November 2010 - Boost - lists.boost.org

Probing interest in a typed XML traversal library
by Sumant Tambe 28 Nov '10

28 Nov '10

Hello boosters! I'm interested in gauging interest in a typed XML traversal library that combines the succinctness of XPath with the type-safety of XML data-binding tools. I've been developing one such library called LEESA: Language for Embedded Query and Traversal <http://www.dre.vanderbilt.edu/LEESA>. LEESA has several capabilities: 1. Succinct and expressive XPath-like notation for writing object structure traversals 2. Supports child, parent, sibling, descendant, ancestor axes 3. Compile-time schema conformance checking 4. Supports GOF visitors and hierarchical visitors 5. Strategic Programming ... and more! Here are two quick examples comparing XPath and LEESA. More examples are available on the LEESA homepage. XPath expression: "/catalog/book/author/name/text()" LEESA expression: *std::vector<name> author_names = evaluate(root, catalog() >> book() >> author() >> name()); * XPath expression: "//name/text()" LEESA Expression: *std::vector<name> names = evaluate(root, catalog() >> DescendantsOf(catalog(), name())); * The above expressions are checked for schema-conformance at compile-time. LEESA builds these capabilities on top of existing XML data binding tools that generate C++ code from .xsd files. The general process of using LEESA is as follows: 1. Generate C++ classes using your favorite XML data binding tool 2. A python script that comes with LEESA adds a few functions in every generated C++ class. It generates a lot of typedefs and helper functions, which invoke tool generated code. This creates a bridge between LEESA and the code generated by the xml data binding tool. Currently it supports Code Synthesis's xsd and Universal Data Model (UDM) from Vanderbilt University as the underlying code generators. 3. The user includes LEESA.h in his/her C++ program (it is header-only), uses its programming model, compiles, and links with the tool generated code and libraries. So folks, please speak up if you are interested in having such a library in Boost. Thanks, Sumant.

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[Bug Sprint] Status for Sunday, November 28th.
by Marshall Clow 28 Nov '10

28 Nov '10

There were 62 changes to the trac database yesterday. [ I'd like to say "62 tickets were changed", but some tickets were changed more than once. ] Activities on the trac system yesterday: viboes 28 tickets marshall 9 tickets troyer 6 tickets ktchan 6 tickets Others 13 tickets General information about the bug sprint is here: https://svn.boost.org/trac/boost/wiki/BugSprintNov2010 General information about how the Trac system works is here: https://svn.boost.org/trac/boost/wiki/TicketWorkflow Overall bug count: November 26: 946 November 27: 939 November 28: 930 If you're looking for something to do, here's a list of 100 bugs that were created in 2008 or before: <https://svn.boost.org/trac/boost/query?status=assigned&status=new&status=re…> Top 10 components by ticket count: Component Tickets date_time 57 thread 53 Python 48 filesystem 41 build 40 asio 38 mpl 37 smart_ptr 37 program_options 28 uBLAS 28 Useful reports: https://svn.boost.org/trac/boost/report/1 -- full list of tickets https://svn.boost.org/trac/boost/report/18 -- ticket counts by owner https://svn.boost.org/trac/boost/report/19 -- ticket counts by component https://svn.boost.org/trac/boost/report/20 -- ticket counts by ticket type https://svn.boost.org/trac/boost/report/21 -- ticket counts by milestone

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[bind] Patch for Ticket #4532 make_adaptable undocumented
by Daniel Trebbien 27 Nov '10

27 Nov '10

Attached is a patch that fixes Ticket #4532 make_adaptable undocumented <https://svn.boost.org/trac/boost/ticket/4532>. Daniel

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[Bug Sprint] I'm looking at ticket #4791
by Marshall Clow 27 Nov '10

27 Nov '10

Unless someone objects.... -- Marshall

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[python] warnings removal
by Vicente BOTET 27 Nov '10

27 Nov '10

Hi, with gcc-4.3.4 there is a warning * warning: type attributes ignored after type is already defined gcc.compile.c++ bin.v2/libs/python/build/gcc-4.3.4/release/threading-multi/numeric.o In file included from ./boost/python/object/make_instance.hpp:9, from ./boost/python/object/make_ptr_instance.hpp:8, from ./boost/python/to_python_indirect.hpp:11, from ./boost/python/converter/arg_to_python.hpp:10, from ./boost/python/call.hpp:15, from ./boost/python/object_core.hpp:14, from ./boost/python/object.hpp:9, from ./boost/python/tuple.hpp:10, from ./boost/python/numeric.hpp:10, from libs\python\src\numeric.cpp:6: ./boost/python/object/instance.hpp:14: warning: type attributes ignored after type is already defined This warning can be removed by adding a forward declaration file. See attached patch. * warning: deprecated conversion from string constant to â€˜char*â€™ ./boost/python/object/instance.hpp:14: warning: type attributes ignored after type is already defined libs\python\src\object\class.cpp: In function â€˜int boost::python::property_init(PyObject*, PyObject*, PyObject*)â€™: libs\python\src\object\class.cpp:79: warning: deprecated conversion from string constant to â€˜char*â€™ libs\python\src\object\class.cpp:79: warning: deprecated conversion from string constant to â€˜char*â€™ libs\python\src\object\class.cpp:79: warning: deprecated conversion from string constant to â€˜char*â€™ libs\python\src\object\class.cpp:79: warning: deprecated conversion from string constant to â€˜char*â€™ This warning can be removed with attached patch. Can these patches be include in trunk? Best, Vicente

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[web] bad link for 1.45 release notes
by Vicente BOTET 27 Nov '10

27 Nov '10

Hi, The link in http://www.boost.org/community/review_schedule.html related to the Boost 1.45 Released point to the release notes of 1.44. Can this be corrected? Best, Vicente

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[python] more warnings removal
by Vicente BOTET 27 Nov '10

27 Nov '10

Hi again, here there is other warning and the associated patches D:\boost\trunk\libs\python\src\converter\builtin_converters.cpp:369: warning: â€˜boost::python::converter::::py_unicode_as_string_unaryfuncâ€™ defined but not used Best, Vicente

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[cygwin] warning "BOOST_CYGWIN" redefined
by Vicente BOTET 27 Nov '10

27 Nov '10

Hi, There is a warning in Boost.Config under CYGWIN that appears to much times as the config files is used a lot. gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.3.4/release/link-static/threading-m ulti/wave_config_constant.o In file included from ./boost/config.hpp:53, from ./boost/wave/wave_config.hpp:16, from libs\wave\src\wave_config_constant.cpp:20: ./boost/config/platform/cygwin.hpp:10:1: warning: "BOOST_CYGWIN" redefined In file included from ./boost/config.hpp:35, from ./boost/wave/wave_config.hpp:16, from libs\wave\src\wave_config_constant.cpp:20: ./boost/config/compiler/gcc.hpp:96:1: warning: this is the location of the previ ous definition John, I have attached a patch. for the trunk. Could it be include? Best, Vicente

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[python] still compile error using pyhton 3.x
by Christopher Lux 27 Nov '10

27 Nov '10

Hi, since 1.44 boost python does not compile anymore using python 3.x (after a GSOC project it worked fine with python 3.1). I reported this after the 1.44 release and i thought someone had fixed it. This is really sad to see this great library not working anymore. These are the errors generated: compile-c-c++ e:\devel\_ext\boost_out_64\out\boost\bin.v2\libs\python\build\msvc-10.0\debug\address-model-64\threading-multi\object\function_doc_signature.obj function_doc_signature.cpp E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C2039: 'PyInt_FromLong' : is not a member of '`global namespace'' E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C3861: 'PyInt_FromLong': identifier not found E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C2065: 'PyInt_Type' : undeclared identifier E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C2039: 'PyInt_FromLong' : is not a member of '`global namespace'' E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C3861: 'PyInt_FromLong': identifier not found E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C2065: 'PyInt_Type' : undeclared identifier E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C2039: 'PyInt_FromLong' : is not a member of '`global namespace'' E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(138) : error C3861: 'PyInt_FromLong': identifier not found E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C2039: 'PyInt_FromLong' : is not a member of '`global namespace'' E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C3861: 'PyInt_FromLong': identifier not found E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C2065: 'PyInt_Type' : undeclared identifier E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C2039: 'PyInt_FromLong' : is not a member of '`global namespace'' E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C3861: 'PyInt_FromLong': identifier not found E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C2065: 'PyInt_Type' : undeclared identifier E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C2039: 'PyInt_FromLong' : is not a member of '`global namespace'' E:\devel\boost_1_45_0\boost/python/converter/builtin_converters.hpp(144) : error C3861: 'PyInt_FromLong': identifier not found E:\devel\boost_1_45_0\boost/python/detail/caller.hpp(55) : warning C4244: 'return' : conversion from 'Py_ssize_t' to 'unsigned int', possible loss of data libs\python\src\object\function_doc_signature.cpp(287) : warning C4244: 'initializing' : conversion from 'boost::python::ssize_t' to 'int', possible loss of data libs\python\src\object\function_doc_signature.cpp(294) : warning C4244: '=' : conversion from 'boost::python::ssize_t' to 'int', possible loss of data libs\python\src\object\function_doc_signature.cpp(303) : warning C4244: '=' : conversion from 'boost::python::ssize_t' to 'int', possible loss of data

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[1.45.0] PDF build of documentation available
by John Maddock 26 Nov '10

26 Nov '10

The PDF build of the documentation for Boost-1.45 is now available for download from https://sourceforge.net/projects/boost/files/boost-docs/1.45.0/ Enjoy, John Maddock.

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