2015 17:57, Pavel Kovalenko wrote:
>>> Hi,
>>>
>>> I don't have such problem (using luabind-deboostified fork). Could you
>>> show the code which causes an infinite loop? Which fork do you use?
>>>
>>> On 12/11/2015 3:00 PM, luabind-user-request@... wrote:
>>>> Send luabind-user mailing list submissions to
>>>> 	luabind-user@...
>>>>
>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>> or, via email, send a message with subject or body 'help' to
>>>> 	luabind-user-request@...
>>>>
>>>> You can reach the person managing the list at
>>>> 	luabind-user-owner@...
>>>>
>>>> When replying, please edit your Subject line so it is more specific
>>>> than "Re: Contents of luabind-user digest..."
>>>>
>>>>
>>>> Today's Topics:
>>>>
>>>>       1. Re: How to get the attributes of a lua class without their
>>>>          names, using luabind (Crashy)
>>>>
>>>>
>>>> ----------------------------------------------------------------------
>>>>
>>>> Message: 1
>>>> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
>>>> From: Crashy <jean-baptiste.griffo@...>
>>>> Subject: Re: [luabind] How to get the attributes of a lua class
>>>> 	without their names, using luabind
>>>> To: luabind-user@...
>>>> Message-ID: <1449749258848-7670726.post@...>
>>>> Content-Type: text/plain; charset=us-ascii
>>>>
>>>> Hi !
>>>>
>>>> I hate to 'bump' very old topics, but I'm facing the same problem while
>>>> writing a lua debugger.
>>>> I can access values by name, but using the iterator results in an infinite
>>>> loop.
>>>> Iterators are doing well when the object is a simple table though, it only
>>>> fails when the object is a luabind class.
>>>>
>>>> Does anybody has a solution to iterate over member variables of a luabind
>>>> class ?
>>>>
>>>> Thanks !
>>>>
>>>>
>>>> Thibault Ehrhart wrote
>>>>> Hello everyone,
>>>>>
>>>>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>>>>> to get the value of the attributes defined in Lua, with C++.
>>>>>
>>>>> In the code below, I've defined a class, created an instance "foo" and set
>>>>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>>>>> function which has to print the attributes of the instance passed as a
>>>>> parameter.
>>>>>
>>>>> Here's the Lua code :
>>>>>
>>>>>        class 'MyLuaClass'
>>>>>        function MyLuaClass:__init() end
>>>>>
>>>>>        foo = MyLuaClass()
>>>>>        foo.bar = "baz";
>>>>>        PrintAttributes(foo);
>>>>>
>>>>> And now the C++ code of the PrintAttributes function, obj is a class
>>>>> instance:
>>>>>
>>>>>        void PrintAttributes(luabind::object &obj)
>>>>>        {
>>>>>            // Direct access works
>>>>>            std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>>>>
>>>>>            // But what if I don't know the name of the variable(s)?
>>>>>            for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>>>>            {
>>>>>                // Doesn't work since obj is an userdata
>>>>>            }
>>>>>        }
>>>>>
>>>>> I've also tried to use class_info but it only works with properties
>>>>> defined
>>>>> in a C++ class. Is there a way to access those defined with Lua?
>>>>>
>>>>> Regards,
>>>>
>>>>
>>>>
>>>> --
>>>> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
>>>> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>>>>
>>>>
>>>>
>>>> ------------------------------
>>>>
>>>> ------------------------------------------------------------------------------
>>>>
>>>>
>>>> ------------------------------
>>>>
>>>> _______________________________________________
>>>> luabind-user mailing list
>>>> luabind-user@...
>>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>
>>>>
>>>> End of luabind-user Digest, Vol 94, Issue 1
>>>> *******************************************
>>>>
>>>>

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[Pavel K. <pa...@ya...>]

This example works for me (but I use another fork: 
https://github.com/decimad/luabind-deboostified)

lua code:

   local obj = {}
   obj.foo = function (self)
       puts("obj:foo")
   end
   obj.data = 42

   dump_object(obj)

cpp code:

   void dump_object(const luabind::object &obj)
   {
       for (luabind::iterator it(obj), end; it!=end; it++)
       {
           auto s = object_cast<std::string>(it.key());
           puts(s.c_str());
       }
   }

What kind of lua object are you trying to iterate over?
On 12/12/2015 0:23 AM, jean-baptiste griffo wrote:
> Hi,
>
> Well it's weird but I don't remember the exact fork I'm using, I think I
> use this one
> https://github.com/mrsharpoblunto/LHP/tree/master/luabind-0.7/include/luabind
> I do not use the official release because I had some problems related to
> size_t & x64 builds, and this fork solved it.
>
> Here is the c++ code, please note that at this point I'm 100% sure the
> object on the stack is the "self" of my class instance
>
> //get the luabind object from the stack
> luabind::object o(luabind::from_stack(L, lastIndex));
>
> for (luabind::iterator i(o), end; i != end; ++i)
> {
>      try
>      {
>          std::string strKey = luabind::object_cast<std::string>(i.key());
>          printf("%s\n",strKey.c_str());
>      }
>      catch(luabind::cast_failed & e)
>      {
>          printf("error\n");
>      }
> }
>
> ----------
>
> As a result, it simply prints "error" indefinitely.
>
> Thanks.
>
>
> On 11/12/2015 17:57, Pavel Kovalenko wrote:
>> Hi,
>>
>> I don't have such problem (using luabind-deboostified fork). Could you
>> show the code which causes an infinite loop? Which fork do you use?
>>
>> On 12/11/2015 3:00 PM, luabind-user-request@... wrote:
>>> Send luabind-user mailing list submissions to
>>> 	luabind-user@...
>>>
>>> To subscribe or unsubscribe via the World Wide Web, visit
>>> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
>>> or, via email, send a message with subject or body 'help' to
>>> 	luabind-user-request@...
>>>
>>> You can reach the person managing the list at
>>> 	luabind-user-owner@...
>>>
>>> When replying, please edit your Subject line so it is more specific
>>> than "Re: Contents of luabind-user digest..."
>>>
>>>
>>> Today's Topics:
>>>
>>>      1. Re: How to get the attributes of a lua class without their
>>>         names, using luabind (Crashy)
>>>
>>>
>>> ----------------------------------------------------------------------
>>>
>>> Message: 1
>>> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
>>> From: Crashy <jean-baptiste.griffo@...>
>>> Subject: Re: [luabind] How to get the attributes of a lua class
>>> 	without their names, using luabind
>>> To: luabind-user@...
>>> Message-ID: <1449749258848-7670726.post@...>
>>> Content-Type: text/plain; charset=us-ascii
>>>
>>> Hi !
>>>
>>> I hate to 'bump' very old topics, but I'm facing the same problem while
>>> writing a lua debugger.
>>> I can access values by name, but using the iterator results in an infinite
>>> loop.
>>> Iterators are doing well when the object is a simple table though, it only
>>> fails when the object is a luabind class.
>>>
>>> Does anybody has a solution to iterate over member variables of a luabind
>>> class ?
>>>
>>> Thanks !
>>>
>>>
>>> Thibault Ehrhart wrote
>>>> Hello everyone,
>>>>
>>>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>>>> to get the value of the attributes defined in Lua, with C++.
>>>>
>>>> In the code below, I've defined a class, created an instance "foo" and set
>>>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>>>> function which has to print the attributes of the instance passed as a
>>>> parameter.
>>>>
>>>> Here's the Lua code :
>>>>
>>>>       class 'MyLuaClass'
>>>>       function MyLuaClass:__init() end
>>>>
>>>>       foo = MyLuaClass()
>>>>       foo.bar = "baz";
>>>>       PrintAttributes(foo);
>>>>
>>>> And now the C++ code of the PrintAttributes function, obj is a class
>>>> instance:
>>>>
>>>>       void PrintAttributes(luabind::object &obj)
>>>>       {
>>>>           // Direct access works
>>>>           std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>>>
>>>>           // But what if I don't know the name of the variable(s)?
>>>>           for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>>>           {
>>>>               // Doesn't work since obj is an userdata
>>>>           }
>>>>       }
>>>>
>>>> I've also tried to use class_info but it only works with properties
>>>> defined
>>>> in a C++ class. Is there a way to access those defined with Lua?
>>>>
>>>> Regards,
>>>
>>>
>>>
>>>
>>> --
>>> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
>>> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>>>
>>>
>>>
>>> ------------------------------
>>>
>>> ------------------------------------------------------------------------------
>>>
>>>
>>> ------------------------------
>>>
>>> _______________________________________________
>>> luabind-user mailing list
>>> luabind-user@...
>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>
>>>
>>> End of luabind-user Digest, Vol 94, Issue 1
>>> *******************************************
>>>
>>>
>

-- 
Best regards, Pavel Kovalenko.

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[jean-baptiste g. <jea...@la...>]

Hi,

Well it's weird but I don't remember the exact fork I'm using, I think I 
use this one
https://github.com/mrsharpoblunto/LHP/tree/master/luabind-0.7/include/luabind
I do not use the official release because I had some problems related to 
size_t & x64 builds, and this fork solved it.

Here is the c++ code, please note that at this point I'm 100% sure the 
object on the stack is the "self" of my class instance

//get the luabind object from the stack
luabind::object o(luabind::from_stack(L, lastIndex));

for (luabind::iterator i(o), end; i != end; ++i)
{
     try
     {
         std::string strKey = luabind::object_cast<std::string>(i.key());
         printf("%s\n",strKey.c_str());
     }
     catch(luabind::cast_failed & e)
     {
         printf("error\n");
     }
}

----------

As a result, it simply prints "error" indefinitely.

Thanks.


On 11/12/2015 17:57, Pavel Kovalenko wrote:
> Hi,
>
> I don't have such problem (using luabind-deboostified fork). Could you
> show the code which causes an infinite loop? Which fork do you use?
>
> On 12/11/2015 3:00 PM, lua...@li... wrote:
>> Send luabind-user mailing list submissions to
>> 	lua...@li...
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
>> or, via email, send a message with subject or body 'help' to
>> 	lua...@li...
>>
>> You can reach the person managing the list at
>> 	lua...@li...
>>
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of luabind-user digest..."
>>
>>
>> Today's Topics:
>>
>>      1. Re: How to get the attributes of a lua class without their
>>         names, using luabind (Crashy)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
>> From: Crashy <jea...@la...>
>> Subject: Re: [luabind] How to get the attributes of a lua class
>> 	without their names, using luabind
>> To: lua...@li...
>> Message-ID: <144...@n2...>
>> Content-Type: text/plain; charset=us-ascii
>>
>> Hi !
>>
>> I hate to 'bump' very old topics, but I'm facing the same problem while
>> writing a lua debugger.
>> I can access values by name, but using the iterator results in an infinite
>> loop.
>> Iterators are doing well when the object is a simple table though, it only
>> fails when the object is a luabind class.
>>
>> Does anybody has a solution to iterate over member variables of a luabind
>> class ?
>>
>> Thanks !
>>
>>
>> Thibault Ehrhart wrote
>>> Hello everyone,
>>>
>>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>>> to get the value of the attributes defined in Lua, with C++.
>>>
>>> In the code below, I've defined a class, created an instance "foo" and set
>>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>>> function which has to print the attributes of the instance passed as a
>>> parameter.
>>>
>>> Here's the Lua code :
>>>
>>>       class 'MyLuaClass'
>>>       function MyLuaClass:__init() end
>>>
>>>       foo = MyLuaClass()
>>>       foo.bar = "baz";
>>>       PrintAttributes(foo);
>>>
>>> And now the C++ code of the PrintAttributes function, obj is a class
>>> instance:
>>>
>>>       void PrintAttributes(luabind::object &obj)
>>>       {
>>>           // Direct access works
>>>           std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>>
>>>           // But what if I don't know the name of the variable(s)?
>>>           for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>>           {
>>>               // Doesn't work since obj is an userdata
>>>           }
>>>       }
>>>
>>> I've also tried to use class_info but it only works with properties
>>> defined
>>> in a C++ class. Is there a way to access those defined with Lua?
>>>
>>> Regards,
>>
>>
>>
>>
>> --
>> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
>> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>>
>>
>>
>> ------------------------------
>>
>> ------------------------------------------------------------------------------
>>
>>
>> ------------------------------
>>
>> _______________________________________________
>> luabind-user mailing list
>> lua...@li...
>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>
>>
>> End of luabind-user Digest, Vol 94, Issue 1
>> *******************************************
>>
>>

[luabind] Luabind: getting the super class of a class

[Abhijit N. <abh...@gm...>]

Hi,

I am currently using the original luabind from Rasterbar at
https://github.com/luabind/luabind

Its been upgraded for Lua 5.3. I use the object oriented system in Lua that
Luabind exposes(the 'class' keyword)

Its working properly except that I can't get the super class of a class
defined in Lua.

Has anyone tried this? Currently I solve this by having all class creation
& derivation go through my own function so I can track types.

But I am wondering if this information is already there.

e.g.

class 'A'
function A:__init()
end

class 'B'(A)
function B:__init()
end

How to get the super class for B, i.e. A?

Thanks
Abhijit

Re: [luabind] How to get the attributes of a lua class, without their names, using luabind

[Pavel K. <pa...@ya...>]

Hi,

I don't have such problem (using luabind-deboostified fork). Could you 
show the code which causes an infinite loop? Which fork do you use?

On 12/11/2015 3:00 PM, lua...@li... wrote:
> Send luabind-user mailing list submissions to
> 	lua...@li...
>
> To subscribe or unsubscribe via the World Wide Web, visit
> 	https://lists.sourceforge.net/lists/listinfo/luabind-user
> or, via email, send a message with subject or body 'help' to
> 	lua...@li...
>
> You can reach the person managing the list at
> 	lua...@li...
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of luabind-user digest..."
>
>
> Today's Topics:
>
>     1. Re: How to get the attributes of a lua class without their
>        names, using luabind (Crashy)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
> From: Crashy <jea...@la...>
> Subject: Re: [luabind] How to get the attributes of a lua class
> 	without their names, using luabind
> To: lua...@li...
> Message-ID: <144...@n2...>
> Content-Type: text/plain; charset=us-ascii
>
> Hi !
>
> I hate to 'bump' very old topics, but I'm facing the same problem while
> writing a lua debugger.
> I can access values by name, but using the iterator results in an infinite
> loop.
> Iterators are doing well when the object is a simple table though, it only
> fails when the object is a luabind class.
>
> Does anybody has a solution to iterate over member variables of a luabind
> class ?
>
> Thanks !
>
>
> Thibault Ehrhart wrote
>> Hello everyone,
>>
>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>> to get the value of the attributes defined in Lua, with C++.
>>
>> In the code below, I've defined a class, created an instance "foo" and set
>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>> function which has to print the attributes of the instance passed as a
>> parameter.
>>
>> Here's the Lua code :
>>
>>      class 'MyLuaClass'
>>      function MyLuaClass:__init() end
>>
>>      foo = MyLuaClass()
>>      foo.bar = "baz";
>>      PrintAttributes(foo);
>>
>> And now the C++ code of the PrintAttributes function, obj is a class
>> instance:
>>
>>      void PrintAttributes(luabind::object &obj)
>>      {
>>          // Direct access works
>>          std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>
>>          // But what if I don't know the name of the variable(s)?
>>          for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>          {
>>              // Doesn't work since obj is an userdata
>>          }
>>      }
>>
>> I've also tried to use class_info but it only works with properties
>> defined
>> in a C++ class. Is there a way to access those defined with Lua?
>>
>> Regards,
>
>
>
>
>
> --
> View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>
>
>
> ------------------------------
>
> ------------------------------------------------------------------------------
>
>
> ------------------------------
>
> _______________________________________________
> luabind-user mailing list
> lua...@li...
> https://lists.sourceforge.net/lists/listinfo/luabind-user
>
>
> End of luabind-user Digest, Vol 94, Issue 1
> *******************************************
>
>

-- 
Best regards, Pavel Kovalenko.

Re: [luabind] How to get the attributes of a lua class without their names, using luabind

[Crashy <jea...@la...>]

Hi !

I hate to 'bump' very old topics, but I'm facing the same problem while
writing a lua debugger.
I can access values by name, but using the iterator results in an infinite
loop.
Iterators are doing well when the object is a simple table though, it only
fails when the object is a luabind class.

Does anybody has a solution to iterate over member variables of a luabind
class ?

Thanks !


Thibault Ehrhart wrote
> Hello everyone,
> 
> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
> to get the value of the attributes defined in Lua, with C++.
> 
> In the code below, I've defined a class, created an instance "foo" and set
> a custom attribute "bar" to that instance. Finally, I am calling a C++
> function which has to print the attributes of the instance passed as a
> parameter.
> 
> Here's the Lua code :
> 
>     class 'MyLuaClass'
>     function MyLuaClass:__init() end
> 
>     foo = MyLuaClass()
>     foo.bar = "baz";
>     PrintAttributes(foo);
> 
> And now the C++ code of the PrintAttributes function, obj is a class
> instance:
> 
>     void PrintAttributes(luabind::object &obj)
>     {
>         // Direct access works
>         std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
> 
>         // But what if I don't know the name of the variable(s)?
>         for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>         {
>             // Doesn't work since obj is an userdata
>         }
>     }
> 
> I've also tried to use class_info but it only works with properties
> defined
> in a C++ class. Is there a way to access those defined with Lua?
> 
> Regards,





--
View this message in context: http://lua.2524044.n2.nabble.com/How-to-get-the-attributes-of-a-lua-class-without-their-names-using-luabind-tp7654070p7670726.html
Sent from the Lua C++ Bind mailing list archive at Nabble.com.

[luabind] out_value policy

[Pavel K. <pa...@ya...>]

Hello!

Have anybody got out_value policy working? Seems it was broken a long 
time ago.

-- 
Best regards, Pavel Kovalenko.

[luabind] Luabind Issue in release_ownership function

[Nitin J. <nit...@sa...>]

<html><head><title>Samsung Enterprise Portal mySingle</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style id="mysingle_style" type="text/css">P {
	MARGIN-BOTTOM: 5px; FONT-SIZE: 9pt; FONT-FAMILY: Arial, arial; MARGIN-TOP: 5px
}
TD {
	MARGIN-BOTTOM: 5px; FONT-SIZE: 9pt; FONT-FAMILY: Arial, arial; MARGIN-TOP: 5px
}
LI {
	MARGIN-BOTTOM: 5px; FONT-SIZE: 9pt; FONT-FAMILY: Arial, arial; MARGIN-TOP: 5px
}
BODY {
	FONT-SIZE: 9pt; FONT-FAMILY: Arial, arial; MARGIN: 10px; LINE-HEIGHT: 1.4
}
</style>

<meta http-equiv="X-UA-Compatible" content="IE=5">
<meta http-equiv="X-UA-Compatible" content="IE=5">
<meta name="GENERATOR" content="MSHTML 10.00.9200.17556"></head>
<body>
<p>Hi users,</p>
<p>I have found a Memory leak issue in luabind :</p>
<p>&nbsp;</p>
<p>In file ./luabind/detail/instance_holder.hpp </p>
<p>template &lt;class T&gt;<br>void release_ownership(std::auto_ptr&lt;T&gt;&amp; p)<br>{<br>&nbsp;&nbsp;&nbsp; p.release();<br>}<br></p>
<p>Here p.release() returns a pointer which is getting leak.</p>
<p>Please look into the issue and share your important views.</p>
<p>&nbsp;</p>
<p>Thanks!!!</p>
<table id="confidentialsignimg">
<tbody>
<tr>
<td namo_lock="">
<p><img src="cid:A6X...@na..." border="0"></p></td></tr></tbody></table></body></html><img src='http://ext.samsung.net/mailcheck/SeenTimeChecker?do=d1c4c6a24968fb25e081ece56311f69730bef5bb275412ced7958ea385bb4703d0394d49cb338082f1bc9e894f4f495bed2705d6268c6898dd8aaa5ed8b0e8e4326bbdfb2ea96a2fcf878f9a26ce15a0' border=0 width=0 height=0 style='display:none'>

[luabind] Adding an overload for the assignment operator in lua for luabind classes

[Abhijit N. <abh...@gm...>]

Hi,

Lua does not allow the assignment operator to be overloaded and has no meta
function for it. I have got around this by using the proxy pattern and the
__index/__newindex meta methods.

Now I have begun using classes defined via luabind's object oriented system
thats exposed to Lua.

I am wondering if the C++ code for Luabind can be changed to allow the
assignment operator to be overloaded without changing the code for the Lua
interpretor itself.

Perhaps such a overload would call into a new meta-method name thats not
used by Lua such as '__assign()'

This would not conflict with any meta method that Lua already uses and
would apply only to instances of luabind classes.

I am guessing that the luabind::adl::object class needs to be changed, or
perhaps index_proxy. But I am not sufficiently familiar with how luabind
forwards calls to existing Lua meta-methods, to its objects.

Has anyone explored the C++ code in luabind that supports operator
overloading in Lua?

Edit: I see some attempts to add a new operator here:
https://github.com/decimad/luabind-deboostified/commit/55b1bd9217205253b41ab7d4746637ee5b0d276f

If I try the above with the assignment operator though, I do no see it
getting called in Lua. Are there any other changes needed in C++ for this?

http://stackoverflow.com/questions/33141507/adding-an-overload-for-the-assignment-operator-in-lua-for-luabind-classes

Thanks,

Abhi

[luabind] About make_function definition in make_function.hpp

[Baojiang S. <sho...@gm...>]

Hi guys, I have an question in reading luabind code. At the bottom of file
make_function.hpp is the definitions of two function:

template <class F, class Signature, class Policies>
object make_function(lua_State* L, F f, Signature, Policies)
{
typedef typename detail::as_vector<Signature>::type signature;

return detail::make_function_aux(
    L
  , new detail::function_object_impl&lt;F, signature, Policies&gt;(
        f, Policies()
    )
);

}

template <class F>
object make_function(lua_State* L, F f)
{
return make_function(L, detail::deduce_signature(f), detail::null_type());
}

In the statement make_function(L, detail::deduce_signature(f),
detail::null_type()) which only provide three args, but the above
make_function need four args. Why?

[luabind] No matching overload found

[Сергей В. <iva...@gm...>]

Why luabind can't use this function?

C++ code:
Vector3f createVector3f ( float x, float y, float z );

Lua Code:
function UiControl:setScale ( value )
log ( "UiControl:setScale: " .. value )
local s = createVector3f ( value, value, 1 ) --error
self.mesh:setScale ( s )
self.mesh:update ()
end

Output:
UiControl:setScale: 1
No matching overload found, candidates:
Vector3f createVector3f(custom [f],custom [f],custom [f])

I know, this code works:
local s = createVector3f ( 1, 1, 1 )
Why it doesn't when I pass an variable?

Point me, please, where to dig.

Re: [luabind] pass by ref, no matching overload found

[Сергей В. <iva...@gm...>]

Thanks. Worked.

2015-04-01 0:41 GMT+03:00 Christian N. <cn...@gm...>:

> On 2015-03-31 23:33 +0200, Сергей ВладимировичСергей Владимирович wrote:
>  > [...]
> >
> > I want to set tag for node from lua script:
> > node = scene:find ( "NewGameButton" )
> > node:setTag ( "scale", value )
> >
> > I get luabind error:
> > No matching overload found, candidates:
> > void setTag(Node&,std::string const&,std::string const&)
> >
> > But this line works fine
> > node:setTag ( "scale", "str_value" )
> >
> > How to get setTag working in both cases?
> >
>
> It seems that value is not a string. AFAIR luabind does not implicitly
> convert numbers to strings, so you should try
>
>      node:setTag ( "scale", tostring( value ) )
>
> where tostring() is a Lua standard library function
> (http://www.lua.org/manual/5.1/manual.html#pdf-tostring).
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming The Go Parallel Website,
> sponsored
> by Intel and developed in partnership with Slashdot Media, is your hub for
> all
> things parallel software development, from weekly thought leadership blogs
> to
> news, videos, case studies, tutorials and more. Take a look and join the
> conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> luabind-user mailing list
> lua...@li...
> https://lists.sourceforge.net/lists/listinfo/luabind-user
>

Re: [luabind] pass by ref, no matching overload found

[Christian N. <cn...@gm...>]

On 2015-03-31 23:33 +0200, Сергей ВладимировичСергей Владимирович wrote:
 > [...]
>
> I want to set tag for node from lua script:
> node = scene:find ( "NewGameButton" )
> node:setTag ( "scale", value )
>
> I get luabind error:
> No matching overload found, candidates:
> void setTag(Node&,std::string const&,std::string const&)
>
> But this line works fine
> node:setTag ( "scale", "str_value" )
>
> How to get setTag working in both cases?
>

It seems that value is not a string. AFAIR luabind does not implicitly 
convert numbers to strings, so you should try

     node:setTag ( "scale", tostring( value ) )

where tostring() is a Lua standard library function 
(http://www.lua.org/manual/5.1/manual.html#pdf-tostring).

[luabind] pass by ref, no matching overload found

[Сергей В. <iva...@gm...>]

I want to pass parameters in method by reference.

class Node : public EventReceiver
{
public:
virtual void setTag ( const std::string& name, const std::string& value )
...
};

And this is luabind code to expose Node to lua:
class_<Node, EventReceiver> ( "Node" )
.def ( constructor<> () )
.def ( "setTag", &Node::setTag )
...

I want to set tag for node from lua script:
node = scene:find ( "NewGameButton" )
node:setTag ( "scale", value )

I get luabind error:
No matching overload found, candidates:
void setTag(Node&,std::string const&,std::string const&)

But this line works fine
node:setTag ( "scale", "str_value" )

How to get setTag working in both cases?

Re: [luabind] attempt to concatenate field 'value' (a function value)

[Daniel S. <ma...@sq...>]

Just confirming that yes this fixed my real application to.  Thanks a bunch. 

On 1 November 2014 22:28:45 GMT+00:00, Daniel Squires <ma...@sq...> wrote:
>Brilliant thanks.  I can confirm that fixes my problem, at least in the
>test case.  I'll try my main app tomorrow. 
>
>On 1 November 2014 19:34:42 GMT+00:00, Andreas Grob
><and...@tu...> wrote:
>>I can confirm your error with luabind 0.9.1+dfsg-8, which is what Mint
>
>>17 is using.
>>An update of libluabind and libluabind-dev to 0.9.1+dfsg-9 (from
>debian
>>
>>sid) resolves the problem.
>>
>>Regards,
>>Andreas
>>
>>Am 01.11.2014 um 19:42 schrieb ma...@sq...:
>>> oops, I had missed that out of the simplified test case, however it
>>still
>>> isn't working for me after adding that in :(.
>>>
>>> I guess lua or luabind is broken on my system (Linux Mint 17)
>>>
>>>> Hello,
>>>>
>>>> Your Lua code should not be working at all, since no libraries are
>>>> loaded and print isn't even defined.
>>>> After adding luaL_openlibs(L); after creating the Lua state, it
>>works
>>>> fine for me:
>>>>
>>>> $ ./lua
>>>> value : 4
>>>>
>>>> Regards,
>>>> Andreas
>>>>
>>>>
>>>> Am 01.11.2014 um 18:45 schrieb ma...@sq...:
>>>>> Can anybody explain this for me? It used to work on an older
>system
>>with
>>>>> lua5.1.
>>>>>
>>>>> i'm now using lua5.2, luabind version us 0.9.1 (on both systems)
>>>>>
>>>>> g++ -o lua lua.cpp -lluabind -llua5.2 -ldl -I /usr/include/lua5.2
>>>>> ./lua
>>>>> lua runtime error
>>>>> [string "function test(t)..."]:2: attempt to concatenate field
>>'value'
>>>>> (a
>>>>> function value)
>>>>>
>>>>> extern "C" {
>>>>> #include "lua.h"
>>>>> #include "lualib.h"
>>>>> #include "lauxlib.h"
>>>>> }
>>>>>
>>>>> #include <luabind/luabind.hpp>
>>>>> #include <iostream>
>>>>>
>>>>> struct Test
>>>>> {
>>>>>     Test(int v) : value(v) {};
>>>>>     ~Test() {};
>>>>>     int value;
>>>>> };
>>>>>
>>>>>
>>>>> int DebuggerFunc(lua_State* L)
>>>>> {
>>>>> 	luabind::object error_msg(luabind::from_stack(L, -1));
>>>>> 	std::cerr << error_msg << std::endl;
>>>>> 	return 0;
>>>>> }
>>>>>
>>>>> int main() {
>>>>>     lua_State *L = luaL_newstate();
>>>>>     luabind::open(L);
>>>>>
>>>>>     luabind::module(L)
>>>>>     [
>>>>>       luabind::class_<Test>("Test")
>>>>>       .def(luabind::constructor<int>())
>>>>>       .def_readonly("value",&Test::value)
>>>>>     ];
>>>>>
>>>>>     luaL_dostring(
>>>>>       L,
>>>>>       "function test(t)\n"
>>>>>       "  print(\"value : \" .. t.value)\n"
>>>>>       "end\n"
>>>>>     );
>>>>>
>>>>>     Test t(4);
>>>>>
>>>>>     try {
>>>>>       luabind::call_function<int>(L, "test", &t);
>>>>>     }
>>>>>     catch (const luabind::error &er)
>>>>>     {
>>>>>       std::cerr << er.what() << std::endl;
>>>>>       lua_State* Ler=er.state();
>>>>>       DebuggerFunc(Ler);
>>>>>     }
>>>>>     catch (...)
>>>>>     {
>>>>>       std::cerr << "Unknown error!" << std::endl;
>>>>>     }
>>>>>     lua_close(L);
>>>>> }
>>>>>
>>>>>
>>>>>
>>------------------------------------------------------------------------------
>>>>> _______________________________________________
>>>>> luabind-user mailing list
>>>>> lua...@li...
>>>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>>
>>>>
>>------------------------------------------------------------------------------
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Re: [luabind] attempt to concatenate field 'value' (a function value)

[Daniel S. <ma...@sq...>]

Brilliant thanks.  I can confirm that fixes my problem, at least in the test case.  I'll try my main app tomorrow. 

On 1 November 2014 19:34:42 GMT+00:00, Andreas Grob <and...@tu...> wrote:
>I can confirm your error with luabind 0.9.1+dfsg-8, which is what Mint 
>17 is using.
>An update of libluabind and libluabind-dev to 0.9.1+dfsg-9 (from debian
>
>sid) resolves the problem.
>
>Regards,
>Andreas
>
>Am 01.11.2014 um 19:42 schrieb ma...@sq...:
>> oops, I had missed that out of the simplified test case, however it
>still
>> isn't working for me after adding that in :(.
>>
>> I guess lua or luabind is broken on my system (Linux Mint 17)
>>
>>> Hello,
>>>
>>> Your Lua code should not be working at all, since no libraries are
>>> loaded and print isn't even defined.
>>> After adding luaL_openlibs(L); after creating the Lua state, it
>works
>>> fine for me:
>>>
>>> $ ./lua
>>> value : 4
>>>
>>> Regards,
>>> Andreas
>>>
>>>
>>> Am 01.11.2014 um 18:45 schrieb ma...@sq...:
>>>> Can anybody explain this for me? It used to work on an older system
>with
>>>> lua5.1.
>>>>
>>>> i'm now using lua5.2, luabind version us 0.9.1 (on both systems)
>>>>
>>>> g++ -o lua lua.cpp -lluabind -llua5.2 -ldl -I /usr/include/lua5.2
>>>> ./lua
>>>> lua runtime error
>>>> [string "function test(t)..."]:2: attempt to concatenate field
>'value'
>>>> (a
>>>> function value)
>>>>
>>>> extern "C" {
>>>> #include "lua.h"
>>>> #include "lualib.h"
>>>> #include "lauxlib.h"
>>>> }
>>>>
>>>> #include <luabind/luabind.hpp>
>>>> #include <iostream>
>>>>
>>>> struct Test
>>>> {
>>>>     Test(int v) : value(v) {};
>>>>     ~Test() {};
>>>>     int value;
>>>> };
>>>>
>>>>
>>>> int DebuggerFunc(lua_State* L)
>>>> {
>>>> 	luabind::object error_msg(luabind::from_stack(L, -1));
>>>> 	std::cerr << error_msg << std::endl;
>>>> 	return 0;
>>>> }
>>>>
>>>> int main() {
>>>>     lua_State *L = luaL_newstate();
>>>>     luabind::open(L);
>>>>
>>>>     luabind::module(L)
>>>>     [
>>>>       luabind::class_<Test>("Test")
>>>>       .def(luabind::constructor<int>())
>>>>       .def_readonly("value",&Test::value)
>>>>     ];
>>>>
>>>>     luaL_dostring(
>>>>       L,
>>>>       "function test(t)\n"
>>>>       "  print(\"value : \" .. t.value)\n"
>>>>       "end\n"
>>>>     );
>>>>
>>>>     Test t(4);
>>>>
>>>>     try {
>>>>       luabind::call_function<int>(L, "test", &t);
>>>>     }
>>>>     catch (const luabind::error &er)
>>>>     {
>>>>       std::cerr << er.what() << std::endl;
>>>>       lua_State* Ler=er.state();
>>>>       DebuggerFunc(Ler);
>>>>     }
>>>>     catch (...)
>>>>     {
>>>>       std::cerr << "Unknown error!" << std::endl;
>>>>     }
>>>>     lua_close(L);
>>>> }
>>>>
>>>>
>>>>
>------------------------------------------------------------------------------
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>>>> luabind-user mailing list
>>>> lua...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>
>>>
>------------------------------------------------------------------------------
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>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>
>>
>>
>>
>------------------------------------------------------------------------------
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>
>
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Re: [luabind] attempt to concatenate field 'value' (a function value)

[Andreas G. <and...@tu...>]

I can confirm your error with luabind 0.9.1+dfsg-8, which is what Mint 
17 is using.
An update of libluabind and libluabind-dev to 0.9.1+dfsg-9 (from debian 
sid) resolves the problem.

Regards,
Andreas

Am 01.11.2014 um 19:42 schrieb ma...@sq...:
> oops, I had missed that out of the simplified test case, however it still
> isn't working for me after adding that in :(.
>
> I guess lua or luabind is broken on my system (Linux Mint 17)
>
>> Hello,
>>
>> Your Lua code should not be working at all, since no libraries are
>> loaded and print isn't even defined.
>> After adding luaL_openlibs(L); after creating the Lua state, it works
>> fine for me:
>>
>> $ ./lua
>> value : 4
>>
>> Regards,
>> Andreas
>>
>>
>> Am 01.11.2014 um 18:45 schrieb ma...@sq...:
>>> Can anybody explain this for me? It used to work on an older system with
>>> lua5.1.
>>>
>>> i'm now using lua5.2, luabind version us 0.9.1 (on both systems)
>>>
>>> g++ -o lua lua.cpp -lluabind -llua5.2 -ldl -I /usr/include/lua5.2
>>> ./lua
>>> lua runtime error
>>> [string "function test(t)..."]:2: attempt to concatenate field 'value'
>>> (a
>>> function value)
>>>
>>> extern "C" {
>>> #include "lua.h"
>>> #include "lualib.h"
>>> #include "lauxlib.h"
>>> }
>>>
>>> #include <luabind/luabind.hpp>
>>> #include <iostream>
>>>
>>> struct Test
>>> {
>>>     Test(int v) : value(v) {};
>>>     ~Test() {};
>>>     int value;
>>> };
>>>
>>>
>>> int DebuggerFunc(lua_State* L)
>>> {
>>> 	luabind::object error_msg(luabind::from_stack(L, -1));
>>> 	std::cerr << error_msg << std::endl;
>>> 	return 0;
>>> }
>>>
>>> int main() {
>>>     lua_State *L = luaL_newstate();
>>>     luabind::open(L);
>>>
>>>     luabind::module(L)
>>>     [
>>>       luabind::class_<Test>("Test")
>>>       .def(luabind::constructor<int>())
>>>       .def_readonly("value",&Test::value)
>>>     ];
>>>
>>>     luaL_dostring(
>>>       L,
>>>       "function test(t)\n"
>>>       "  print(\"value : \" .. t.value)\n"
>>>       "end\n"
>>>     );
>>>
>>>     Test t(4);
>>>
>>>     try {
>>>       luabind::call_function<int>(L, "test", &t);
>>>     }
>>>     catch (const luabind::error &er)
>>>     {
>>>       std::cerr << er.what() << std::endl;
>>>       lua_State* Ler=er.state();
>>>       DebuggerFunc(Ler);
>>>     }
>>>     catch (...)
>>>     {
>>>       std::cerr << "Unknown error!" << std::endl;
>>>     }
>>>     lua_close(L);
>>> }
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> _______________________________________________
>>> luabind-user mailing list
>>> lua...@li...
>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> luabind-user mailing list
>> lua...@li...
>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>
>
>
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Re: [luabind] attempt to concatenate field 'value' (a function value)

[<ma...@sq...>]

oops, I had missed that out of the simplified test case, however it still
isn't working for me after adding that in :(.

I guess lua or luabind is broken on my system (Linux Mint 17)

> Hello,
>
> Your Lua code should not be working at all, since no libraries are
> loaded and print isn't even defined.
> After adding luaL_openlibs(L); after creating the Lua state, it works
> fine for me:
>
> $ ./lua
> value : 4
>
> Regards,
> Andreas
>
>
> Am 01.11.2014 um 18:45 schrieb ma...@sq...:
>> Can anybody explain this for me? It used to work on an older system with
>> lua5.1.
>>
>> i'm now using lua5.2, luabind version us 0.9.1 (on both systems)
>>
>> g++ -o lua lua.cpp -lluabind -llua5.2 -ldl -I /usr/include/lua5.2
>> ./lua
>> lua runtime error
>> [string "function test(t)..."]:2: attempt to concatenate field 'value'
>> (a
>> function value)
>>
>> extern "C" {
>> #include "lua.h"
>> #include "lualib.h"
>> #include "lauxlib.h"
>> }
>>
>> #include <luabind/luabind.hpp>
>> #include <iostream>
>>
>> struct Test
>> {
>>    Test(int v) : value(v) {};
>>    ~Test() {};
>>    int value;
>> };
>>
>>
>> int DebuggerFunc(lua_State* L)
>> {
>> 	luabind::object error_msg(luabind::from_stack(L, -1));
>> 	std::cerr << error_msg << std::endl;
>> 	return 0;
>> }
>>
>> int main() {
>>    lua_State *L = luaL_newstate();
>>    luabind::open(L);
>>
>>    luabind::module(L)
>>    [
>>      luabind::class_<Test>("Test")
>>      .def(luabind::constructor<int>())
>>      .def_readonly("value",&Test::value)
>>    ];
>>
>>    luaL_dostring(
>>      L,
>>      "function test(t)\n"
>>      "  print(\"value : \" .. t.value)\n"
>>      "end\n"
>>    );
>>
>>    Test t(4);
>>
>>    try {
>>      luabind::call_function<int>(L, "test", &t);
>>    }
>>    catch (const luabind::error &er)
>>    {
>>      std::cerr << er.what() << std::endl;
>>      lua_State* Ler=er.state();
>>      DebuggerFunc(Ler);
>>    }
>>    catch (...)
>>    {
>>      std::cerr << "Unknown error!" << std::endl;
>>    }
>>    lua_close(L);
>> }
>>
>>
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> luabind-user mailing list
>> lua...@li...
>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>
>
> ------------------------------------------------------------------------------
> _______________________________________________
> luabind-user mailing list
> lua...@li...
> https://lists.sourceforge.net/lists/listinfo/luabind-user
>