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140 Commits

Author SHA1 Message Date
nobody
e32901304d This commit was manufactured by cvs2svn to create tag
'Version_1_22_0'.

[SVN r10239]
2001-05-28 15:01:00 +00:00
Ralf W. Grosse-Kunstleve
66da2339d4 Fix accident: restore main version.
[SVN r10210]
2001-05-24 08:51:05 +00:00
Ralf W. Grosse-Kunstleve
294254efbb Fix accident: restore main version.
[SVN r10209]
2001-05-24 08:43:56 +00:00
Ralf W. Grosse-Kunstleve
188597ecaf fixes tested with vc60, tru64cxx, irixCC, gcc2952
[SVN r10208]
2001-05-24 08:28:46 +00:00
Dave Abrahams
d04f613c41 Fix up internal links
[SVN r10122]
2001-05-18 15:12:30 +00:00
Ralf W. Grosse-Kunstleve
25320cd0e0 Removed: unnecessary key < 0 test.
[SVN r10113]
2001-05-14 21:43:34 +00:00
Ralf W. Grosse-Kunstleve
00b4f09e8a Check indices passed to __getitem__, __setitem__, __delitem__
[SVN r10009]
2001-05-05 01:06:33 +00:00
Beman Dawes
fb8d9edfdf Change all eGroups references to YahooGroups
[SVN r9979]
2001-04-25 00:24:50 +00:00
Ralf W. Grosse-Kunstleve
349b9bb2bf use reserved symbol for detecting sgi
[SVN r9835]
2001-04-18 19:13:11 +00:00
Ralf W. Grosse-Kunstleve
cbff11296b cleaning up cvs attic mess
[SVN r9831]
2001-04-18 01:29:23 +00:00
Ralf W. Grosse-Kunstleve
dc462cdc1f cleaning up cvs attic mess
[SVN r9830]
2001-04-18 01:27:51 +00:00
Ralf W. Grosse-Kunstleve
22024e7c1f trying to clean cvs attic mess...
[SVN r9829]
2001-04-18 01:24:34 +00:00
Ralf W. Grosse-Kunstleve
ebb0145256 trying to clean cvs attic mess...
[SVN r9828]
2001-04-18 01:23:50 +00:00
Ralf W. Grosse-Kunstleve
c3215d0ba5 enhancement
[SVN r9827]
2001-04-17 21:30:05 +00:00
Ralf W. Grosse-Kunstleve
da83f20a28 stray getting_started3 references removed.
[SVN r9826]
2001-04-17 20:02:20 +00:00
Ralf W. Grosse-Kunstleve
ad4b0fff56 moved from branch ralf_grosse_kunstleve to trunk
[SVN r9825]
2001-04-17 19:55:11 +00:00
Ralf W. Grosse-Kunstleve
62b90206e8 More organized presentation.
[SVN r9824]
2001-04-17 19:52:44 +00:00
Ralf W. Grosse-Kunstleve
38ac4fe849 cross-module mods
[SVN r9823]
2001-04-17 19:51:30 +00:00
Ralf W. Grosse-Kunstleve
fa7b6591cf moved from branch ralf_grosse_kunstleve to trunk (was cross_module_dependencies.html)
[SVN r9822]
2001-04-17 19:49:42 +00:00
Ralf W. Grosse-Kunstleve
fde432601a workaround for irix_CC problem.
[SVN r9821]
2001-04-17 19:46:15 +00:00
Ralf W. Grosse-Kunstleve
0c954dde27 moved from branch ralf_grosse_kunstleve to trunk
[SVN r9820]
2001-04-17 19:42:35 +00:00
Ralf W. Grosse-Kunstleve
b5a86a9045 cross_module mods
[SVN r9819]
2001-04-17 19:38:20 +00:00
Ralf W. Grosse-Kunstleve
ef7c437957 moved from branch ralf_grosse_kunstleve to trunk
[SVN r9817]
2001-04-17 19:31:00 +00:00
Ralf W. Grosse-Kunstleve
8158a509c9 moved from branch ralf_grosse_kunstleve to trunk
[SVN r9816]
2001-04-17 19:20:31 +00:00
Ralf W. Grosse-Kunstleve
dc520c6c32 Author included
[SVN r9815]
2001-04-17 19:04:16 +00:00
Ralf W. Grosse-Kunstleve
907033f725 Obsolete files removed.
[SVN r9814]
2001-04-17 19:00:43 +00:00
Ralf W. Grosse-Kunstleve
533a005764 moved from branch ralf_grosse_kunstleve to trunk
[SVN r9813]
2001-04-17 18:53:38 +00:00
Ralf W. Grosse-Kunstleve
9ee563b864 Comment added with reference to cross_module.hpp
[SVN r9812]
2001-04-17 18:51:17 +00:00
Ralf W. Grosse-Kunstleve
748c118ea8 added: from_python std::string type checking
[SVN r9727]
2001-04-05 17:46:24 +00:00
Ralf W. Grosse-Kunstleve
69e69a77d8 temp file removed after branching.
[SVN r9691]
2001-04-01 13:49:05 +00:00
Ralf W. Grosse-Kunstleve
5a40cec1ed temp file before branching
[SVN r9689]
2001-04-01 13:47:25 +00:00
Ralf W. Grosse-Kunstleve
01bcd460da temp files removed after branching.
[SVN r9623]
2001-03-21 02:35:32 +00:00
Ralf W. Grosse-Kunstleve
2a96c9f9ee temp file before branching
[SVN r9621]
2001-03-21 02:33:27 +00:00
Ralf W. Grosse-Kunstleve
f610e31a87 temp files removed after branching.
[SVN r9619]
2001-03-21 01:15:53 +00:00
Ralf W. Grosse-Kunstleve
4ec0b61de5 Now using BOOST_PYTHON_MODULE_INIT.
[SVN r9617]
2001-03-21 01:09:17 +00:00
Ralf W. Grosse-Kunstleve
c7d7cec281 temp files removed after branching.
[SVN r9616]
2001-03-21 01:07:07 +00:00
Ralf W. Grosse-Kunstleve
c4775a581e temp files before branching
[SVN r9615]
2001-03-21 01:05:30 +00:00
Ralf W. Grosse-Kunstleve
591eaeaafb VC++ 6.0 makefile; filemgr.py used by all ralf_grosse_kunstleve makefiles.
[SVN r9602]
2001-03-20 02:16:08 +00:00
Ralf W. Grosse-Kunstleve
1f45a846c6 VC++ 6.0 fixes and misc. other modifications.
[SVN r9601]
2001-03-20 02:13:28 +00:00
Ralf W. Grosse-Kunstleve
db943b4109 temp file removed after branching.
[SVN r9600]
2001-03-20 02:08:24 +00:00
Ralf W. Grosse-Kunstleve
098eadefe0 temp file before branching
[SVN r9599]
2001-03-20 02:07:39 +00:00
Dave Abrahams
13b2e072d2 Remove const qualifications that will confuse VC++'s buggy brain
[SVN r9567]
2001-03-16 21:56:41 +00:00
Beman Dawes
c068a300f4 template file is not longer needed, causes "broken links" messages
[SVN r9562]
2001-03-15 16:05:25 +00:00
Beman Dawes
60b91ac678 1.21.1 run up, including new download instructions and fix broken hyperlinks
[SVN r9557]
2001-03-14 15:11:55 +00:00
Ralf W. Grosse-Kunstleve
c979ab01af temp files removed after branching.
[SVN r9551]
2001-03-13 00:03:58 +00:00
Ralf W. Grosse-Kunstleve
012b4025a4 temp files before branching
[SVN r9549]
2001-03-13 00:01:06 +00:00
Ralf W. Grosse-Kunstleve
ff04d9f03c Minute enhancement.
[SVN r9547]
2001-03-12 19:34:14 +00:00
Ralf W. Grosse-Kunstleve
ed34cd45f1 Python 1.5.2 fixes
[SVN r9546]
2001-03-12 19:32:40 +00:00
Dave Abrahams
7dc8fab961 11 Mar 01 std::string *MAY* include nulls (Alex Martelli)
[SVN r9544]
2001-03-11 21:29:31 +00:00
Dave Abrahams
14acb1af8c Fix bugs (m_self => self)
[SVN r9539]
2001-03-10 19:09:10 +00:00
Ralf W. Grosse-Kunstleve
678fa006de Copyright notice & minor fixes.
[SVN r9536]
2001-03-10 08:23:37 +00:00
Dave Abrahams
f5416ebce0 Fixed some doc bugs and improved an example
[SVN r9533]
2001-03-10 00:36:03 +00:00
Ralf W. Grosse-Kunstleve
585063f6e1 Small enhancements.
[SVN r9532]
2001-03-09 20:04:56 +00:00
Ralf W. Grosse-Kunstleve
494f12090f Use only one <h1> (although the validator did not complain).
[SVN r9531]
2001-03-09 19:02:12 +00:00
Ralf W. Grosse-Kunstleve
55321b8778 HTML 4.0 Strict fixes.
[SVN r9530]
2001-03-09 18:59:59 +00:00
Ralf W. Grosse-Kunstleve
a6b0fa546a temp file removed after branching.
[SVN r9516]
2001-03-09 02:41:16 +00:00
Ralf W. Grosse-Kunstleve
33ea0dbdee temp file before branching
[SVN r9515]
2001-03-09 02:40:06 +00:00
Dave Abrahams
a559480716 py_cpp => Boost.Python
[SVN r9485]
2001-03-08 03:01:29 +00:00
Ralf W. Grosse-Kunstleve
bdbd9a0f5f class_builder<your_class> -> class_builder&lt;your_class&gt;
[SVN r9484]
2001-03-08 01:32:12 +00:00
Dave Abrahams
945344b3cd *** empty log message ***
[SVN r9483]
2001-03-07 23:31:32 +00:00
Dave Abrahams
5759ce9ba0 no message
[SVN r9482]
2001-03-07 22:27:22 +00:00
Dave Abrahams
a350b666fa Added BOOST_PYTHON_MODULE_INIT
[SVN r9475]
2001-03-07 03:56:25 +00:00
Dave Abrahams
041409d715 use BOOST_PYTHON_MODULE_INIT
[SVN r9473]
2001-03-07 03:53:56 +00:00
Dave Abrahams
98b31ed073 use BOOST_PYTHON_MODULE_INIT, update getting_started2 for better documentation
[SVN r9472]
2001-03-07 03:53:14 +00:00
Dave Abrahams
00cea4ff83 Added getting_started targets
[SVN r9471]
2001-03-07 03:40:47 +00:00
Dave Abrahams
617bcdac9f Major doc updates
[SVN r9470]
2001-03-07 03:39:31 +00:00
Dave Abrahams
116b3db1d1 Fixed typo in use of "PYTHON_LIB"
[SVN r9467]
2001-03-06 20:55:09 +00:00
Ralf W. Grosse-Kunstleve
53d2398e06 remove temp files after branching.
[SVN r9459]
2001-03-06 02:45:39 +00:00
Ralf W. Grosse-Kunstleve
dd0e42cf72 temp files before branching
[SVN r9457]
2001-03-06 02:44:32 +00:00
Dave Abrahams
b0d6d40c2a Suppress warnings under Cygwin with Python 2.0
[SVN r9456]
2001-03-06 01:14:47 +00:00
Dave Abrahams
2d568b1c0f Fixed a bug which prevented auto_ptr values from being converted to_python
[SVN r9455]
2001-03-06 01:13:35 +00:00
Ralf W. Grosse-Kunstleve
5b13e75fa5 temp file removed after branching.
[SVN r9454]
2001-03-06 00:06:55 +00:00
Ralf W. Grosse-Kunstleve
23725680c9 temp file before branching
[SVN r9453]
2001-03-06 00:05:41 +00:00
Ralf W. Grosse-Kunstleve
f49141f71e temp file removed after branching
[SVN r9452]
2001-03-06 00:04:28 +00:00
Ralf W. Grosse-Kunstleve
fdff5e33b3 temp file for branching
[SVN r9451]
2001-03-06 00:02:01 +00:00
Ralf W. Grosse-Kunstleve
149cc499ed Remove spurious ";"
[SVN r9450]
2001-03-05 23:46:43 +00:00
Ralf W. Grosse-Kunstleve
2e145ea916 Use file name "libboost_python.a"; rename makefiles.
[SVN r9449]
2001-03-05 23:41:37 +00:00
Dave Abrahams
1edec9ff89 no message
[SVN r9443]
2001-03-05 14:41:57 +00:00
Dave Abrahams
a559a371b1 enable null pointer <=> None conversions
[SVN r9439]
2001-03-05 03:48:38 +00:00
Dave Abrahams
7d29c6a0f7 tests for null pointer <=> None conversions
[SVN r9438]
2001-03-05 03:44:46 +00:00
Dave Abrahams
5ad51c36fb Turned off "enable minimal rebuild", which causes INTERNAL COMPILER ERRORs
[SVN r9437]
2001-03-05 03:43:10 +00:00
Ralf W. Grosse-Kunstleve
03dd2883f7 file name change: test.so -> boost_python_test.so
[SVN r9426]
2001-03-04 17:39:14 +00:00
Dave Abrahams
7208104122 Changed name of extension module so it would work with DebugPython, fixed
exception message checking to work with Python 2.0


[SVN r9421]
2001-03-04 16:02:46 +00:00
Dave Abrahams
405710e635 Changed name of extension module so it would work with DebugPython, eliminated
useless test that aggravated MSVC


[SVN r9420]
2001-03-04 15:59:52 +00:00
Dave Abrahams
f6ba5a41da Use PyObject_INIT() instead of trying to hand-initialize
[SVN r9419]
2001-03-04 15:57:47 +00:00
Dave Abrahams
af6cfd0ea8 std::complex<> fixes for MSVC
[SVN r9418]
2001-03-04 15:56:38 +00:00
Ralf W. Grosse-Kunstleve
a3f822b7d3 Documentation for pickle support.
[SVN r9417]
2001-03-04 15:56:07 +00:00
Dave Abrahams
afdaa4d0d8 Rolled in const_cast from Dragon fork
[SVN r9416]
2001-03-04 15:55:35 +00:00
Dave Abrahams
bf5eec727e Added DebugPython target
[SVN r9415]
2001-03-04 15:53:00 +00:00
Dave Abrahams
f82151f925 no message
[SVN r9414]
2001-03-04 15:48:55 +00:00
Dave Abrahams
4b926b7c7f Changed library name to libboost_python.a, various cleanups, attempted Cygwin
compatibility. Still needs testing on Linux.


[SVN r9413]
2001-03-04 15:48:50 +00:00
Dave Abrahams
4aa4f1c3b3 Added DebugPython target; cleaned up some mess introduced by others
[SVN r9412]
2001-03-04 15:45:02 +00:00
Dave Abrahams
71aff9f0e8 Changed library name to libboost_python.a
[SVN r9411]
2001-03-04 15:41:47 +00:00
Dave Abrahams
a40daca9ef *** empty log message ***
[SVN r9410]
2001-03-04 15:14:04 +00:00
Dave Abrahams
0b97d9bae5 Some fixes so it will compile with Intel C++
[SVN r9409]
2001-03-04 15:12:30 +00:00
Dave Abrahams
28e6a84acb Fixed std::complex<> stuff to work with MSVC
[SVN r9408]
2001-03-04 15:10:16 +00:00
Ralf W. Grosse-Kunstleve
fc62d3b44e New Makefiles for tru64_cxx, linux_gcc, mingw32.
[SVN r9400]
2001-03-03 14:46:26 +00:00
Ralf W. Grosse-Kunstleve
b06d9e50eb added: pickle safety measures; bug fix: use bound_function::create()
[SVN r9399]
2001-03-03 12:55:53 +00:00
Ralf W. Grosse-Kunstleve
1d4427c056 "T" replaced by "Held" to reduce chances of name clashes.
[SVN r9398]
2001-03-03 12:05:15 +00:00
Ralf W. Grosse-Kunstleve
51d60a6035 added: converters for [plain] char and std::complex
[SVN r9397]
2001-03-03 11:48:52 +00:00
Ralf W. Grosse-Kunstleve
f5fa4a460a Wrong file name replaced (instance.hpp -> singleton.hpp).
[SVN r9390]
2001-03-03 10:22:35 +00:00
Dave Abrahams
977841a7f3 Use PyObject_INIT() instead of hand-initializing objects
[SVN r9375]
2001-03-02 01:48:30 +00:00
Ralf W. Grosse-Kunstleve
b000c75947 Fix for python::tuple.set_item() memory leak.
[SVN r9316]
2001-02-23 08:58:32 +00:00
Ralf W. Grosse-Kunstleve
f3d9193743 Fix for linux gcc-2.95.2
[SVN r9023]
2001-02-08 01:54:59 +00:00
Ralf W. Grosse-Kunstleve
0d04bf8e34 Remove example files that were accidentally added to the main branch.
[SVN r9017]
2001-02-07 23:58:44 +00:00
Ralf W. Grosse-Kunstleve
1d17690f69 Add back old example files that were accidentally removed from the main branch.
[SVN r9016]
2001-02-07 23:50:41 +00:00
Dave Abrahams
4d19be8ea4 PyExtensionClassConverters<Foo> -> python_extension_class_converters&ltFoo&gt
[SVN r8968]
2001-02-06 03:08:00 +00:00
Dave Abrahams
1d4dfdf271 converted <> to &lt;&gt;
[SVN r8954]
2001-02-05 23:28:01 +00:00
Ralf W. Grosse-Kunstleve
f24a95c917 fix for reference count bug.
[SVN r8835]
2001-01-31 19:27:17 +00:00
Ralf W. Grosse-Kunstleve
e508842da6 BPL support for exporting/importing class wrappers.
[SVN r8788]
2001-01-27 17:35:02 +00:00
Dave Abrahams
b0d9bbc0b1 Another stupid typo fix by Ralf W. Grosse-Kunstleve
[SVN r8745]
2001-01-23 22:41:46 +00:00
Dave Abrahams
6238770324 Added a fix from Ralf W. Grosse-Kunstleve
[SVN r8724]
2001-01-22 22:58:37 +00:00
Dave Abrahams
a8641c69cc A bug fix that I failed to check in long ago for the use of strstream
[SVN r8666]
2001-01-21 05:29:26 +00:00
John Maddock
7d9332e94f added directure structure proposal
[SVN r8504]
2000-12-30 11:28:30 +00:00
Dave Abrahams
7ca17b7bd9 Fixed links to avoid www.pythonlabs.com
[SVN r8455]
2000-12-12 03:37:33 +00:00
Dave Abrahams
e5670d5e3c Correct the generated filenames
[SVN r8444]
2000-12-10 03:42:28 +00:00
Dave Abrahams
826c1bd894 Correct asynchrony with python generator
[SVN r8442]
2000-12-10 03:41:32 +00:00
Beman Dawes
7ea7f87a9f Fixed broken link
[SVN r8401]
2000-12-08 15:12:31 +00:00
Dave Abrahams
b91d11431d Applied fixes for como courtesy of Jens Maurer.
[SVN r8375]
2000-12-01 02:27:06 +00:00
Dave Abrahams
ff31b16285 Fixed __module__ name extraction logic so that when a module is not initializing the module name comes from the global __name__.
[SVN r8362]
2000-11-30 04:53:31 +00:00
Dave Abrahams
81cf5333c3 Added module() function to get the module being built
Added initializing() function to distinguish whether a module is initializing
Changed logic so that multiple non-overlapping module_builders() may be constructed. This fixes a bug when BPL is built as a shared lib.


[SVN r8361]
2000-11-30 04:51:05 +00:00
Dave Abrahams
9dca983e33 changed name of extension_class_coerce to standard_coerce.
[SVN r8358]
2000-11-29 14:18:37 +00:00
Dave Abrahams
0f43a2fe9b changed name of extension_class_coerce to standard_coerce.
[SVN r8357]
2000-11-29 13:42:45 +00:00
Dave Abrahams
ecdf8e1591 changed name of extension_class_coerce to standard_coerce,
applied Ullrich's documentation fix for standard_coerce.


[SVN r8356]
2000-11-29 13:41:18 +00:00
Ullrich Köthe
8a5de60b33 fixed html bugs recovered by "validator.w3.org"
[SVN r8353]
2000-11-28 21:38:21 +00:00
Ullrich Köthe
8637e270a9 minor improvements, fix of typos
[SVN r8352]
2000-11-28 21:22:21 +00:00
Dave Abrahams
c278310d1b Fix for compatibility with STLport using native iostreams
[SVN r8351]
2000-11-28 05:19:10 +00:00
Dave Abrahams
7f58e66754 removed non-portable but beautiful &ldquo;/&rdquo;
[SVN r8349]
2000-11-28 05:17:55 +00:00
Dave Abrahams
4e27f8de27 boost-ification
[SVN r8347]
2000-11-28 05:17:07 +00:00
Dave Abrahams
445b0438a2 bug fix
[SVN r8345]
2000-11-28 04:42:46 +00:00
Dave Abrahams
23441191c3 boost-ification
[SVN r8342]
2000-11-27 12:57:10 +00:00
Dave Abrahams
57dd8ff535 boost-ification
[SVN r8340]
2000-11-27 08:04:05 +00:00
Dave Abrahams
01e60ac711 Comeau Compatibility
[SVN r8339]
2000-11-27 07:59:10 +00:00
Dave Abrahams
89760f95f1 boost-ification
[SVN r8338]
2000-11-27 07:54:02 +00:00
Dave Abrahams
c44498ea69 boost-ification
[SVN r8337]
2000-11-27 07:53:09 +00:00
Dave Abrahams
16c12f1830 boost-ification
[SVN r8336]
2000-11-27 07:23:39 +00:00
Dave Abrahams
308f3acb46 boost-ification
[SVN r8335]
2000-11-27 07:02:14 +00:00
Dave Abrahams
6691261130 This commit was generated by cvs2svn to compensate for changes in r715,
which included commits to RCS files with non-trunk default branches.


[SVN r8332]
2000-11-27 06:57:31 +00:00
Dave Abrahams
8ab19a2354 Undo CVS mistake
[SVN r8330]
2000-11-26 16:42:51 +00:00
Dave Abrahams
2e5d8dbff7 This commit was generated by cvs2svn to compensate for changes in r711,
which included commits to RCS files with non-trunk default branches.


[SVN r8328]
2000-11-26 15:49:26 +00:00
95 changed files with 8404 additions and 925 deletions

241
build/bpl_static.dsp Normal file
View File

@@ -0,0 +1,241 @@
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!MESSAGE "bpl_static - Win32 Debug" (based on "Win32 (x86) Static Library")
!MESSAGE "bpl_static - Win32 DebugPython" (based on "Win32 (x86) Static Library")
!MESSAGE
# Begin Project
# PROP AllowPerConfigDependencies 0
# PROP Scc_ProjName ""
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!IF "$(CFG)" == "bpl_static - Win32 Release"
# PROP BASE Use_MFC 0
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# PROP BASE Output_Dir "Release"
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# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "Release"
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LIB32=link.exe -lib
# ADD BASE LIB32 /nologo
# ADD LIB32 /nologo
!ELSEIF "$(CFG)" == "bpl_static - Win32 Debug"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
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# PROP Use_Debug_Libraries 1
# PROP Output_Dir "Debug"
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# ADD RSC /l 0x409 /d "_DEBUG"
BSC32=bscmake.exe
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# ADD LIB32 /nologo
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# Name "bpl_static - Win32 DebugPython"
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Microsoft Developer Studio Workspace File, Format Version 6.00
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###############################################################################
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###############################################################################
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{{{
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Package=<4>
{{{
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Project_Dep_Name bpl_static
End Project Dependency
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###############################################################################
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Package=<5>
{{{
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Package=<4>
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###############################################################################
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Package=<5>
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BIN
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# Revision History:
# 17 Apr 01 include cross-module support, compile getting_started1 (R.W. Grosse-Kunstleve) UNTESTED!
# 06 Mar 01 Fixed typo in use of "PYTHON_LIB" (Dave Abrahams)
# 04 Mar 01 Changed library name to libboost_python.a (David Abrahams)
LIBSRC = \
classes.cpp \
conversions.cpp \
cross_module.cpp \
extension_class.cpp \
functions.cpp \
init_function.cpp \
module_builder.cpp \
objects.cpp \
types.cpp
LIBOBJ = $(LIBSRC:.cpp=.o)
OBJ = $(LIBOBJ)
ifeq "$(OS)" "Windows_NT"
PYTHON_LIB=c:/tools/python/libs/python15.lib
INC = -Ic:/cygnus/usr/include/g++-3 -Ic:/cygnus/usr/include -Ic:/boost -Ic:/tools/python/include
MODULE_EXTENSION=dll
else
INC = -I/usr/local/include/python1.5
MODULE_EXTENSION=so
endif
%.o: ../src/%.cpp
como --pic $(INC) -o $*.o -c $<
%.d: ../src/%.cpp
@echo creating $@
@set -e; como -M $(INC) -c $< \
| sed 's/\($*\)\.o[ :]*/\1.o $@ : /g' > $@; \
[ -s $@ ] || rm -f $@
getting_started1: getting_started1.o libboost_python.a
como-dyn-link -o ../example/getting_started1.$(MODULE_EXTENSION) $(PYTHON_LIB) getting_started1.o -L. -lboost_python
ln -s ../test/doctest.py ../example
python ../example/test_getting_started1.py
getting_started1.o: ../example/getting_started1.cpp
como --pic $(INC) -o $*.o -c $<
clean:
rm -rf *.o *.$(MODULE_EXTENSION) *.a *.d *.pyc *.bak a.out
libboost_python.a: $(LIBOBJ)
rm -f libboost_python.a
ar cq libboost_python.a $(LIBOBJ)
DEP = $(OBJ:.o=.d)
ifneq "$(MAKECMDGOALS)" "clean"
include $(DEP)
endif

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# Microsoft Developer Studio Project File - Name="example1" - Package Owner=<4>
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# Begin Project
# PROP AllowPerConfigDependencies 0
# PROP Scc_ProjName ""
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CPP=cl.exe
MTL=midl.exe
RSC=rc.exe
!IF "$(CFG)" == "example1 - Win32 Release"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 0
# PROP BASE Output_Dir "Release"
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# PROP Ignore_Export_Lib 0
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# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "EXAMPLE1_EXPORTS" /YX /FD /c
# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\..\..\.." /I "c:\tools\python\include" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "EXAMPLE1_EXPORTS" /YX /FD /c
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LINK32=link.exe
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# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386 /out:"Release/hello.dll" /libpath:"c:\tools\python\libs"
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# PROP BASE Use_MFC 0
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# PROP Use_Debug_Libraries 1
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# ADD BASE CPP /nologo /MDd /W3 /Gm /GR /GX /Zi /Od /I "..\..\..\.." /I "c:\tools\python\include" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "EXAMPLE1_EXPORTS" /YX /FD /GZ /c
# ADD CPP /nologo /MDd /W3 /Gm- /GR /GX /Zi /Od /I "..\..\..\.." /I "c:\tools\python\include" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "EXAMPLE1_EXPORTS" /D "BOOST_DEBUG_PYTHON" /YX /FD /GZ /EHs /c
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# Begin Group "Source Files"
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132
build/filemgr.py Normal file
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# Revision history:
# 12 Apr 01 use os.path, shutil
# Initial version: R.W. Grosse-Kunstleve
bpl_src = "/libs/python/src"
bpl_tst = "/libs/python/test"
bpl_exa = "/libs/python/example"
files = (
bpl_src + "/classes.cpp",
bpl_src + "/conversions.cpp",
bpl_src + "/extension_class.cpp",
bpl_src + "/functions.cpp",
bpl_src + "/init_function.cpp",
bpl_src + "/module_builder.cpp",
bpl_src + "/objects.cpp",
bpl_src + "/types.cpp",
bpl_src + "/cross_module.cpp",
bpl_tst + "/comprehensive.cpp",
bpl_tst + "/comprehensive.hpp",
bpl_tst + "/comprehensive.py",
bpl_tst + "/doctest.py",
bpl_exa + "/abstract.cpp",
bpl_exa + "/getting_started1.cpp",
bpl_exa + "/getting_started2.cpp",
bpl_exa + "/simple_vector.cpp",
bpl_exa + "/do_it_yourself_converters.cpp",
bpl_exa + "/pickle1.cpp",
bpl_exa + "/pickle2.cpp",
bpl_exa + "/pickle3.cpp",
bpl_exa + "/test_abstract.py",
bpl_exa + "/test_getting_started1.py",
bpl_exa + "/test_getting_started2.py",
bpl_exa + "/test_simple_vector.py",
bpl_exa + "/test_do_it_yourself_converters.py",
bpl_exa + "/test_pickle1.py",
bpl_exa + "/test_pickle2.py",
bpl_exa + "/test_pickle3.py",
bpl_exa + "/noncopyable.h",
bpl_exa + "/noncopyable_export.cpp",
bpl_exa + "/noncopyable_import.cpp",
bpl_exa + "/dvect.h",
bpl_exa + "/dvect.cpp",
bpl_exa + "/dvect_conversions.cpp",
bpl_exa + "/dvect_defs.cpp",
bpl_exa + "/ivect.h",
bpl_exa + "/ivect.cpp",
bpl_exa + "/ivect_conversions.cpp",
bpl_exa + "/ivect_defs.cpp",
bpl_exa + "/tst_noncopyable.py",
bpl_exa + "/tst_dvect1.py",
bpl_exa + "/tst_dvect2.py",
bpl_exa + "/tst_ivect1.py",
bpl_exa + "/tst_ivect2.py",
bpl_exa + "/test_cross_module.py",
)
defs = (
"boost_python_test",
"abstract",
"getting_started1",
"getting_started2",
"simple_vector",
"do_it_yourself_converters",
"pickle1",
"pickle2",
"pickle3",
"noncopyable_export",
"noncopyable_import",
"ivect",
"dvect",
)
if (__name__ == "__main__"):
import sys, os, shutil
path = sys.argv[1]
mode = sys.argv[2]
if (not mode in ("softlinks", "unlink", "cp", "rm", "copy", "del")):
raise RuntimeError, \
"usage: python filemgr.py path <softlinks|unlink|cp|rm|copy|del>"
if (mode in ("cp", "copy")):
for fn in files:
f = os.path.basename(fn)
print "Copying: " + f
shutil.copy(path + fn, ".")
elif (mode == "softlinks"):
for fn in files:
f = os.path.basename(fn)
if (os.path.exists(f)):
print "File exists: " + f
else:
print "Linking: " + f
os.symlink(path + fn, f)
elif (mode in ("rm", "del")):
for fn in files:
f = os.path.basename(fn)
if (os.path.exists(f)):
print "Removing: " + f
try: os.unlink(f)
except: pass
elif (mode == "unlink"):
for fn in files:
f = os.path.basename(fn)
if (os.path.exists(f)):
if (os.path.islink(f)):
print "Unlinking: " + f
try: os.unlink(f)
except: pass
else:
print "Not a softlink: " + f
if (mode in ("softlinks", "cp", "copy")):
for d in defs:
fn = d + ".def"
print "Creating: " + fn
f = open(fn, "w")
f.write("EXPORTS\n")
f.write("\tinit" + d + "\n")
f.close()
if (mode in ("unlink", "rm", "del")):
for d in defs:
fn = d + ".def"
if (os.path.exists(fn)):
print "Removing: " + fn
try: os.unlink(fn)
except: pass

87
build/gcc.mak Normal file
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# Revision History
# 17 Apr 01 include cross-module support, compile getting_started1 (R.W. Grosse-Kunstleve)
# 17 Apr 01 build shared library (patch provided by Dan Nuffer)
# 04 Mar 01 Changed library name to libboost_python.a, various cleanups,
# attempted Cygwin compatibility. Still needs testing on Linux
# (David Abrahams)
LIBSRC = \
classes.cpp \
conversions.cpp \
cross_module.cpp \
extension_class.cpp \
functions.cpp \
init_function.cpp \
module_builder.cpp \
objects.cpp \
types.cpp
LIBOBJ = $(LIBSRC:.cpp=.o)
OBJ = $(LIBOBJ)
LIBNAME = libboost_python
# libpython2.0.dll
ifeq "$(OS)" "Windows_NT"
ROOT=c:/cygnus
INC = -Ic:/cygnus/usr/include/g++-3 -Ic:/cygnus/usr/include -Ic:/boost -I$(PYTHON_INC)
MODULE_EXTENSION=dll
PYTHON_LIB=c:/cygnus/usr/local/lib/python2.0/config/libpython2.0.dll.a
SHARED_LIB = $(LIBNAME).dll
else
PYTHON_INC=$(ROOT)/usr/local/Python-2.0/include/python2.0
BOOST_INC=../../..
INC = -I$(BOOST_INC) -I$(PYTHON_INC)
MODULE_EXTENSION=so
VERSION=1
SHARED_LIB = $(LIBNAME).so.$(VERSION)
endif
%.o: ../src/%.cpp
g++ -fPIC -Wall -W $(INC) $(CXXFLAGS) -o $*.o -c $<
%.d: ../src/%.cpp
@echo creating $@
@set -e; g++ -M $(INC) -c $< \
| sed 's/\($*\)\.o[ :]*/\1.o $@ : /g' > $@; \
[ -s $@ ] || rm -f $@
PYTHON = python
all: test $(SHARED_LIB) getting_started1
test: comprehensive.o $(LIBNAME).a $(SHARED_LIB)
g++ $(CXXFLAGS) -shared -o ../test/boost_python_test.$(MODULE_EXTENSION) comprehensive.o -L. -lboost_python $(PYTHON_LIB)
$(PYTHON) ../test/comprehensive.py
comprehensive.o: ../test/comprehensive.cpp
g++ $(CXXFLAGS) --template-depth-32 -fPIC -Wall -W $(INC) -o $*.o -c $<
getting_started1: getting_started1.o $(LIBNAME).a
g++ $(CXXFLAGS) -shared -o ../example/getting_started1.$(MODULE_EXTENSION) getting_started1.o -L. -lboost_python $(PYTHON_LIB)
ln -s ../test/doctest.py ../example
$(PYTHON) ../example/test_getting_started1.py
getting_started1.o: ../example/getting_started1.cpp
g++ $(CXXFLAGS) --template-depth-32 -fPIC -Wall -W $(INC) -o $*.o -c $<
clean:
rm -rf *.o *.$(MODULE_EXTENSION) *.a *.d *.pyc *.bak a.out
$(LIBNAME).a: $(LIBOBJ)
rm -f $@
ar cqs $@ $(LIBOBJ)
$(SHARED_LIB): $(LIBOBJ)
g++ $(CXXFLAGS) -shared -o $@ -Wl,--soname=$(LIBNAME).$(MODULE_EXTENSION)
DEP = $(OBJ:.o=.d)
ifneq "$(MAKECMDGOALS)" "clean"
include $(DEP)
endif

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@@ -0,0 +1,136 @@
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160
build/irix_CC.mak Normal file
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# Usage:
#
# Create a new empty directory anywhere (preferably not in the boost tree).
# Copy this Makefile to that new directory and rename it to "Makefile"
# Adjust the pathnames below.
#
# make softlinks Create softlinks to source code and tests
# make Compile all sources
# make test Run doctest tests
# make clean Remove all object files
# make unlink Remove softlinks
#
# Revision history:
# 12 Apr 01 new macro ROOT to simplify configuration (R.W. Grosse-Kunstleve)
# Initial version: R.W. Grosse-Kunstleve
ROOT=$(HOME)
BOOST=$(ROOT)/boost
PYEXE=/usr/local/Python-1.5.2/bin/python
PYINC=-I/usr/local/Python-1.5.2/include/python1.5
#PYEXE=/usr/local/Python-2.0/bin/python
#PYINC=-I/usr/local/Python-2.0/include/python2.0
STLPORTINC=-I$(BOOST)/boost/compatibility/cpp_c_headers
STDOPTS=
WARNOPTS=-woff 1001,1234,1682
OPTOPTS=-g
CPP=CC -LANG:std -n32 -mips4
CPPOPTS=$(STLPORTINC) $(STLPORTOPTS) -I$(BOOST) $(PYINC) \
$(STDOPTS) $(WARNOPTS) $(OPTOPTS)
MAKEDEP=-M
LD=CC -LANG:std -n32 -mips4
LDOPTS=-shared
OBJ=classes.o conversions.o extension_class.o functions.o \
init_function.o module_builder.o \
objects.o types.o cross_module.o
DEPOBJ=$(OBJ) \
comprehensive.o \
abstract.o \
getting_started1.o getting_started2.o \
simple_vector.o \
do_it_yourself_converters.o \
pickle1.o pickle2.o pickle3.o \
noncopyable_export.o noncopyable_import.o \
ivect.o dvect.o
.SUFFIXES: .o .cpp
all: libboost_python.a \
boost_python_test.so \
abstract.so \
getting_started1.so getting_started2.so \
simple_vector.so \
do_it_yourself_converters.so \
pickle1.so pickle2.so pickle3.so \
noncopyable_export.so noncopyable_import.so \
ivect.so dvect.so
libboost_python.a: $(OBJ)
rm -f libboost_python.a
$(CPP) -ar -o libboost_python.a $(OBJ)
boost_python_test.so: $(OBJ) comprehensive.o
$(LD) $(LDOPTS) $(OBJ) comprehensive.o -o boost_python_test.so -lm
abstract.so: $(OBJ) abstract.o
$(LD) $(LDOPTS) $(OBJ) abstract.o -o abstract.so
getting_started1.so: $(OBJ) getting_started1.o
$(LD) $(LDOPTS) $(OBJ) getting_started1.o -o getting_started1.so
getting_started2.so: $(OBJ) getting_started2.o
$(LD) $(LDOPTS) $(OBJ) getting_started2.o -o getting_started2.so
simple_vector.so: $(OBJ) simple_vector.o
$(LD) $(LDOPTS) $(OBJ) simple_vector.o -o simple_vector.so
do_it_yourself_converters.so: $(OBJ) do_it_yourself_converters.o
$(LD) $(LDOPTS) $(OBJ) do_it_yourself_converters.o -o do_it_yourself_converters.so
pickle1.so: $(OBJ) pickle1.o
$(LD) $(LDOPTS) $(OBJ) pickle1.o -o pickle1.so
pickle2.so: $(OBJ) pickle2.o
$(LD) $(LDOPTS) $(OBJ) pickle2.o -o pickle2.so
pickle3.so: $(OBJ) pickle3.o
$(LD) $(LDOPTS) $(OBJ) pickle3.o -o pickle3.so
noncopyable_export.so: $(OBJ) noncopyable_export.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) \
noncopyable_export.o -o noncopyable_export.so
noncopyable_import.so: $(OBJ) noncopyable_import.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) \
noncopyable_import.o -o noncopyable_import.so
ivect.so: $(OBJ) ivect.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) ivect.o -o ivect.so
dvect.so: $(OBJ) dvect.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) dvect.o -o dvect.so
.cpp.o:
$(CPP) $(CPPOPTS) -c $*.cpp
test:
$(PYEXE) comprehensive.py
$(PYEXE) test_abstract.py
$(PYEXE) test_getting_started1.py
$(PYEXE) test_getting_started2.py
$(PYEXE) test_simple_vector.py
$(PYEXE) test_do_it_yourself_converters.py
$(PYEXE) test_pickle1.py
$(PYEXE) test_pickle2.py
$(PYEXE) test_pickle3.py
$(PYEXE) test_cross_module.py
clean:
rm -f $(OBJ) libboost_python.a libboost_python.a.input
rm -f comprehensive.o boost_python_test.so
rm -f abstract.o abstract.so
rm -f getting_started1.o getting_started1.so
rm -f getting_started2.o getting_started2.so
rm -f simple_vector.o simple_vector.so
rm -f do_it_yourself_converters.o do_it_yourself_converters.so
rm -f pickle1.o pickle1.so
rm -f pickle2.o pickle2.so
rm -f pickle3.o pickle3.so
rm -f noncopyable_export.o noncopyable_export.so
rm -f noncopyable_import.o noncopyable_import.so
rm -f ivect.o ivect.so
rm -f dvect.o dvect.so
rm -f so_locations *.pyc
rm -rf ii_files
softlinks:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) softlinks
unlink:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) unlink
cp:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) cp
rm:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) rm
depend:
@ cat Makefile.nodepend; \
for obj in $(DEPOBJ); \
do \
bn=`echo "$$obj" | cut -d. -f1`; \
$(CPP) $(CPPOPTS) $(MAKEDEP) "$$bn".cpp; \
done

160
build/linux_gcc.mak Normal file
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@@ -0,0 +1,160 @@
# Usage:
#
# Create a new empty directory anywhere (preferably not in the boost tree).
# Copy this Makefile to that new directory and rename it to "Makefile"
# Adjust the pathnames below.
#
# make softlinks Create softlinks to source code and tests
# make Compile all sources
# make test Run doctest tests
# make clean Remove all object files
# make unlink Remove softlinks
#
# Revision history:
# 12 Apr 01 new macro ROOT to simplify configuration (R.W. Grosse-Kunstleve)
# Initial version: R.W. Grosse-Kunstleve
ROOT=$(HOME)
BOOST=$(ROOT)/boost
PYEXE=/usr/bin/python
PYINC=-I/usr/include/python1.5
#PYEXE=/usr/local/Python-1.5.2/bin/python
#PYINC=-I/usr/local/Python-1.5.2/include/python1.5
#PYEXE=/usr/local/Python-2.0/bin/python
#PYINC=-I/usr/local/Python-2.0/include/python2.0
STDOPTS=-ftemplate-depth-21
WARNOPTS=
OPTOPTS=-g
CPP=g++
CPPOPTS=$(STLPORTINC) $(STLPORTOPTS) -I$(BOOST) $(PYINC) \
$(STDOPTS) $(WARNOPTS) $(OPTOPTS)
MAKEDEP=-M
LD=g++
LDOPTS=-shared
OBJ=classes.o conversions.o extension_class.o functions.o \
init_function.o module_builder.o \
objects.o types.o cross_module.o
DEPOBJ=$(OBJ) \
comprehensive.o \
abstract.o \
getting_started1.o getting_started2.o \
simple_vector.o \
do_it_yourself_converters.o \
pickle1.o pickle2.o pickle3.o \
noncopyable_export.o noncopyable_import.o \
ivect.o dvect.o
.SUFFIXES: .o .cpp
all: libboost_python.a \
boost_python_test.so \
abstract.so \
getting_started1.so getting_started2.so \
simple_vector.so \
do_it_yourself_converters.so \
pickle1.so pickle2.so pickle3.so \
noncopyable_export.so noncopyable_import.so \
ivect.so dvect.so
libboost_python.a: $(OBJ)
rm -f libboost_python.a
ar r libboost_python.a $(OBJ)
boost_python_test.so: $(OBJ) comprehensive.o
$(LD) $(LDOPTS) $(OBJ) comprehensive.o -o boost_python_test.so -lm
abstract.so: $(OBJ) abstract.o
$(LD) $(LDOPTS) $(OBJ) abstract.o -o abstract.so
getting_started1.so: $(OBJ) getting_started1.o
$(LD) $(LDOPTS) $(OBJ) getting_started1.o -o getting_started1.so
getting_started2.so: $(OBJ) getting_started2.o
$(LD) $(LDOPTS) $(OBJ) getting_started2.o -o getting_started2.so
simple_vector.so: $(OBJ) simple_vector.o
$(LD) $(LDOPTS) $(OBJ) simple_vector.o -o simple_vector.so
do_it_yourself_converters.so: $(OBJ) do_it_yourself_converters.o
$(LD) $(LDOPTS) $(OBJ) do_it_yourself_converters.o -o do_it_yourself_converters.so
pickle1.so: $(OBJ) pickle1.o
$(LD) $(LDOPTS) $(OBJ) pickle1.o -o pickle1.so
pickle2.so: $(OBJ) pickle2.o
$(LD) $(LDOPTS) $(OBJ) pickle2.o -o pickle2.so
pickle3.so: $(OBJ) pickle3.o
$(LD) $(LDOPTS) $(OBJ) pickle3.o -o pickle3.so
noncopyable_export.so: $(OBJ) noncopyable_export.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) \
noncopyable_export.o -o noncopyable_export.so
noncopyable_import.so: $(OBJ) noncopyable_import.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) \
noncopyable_import.o -o noncopyable_import.so
ivect.so: $(OBJ) ivect.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) ivect.o -o ivect.so
dvect.so: $(OBJ) dvect.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) dvect.o -o dvect.so
.cpp.o:
$(CPP) $(CPPOPTS) -c $*.cpp
test:
$(PYEXE) comprehensive.py
$(PYEXE) test_abstract.py
$(PYEXE) test_getting_started1.py
$(PYEXE) test_getting_started2.py
$(PYEXE) test_simple_vector.py
$(PYEXE) test_do_it_yourself_converters.py
$(PYEXE) test_pickle1.py
$(PYEXE) test_pickle2.py
$(PYEXE) test_pickle3.py
$(PYEXE) test_cross_module.py
clean:
rm -f $(OBJ) libboost_python.a libboost_python.a.input
rm -f comprehensive.o boost_python_test.so
rm -f abstract.o abstract.so
rm -f getting_started1.o getting_started1.so
rm -f getting_started2.o getting_started2.so
rm -f simple_vector.o simple_vector.so
rm -f do_it_yourself_converters.o do_it_yourself_converters.so
rm -f pickle1.o pickle1.so
rm -f pickle2.o pickle2.so
rm -f pickle3.o pickle3.so
rm -f noncopyable_export.o noncopyable_export.so
rm -f noncopyable_import.o noncopyable_import.so
rm -f ivect.o ivect.so
rm -f dvect.o dvect.so
rm -f so_locations *.pyc
softlinks:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) softlinks
unlink:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) unlink
cp:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) cp
rm:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) rm
depend:
@ cat Makefile.nodepend; \
for obj in $(DEPOBJ); \
do \
bn=`echo "$$obj" | cut -d. -f1`; \
$(CPP) $(CPPOPTS) $(MAKEDEP) "$$bn".cpp; \
done

189
build/mingw32.mak Normal file
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# Usage:
#
# make copy Copy the sources and tests
# make Compile all sources
# make test Run doctest tests
# make clean Remove all object files
# make del Remove the sources and tests
#
# Revision history:
# 12 Apr 01 new macro ROOT to simplify configuration (R.W. Grosse-Kunstleve)
# Initial version: R.W. Grosse-Kunstleve
# To install mingw32, follow instructions at:
# http://starship.python.net/crew/kernr/mingw32/Notes.html
# In particular, install:
# ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/mingw32/gcc-2.95.2/gcc-2.95.2-msvcrt.exe
# ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/mingw32/gcc-2.95.2/fixes/quote-fix-msvcrt.exe
# http://starship.python.net/crew/kernr/mingw32/Python-1.5.2-mingw32.zip
# Unpack the first two archives in the default locations and update your PATH.
# Unpack the third archive in \usr.
# Note: comprehensive.cpp generates compiler errors and later crashes.
# L:\boost\boost\python\detail\extension_class.hpp:643: warning:
# alignment of `vtable for class
# boost::python::detail::held_instance<bpl_test::Derived1>'
# is greater than maximum object file alignment. Using 16.
# Could this be fixed with compiler options?
# -fhuge-objects looks interesting, but requires recompiling the C++ library.
# (what exactly does that mean?)
# -fvtable-thunks eliminates the compiler warning, but
# "import boost_python_test" still causes a crash.
ROOT=L:
BOOST_WIN="$(ROOT)\boost"
BOOST_UNIX=$(HOME)/boost
PYEXE="C:\Program files\Python\python.exe"
PYINC=-I"C:\usr\include\python1.5"
PYLIB="C:\usr\lib\libpython15.a"
STDOPTS=-ftemplate-depth-21
WARNOPTS=
OPTOPTS=-g
CPP=g++
CPPOPTS=$(STLPORTINC) $(STLPORTOPTS) -I$(BOOST_WIN) $(PYINC) \
$(STDOPTS) $(WARNOPTS) $(OPTOPTS)
LD=g++
LDOPTS=-shared
OBJ=classes.o conversions.o extension_class.o functions.o \
init_function.o module_builder.o \
objects.o types.o cross_module.o
.SUFFIXES: .o .cpp
all: libboost_python.a \
abstract.pyd \
getting_started1.pyd getting_started2.pyd \
simple_vector.pyd \
do_it_yourself_converters.pyd \
pickle1.pyd pickle2.pyd pickle3.pyd \
noncopyable_export.pyd noncopyable_import.pyd \
ivect.pyd dvect.pyd
libboost_python.a: $(OBJ)
del libboost_python.a
ar r libboost_python.a $(OBJ)
DLLWRAPOPTS=-s --driver-name g++ -s \
--entry _DllMainCRTStartup@12 --target=i386-mingw32
boost_python_test.pyd: $(OBJ) comprehensive.o
dllwrap $(DLLWRAPOPTS) \
--dllname boost_python_test.pyd \
--def boost_python_test.def \
$(OBJ) comprehensive.o $(PYLIB)
abstract.pyd: $(OBJ) abstract.o
dllwrap $(DLLWRAPOPTS) \
--dllname abstract.pyd \
--def abstract.def \
$(OBJ) abstract.o $(PYLIB)
getting_started1.pyd: $(OBJ) getting_started1.o
dllwrap $(DLLWRAPOPTS) \
--dllname getting_started1.pyd \
--def getting_started1.def \
$(OBJ) getting_started1.o $(PYLIB)
getting_started2.pyd: $(OBJ) getting_started2.o
dllwrap $(DLLWRAPOPTS) \
--dllname getting_started2.pyd \
--def getting_started2.def \
$(OBJ) getting_started2.o $(PYLIB)
simple_vector.pyd: $(OBJ) simple_vector.o
dllwrap $(DLLWRAPOPTS) \
--dllname simple_vector.pyd \
--def simple_vector.def \
$(OBJ) simple_vector.o $(PYLIB)
do_it_yourself_converters.pyd: $(OBJ) do_it_yourself_converters.o
dllwrap $(DLLWRAPOPTS) \
--dllname do_it_yourself_converters.pyd \
--def do_it_yourself_converters.def \
$(OBJ) do_it_yourself_converters.o $(PYLIB)
pickle1.pyd: $(OBJ) pickle1.o
dllwrap $(DLLWRAPOPTS) \
--dllname pickle1.pyd \
--def pickle1.def \
$(OBJ) pickle1.o $(PYLIB)
pickle2.pyd: $(OBJ) pickle2.o
dllwrap $(DLLWRAPOPTS) \
--dllname pickle2.pyd \
--def pickle2.def \
$(OBJ) pickle2.o $(PYLIB)
pickle3.pyd: $(OBJ) pickle3.o
dllwrap $(DLLWRAPOPTS) \
--dllname pickle3.pyd \
--def pickle3.def \
$(OBJ) pickle3.o $(PYLIB)
noncopyable_export.pyd: $(OBJ) noncopyable_export.o
dllwrap $(DLLWRAPOPTS) \
--dllname noncopyable_export.pyd \
--def noncopyable_export.def \
$(OBJ) noncopyable_export.o $(PYLIB)
noncopyable_import.pyd: $(OBJ) noncopyable_import.o
dllwrap $(DLLWRAPOPTS) \
--dllname noncopyable_import.pyd \
--def noncopyable_import.def \
$(OBJ) noncopyable_import.o $(PYLIB)
ivect.pyd: $(OBJ) ivect.o
dllwrap $(DLLWRAPOPTS) \
--dllname ivect.pyd \
--def ivect.def \
$(OBJ) ivect.o $(PYLIB)
dvect.pyd: $(OBJ) dvect.o
dllwrap $(DLLWRAPOPTS) \
--dllname dvect.pyd \
--def dvect.def \
$(OBJ) dvect.o $(PYLIB)
.cpp.o:
$(CPP) $(CPPOPTS) -c $*.cpp
test:
# $(PYEXE) comprehensive.py
$(PYEXE) test_abstract.py
$(PYEXE) test_getting_started1.py
$(PYEXE) test_getting_started2.py
$(PYEXE) test_simple_vector.py
$(PYEXE) test_do_it_yourself_converters.py
$(PYEXE) test_pickle1.py
$(PYEXE) test_pickle2.py
$(PYEXE) test_pickle3.py
$(PYEXE) test_cross_module.py
clean:
del *.o
del *.a
del *.pyd
del *.pyc
softlinks:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) softlinks
unlink:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) unlink
cp:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) cp
rm:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) rm
copy:
$(PYEXE) $(BOOST_WIN)\libs\python\build\filemgr.py $(BOOST_WIN) copy
del:
$(PYEXE) $(BOOST_WIN)\libs\python\build\filemgr.py $(BOOST_WIN) del

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# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /incremental:no /debug /machine:I386 /out:"DebugPython/boost_python_test_d.dll" /pdbtype:sept /libpath:"c:\tools\python\src\PCbuild"
# SUBTRACT LINK32 /pdb:none
!ENDIF
# Begin Target
# Name "test - Win32 Release"
# Name "test - Win32 Debug"
# Name "test - Win32 DebugPython"
# Begin Group "Source Files"
# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
# Begin Source File
SOURCE=..\..\test\comprehensive.cpp
# End Source File
# End Group
# Begin Group "Header Files"
# PROP Default_Filter "h;hpp;hxx;hm;inl"
# Begin Source File
SOURCE=..\..\test\comprehensive.hpp
# End Source File
# End Group
# Begin Group "Resource Files"
# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
# End Group
# End Target
# End Project

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# Usage:
#
# Create a new empty directory anywhere (preferably not in the boost tree).
# Copy this Makefile to that new directory and rename it to "Makefile"
# Adjust the pathnames below.
#
# make softlinks Create softlinks to source code and tests
# make Compile all sources
# make test Run doctest tests
# make clean Remove all object files
# make unlink Remove softlinks
#
# Revision history:
# 12 Apr 01 new macro ROOT to simplify configuration (R.W. Grosse-Kunstleve)
# Initial version: R.W. Grosse-Kunstleve
ROOT=$(HOME)
BOOST=$(ROOT)/boost
PYEXE=/usr/local/Python-1.5.2/bin/python
PYINC=-I/usr/local/Python-1.5.2/include/python1.5
#PYEXE=/usr/local/Python-2.0/bin/python
#PYINC=-I/usr/local/Python-2.0/include/python2.0
#STLPORTINC=-I/usr/local/STLport-4.1b3/stlport
#STLPORTINC=-I/usr/local/STLport-4.1b4/stlport
#STLPORTOPTS= \
# -D__USE_STD_IOSTREAM \
# -D__STL_NO_SGI_IOSTREAMS \
# -D__STL_USE_NATIVE_STRING \
# -D__STL_NO_NEW_C_HEADERS \
# -D_RWSTD_COMPILE_INSTANTIATE=1
STLPORTINC=-I$(BOOST)/boost/compatibility/cpp_c_headers
STDOPTS=-std strict_ansi
# use -msg_display_number to obtain integer tags for -msg_disable
WARNOPTS=-msg_disable 186,450,1115
OPTOPTS=-g
CPP=cxx
CPPOPTS=$(STLPORTINC) $(STLPORTOPTS) -I$(BOOST) $(PYINC) \
$(STDOPTS) $(WARNOPTS) $(OPTOPTS)
MAKEDEP=-Em
LD=cxx
LDOPTS=-shared -expect_unresolved 'Py*' -expect_unresolved '_Py*'
#HIDDEN=-hidden
OBJ=classes.o conversions.o extension_class.o functions.o \
init_function.o module_builder.o \
objects.o types.o cross_module.o
DEPOBJ=$(OBJ) \
comprehensive.o \
abstract.o \
getting_started1.o getting_started2.o \
simple_vector.o \
do_it_yourself_converters.o \
pickle1.o pickle2.o pickle3.o \
noncopyable_export.o noncopyable_import.o \
ivect.o dvect.o
.SUFFIXES: .o .cpp
all: libboost_python.a \
boost_python_test.so \
abstract.so \
getting_started1.so getting_started2.so \
simple_vector.so \
do_it_yourself_converters.so \
pickle1.so pickle2.so pickle3.so \
noncopyable_export.so noncopyable_import.so \
ivect.so dvect.so
libboost_python.a: $(OBJ)
rm -f libboost_python.a
cd cxx_repository; \
ls -1 > ../libboost_python.a.input; \
ar r ../libboost_python.a -input ../libboost_python.a.input
rm -f libboost_python.a.input
ar r libboost_python.a $(OBJ)
boost_python_test.so: $(OBJ) comprehensive.o
$(LD) $(LDOPTS) $(OBJ) comprehensive.o -o boost_python_test.so -lm
abstract.so: $(OBJ) abstract.o
$(LD) $(LDOPTS) $(OBJ) abstract.o -o abstract.so
getting_started1.so: $(OBJ) getting_started1.o
$(LD) $(LDOPTS) $(OBJ) getting_started1.o -o getting_started1.so
getting_started2.so: $(OBJ) getting_started2.o
$(LD) $(LDOPTS) $(OBJ) getting_started2.o -o getting_started2.so
simple_vector.so: $(OBJ) simple_vector.o
$(LD) $(LDOPTS) $(OBJ) simple_vector.o -o simple_vector.so
do_it_yourself_converters.so: $(OBJ) do_it_yourself_converters.o
$(LD) $(LDOPTS) $(OBJ) do_it_yourself_converters.o -o do_it_yourself_converters.so
pickle1.so: $(OBJ) pickle1.o
$(LD) $(LDOPTS) $(OBJ) pickle1.o -o pickle1.so
pickle2.so: $(OBJ) pickle2.o
$(LD) $(LDOPTS) $(OBJ) pickle2.o -o pickle2.so
pickle3.so: $(OBJ) pickle3.o
$(LD) $(LDOPTS) $(OBJ) pickle3.o -o pickle3.so
noncopyable_export.so: $(OBJ) noncopyable_export.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) \
noncopyable_export.o -o noncopyable_export.so
noncopyable_import.so: $(OBJ) noncopyable_import.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) \
noncopyable_import.o -o noncopyable_import.so
ivect.so: $(OBJ) ivect.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) ivect.o -o ivect.so
dvect.so: $(OBJ) dvect.o
$(LD) $(LDOPTS) $(OBJ) $(HIDDEN) dvect.o -o dvect.so
.cpp.o:
$(CPP) $(CPPOPTS) -c $*.cpp
test:
$(PYEXE) comprehensive.py
$(PYEXE) test_abstract.py
$(PYEXE) test_getting_started1.py
$(PYEXE) test_getting_started2.py
$(PYEXE) test_simple_vector.py
$(PYEXE) test_do_it_yourself_converters.py
$(PYEXE) test_pickle1.py
$(PYEXE) test_pickle2.py
$(PYEXE) test_pickle3.py
$(PYEXE) test_cross_module.py
clean:
rm -f $(OBJ) libboost_python.a libboost_python.a.input
rm -f comprehensive.o boost_python_test.so
rm -f abstract.o abstract.so
rm -f getting_started1.o getting_started1.so
rm -f getting_started2.o getting_started2.so
rm -f simple_vector.o simple_vector.so
rm -f do_it_yourself_converters.o do_it_yourself_converters.so
rm -f pickle1.o pickle1.so
rm -f pickle2.o pickle2.so
rm -f pickle3.o pickle3.so
rm -f noncopyable_export.o noncopyable_export.so
rm -f noncopyable_import.o noncopyable_import.so
rm -f ivect.o ivect.so
rm -f dvect.o dvect.so
rm -f so_locations *.pyc
rm -rf cxx_repository
softlinks:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) softlinks
unlink:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) unlink
cp:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) cp
rm:
$(PYEXE) $(BOOST)/libs/python/build/filemgr.py $(BOOST) rm
depend:
@ cat Makefile.nodepend; \
for obj in $(DEPOBJ); \
do \
bn=`echo "$$obj" | cut -d. -f1`; \
$(CPP) $(CPPOPTS) $(MAKEDEP) "$$bn".cpp; \
done

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# Usage:
#
# make copy Copy the sources and tests
# make Compile all sources
# make test Run doctest tests
# make clean Remove all object files
# make del Remove the sources and tests
#
# Revision history:
# 12 Apr 01 new macro ROOT to simplify configuration (R.W. Grosse-Kunstleve)
# Initial version: R.W. Grosse-Kunstleve
ROOT=L:
BOOST_WIN="$(ROOT)\boost"
BOOST_UNIX=$(HOME)/boost
PYEXE="C:\Program files\Python\python.exe"
PYINC=/I"C:\Program files\Python\include"
PYLIB="C:\Program files\Python\libs\python15.lib"
STDOPTS=/nologo /MD /GR /GX /Zm200
WARNOPTS=
OPTOPTS=
CPP=cl.exe
CPPOPTS=$(STLPORTINC) $(STLPORTOPTS) /I$(BOOST_WIN) $(PYINC) \
$(STDOPTS) $(WARNOPTS) $(OPTOPTS)
LD=link.exe
LDOPTS=/nologo /dll /incremental:no
OBJ=classes.obj conversions.obj extension_class.obj functions.obj \
init_function.obj module_builder.obj \
objects.obj types.obj cross_module.obj
.SUFFIXES: .obj .cpp
all: boost_python.lib \
boost_python_test.pyd \
abstract.pyd \
getting_started1.pyd getting_started2.pyd \
simple_vector.pyd \
do_it_yourself_converters.pyd \
pickle1.pyd pickle2.pyd pickle3.pyd \
noncopyable_export.pyd noncopyable_import.pyd \
ivect.pyd dvect.pyd
boost_python.lib: $(OBJ)
$(LD) -lib /nologo /out:boost_python.lib $(OBJ)
boost_python_test.pyd: $(OBJ) comprehensive.obj
$(LD) $(LDOPTS) $(OBJ) comprehensive.obj $(PYLIB) /export:initboost_python_test /out:"boost_python_test.pyd"
abstract.pyd: $(OBJ) abstract.obj
$(LD) $(LDOPTS) $(OBJ) abstract.obj $(PYLIB) /export:initabstract /out:"abstract.pyd"
getting_started1.pyd: $(OBJ) getting_started1.obj
$(LD) $(LDOPTS) $(OBJ) getting_started1.obj $(PYLIB) /export:initgetting_started1 /out:"getting_started1.pyd"
getting_started2.pyd: $(OBJ) getting_started2.obj
$(LD) $(LDOPTS) $(OBJ) getting_started2.obj $(PYLIB) /export:initgetting_started2 /out:"getting_started2.pyd"
simple_vector.pyd: $(OBJ) simple_vector.obj
$(LD) $(LDOPTS) $(OBJ) simple_vector.obj $(PYLIB) /export:initsimple_vector /out:"simple_vector.pyd"
do_it_yourself_converters.pyd: $(OBJ) do_it_yourself_converters.obj
$(LD) $(LDOPTS) $(OBJ) do_it_yourself_converters.obj $(PYLIB) /export:initdo_it_yourself_converters /out:"do_it_yourself_converters.pyd"
pickle1.pyd: $(OBJ) pickle1.obj
$(LD) $(LDOPTS) $(OBJ) pickle1.obj $(PYLIB) /export:initpickle1 /out:"pickle1.pyd"
pickle2.pyd: $(OBJ) pickle2.obj
$(LD) $(LDOPTS) $(OBJ) pickle2.obj $(PYLIB) /export:initpickle2 /out:"pickle2.pyd"
pickle3.pyd: $(OBJ) pickle3.obj
$(LD) $(LDOPTS) $(OBJ) pickle3.obj $(PYLIB) /export:initpickle3 /out:"pickle3.pyd"
noncopyable_export.pyd: $(OBJ) noncopyable_export.obj
$(LD) $(LDOPTS) $(OBJ) noncopyable_export.obj $(PYLIB) /export:initnoncopyable_export /out:"noncopyable_export.pyd"
noncopyable_import.pyd: $(OBJ) noncopyable_import.obj
$(LD) $(LDOPTS) $(OBJ) noncopyable_import.obj $(PYLIB) /export:initnoncopyable_import /out:"noncopyable_import.pyd"
ivect.pyd: $(OBJ) ivect.obj
$(LD) $(LDOPTS) $(OBJ) ivect.obj $(PYLIB) /export:initivect /out:"ivect.pyd"
dvect.pyd: $(OBJ) dvect.obj
$(LD) $(LDOPTS) $(OBJ) dvect.obj $(PYLIB) /export:initdvect /out:"dvect.pyd"
.cpp.obj:
$(CPP) $(CPPOPTS) /c $*.cpp
test:
$(PYEXE) comprehensive.py --broken-auto-ptr
$(PYEXE) test_abstract.py
$(PYEXE) test_getting_started1.py
$(PYEXE) test_getting_started2.py
$(PYEXE) test_simple_vector.py
$(PYEXE) test_do_it_yourself_converters.py
$(PYEXE) test_pickle1.py
$(PYEXE) test_pickle2.py
$(PYEXE) test_pickle3.py
$(PYEXE) test_cross_module.py --broken-auto-ptr
clean:
del *.obj
del *.lib
del *.exp
del *.idb
del *.pyd
del *.pyc
softlinks:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) softlinks
unlink:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) unlink
cp:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) cp
rm:
python $(BOOST_UNIX)/libs/python/build/filemgr.py $(BOOST_UNIX) rm
copy:
$(PYEXE) $(BOOST_WIN)\libs\python\build\filemgr.py $(BOOST_WIN) copy
del:
$(PYEXE) $(BOOST_WIN)\libs\python\build\filemgr.py $(BOOST_WIN) del

View File

@@ -1,212 +0,0 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>
py_cpp Python/C++ binding documentation
</title>
<h1>
<img src="../../../c++boost.gif" alt="c++boost.gif (8819 bytes)" width="277"
align="center" height="86"> py_cpp<a href="#naming_contest">*</a>
</h1>
<p>
The source code for py_cpp, including a MSVC demo project is available <a
href="py_cpp_20001106.zip">here</a>.
<h2>Synopsis</h2>
<p>
py_cpp is a system for quickly and easily interfacing C++ code with <a
href="http:www.python.org">Python</a> such that the Python interface is
very similar to the C++ interface. It is designed to be minimally
intrusive on your C++ design. In most cases, you should not have to alter
your C++ classes in any way in order to use them with py_cpp. The system
<em>should</em> simply &ldquo;reflect&rdquo; your C++ classes and functions into
Python. The major features of py_cpp include support for:
<ul>
<li><a href="inheritance.hml">Subclassing extension types in Python</a>
<li><a href="overriding.html">Overriding virtual functions in Python</a>
<li><a href="overloading.html">[Member] function Overloading</a>
<li><a href="special.html#numeric_auto">Automatic wrapping of numeric operators</a>
</ul>
among others.
<h2>Supported Platforms</h2>
<p>py_cpp has been tested in the following configurations:
<ul>
<li>Against Python 1.5.2 using the following compiler/library:
<ul>
<li><a
href="http://msdn.microsoft.com/vstudio/sp/vs6sp4/dnldoverview.asp">MSVC++6sp4</a>
<li><a
href="http://msdn.microsoft.com/vstudio/sp/vs6sp4/dnldoverview.asp">MSVC++6sp4</a>/<a
href="http://www.stlport.org">STLport 4.0</a>
<li><a href="http://gcc.gnu.org/">GCC 2.95.2</a> [by <a href="mailto:koethe@informatik.uni-hamburg.de">Ullrich
Koethe</a>]
<li><a href="http://gcc.gnu.org/">GCC 2.95.2</a>/<a href="http://www.stlport.org">STLport 4.0</a>
<li>Compaq C++ V6.2-024 for Digital UNIX V5.0 Rev. 910 (an <a
href="http://www.edg.com/">EDG</a>-based compiler) with <a
href="http://www.stlport.org/beta.html">STLport-4.1b3</a> [by <a
href="mailto:rwgk@cci.lbl.gov">Ralf W. Grosse-Kunstleve</a>]
<li>An upcoming release of <a href="http://www.metrowerks.com/products/windows/">Metrowerks CodeWarrior
Pro6 for Windows</a> (the first release has a bug that's fatal to py_cpp)
</ul>
<br>
<li>Against Python 2.0 using the following compiler/library combinations:
<ul>
<li><a
href="http://msdn.microsoft.com/vstudio/sp/vs6sp4/dnldoverview.asp">MSVC++6sp4</a> [by
<a href="mailto:aleaxit@yahoo.com">Alex Martelli</a>]
</ul>
</ul>
<p>Py_cpp requires the <a href="http://www.boost.org">boost</a> libraries, and is
has been accepted for inclusion into the boost libraries pending &ldquo;boostification&ldquo;
(completion of the documentation, change in some naming conventions and
resolution of some namespace issues).
<h2>Credits</h2>
<ul>
<li><a href="mailto:abrahams@mediaone.net">David Abrahams</a> originated
and wrote py_cpp.
<li><a href="mailto:koethe@informatik.uni-hamburg.de">Ullrich Koethe</a>
had independently developed a similar system. When he discovered py_cpp,
he generously contributed countless hours of coding and much insight into
improving it. He is responsible for an early version of the support for <a
href="overloading.html">function overloading</a> and wrote the support for
<a href="inheritance.html#implicit_conversion">reflecting C++ inheritance
relationships</a>. He has helped to improve error-reporting from both
Python and C++, and has designed an extremely easy-to-use way of
exposing <a href="special.html#numeric">numeric operators</a>, including
a way to avoid explicit coercion by means of overloading.
<li>The members of the boost mailing list and the Python community supplied
invaluable early feedback. In particular, Ron Clarke, Mark Evans, Anton
Gluck, Ralf W. Grosse-Kunstleve, Prabhu Ramachandran, and Barry Scott took
the brave step of trying to use py_cpp while it was still in early stages
of development.
<li>The development of py_cpp wouldn't have been
possible without the generous support of <a href="http://www.dragonsys.com/">Dragon Systems/Lernout and
Hauspie, Inc</a> who supported its development as an open-source project.
</ul>
<h2>Table of Contents</h2>
<ol>
<li><a href="extending.html">A Brief Introduction to writing Python
extension modules</a>
<li><a href="comparisons.html">Comparisons between py_cpp and other
systems for extending Python</a>
<li><a href="example1.html">A Simple Example Using py_cpp</a>
<li><a href="overriding.html">Overridable Virtual Functions</a>
<li><a href="overloading.html">Function Overloading</a>
<li><a href="inheritance.html">Inheritance</a>
<li><a href="special.html">Special Method and Operator Support</a>
<li><a href="under-the-hood.html">A Peek Under the Hood</a>
<li><a href="building.html">Building a Module with Py_cpp</a>
<li>Advanced Topics
<ol>
<li>class_builder&lt;&gt;
<li><a href="enums.html">enums</a>
<li>References
<li><a href="pointers.html">Pointers and Smart Pointers</a>
<li>Built-in Python Types
<li>Other Extension Types
<li>Templates
</ol>
</ol>
<p>
More sophisticated examples are given in
<code>extclass_demo.cpp</code>, <code> extclass_demo.h</code>, and <code>
test_extclass.py</code> in the <a href="py_cpp.tgz">source code
archive</a>. There's much more here, and much more documentation to
come...
<p>
Questions should be directed to <a href=
"http://www.egroups.com/list/boost">the boost mailing list</a>.
<h2>Naming Contest</h2>
<p>
Yes, I know py_cpp is a lousy name. Problem is, the best names my puny
imagination can muster (IDLE and GRAIL) are taken, so I'm holding a
naming contest. First prize? You get to pick the name&lt;0.2wink&gt; and
you will be credited in the documentation. Names that have been suggested
so far include:
<ul>
<li>
Py++
<li>
Python++
<li>
Coil
<li>
SnakeSkin
<li>
CCCP - <b>C</b>onvert <b>C</b>++ <b>
C</b>lasses to <b>P</b>ython
<li>
C<sup>3</sup>PO - <b>C</b>onvert <b>C</b>++
<b>C</b>lasses to <b>P</b>ython <b>
O</b>bjects
<li>
PALIN - <b>P</b>ython <b>
A</b>ugmented-<b>L</b>anguage <b>
IN</b>tegration
<li>
CLEESE - <b>C</b>++ <b>L</b>anguage <b>E</b>xtension <b>E</b>nvironment
<b>S</b>upremely <b>E</b>asy
<li>
JONES - <b>J</b>ust <b>O</b>bscenely <b>N</b>eat <b>E</b>xtension
<b>S</b>ystem
<li>
C-thru
<li>
SeamlessC
<li>
BorderCrossing
<li>
Perseus (because he solved a hairy problem involving snakes by using
reflection and was invisible most of the time).
</ul>
Please <a href="http://www.egroups.com/list/boost">post</a> or send <a
href="http:mailto:abrahams@mediaone.net">me</a> your suggestions!<br>
<br>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided &ldquo;as is&rdquo; without
express or implied warranty, and with no claim as to its suitability for
any purpose.
<p>
Updated: Nov 26, 2000

View File

@@ -1,43 +1,180 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<title>
Building a Module with Py_cpp
</title>
<div>
<h1>
<img width="277" height="86" id="_x0000_i1025" align="center"
src="../../../c++boost.gif" alt= "c++boost.gif (8819 bytes)">Building a Module with Py_cpp
</h1>
<p>
Right now, the only supported configuration is one in which the py_cpp
source files are statically linked with the source for your extension
module. You may first build them into a library and link it with your
extension module source, but the effect is the same as compiling all
the source files together. Some users have successfully built the
py_cpp sources into a shared library, and support for a shared library
build is planned, but not yet implemented. The py_cpp source files are:
<blockquote>
<pre>
<a href="../../../libs/python/src/extension_class.cpp">extclass.cpp</a>
<a href="../../../libs/python/src/functions.cpp">functions.cpp</a>
<a href="../../../libs/python/src/init_function.cpp">init_function.cpp</a>
<a href="../../../libs/python/src/module_builder.cpp">module.cpp</a>
<a href="../../../libs/python/src/types.cpp">newtypes.cpp</a>
<a href="../../../libs/python/src/objects.cpp">objects.cpp</a>
<a href="../../../libs/python/src/conversions.cpp">py.cpp</a>
<a href="../../../libs/python/src/classes.cpp">subclass.cpp</a>
</pre>
</blockquote>
<p>
Previous: <a href="under-the-hood.html">A Peek Under the Hood</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided &ldquo;as
is&rdquo; without express or implied warranty, and with no claim as to
its suitability for any purpose.
<p>
Updated: Nov 26, 2000
</div>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<meta name="generator" content="HTML Tidy, see www.w3.org">
<title>Building an Extension Module</title>
<div>
<h1><img width="277" height="86" align="center" src=
"../../../c++boost.gif" alt="c++boost.gif (8819 bytes)">Building an
Extension Module</h1>
<p>The build process for Boost is currently undergoing some evolution,
and, it is to be hoped, improvement. The following facts may help:
<hr>
Makefiles for various platforms and a Visual Studio project
reside in the Boost subdirectory <tt>libs/python/build</tt>.
Build targets include:
<ul>
<li>The <tt>boost_python</tt> library for static linking with your
extension module. On the various Unices, this library will be
called <tt>libboost_python.a</tt>. When using Visual C++, the
library will be called <tt>boost_python.lib</tt>.
<p>
<li>A comprehensive test of Boost.Python features. This test builds
a Boost.Python extension module, then runs Python to import the
module, and runs a series of tests on it using <tt><a href=
"../test/doctest.py">doctest</a></tt>. Source code for the module
and tests is available in the Boost subdirectory
<tt>libs/python/test</tt>.
<p>
<li>Various examples from the Boost subdirectory
<tt>libs/python/example</tt>.
All these examples include a doctest modeled
on the comprehensive test above.
</ul>
<hr>
There is a group of makefiles with support for simultaneous
compilation on multiple platforms and a consistent set of
features that build the <tt>boost_python</tt> library for static
linking, the comprehensive test, and all examples in
<tt>libs/python/example</tt>:
<ul>
<li><a href="../build/vc60.mak">vc60.mak</a>:
Visual C++ 6.0 Service Pack 4
<li><a href="../build/mingw32.mak">mingw32.mak</a>:
mingw32 (Win32-targeted) gcc 2.95.2
<li><a href="../build/linux_gcc.mak">linux_gcc.mak</a>:
gcc 2.95.2 on Linux/Unix
<li><a href="../build/tru64_cxx.mak">tru64_cxx.mak</a>:
Compaq Alpha using the Compaq cxx compiler
<li><a href="../build/irix_CC.mak">irix_CC.mak</a>:
Silicon Graphics IRIX 6.5 CC compiler
</ul>
<a href="http://cctbx.sourceforge.net/page_installation_adv.html#installation_boost_python"
>Usage of these makefiles is described here.</a>
<hr>
There is another group of makefiles for GNU make.
These makefiles are less redundant than the makefiles
in the group above,
but the list of compilation targets is not as complete
and there is no support for simultaneous compilation
on multiple platforms.
<ul>
<li><a href="../build/como.mak">como.mak</a>:
Comeau C++ on Linux
<li><a href="../build/gcc.mak">gcc.mak</a>:
GCC on Linux/Unix.
</ul>
<hr>
A project workspace for Microsoft Visual Studio is provided at <tt><a
href="../build/build.dsw">libs/python/build/build.dsw</a></tt>. The
include paths for this project may need to be changed for your
installation. They currently assume that python has been installed at
<tt>c:\tools\python</tt>. Three configurations of all targets are
supported:
<ul>
<li>Release (optimization, <tt>-DNDEBUG</tt>)
<li>Debug (no optimization <tt>-D_DEBUG</tt>)
<li>DebugPython (no optimization, <tt>-D_DEBUG
-DBOOST_DEBUG_PYTHON</tt>)
</ul>
<p>When extension modules are built with Visual C++ using
<tt>-D_DEBUG</tt>, Python defaults to <i>force</i> linking with a
special debugging version of the Python DLL. Since this debug DLL
isn't supplied with the default Python installation for Windows,
Boost.Python uses <tt><a href=
"../../../boost/python/detail/wrap_python.hpp">boost/python/detail/wrap_python.hpp</a></tt>
to temporarily undefine <tt>_DEBUG</tt> when <tt>Python.h</tt> is
<tt>#include</tt>d.
<p>If you want the extra runtime checks available with the debugging
version of the library, <tt>#define BOOST_DEBUG_PYTHON</tt> to
re-enable library forcing, and link with the DebugPython version of
<tt>boost_python.lib</tt>. You'll need to get the debugging version
of the Python executable (<tt>python_d.exe</tt>) and DLL
(<tt>python20_d.dll</tt> or <tt>python15_d.dll</tt>). The Python
sources include project files for building these. If you <a href=
"http://www.python.org">download</a> them, change the name of the
top-level directory to <tt>src</tt>, and install it under
<tt>c:\tools\python</tt>, the workspace supplied by Boost.Python will
be able to use it without modification. Just open
<tt>c:\tools\python\src\pcbuild\pcbuild.dsw</tt> and invoke "build
all" to generate all the debugging targets.
<p>If you do not <tt>#define BOOST_DEBUG_PYTHON</tt>, be sure that
any source files <tt>#include &lt;<a href=
"../../../boost/python/detail/wrap_python.hpp">boost/python/detail/wrap_python.hpp</a>&gt;</tt>
instead of the usual <tt>Python.h</tt>, or you will have link
incompatibilities.<br>
<hr>
If your platform isn't directly supported, you can build a static
library from the following source files (in the Boost subdirectory
<tt>libs/python/src</tt>), or compile them directly and link the
resulting objects into your extension module:
<ul>
<li><a href=
"../../../libs/python/src/classes.cpp">classes.cpp</a>
<li><a href=
"../../../libs/python/src/conversions.cpp">conversions.cpp</a>
<li><a href=
"../../../libs/python/src/cross_module.cpp">cross_module.cpp</a>
<li><a href=
"../../../libs/python/src/extension_class.cpp">extension_class.cpp</a>
<li><a href=
"../../../libs/python/src/functions.cpp">functions.cpp</a>
<li><a href=
"../../../libs/python/src/init_function.cpp">init_function.cpp</a>
<li><a href=
"../../../libs/python/src/module_builder.cpp">module_builder.cpp</a>
<li><a href=
"../../../libs/python/src/objects.cpp">objects.cpp</a>
<li><a href=
"../../../libs/python/src/types.cpp">types.cpp</a>
</ul>
<hr>
Next: <a href="enums.html">Wrapping Enums</a> Previous: <a href=
"under-the-hood.html">A Peek Under the Hood</a> Up: <a href=
"index.html">Top</a>
<hr>
<p>&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided ``as is'' without
express or implied warranty, and with no claim as to its suitability for
any purpose.
<p>Updated: Apr 17, 2001 (R.W. Grosse-Kunstleve)
</div>

View File

@@ -6,20 +6,23 @@
<div>
<h1>
<img width="277" height="86" id="_x0000_i1025" align="center"
src="../../../c++boost.gif" alt= "c++boost.gif (8819 bytes)">Comparisons with
src="../../../c++boost.gif" alt= "c++boost.gif (8819 bytes)"><br>
Comparisons with
Other Systems
</h1>
<h2>CXX</h2>
<p>
Like py_cpp, <a href="http://cxx.sourceforge.net/">CXX</a> attempts to
provide a C++-oriented interface to Python. In most cases, like py_cpp,
it relieves the user from worrying about reference-counts. As far as I
can tell, there is no support for subclassing C++ extension types in
Python. An even more-significant difference is that a user's C++ code is
still basically &ldquo;dealing with Python objects&rdquo;, though they are wrapped
in C++ classes. This means such jobs as argument parsing and conversion
are still left to be done explicitly by the user.
Like Boost.Python, <a href="http://cxx.sourceforge.net/">CXX</a> attempts to
provide a C++-oriented interface to Python. In most cases, as with the
boost library, it relieves the user from worrying about
reference-counts. Both libraries automatically convert thrown C++
exceptions into Python exceptions. As far as I can tell, CXX has no
support for subclassing C++ extension types in Python. An even
more significant difference is that a user's C++ code is still basically
``dealing with Python objects'', though they are wrapped in
C++ classes. This means such jobs as argument parsing and conversion are
still left to be done explicitly by the user.
<p>
CXX claims to interoperate well with the C++ Standard Library
@@ -38,11 +41,15 @@
<p>
As far as I can tell, CXX enables one to write what is essentially
idiomatic Python code in C++, manipulating Python objects through the
same fully-generic interfaces we use in Python. I think it would be fair
to say that while you're not programming directly to the &ldquo;bare
metal&rdquo; with CXX, in comparison to py_cpp, it presents a low-level
interface to Python. That use is also supported by the py_cpp object
wrappers.
same fully-generic interfaces we use in Python. While you're hardly
programming directly to the ``bare metal'' with CXX, it basically
presents a ``C++-ized'' version of the Python 'C' API. Some fraction of
that capability is available in Boost.Python through <tt><a
href="../../../boost/python/objects.hpp">boost/python/objects.hpp</a></tt>,
which provides C++ objects corresponding to Python lists, tuples,
strings, and dictionaries, and through <tt><a
href="../../../boost/python/callback.hpp">boost/python/callback.hpp</a></tt>,
which allows you to call back into python with C++ arguments.
<p>
<a href="mailto:dubois1@llnl.gov">Paul F. Dubois</a>, the original
@@ -51,11 +58,11 @@
fill in the other half. Here is his response to the commentary above:
<blockquote>
&ldquo;My intention with CXX was not to do what you are doing. It was to enable a
``My intention with CXX was not to do what you are doing. It was to enable a
person to write an extension directly in C++ rather than C. I figured others had
the wrapping business covered. I thought maybe CXX would provide an easier
target language for those making wrappers, but I never explored
that.&rdquo;<br><i>-<a href="mailto:dubois1@llnl.gov">Paul Dubois</a></i>
that.''<br><i>-<a href="mailto:dubois1@llnl.gov">Paul Dubois</a></i>
</blockquote>
<h2>SWIG</h2>
@@ -65,28 +72,28 @@ that.&rdquo;<br><i>-<a href="mailto:dubois1@llnl.gov">Paul Dubois</a></i>
languages. Swig relies on a parser to read your source code and produce
additional source code files which can be compiled into a Python (or
Perl or Tcl) extension module. It has been successfully used to create
many Python extension modules. Like py_cpp, SWIG is trying to allow an
many Python extension modules. Like Boost.Python, SWIG is trying to allow an
existing interface to be wrapped with little or no change to the
existing code. The documentation says &ldquo;SWIG parses a form of ANSI C
existing code. The documentation says ``SWIG parses a form of ANSI C
syntax that has been extended with a number of special directives. As a
result, interfaces are usually built by grabbing a header file and
tweaking it a little bit.&rdquo; For C++ interfaces, the tweaking has often
tweaking it a little bit.'' For C++ interfaces, the tweaking has often
proven to amount to more than just a little bit. One user
writes:
<blockquote> &ldquo;The problem with swig (when I used it) is that it
<blockquote> ``The problem with swig (when I used it) is that it
couldnt handle templates, didnt do func overloading properly etc. For
ANSI C libraries this was fine. But for usual C++ code this was a
problem. Simple things work. But for anything very complicated (or
realistic), one had to write code by hand. I believe py_cpp doesn't have
realistic), one had to write code by hand. I believe Boost.Python doesn't have
this problem[<a href="#sic">sic</a>]... IMHO overloaded functions are very important to
wrap correctly.&rdquo;<br><i>-Prabhu Ramachandran</i>
wrap correctly.''<br><i>-Prabhu Ramachandran</i>
</blockquote>
<p>
By contrast, py_cpp doesn't attempt to parse C++ - the problem is simply
By contrast, Boost.Python doesn't attempt to parse C++ - the problem is simply
too complex to do correctly. <a name="sic">Technically</a>, one does
write code by hand to use py_cpp. The goal, however, has been to make
write code by hand to use Boost.Python. The goal, however, has been to make
that code nearly as simple as listing the names of the classes and
member functions you want to expose in Python.
@@ -95,7 +102,7 @@ that.&rdquo;<br><i>-<a href="mailto:dubois1@llnl.gov">Paul Dubois</a></i>
<a
href="http://www.thekompany.com/projects/pykde/background.php3?dhtml_ok=1">SIP</a>
is a system similar to SWIG, though seemingly more
C++-oriented. The author says that like py_cpp, SIP supports overriding
C++-oriented. The author says that like Boost.Python, SIP supports overriding
extension class member functions in Python subclasses. It appears to
have been designed specifically to directly support some features of
PyQt/PyKDE, which is its primary client. Documentation is almost
@@ -113,7 +120,7 @@ that.&rdquo;<br><i>-<a href="mailto:dubois1@llnl.gov">Paul Dubois</a></i>
to a wide range of computer languages, including Common Lisp, C++, C,
Modula-3, and Python. ILU can parse the ISL to generate a C++ language
header file describing the interface, of which the user is expected to
provide an implementation. Unlike py_cpp, this means that the system
provide an implementation. Unlike Boost.Python, this means that the system
imposes implementation details on your C++ code at the deepest level. It
is worth noting that some of the C++ names generated by ILU are supposed
to be reserved to the C++ implementation. It is unclear from the
@@ -124,7 +131,7 @@ that.&rdquo;<br><i>-<a href="mailto:dubois1@llnl.gov">Paul Dubois</a></i>
<a
href="http://www.python.org/workshops/1996-11/papers/GRAD/html/GRADcover.html">GRAD</a>
is another very ambitious project aimed at generating Python wrappers for
interfaces written in &ldquo;legacy languages&rdquo;, among which C++ is the first one
interfaces written in ``legacy languages'', among which C++ is the first one
implemented. Like SWIG, it aims to parse source code and automatically
generate wrappers, though it appears to take a more sophisticated approach
to parsing in general and C++ in particular, so it should do a much better
@@ -148,73 +155,77 @@ an inheritance relationship?
<h2>Zope ExtensionClasses</h2>
<p>
<a href="http:http://www.digicool.com/releases/ExtensionClass">
ExtensionClasses in Zope</a> use the same underlying mechanism as py_cpp
ExtensionClasses in Zope</a> use the same underlying mechanism as Boost.Python
to support subclassing of extension types in Python, including
multiple-inheritance. Both systems support pickling/unpickling of
extension class instances in very similar ways. Both systems rely on the
same &ldquo;<a
same ``<a
href="http://www.python.org/workshops/1994-11/BuiltInClasses/Welcome.html">Don
Beaudry Hack</a>&rdquo; that also inspired Don's MESS System.
Beaudry Hack</a>'' that also inspired Don's MESS System.
<p>
The major differences are:
<ul>
<li>Zope is entirely 'C' language-based. It doesn't require a C++
compiler, so it's much more portable than Boost.Python, which stresses
the limits of even some modern C++ implementations.
<li>
py_cpp lifts the burden on the user to parse and convert function
Boost.Python lifts the burden on the user to parse and convert function
argument types. Zope provides no such facility.
<li>
py_cpp lifts the burden on the user to maintain Python
Boost.Python lifts the burden on the user to maintain Python
reference-counts.
<li>
py_cpp supports function overloading; Zope does not.
Boost.Python supports function overloading; Zope does not.
<li>
py_cpp supplies a simple mechanism for exposing read-only and
Boost.Python supplies a simple mechanism for exposing read-only and
read/write access to data members of the wrapped C++ type as Python
attributes.
<li>
Writing a Zope ExtensionClass is significantly more complex than
exposing a C++ class to python using py_cpp (mostly a summary of the
exposing a C++ class to python using Boost.Python (mostly a summary of the
previous 4 items). <a href=
"http://www.digicool.com/releases/ExtensionClass/MultiMapping.html">A
Zope Example</a> illustrates the differences.
<li>
Zope's ExtensionClasses are specifically motivated by &ldquo;the need for a
C-based persistence mechanism&rdquo;. Py_cpp's are motivated by the desire
Zope's ExtensionClasses are specifically motivated by ``the need for a
C-based persistence mechanism''. Boost.Python's are motivated by the desire
to simply reflect a C++ API into Python with as little modification as
possible.
<li>
The following Zope restriction does not apply to py_cpp: &ldquo;At most one
The following Zope restriction does not apply to Boost.Python: ``At most one
base extension direct or indirect super class may define C data
members. If an extension subclass inherits from multiple base
extension classes, then all but one must be mix-in classes that
provide extension methods but no data.&rdquo;
provide extension methods but no data.''
<li>
Zope requires use of the somewhat funky inheritedAttribute (search for
&ldquo;inheritedAttribute&rdquo; on <a
``inheritedAttribute'' on <a
href="http://www.digicool.com/releases/ExtensionClass">this page</a>)
method to access base class methods. In py_cpp, base class methods can
method to access base class methods. In Boost.Python, base class methods can
be accessed in the usual way by writing
&ldquo;<code>BaseClass.method</code>&rdquo;.
``<code>BaseClass.method</code>''.
<li>
Zope supplies some creative but esoteric idioms such as <a href=
"http://www.digicool.com/releases/ExtensionClass/Acquisition.html">
Acquisition</a>. No specific support for this is built into py_cpp.
Acquisition</a>. No specific support for this is built into Boost.Python.
<li>
Zope's ComputedAttribute support is designed to be used from Python.
<a href="special.html#getter_setter">The analogous feature of
py_cpp</a> can be used from C++ or Python. The feature is arguably
easier to use in py_cpp.
Boost.Python</a> can be used from C++ or Python. The feature is arguably
easier to use in Boost.Python.
</ul>
<p>
Next: <a href="example1.html">A Simple Example Using Boost.Python</a>
Previous: <a href="extending.html">A Brief Introduction to writing Python Extension Modules</a>
Next: <a href="example1.html">A Simple Example Using py_cpp</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided &ldquo;as is&rdquo; without
notice appears in all copies. This document is provided ``as is'' without
express or implied warranty, and with no claim as to its suitability
for any purpose.
<p>
Updated: Nov 26, 2000
Updated: Mar 6, 2001
</div>

336
doc/cross_module.html Normal file
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@@ -0,0 +1,336 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<title>Cross-extension-module dependencies</title>
<div>
<img src="../../../c++boost.gif"
alt="c++boost.gif (8819 bytes)"
align="center"
width="277" height="86">
<hr>
<h1>Cross-extension-module dependencies</h1>
It is good programming practice to organize large projects as modules
that interact with each other via well defined interfaces. With
Boost.Python it is possible to reflect this organization at the C++
level at the Python level. This is, each logical C++ module can be
organized as a separate Python extension module.
<p>
At first sight this might seem natural and straightforward. However, it
is a fairly complex problem to establish cross-extension-module
dependencies while maintaining the same ease of use Boost.Python
provides for classes that are wrapped in the same extension module. To
a large extent this complexity can be hidden from the author of a
Boost.Python extension module, but not entirely.
<hr>
<h2>The recipe</h2>
Suppose there is an extension module that exposes certain instances of
the C++ <tt>std::vector</tt> template library such that it can be used
from Python in the following manner:
<pre>
import std_vector
v = std_vector.double([1, 2, 3, 4])
v.push_back(5)
v.size()
</pre>
Suppose the <tt>std_vector</tt> module is done well and reflects all
C++ functions that are useful at the Python level, for all C++ built-in
data types (<tt>std_vector.int</tt>, <tt>std_vector.long</tt>, etc.).
<p>
Suppose further that there is statistic module with a C++ class that
has constructors or member functions that use or return a
<tt>std::vector</tt>. For example:
<pre>
class xy {
public:
xy(const std::vector&lt;double&gt;&amp; x, const std::vector&lt;double&gt;&amp; y) : m_x(x), m_y(y) {}
const std::vector&lt;double&gt;&amp; x() const { return m_x; }
const std::vector&lt;double&gt;&amp; y() const { return m_y; }
double correlation();
private:
std::vector&lt;double&gt; m_x;
std::vector&lt;double&gt; m_y;
}
</pre>
What is more natural than reusing the <tt>std_vector</tt> extension
module to expose these constructors or functions to Python?
<p>
Unfortunately, what seems natural needs a little work in both the
<tt>std_vector</tt> and the <tt>statistics</tt> module.
<p>
In the <tt>std_vector</tt> extension module,
<tt>std::vector&lt;double&gt;</tt> is exposed to Python in the usual
way with the <tt>class_builder&lt;&gt;</tt> template. To also enable the
automatic conversion of <tt>std::vector&lt;double&gt;</tt> function
arguments or return values in other Boost.Python C++ modules, the
converters that convert a <tt>std::vector&lt;double&gt;</tt> C++ object
to a Python object and vice versa (i.e. the <tt>to_python()</tt> and
<tt>from_python()</tt> template functions) have to be exported. For
example:
<pre>
#include &lt;boost/python/cross_module.hpp&gt;
//...
class_builder&lt;std::vector&lt;double&gt; &gt; v_double(std_vector_module, &quot;double&quot;);
export_converters(v_double);
</pre>
In the extension module that wraps <tt>class xy</tt> we can now import
these converters with the <tt>import_converters&lt;&gt;</tt> template.
For example:
<pre>
#include &lt;boost/python/cross_module.hpp&gt;
//...
import_converters&lt;std::vector&lt;double&gt; &gt; v_double_converters(&quot;std_vector&quot;, &quot;double&quot;);
</pre>
That is all. All the attributes that are defined for
<tt>std_vector.double</tt> in the <tt>std_vector</tt> Boost.Python
module will be available for the returned objects of <tt>xy.x()</tt>
and <tt>xy.y()</tt>. Similarly, the constructor for <tt>xy</tt> will
accept objects that were created by the <tt>std_vector</tt>module.
<hr>
<h2>Placement of <tt>import_converters&lt;&gt;</tt> template instantiations</h2>
<tt>import_converts&lt;&gt;</tt> can be viewed as a drop-in replacement
for <tt>class_wrapper&lt;&gt;</tt>, and the recommendations for the
placement of <tt>class_wrapper&lt;&gt;</tt> template instantiations
also apply to to <tt>import_converts&lt;&gt;</tt>. In particular, it is
important that an instantiation of <tt>class_wrapper&lt;&gt;</tt> is
visible to any code which wraps a C++ function with a <tt>T</tt>,
<tt>T*</tt>, const <tt>T&amp;</tt>, etc. parameter or return value.
Therefore you may want to group all <tt>class_wrapper&lt;&gt;</tt> and
<tt>import_converts&lt;&gt;</tt> instantiations at the top of your
module's init function, then <tt>def()</tt> the member functions later
to avoid problems with inter-class dependencies.
<hr>
<h2>Non-copyable types</h2>
<tt>export_converters()</tt> instantiates C++ template functions that
invoke the copy constructor of the wrapped type. For a type that is
non-copyable this will result in compile-time error messages. In such a
case, <tt>export_converters_noncopyable()</tt> can be used to export
the converters that do not involve the copy constructor of the wrapped
type. For example:
<pre>
class_builder&lt;store&gt; py_store(your_module, &quot;store&quot;);
export_converters_noncopyable(py_store);
</pre>
The corresponding <tt>import_converters&lt;&gt;</tt> statement does not
need any special attention:
<pre>
import_converters&lt;store&gt; py_store(&quot;noncopyable_export&quot;, &quot;store&quot;);
</pre>
<hr>
<h2>Python module search path</h2>
The <tt>std_vector</tt> and <tt>statistics</tt> modules can now be used
in the following way:
<pre>
import std_vector
import statistics
x = std_vector.double([1, 2, 3, 4])
y = std_vector.double([2, 4, 6, 8])
xy = statistics.xy(x, y)
xy.correlation()
</pre>
In this example it is clear that Python has to be able to find both the
<tt>std_vector</tt> and the <tt>statistics</tt> extension module. In
other words, both extension modules need to be in the Python module
search path (<tt>sys.path</tt>).
<p>
The situation is not always this obvious. Suppose the
<tt>statistics</tt> module has a <tt>random()</tt> function that
returns a vector of random numbers with a given length:
<pre>
import statistics
x = statistics.random(5)
y = statistics.random(5)
xy = statistics.xy(x, y)
xy.correlation()
</pre>
A naive user will not easily anticipate that the <tt>std_vector</tt>
module is used to pass the <tt>x</tt> and <tt>y</tt> vectors around. If
the <tt>std_vector</tt> module is in the Python module search path,
this form of ignorance is of no harm. On the contrary, we are glad
that we do not have to bother the user with details like this.
<p>
If the <tt>std_vector</tt> module is not in the Python module search
path, a Python exception will be raised:
<pre>
Traceback (innermost last):
File &quot;foo.py&quot;, line 2, in ?
x = statistics.random(5)
ImportError: No module named std_vector
</pre>
As is the case with any system of a non-trivial complexity, it is
important that the setup is consistent and complete.
<hr>
<h2>Two-way module dependencies</h2>
Boost.Python supports two-way module dependencies. This is best
illustrated by a simple example.
<p>
Suppose there is a module <tt>ivect</tt> that implements vectors of
integers, and a similar module <tt>dvect</tt> that implements vectors
of doubles. We want to be able do convert an integer vector to a double
vector and vice versa. For example:
<pre>
import ivect
iv = ivect.ivect((1,2,3,4,5))
dv = iv.as_dvect()
</pre>
The last expression will implicitly import the <tt>dvect</tt> module in
order to enable the conversion of the C++ representation of
<tt>dvect</tt> to a Python object. The analogous is possible for a
<tt>dvect</tt>:
<pre>
import dvect
dv = dvect.dvect((1,2,3,4,5))
iv = dv.as_ivect()
</pre>
Now the <tt>ivect</tt> module is imported implicitly.
<p>
Note that the two-way dependencies are possible because the
dependencies are resolved only when needed. This is, the initialization
of the <tt>ivect</tt> module does not rely on the <tt>dvect</tt>
module, and vice versa. Only if <tt>as_dvect()</tt> or
<tt>as_ivect()</tt> is actually invoked will the corresponding module
be implicitly imported. This also means that, for example, the
<tt>dvect</tt> module does not have to be available at all if
<tt>as_dvect()</tt> is never used.
<hr>
<h2>Clarification of compile-time and link-time dependencies</h2>
Boost.Python's support for resolving cross-module dependencies at
runtime does not imply that compile-time dependencies are eliminated.
For example, the statistics extension module in the example above will
need to <tt>#include &lt;vector&gt;</tt>. This is immediately obvious
from the definition of <tt>class xy</tt>.
<p>
If a library is wrapped that consists of both header files and compiled
components (e.g. <tt>libdvect.a</tt>, <tt>dvect.lib</tt>, etc.), both
the Boost.Python extension module with the
<tt>export_converters()</tt> statement and the module with the
<tt>import_converters&lt;&gt;</tt> statement need to be linked against
the object library. Ideally one would build a shared library (e.g.
<tt>libdvect.so</tt>, <tt>dvect.dll</tt>, etc.). However, this
introduces the issue of having to configure the search path for the
dynamic loading correctly. For small libraries it is therefore often
more convenient to ignore the fact that the object files are loaded
into memory more than once.
<hr>
<h2>Summary of motivation for cross-module support</h2>
The main purpose of Boost.Python's cross-module support is to allow for
a modular system layout. With this support it is straightforward to
reflect C++ code organization at the Python level. Without the
cross-module support, a multi-purpose module like <tt>std_vector</tt>
would be impractical because the entire wrapper code would somehow have
to be duplicated in all extension modules that use it, making them
harder to maintain and harder to build.
<p>
Another motivation for the cross-module support is that two extension
modules that wrap the same class cannot both be imported into Python.
For example, if there are two modules <tt>A</tt> and <tt>B</tt> that
both wrap a given <tt>class X</tt>, this will work:
<pre>
import A
x = A.X()
</pre>
This will also work:
<pre>
import B
x = B.X()
</pre>
However, this will fail:
<pre>
import A
import B
python: /net/cci/rwgk/boost/boost/python/detail/extension_class.hpp:866:
static void boost::python::detail::class_registry&lt;X&gt;::register_class(boost::python::detail::extension_class_base *):
Assertion `static_class_object == 0' failed.
Abort
</pre>
A good solution is to wrap <tt>class X</tt> only once. Depending on the
situation, this could be done by module <tt>A</tt> or <tt>B</tt>, or an
additional small extension module that only wraps and exports
<tt>class X</tt>.
<p>
Finally, there can be important psychological or political reasons for
using the cross-module support. If a group of classes is lumped
together with many others in a huge module, the authors will have
difficulties in being identified with their work. The situation is
much more transparent if the work is represented by a module with a
recognizable name. This is not just a question of strong egos, but also
of getting credit and funding.
<hr>
<h2>Why not use <tt>export_converters()</tt> universally?</h2>
There is some overhead associated with the Boost.Python cross-module
support. Depending on the platform, the size of the code generated by
<tt>export_converters()</tt> is roughly 10%-20% of that generated
by <tt>class_builder&lt;&gt;</tt>. For a large extension module with
many wrapped classes, this could mean a significant difference.
Therefore the general recommendation is to use
<tt>export_converters()</tt> only for classes that are likely to
be used as function arguments or return values in other modules.
<hr>
&copy; Copyright Ralf W. Grosse-Kunstleve 2001. Permission to copy,
use, modify, sell and distribute this document is granted provided this
copyright notice appears in all copies. This document is provided "as
is" without express or implied warranty, and with no claim as to its
suitability for any purpose.
<p>
Updated: April 2001
</div>

192
doc/data_structures.txt Normal file
View File

@@ -0,0 +1,192 @@
Given a real Python class 'A', a wrapped C++ class 'B', and this definition:
class C(A, B):
def __init__(self):
B.__init__(self)
self.x = 1
...
c = C()
this diagram describes the internal structure of an instance of 'C', including
its inheritance relationships. Note that ExtensionClass<B> is derived from
Class<ExtensionInstance>, and is in fact identical for all intents and purposes.
MetaClass<ExtensionInstance>
+---------+ +---------+
types.ClassType: | | | |
| | | |
| | | |
+---------+ +---------+
^ ^ ^
PyClassObject | ExtensionClass<B> | |
A: +------------+ | B: +------------+ | |
| ob_type -+-+ | ob_type -+-----+ |
| | ()<--+- __bases__ | |
| | | __dict__ -+->{...} |
| | 'B'<-+- __name__ | |
+------------+ +------------+ |
^ ^ |
| | |
+-----+ +-------------+ |
| | |
| | Class<ExtensionInstance> |
| | C: +------------+ |
| | | ob_type -+------------+
tuple:(*, *)<--+- __bases__ |
| __dict__ -+->{__module__, <methods, etc.>}
'C' <-+- __name__ |
+------------+
^ (in case of inheritance from more than one
| extension class, this vector would contain
+---------------+ a pointer to an instance holder for the data
| of each corresponding C++ class)
| ExtensionInstance
| c: +---------------------+ std::vector<InstanceHolderBase>
+----+- __class__ | +---+--
| m_wrapped_objects -+->| * | ...
{'x': 1}<-+- __dict__ | +-|-+--
+---------------------+ | InstanceValueHolder<B>
| +--------------------------------+
+-->| (contains a C++ instance of B) |
+--------------------------------+
In our inheritance test cases in extclass_demo.cpp/test_extclass.py, we have the
following C++ inheritance hierarchy:
+-----+ +----+
| A1 | | A2 |
+-----+ +----+
^ ^ ^ ^ ^
| | | | |
+-----+ | +---------+-----+
| | | |
| +---+----------+
.......!...... | |
: A_callback : +-+--+ +-+--+
:............: | B1 | | B2 |
+----+ +----+
^
|
+-------+---------+
| |
+-+-+ ......!.......
| C | : B_callback :
+---+ :............:
A_callback and B_callback are used as part of the wrapping mechanism but not
represented in Python. C is also not represented in Python but is delivered
there polymorphically through a smart pointer.
This is the data structure in Python.
ExtensionClass<A1>
A1: +------------+
()<--+- __bases__ |
| __dict__ -+->{...}
+------------+
^
| ExtensionInstance
| a1: +---------------------+ vec InstanceValueHolder<A1,A_callback>
+---------+- __class__ | +---+ +---------------------+
| | m_wrapped_objects -+->| *-+-->| contains A_callback |
| +---------------------+ +---+ +---------------------+
|
| ExtensionInstance
| pa1_a1: +---------------------+ vec InstancePtrHolder<auto_ptr<A1>,A1>
+---------+- __class__ | +---+ +---+
| | m_wrapped_objects -+->| *-+-->| *-+-+ A1
| +---------------------+ +---+ +---+ | +---+
| +->| |
| ExtensionInstance +---+
| pb1_a1: +---------------------+ vec InstancePtrHolder<auto_ptr<A1>,A1>
+---------+- __class__ | +---+ +---+
| | m_wrapped_objects -+->| *-+-->| *-+-+ B1
| +---------------------+ +---+ +---+ | +---+
| +->| |
| ExtensionInstance +---+
| pb2_a1: +---------------------+ vec InstancePtrHolder<auto_ptr<A1>,A1>
+---------+- __class__ | +---+ +---+
| | m_wrapped_objects -+->| *-+-->| *-+-+ B2
| +---------------------+ +---+ +---+ | +---+
| +->| |
| +---+
| ExtensionClass<A1>
| A2: +------------+
| ()<--+- __bases__ |
| | __dict__ -+->{...}
| +------------+
| ^
| | ExtensionInstance
| a2: | +---------------------+ vec InstanceValueHolder<A2>
| +-+- __class__ | +---+ +-------------+
| | | m_wrapped_objects -+->| *-+-->| contains A2 |
| | +---------------------+ +---+ +-------------+
| |
| | ExtensionInstance
| pa2_a2: | +---------------------+ vec InstancePtrHolder<auto_ptr<A2>,A2>
| +-+- __class__ | +---+ +---+
| | | m_wrapped_objects -+->| *-+-->| *-+-+ A2
| | +---------------------+ +---+ +---+ | +---+
| | +->| |
| | ExtensionInstance +---+
| pb1_a2: | +---------------------+ vec InstancePtrHolder<auto_ptr<A2>,A2>
| +-+- __class__ | +---+ +---+
| | | m_wrapped_objects -+->| *-+-->| *-+-+ B1
| | +---------------------+ +---+ +---+ | +---+
| | +->| |
| | +---+
| |
| +---------------+------------------------------+
| | |
+------+-------------------------+-|----------------------------+ |
| | | | |
| Class<ExtensionInstance> | | ExtensionClass<B1> | | ExtensionClass<B1>
| DA1: +------------+ | | B1: +------------+ | | B2: +------------+
(*,)<---+- __bases__ | (*,*)<---+- __bases__ | (*,*)<---+- __bases__ |
| __dict__ -+->{...} | __dict__ -+->{...} | __dict__ -+->{...}
+------------+ +------------+ +------------+
^ ^ ^
| ExtensionInstance | |
| da1: +---------------------+ | vec InstanceValueHolder<A1,A_callback>
+-------+- __class__ | | +---+ +---------------------+ |
| m_wrapped_objects -+--|-->| *-+-->| contains A_callback | |
+---------------------+ | +---+ +---------------------+ |
+--------------------------------------+ |
| ExtensionInstance |
b1: | +---------------------+ vec InstanceValueHolder<B1,B_callback> |
+-+- __class__ | +---+ +---------------------+ |
| | m_wrapped_objects -+->| *-+-->| contains B_callback | |
| +---------------------+ +---+ +---------------------+ |
| |
| ExtensionInstance |
pb1_b1: | +---------------------+ vec InstancePtrHolder<auto_ptr<B1>,B1> |
+-+- __class__ | +---+ +---+ |
| | m_wrapped_objects -+->| *-+-->| *-+-+ B1 |
| +---------------------+ +---+ +---+ | +---+ |
| +->| | |
| ExtensionInstance +---+ |
pc_b1: | +---------------------+ vec InstancePtrHolder<auto_ptr<B1>,B1> |
+-+- __class__ | +---+ +---+ |
| | m_wrapped_objects -+->| *-+-->| *-+-+ C |
| +---------------------+ +---+ +---+ | +---+ |
| +->| | |
| +---+ |
| |
| Class<ExtensionInstance> +---------------------------------------+
| DB1: +------------+ | ExtensionInstance
(*,)<---+- __bases__ | a2: | +---------------------+ vec InstanceValueHolder<A2>
| __dict__ -+->{...} +-+- __class__ | +---+ +-------------+
+------------+ | m_wrapped_objects -+->| *-+-->| contains A2 |
^ +---------------------+ +---+ +-------------+
| ExtensionInstance
db1: | +---------------------+ vec InstanceValueHolder<B1,B_callback>
+-+- __class__ | +---+ +----------------------+
| m_wrapped_objects -+-->| *-+-->| contains B1_callback |
+---------------------+ +---+ +----------------------+

View File

@@ -6,33 +6,54 @@
<div>
<h1>
<img width="277" height="86" id="_x0000_i1025" align="center"
src="../../../c++boost.gif" alt= "c++boost.gif (8819 bytes)">Wrapping enums
src="../../../c++boost.gif" alt= "c++boost.gif (8819 bytes)"><br>
Wrapping enums
</h1>
<p>Because there is in general no way to deduce that a value of arbitrary type T
is an enumeration constant, py_cpp cannot automatically convert enum values to
and from Python. To handle this case, you need to decide how you want the enum
to show up in Python (since Python doesn't have enums). Once you have done that,
you can write some simple <code>from_python()</code> and
<code>to_python()</code> functions.
is an enumeration constant, the Boost Python Library cannot automatically
convert enum values to and from Python. To handle this case, you need to decide
how you want the enum to show up in Python (since Python doesn't have
enums). Once you have done that, you can write some simple
<code>from_python()</code> and <code>to_python()</code> functions.
<p>If you are satisfied with a Python int as a way to represent your enum
values, py_cpp provides a shorthand for these functions. You just need to
instantiate <code>boost::python::enum_as_int_converters&lt;EnumType&gt;</code> where
values, we provide a shorthand for these functions. You just need to cause
<code>boost::python::enum_as_int_converters&lt;EnumType&gt;</code> to be
instantiated, where
<code>EnumType</code> is your enumerated type. There are two convenient ways to do this:
<ol>
<li><blockquote>
<li>Explicit instantiation:
<blockquote><pre>
template class boost::python::enum_as_int_converters&lt;my_enum&gt;;
</blockquote></pre>
Some buggy C++ implementations require a class to be instantiated in the same
namespace in which it is defined. In that case, the simple incantation above becomes:
<blockquote>
<pre>
...
} // close my_namespace
// drop into namespace python and explicitly instantiate
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE // this is a gcc 2.95.2 bug workaround
template class enum_as_int_converters<extclass_demo::EnumOwner::enum_type>;
BOOST_PYTHON_END_CONVERSION_NAMESPACE
namespace boost { namespace python {
template class enum_as_int_converters&lt;my_enum_type&gt;;
}} // namespace boost::python
namespace my_namespace { // re-open my_namespace
...
</pre>
</blockquote>
<li><blockquote><pre>
<li>If you have such an implementation, you may find this technique more convenient
<blockquote><pre>
// instantiate as base class in any namespace
struct EnumTypeConverters
: boost::python::py_enum_as_int_converters<EnumType>
: boost::python::enum_as_int_converters&lt;EnumType&gt;
{
};
</blockquote></pre>
@@ -66,7 +87,8 @@ BOOST_PYTHON_END_CONVERSION_NAMESPACE
<code>long</code> type.
You may also want to add a bunch of lines like this to your module
initialization:
initialization. These bind the corresponding enum values to the appropriate
names so they can be used from Python:
<blockquote><pre>
mymodule.add(boost::python::to_python(enum_value_1), "enum_value_1");
@@ -78,17 +100,21 @@ You can also add these to an extension class definition, if your enum happens to
be local to a class and you want the analogous interface in Python:
<blockquote><pre>
my_class.add(boost::python::to_python(enum_value_1), "enum_value_1");
my_class.add(boost::python::to_python(enum_value_2), "enum_value_2");
my_class_builder.add(boost::python::to_python(enum_value_1), "enum_value_1");
my_class_builder.add(boost::python::to_python(enum_value_2), "enum_value_2");
...
</pre></blockquote>
<p>
Next: <a href="pointers.html">Pointers and Smart Pointers</a>
Previous: <a href="building.html">Building an Extension Module</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided &ldquo;as
is&rdquo; without express or implied warranty, and with no claim as to
notice appears in all copies. This document is provided ``as
is'' without express or implied warranty, and with no claim as to
its suitability for any purpose.
<p>
Updated: Nov 26, 2000
Updated: Mar 6, 2001
</div>

View File

@@ -1,7 +1,7 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<title>
A Simple Example Using py_cpp
A Simple Example
</title>
<div>
<h1>
@@ -9,7 +9,7 @@
"c++boost.gif (8819 bytes)">
</h1>
<h1>
A Simple Example Using py_cpp
A Simple Example
</h1>
<p>
Suppose we have the following C++ API which we want to expose in
@@ -18,104 +18,57 @@
<pre>
#include &lt;string&gt;
namespace hello {
  class world
  {
   public:
      world(int);
      ~world();
      std::string get() const { return "hi, world"; }
    ...
  };
  std::size_t length(const world&amp; x) { return std::strlen(x.get()); }
namespace { // Avoid cluttering the global namespace.
// A couple of simple C++ functions that we want to expose to Python.
std::string greet() { return "hello, world"; }
int square(int number) { return number * number; }
}
</pre>
</blockquote>
<p>
Here is the C++ code for a python module called <code>hello</code>
which exposes the API using py_cpp:
Here is the C++ code for a python module called <tt>getting_started1</tt>
which exposes the API.
<blockquote>
<pre>
#include <boost/python/class_builder.hpp>
// Python requires an exported function called init&lt;module-name&gt; in every
// extension module. This is where we build the module contents.
extern "C"
#ifdef _WIN32
__declspec(dllexport)
#endif
void inithello()
#include &lt;boost/python/class_builder.hpp&gt;
namespace python = boost::python;
BOOST_PYTHON_MODULE_INIT(getting_started1)
{
    try
    {
       // create an object representing this extension module
       boost::python::module_builder hello("hello");
       // Create the Python type object for our extension class
       boost::python::class_builder&lt;hello::world&gt; world_class(hello, "world");
       // Add the __init__ function
       world_class.def(boost::python::constructor&lt;int&gt;());
       // Add a regular member function
       world_class.def(&amp;hello::world::get, "get");
       // Add a regular function to the module
       hello.def(hello::length, "length");
    }
    catch(...)
    {
       boost::python::handle_exception();    // Deal with the exception for Python
    }
try
{
// Create an object representing this extension module.
python::module_builder this_module("getting_started1");
// Add regular functions to the module.
this_module.def(greet, "greet");
this_module.def(square, "square");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}
// Win32 DLL boilerplate
#if defined(_WIN32)
#include &lt;windows.h&gt;
extern "C" BOOL WINAPI DllMain(HINSTANCE, DWORD, LPVOID)
{
    return 1;
}
#endif // _WIN32
</pre>
</blockquote>
<p>
That's it! If we build this shared library and put it on our <code>
PYTHONPATH</code> we can now access our C++ class and function from
PYTHONPATH</code> we can now access our C++ functions from
Python.
<blockquote>
<pre>
&gt;&gt;&gt; import hello
&gt;&gt;&gt; hi_world = hello.world(3)
&gt;&gt;&gt; hi_world.get()
'hi, world'
&gt;&gt;&gt; hello.length(hi_world)
9
&gt;&gt;&gt; import getting_started1
&gt;&gt;&gt; print getting_started1.greet()
hello, world
&gt;&gt;&gt; number = 11
&gt;&gt;&gt; print number, '*', number, '=', getting_started1.square(number)
11 * 11 = 121
</pre>
</blockquote>
<p>
We can even make a subclass of <code>hello.world</code>:
<blockquote>
<pre>
&gt;&gt;&gt; class my_subclass(hello.world):
...     def get(self):
...         return 'hello, world'
...
&gt;&gt;&gt; y = my_subclass(4)
&gt;&gt;&gt; y.get()
'hello, world'
</pre>
</blockquote>
<p>
Pretty cool! You can't do that with an ordinary Python extension type!
<blockquote>
<pre>
&gt;&gt;&gt; hello.length(y)
9
</pre>
</blockquote>
<p>
Of course, you may now have a slightly empty feeling in the pit of
your little pythonic stomach. Perhaps you feel your subclass deserves
to have a <code>length()</code> of <code>12</code>? If so, <a href=
"overriding.html">read on</a>...
<p>
Previous: <a href="comparisons.html">Comparisons with other systems</a> Next: <a href="overriding.html">Overridable virtual functions</a> Up:
Next: <a href="exporting_classes.html">Exporting Classes</a>
Previous: <a href="comparisons.html">Comparisons with other systems</a> Up:
<a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
@@ -124,6 +77,6 @@ extern "C" BOOL WINAPI DllMain(HINSTANCE, DWORD, LPVOID)
express or implied warranty, and with no claim as to its suitability
for any purpose.
<p>
Updated: Nov 26, 2000
Updated: Mar 6, 2000
</div>

144
doc/exporting_classes.html Normal file
View File

@@ -0,0 +1,144 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<title>
Exporting Classes
</title>
<div>
<h1>
<img width="277" height="86" id="_x0000_i1025" src="../../../c++boost.gif" alt=
"c++boost.gif (8819 bytes)">
</h1>
<h1>
Exporting Classes
</h1>
<p>
Now let's expose a C++ class to Python:
<blockquote><pre>
#include &lt;iostream&gt;
#include &lt;string&gt;
namespace { // Avoid cluttering the global namespace.
// A friendly class.
class hello
{
public:
hello(const std::string&amp; country) { this-&gt;country = country; }
std::string greet() const { return "Hello from " + country; }
private:
std::string country;
};
// A function taking a hello object as an argument.
std::string invite(const hello&amp; w) {
return w.greet() + "! Please come soon!";
}
}
</blockquote></pre> <p>
To expose the class, we use a <tt>class_builder</tt> in addition to the
<tt>module_builder</tt> from the previous example. Class member functions
are exposed by using the <tt>def()</tt> member function on the
<tt>class_builder</tt>:
<blockquote><pre>
#include &lt;boost/python/class_builder.hpp&gt;
namespace python = boost::python;
BOOST_PYTHON_MODULE_INIT(getting_started2)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("getting_started2");
// Create the Python type object for our extension class.
python::class_builder&lt;hello&gt; hello_class(this_module, "hello");
// Add the __init__ function.
hello_class.def(python::constructor&lt;std::string&gt;());
// Add a regular member function.
hello_class.def(&amp;hello::greet, "greet");
// Add invite() as a regular function to the module.
this_module.def(invite, "invite");
// Even better, invite() can also be made a member of hello_class!!!
hello_class.def(invite, "invite");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}
</blockquote></pre>
<p>
Now we can use the class normally from Python:
<blockquote><pre>
&gt;&gt;&gt; from getting_started2 import *
&gt;&gt;&gt; hi = hello('California')
&gt;&gt;&gt; hi.greet()
'Hello from California'
&gt;&gt;&gt; invite(hi)
'Hello from California! Please come soon!'
&gt;&gt;&gt; hi.invite()
'Hello from California! Please come soon!'
</blockquote></pre>
Notes:<ul>
<li> We expose the class' constructor by calling <tt>def()</tt> on the
<tt>class_builder</tt> with an argument whose type is
<tt>constructor&lt;</tt><i>params</i><tt>&gt;</tt>, where <i>params</i>
matches the list of constructor argument types:
<li>Regular member functions are defined by calling <tt>def()</tt> with a
member function pointer and its Python name:
<li>Any function added to a class whose initial argument matches the class (or
any base) will act like a member function in Python.
</ul>
<p>
We can even make a subclass of <code>hello.world</code>:
<blockquote><pre>
&gt;&gt;&gt; class wordy(hello):
... def greet(self):
... return hello.greet(self) + ', where the weather is fine'
...
&gt;&gt;&gt; hi2 = wordy('Florida')
&gt;&gt;&gt; hi2.greet()
'Hello from Florida, where the weather is fine'
&gt;&gt;&gt; invite(hi2)
'Hello from Florida! Please come soon!'
</blockquote></pre>
<p>
Pretty cool! You can't do that with an ordinary Python extension type!
Of course, you may now have a slightly empty feeling in the pit of
your little pythonic stomach. Perhaps you wanted to see the following
<tt>wordy</tt> invitation:
<blockquote><pre>
'Hello from Florida, where the weather is fine! Please come soon!'
</blockquote></pre>
After all, <tt>invite</tt> calls <tt>hello::greet()</tt>, and you
reimplemented that in your Python subclass, <tt>wordy</tt>. If so, <a
href= "overriding.html">read on</a>...
<p>
Next: <a href="overriding.html">Overridable virtual functions</a>
Previous: <a href="example1.html">A Simple Example</a> Up:
<a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided "as is" without
express or implied warranty, and with no claim as to its suitability
for any purpose.
<p>
Updated: Mar 6, 2001
</div>

View File

@@ -38,11 +38,11 @@
</ul>
This last item typically occupies a great deal of code in an extension
module. Remember that Python is a completely dynamic language. A callable
object receives its arguments in a tuple; it is up to that object to
extract those arguments from the tuple, check their types, and raise
appropriate exceptions. There are numerous other tedious details that need
to be managed; too many to mention here. Py_cpp is designed to lift most of
that burden.<br>
object receives its arguments in a tuple; it is up to that object to extract
those arguments from the tuple, check their types, and raise appropriate
exceptions. There are numerous other tedious details that need to be
managed; too many to mention here. The Boost Python Library is designed to
lift most of that burden.<br>
<br>
<p>
@@ -56,10 +56,10 @@
sublcassing the extension type. Aside from being tedious, it's not really
the same as having a true class, because there's no way for the user to
override a method of the extension type which is called from the
extension module. Py_cpp solves this problem by taking advantage of <a
extension module. Boost.Python solves this problem by taking advantage of <a
href="http://www.python.org/doc/essays/metaclasses/">Python's metaclass
feature</a> to provide objects which look, walk, and hiss almost exactly
like regular Python classes. Py_cpp classes are actually cleaner than
like regular Python classes. Boost.Python classes are actually cleaner than
Python classes in some subtle ways; a more detailed discussion will
follow (someday).</p>
<p>Next: <a href="comparisons.html">Comparisons with Other Systems</a> Up: <a

View File

@@ -1,29 +1,24 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>
py_cpp Python/C++ binding documentation
The Boost Python Library (Boost.Python)
</title>
<h1>
<img src="../../../c++boost.gif" alt="c++boost.gif (8819 bytes)" width="277"
align="center" height="86"> py_cpp<a href="#naming_contest">*</a>
align="center" height="86"><br>The Boost Python Library (Boost.Python)
</h1>
<p>
The source code for py_cpp, including a MSVC demo project is available <a
href="py_cpp_20001106.zip">here</a>.
<h2>Synopsis</h2>
<p>
py_cpp is a system for quickly and easily interfacing C++ code with <a
href="http:www.python.org">Python</a> such that the Python interface is
Use the Boost Python Library to quickly and easily export a C++ library to <a
href="http://www.python.org">Python</a> such that the Python interface is
very similar to the C++ interface. It is designed to be minimally
intrusive on your C++ design. In most cases, you should not have to alter
your C++ classes in any way in order to use them with py_cpp. The system
<em>should</em> simply &ldquo;reflect&rdquo; your C++ classes and functions into
Python. The major features of py_cpp include support for:
your C++ classes in any way in order to use them with Boost.Python. The system
<em>should</em> simply ``reflect'' your C++ classes and functions into
Python. The major features of Boost.Python include support for:
<ul>
<li><a href="inheritance.hml">Subclassing extension types in Python</a>
<li><a href="inheritance.html">Subclassing extension types in Python</a>
<li><a href="overriding.html">Overriding virtual functions in Python</a>
<li><a href="overloading.html">[Member] function Overloading</a>
<li><a href="special.html#numeric_auto">Automatic wrapping of numeric operators</a>
@@ -32,9 +27,27 @@ among others.
<h2>Supported Platforms</h2>
<p>py_cpp has been tested in the following configurations:
<p>Boost.Python is known to have been tested in the following configurations:
<ul>
<li>Against Python 2.0 using the following compiler/library combinations:
<ul>
<li><a
href="http://msdn.microsoft.com/vstudio/sp/vs6sp4/dnldoverview.asp">MSVC++6sp4</a>
with the native library.
<li>An upcoming release of <a
href="http://www.metrowerks.com/products/windows/">Metrowerks
CodeWarrior Pro6 for Windows</a> with the native library (the first
release has a bug that's fatal to Boost.Python)
<li><a
href="http://developer.intel.com/software/products/compilers/c50/">Intel
C++ 5.0</a>. Compilation succeeds, but tests <font
color="#FF0000"><b>FAILED at runtime</b></font> due to a bug in its
exception-handling implementation.
</ul>
<li>Against Python 1.5.2 using the following compiler/library:
<ul>
@@ -56,29 +69,17 @@ among others.
href="mailto:rwgk@cci.lbl.gov">Ralf W. Grosse-Kunstleve</a>]
<li>An upcoming release of <a href="http://www.metrowerks.com/products/windows/">Metrowerks CodeWarrior
Pro6 for Windows</a> (the first release has a bug that's fatal to py_cpp)
Pro6 for Windows</a> (the first release has a bug that's fatal to Boost.Python)
</ul>
<br>
<li>Against Python 2.0 using the following compiler/library combinations:
<ul>
<li><a
href="http://msdn.microsoft.com/vstudio/sp/vs6sp4/dnldoverview.asp">MSVC++6sp4</a> [by
<a href="mailto:aleaxit@yahoo.com">Alex Martelli</a>]
</ul>
</ul>
<p>Py_cpp requires the <a href="http://www.boost.org">boost</a> libraries, and is
has been accepted for inclusion into the boost libraries pending &ldquo;boostification&ldquo;
(completion of the documentation, change in some naming conventions and
resolution of some namespace issues).
<h2>Credits</h2>
<ul>
<li><a href="mailto:abrahams@mediaone.net">David Abrahams</a> originated
and wrote py_cpp.
<li><a href="../../../people/dave_abrahams.htm">David Abrahams</a> originated
and wrote most of the library, and continues to coordinate development.
<li><a href="mailto:koethe@informatik.uni-hamburg.de">Ullrich Koethe</a>
had independently developed a similar system. When he discovered py_cpp,
had independently developed a similar system. When he discovered Boost.Python,
he generously contributed countless hours of coding and much insight into
improving it. He is responsible for an early version of the support for <a
href="overloading.html">function overloading</a> and wrote the support for
@@ -87,16 +88,22 @@ among others.
Python and C++, and has designed an extremely easy-to-use way of
exposing <a href="special.html#numeric">numeric operators</a>, including
a way to avoid explicit coercion by means of overloading.
<li><a href="http://cci.lbl.gov/staff/ralf_grosse-kunstleve.html">Ralf W.
Grosse-Kunstleve</a> contributed <a href="pickle.html">pickle support</a>
and numerous other small improvements. He's working on a way to allow
types exported by multiple modules to interact.
<li>The members of the boost mailing list and the Python community supplied
invaluable early feedback. In particular, Ron Clarke, Mark Evans, Anton
Gluck, Ralf W. Grosse-Kunstleve, Prabhu Ramachandran, and Barry Scott took
the brave step of trying to use py_cpp while it was still in early stages
of development.
<li>The members of the boost mailing list and the Python community
supplied invaluable early feedback. In particular, Ron Clarke, Mark Evans,
Anton Gluck, Chuck Ingold, Prabhu Ramachandran, and Barry Scott took the
brave step of trying to use Boost.Python while it was still in early
stages of development.
<li>The development of py_cpp wouldn't have been
possible without the generous support of <a href="http://www.dragonsys.com/">Dragon Systems/Lernout and
Hauspie, Inc</a> who supported its development as an open-source project.
<li>The development of Boost.Python wouldn't have been possible without
the generous support of <a href="http://www.dragonsys.com/">Dragon
Systems/Lernout and Hauspie, Inc</a> who supported its development as an
open-source project.
</ul>
<h2>Table of Contents</h2>
@@ -105,10 +112,12 @@ among others.
<li><a href="extending.html">A Brief Introduction to writing Python
extension modules</a>
<li><a href="comparisons.html">Comparisons between py_cpp and other
<li><a href="comparisons.html">Comparisons between Boost.Python and other
systems for extending Python</a>
<li><a href="example1.html">A Simple Example Using py_cpp</a>
<li><a href="example1.html">A Simple Example</a>
<li><a href="exporting_classes.html">Exporting Classes</a>
<li><a href="overriding.html">Overridable Virtual Functions</a>
@@ -120,92 +129,38 @@ among others.
<li><a href="under-the-hood.html">A Peek Under the Hood</a>
<li><a href="building.html">Building a Module with Py_cpp</a>
<li><a href="building.html">Building an Extension Module</a>
<li>Advanced Topics
<li><a href="pickle.html">Pickle Support</a>
<ol>
<li>class_builder&lt;&gt;
<li><a href="cross_module.html">Cross-Extension-Module Dependencies</a>
<li><a href="enums.html">enums</a>
<li><a href="enums.html">Wrapping Enums</a>
<li>References
<li><a href="pointers.html">Pointers and Smart Pointers</a>
<li><a href="pointers.html">Pointers and Smart Pointers</a>
<li>Built-in Python Types
<li>Other Extension Types
<li>Templates
</ol>
<li><a href="data_structures.txt">Internal Data Structures</a>
</ol>
<p>
More sophisticated examples are given in
<code>extclass_demo.cpp</code>, <code> extclass_demo.h</code>, and <code>
test_extclass.py</code> in the <a href="py_cpp.tgz">source code
archive</a>. There's much more here, and much more documentation to
come...
Documentation is a major ongoing project; assistance is greatly
appreciated! In the meantime, useful examples of every Boost.Python feature should
be evident in the regression test files <code>test/comprehensive.[<a
href="../test/comprehensive.py">py</a>/<a
href="../test/comprehensive.hpp">hpp</a>/<a
href="../test/comprehensive.cpp">cpp</a>]</code>
<p>
Questions should be directed to <a href=
"http://www.egroups.com/list/boost">the boost mailing list</a>.
<h2>Naming Contest</h2>
"http://www.yahoogroups.com/list/boost">the boost mailing list</a>.
<p>
Yes, I know py_cpp is a lousy name. Problem is, the best names my puny
imagination can muster (IDLE and GRAIL) are taken, so I'm holding a
naming contest. First prize? You get to pick the name&lt;0.2wink&gt; and
you will be credited in the documentation. Names that have been suggested
so far include:
<ul>
<li>
Py++
<li>
Python++
<li>
Coil
<li>
SnakeSkin
<li>
CCCP - <b>C</b>onvert <b>C</b>++ <b>
C</b>lasses to <b>P</b>ython
<li>
C<sup>3</sup>PO - <b>C</b>onvert <b>C</b>++
<b>C</b>lasses to <b>P</b>ython <b>
O</b>bjects
<li>
PALIN - <b>P</b>ython <b>
A</b>ugmented-<b>L</b>anguage <b>
IN</b>tegration
<li>
CLEESE - <b>C</b>++ <b>L</b>anguage <b>E</b>xtension <b>E</b>nvironment
<b>S</b>upremely <b>E</b>asy
<li>
JONES - <b>J</b>ust <b>O</b>bscenely <b>N</b>eat <b>E</b>xtension
<b>S</b>ystem
<li>
C-thru
<li>
SeamlessC
<li>
BorderCrossing
<li>
Perseus (because he solved a hairy problem involving snakes by using
reflection and was invisible most of the time).
</ul>
Please <a href="http://www.egroups.com/list/boost">post</a> or send <a
href="http:mailto:abrahams@mediaone.net">me</a> your suggestions!<br>
<br>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
&copy; Copyright David Abrahams 2001. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided &ldquo;as is&rdquo; without
notice appears in all copies. This document is provided ``as is'' without
express or implied warranty, and with no claim as to its suitability for
any purpose.
<p>
Updated: Nov 26, 2000
Updated: Mar 6, 2001

View File

@@ -12,11 +12,11 @@
<h2>Inheritance in Python</h2>
<p>
Py_cpp extension classes support single and multiple-inheritance in
Python, just like regular Python classes. You can mix built-in Python
classes with py_cpp extension classes in a derived class' tuple of
bases. Whenever a py_cpp extension class is among the bases for a new
class in Python, the result is an extension class:
Boost.Python extension classes support single and multiple-inheritance in
Python, just like regular Python classes. You can arbitrarily mix
built-in Python classes with extension classes in a derived class'
tuple of bases. Whenever a Boost.Python extension class is among the bases for a
new class in Python, the result is an extension class:
<blockquote>
<pre>
&gt;&gt;&gt; class MyPythonClass:
@@ -37,7 +37,7 @@
<h2><a name="implicit_conversion">Reflecting C++ Inheritance Relationships</a></h2>
<p>
Py_cpp also allows us to represent C++ inheritance relationships so that
Boost.Python also allows us to represent C++ inheritance relationships so that
wrapped derived classes may be passed where values, pointers, or
references to a base class are expected as arguments. The
<code>declare_base</code> member function of
@@ -71,22 +71,22 @@ int get_derived_x(const Derived& d) {
return d.x;
}
<hr>
#include <boost/python/class_builder.hpp>
extern "C"
#ifdef _WIN32
__declspec(dllexport)
#endif
void initmy_module()
#include &lt;boost/python/class_builder.hpp&gt;
// namespace alias for code brevity
namespace python = boost::python;
BOOST_PYTHON_MODULE_INIT(my_module)
{
    try
    {
       boost::python::module_builder my_module("my_module");
       python::module_builder my_module("my_module");
       boost::python::class_builder&lt;Base&gt; base_class(my_module, "Base");
       base_class.def(boost::python::constructor&lt;void&gt;());
       python::class_builder&lt;Base&gt; base_class(my_module, "Base");
       base_class.def(python::constructor&lt;void&gt;());
       boost::python::class_builder&lt;Derived&gt; derived_class(my_module, "Derived");
       derived_class.def(boost::python::constructor&lt;void&gt;());
       python::class_builder&lt;Derived&gt; derived_class(my_module, "Derived");
       derived_class.def(python::constructor&lt;void&gt;());
<b>// Establish the inheritance relationship between Base and Derived
derived_class.declare_base(base_class);</b>
@@ -96,7 +96,7 @@ void initmy_module()
    }
    catch(...)
    {
       boost::python::handle_exception();    // Deal with the exception for Python
       python::handle_exception();    // Deal with the exception for Python
    }
}
</pre>
@@ -111,11 +111,19 @@ void initmy_module()
&gt;&gt;&gt; derived = Derived()
&gt;&gt;&gt; get_name(base)
'Base'
</pre><i>objects of wrapped class Derived may be passed where Base is expected</i><pre>
</pre>
</blockquote>
<i>objects of wrapped class Derived may be passed where Base is expected</i>
<blockquote>
<pre>
&gt;&gt;&gt; get_name(derived)
'Derived'
</pre><i>objects of wrapped class Derived can be passed where Derived is
expected but where type information has been lost.</i><pre>
</pre>
</blockquote>
<i>objects of wrapped class Derived can be passed where Derived is
expected but where type information has been lost.</i>
<blockquote>
<pre>
&gt;&gt;&gt; get_derived_x(derived_as_base())
-1
</pre>
@@ -135,12 +143,12 @@ struct Base2 {};
struct Derived2 { int f(); };
<hr>
...
   boost::python::class_builder&lt;Base&gt; base2_class(my_module, "Base2");
   base2_class.def(boost::python::constructor&lt;void&gt;());
   python::class_builder&lt;Base&gt; base2_class(my_module, "Base2");
   base2_class.def(python::constructor&lt;void&gt;());
   boost::python::class_builder&lt;Derived2&gt; derived2_class(my_module, "Derived2");
   derived2_class.def(boost::python::constructor&lt;void&gt;());
derived_class.declare_base(base_class, <b>boost::python::without_downcast</b>);
   python::class_builder&lt;Derived2&gt; derived2_class(my_module, "Derived2");
   derived2_class.def(python::constructor&lt;void&gt;());
derived_class.declare_base(base_class, <b>python::without_downcast</b>);
</pre>
</blockquote>
@@ -150,8 +158,8 @@ struct Derived2 { int f(); };
references, or values.
<p>
Next: <a href="special.html">Special Method and Operator Support</a>
Previous: <a href="overloading.html">Function Overloading</a>
Next: <a href="special.html">Special Method Names</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,

View File

@@ -29,7 +29,7 @@ private:
};
...
void initoverload_demo()
BOOST_PYTHON_MODULE_INIT(overload_demo)
{
    try
    {
@@ -113,18 +113,17 @@ namespace scope as Python member functions.
<h2>Overload Resolution</h2>
<p>
The function overload resolution mechanism in py_cpp works as
follows:
The function overload resolution mechanism works as follows:
<ul>
<li>Attribute lookup for extension classes proceeds in <a
href="http://www.pythonlabs.com/pub/www.python.org/doc/current/tut/node11.html#SECTION0011510000000000000000">the
href="http://www.python.org/doc/current/tut/node11.html#SECTION0011510000000000000000">the
usual Python way</a> using a depth-first, left-to-right search. When a
class is found which has a matching attribute, only functions overloaded
in the context of that class are candidates for overload resolution. In
this sense, overload resolution mirrors the C++ mechanism, where a name
in a derived class &ldquo;hides&rdquo; all functions with the same name from a base
in a derived class ``hides'' all functions with the same name from a base
class.
<p>
@@ -133,24 +132,24 @@ namespace scope as Python member functions.
<code>def()</code>ed. The first function whose signature can be made to
match each argument passed is the one which is ultimately called.
This means in particular that you cannot overload the same function on
both &ldquo;<code>int</code>&rdquo; and &ldquo;<code>float</code>&rdquo; because Python
both ``<code>int</code>'' and ``<code>float</code>'' because Python
automatically converts either of the two types into the other one.
If the &ldquo;<code>float</code>&rdquo; overload is found first, it is used
also used for arguments of type &ldquo;<code>int</code>&rdquo; as well, and the
&ldquo;<code>int</code>&rdquo; version of the function is never invoked.
If the ``<code>float</code>'' overload is found first, it is used
also used for arguments of type ``<code>int</code>'' as well, and the
``<code>int</code>'' version of the function is never invoked.
</ul>
<p>
Prev: <a href="overriding.html">Overridable Virtual Functions</a>
Next: <a href="inheritance.html">Special Method Names</a>
Next: <a href="inheritance.html">Inheritance</a>
Previous: <a href="overriding.html">Overridable Virtual Functions</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
&copy; Copyright David Abrahams 2001. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided &ldquo;as
is&rdquo; without express or implied warranty, and with no claim as to
notice appears in all copies. This document is provided ``as
is'' without express or implied warranty, and with no claim as to
its suitability for any purpose.
<p>
Updated: Nov 26, 2000
Updated: Mar 6, 2001
</div>

View File

@@ -9,7 +9,7 @@
<h1>Overridable Virtual Functions</h1>
<p>
In the <a href="example1.html">previous example</a> we exposed a simple
In the <a href="exporting_classes.html">previous example</a> we exposed a simple
C++ class in Python and showed that we could write a subclass. We even
redefined one of the functions in our derived class. Now we will learn
how to make the function behave virtually <em>when called from C++</em>.
@@ -17,16 +17,17 @@
<h2><a name="overriding_example">Example</a></h2>
<p>In this example, it is assumed that <code>world::get()</code> is a virtual
<p>In this example, it is assumed that <code>hello::greet()</code> is a virtual
member function:
<blockquote><pre>
class world
class hello
{
public:
   world(int);
    virtual ~world();
    <b>virtual</b> std::string get() const { return "hi, world"; }
hello(const std::string&amp; country) { this-&gt;country = country; }
<b>virtual</b> std::string greet() const { return "Hello from " + country; }
    virtual ~hello(); // Good practice
...
};
</pre></blockquote>
@@ -37,21 +38,28 @@ class world
<ol>
<li><a name="derived_1">A</a> <code>PyObject*</code> data member that holds a
reference to the corresponding Python object.
<li><a name="derived_1">A</a> <code>PyObject*</code> data member (usually
called <tt>self</tt>) that holds a pointer to the Python object corresponding
to our C++ <tt>hello</tt> instance.
<li><a name="derived_2">A</a> constructor for each exposed constructor of the
base class which stores an additional initial <code>PyObject*</code> argument
in the data member described above.
<li><a name="derived_2">For</a> each exposed constructor of the
base class <tt>T</tt>, a constructor which takes the same parameters preceded by an initial
<code>PyObject*</code> argument. The initial argument should be stored in the <tt>self</tt> data
member described above.
<li><a name="derived_3">An</a> implementation of each virtual function you may
<li><a name="derived_3">If</a> the class being wrapped is ever returned <i>by
value</i> from a wrapped function, be sure you do the same for the
<tt>T</tt>'s copy constructor: you'll need a constructor taking arguments
<tt>(PyObject*,&nbsp;const&nbsp;T&amp;)</tt>.
<li><a name="derived_4">An</a> implementation of each virtual function you may
wish to override in Python which uses
<code>boost::python::callback&lt<i>return-type</i>&gt;::call_method()</code> to call
<tt>callback&lt</tt><i>return-type</i><tt>&gt;::call_method(self,&nbsp;&quot;</tt><i>name</i><tt>&quot;,&nbsp;</tt><i>args...</i><tt>)</tt> to call
the Python override.
<li><a name="derived_4">For</a> each non-pure virtual function meant to be
<li><a name="derived_5">For</a> each non-pure virtual function meant to be
overridable from Python, a static member function (or a free function) taking
a reference or pointer to the base type as the first parameter and which
a reference or pointer to the <tt>T</tt> as the first parameter and which
forwards any additional parameters neccessary to the <i>default</i>
implementation of the virtual function. See also <a href="#private">this
note</a> if the base class virtual function is private.
@@ -59,52 +67,60 @@ class world
</ol>
<blockquote><pre>
struct world_callback : world
struct hello_callback : hello
{
world_callback(PyObject* self, int x) // <a href="#derived_2">2</a>
: world(x),
m_self(self) {}
// hello constructor storing initial self_ parameter
hello_callback(PyObject* self_, const std::string&amp; x) // <a href="#derived_2">2</a>
: hello(x), self(self_) {}
std::string get() const // <a href="#derived_3">3</a>
{ return boost::python::callback&lt;std::string&gt;::call_method(m_self, "get"); }
// In case hello is returned by-value from a wrapped function
hello_callback(PyObject* self_, const hello&amp; x) // <a href="#derived_3">3</a>
: hello(x), self(self_) {}
static std::string <a name= "default_implementation">default_get</a>(const hello::world& self) const // <a href="#derived_4">4</a>
{ return self.world::get(); }
// Override greet to call back into Python
std::string greet() const // <a href="#derived_4">4</a>
{ return boost::python::callback&lt;std::string&gt;::call_method(self, "greet"); }
// Supplies the default implementation of greet
static std::string <a name= "default_implementation">default_greet</a>(const hello& self_) const // <a href="#derived_5">5</a>
{ return self_.hello::greet(); }
private:
PyObject* m_self; // <a href="#derived_1">1</a>
PyObject* self; // <a href="#derived_1">1</a>
};
</pre></blockquote>
<p>
Finally, we add <code>world_callback</code> to the <code>
class_builder&lt;&gt;</code> declaration in our module initialization
function, and when we define the function, we must tell py_cpp about the default
Finally, we add <tt>hello_callback</tt> to the <tt>
class_builder&lt;&gt;</tt> declaration in our module initialization
function, and when we define the function, we must tell Boost.Python about the default
implementation:
<blockquote><pre>
// Create the <a name=
"world_class">Python type object</a> for our extension class
boost::python::class_builder&lt;hello::world<strong>,world_callback&gt;</strong> world_class(hello, "world");
"hello_class">Python type object</a> for our extension class
boost::python::class_builder&lt;hello<strong>,hello_callback&gt;</strong> hello_class(hello, "hello");
// Add a virtual member function
world_class.def(&amp;world::get, "get", &amp;<b>world_callback::default_get</b>);
hello_class.def(&amp;hello::greet, "greet", &amp;<b>hello_callback::default_greet</b>);
</pre></blockquote>
<p>
Now our subclass of <code>hello.world</code> behaves as expected:
Now our Python subclass of <tt>hello</tt> behaves as expected:
<blockquote><pre>
&gt;&gt;&gt; class my_subclass(hello.world):
... def get(self):
... return 'hello, world'
&gt;&gt;&gt; class wordy(hello):
... def greet(self):
... return hello.greet(self) + ', where the weather is fine'
...
&gt;&gt;&gt; hello.length(my_subclass())
12
&gt;&gt;&gt; hi2 = wordy('Florida')
&gt;&gt;&gt; hi2.greet()
'Hello from Florida, where the weather is fine'
&gt;&gt;&gt; invite(hi2)
'Hello from Florida, where the weather is fine! Please come soon!'
</pre></blockquote>
<p>
<a name="why_derived">*</a>You may ask, "Why do we need this derived
class? This could have been designed so that everything gets done right
inside of <code>hello::world</code>." One of the goals of py_cpp is to be
inside of <tt>hello</tt>." One of the goals of Boost.Python is to be
minimally intrusive on an existing C++ design. In principle, it should be
possible to expose the interface for a 3rd party library without changing
it. To unintrusively hook into the virtual functions so that a Python
@@ -117,32 +133,29 @@ world_class.def(&amp;world::get, "get", &amp;<b>world_callback::default_get</b>)
deal with than a virtual function with a default implementation. First of
all, you obviously don't need to <a href="#default_implementation"> supply
a default implementation</a>. Secondly, you don't need to call
<code>def()</code> on the <code>extension_class&lt;&gt;</code> instance
<tt>def()</tt> on the <tt>extension_class&lt;&gt;</tt> instance
for the virtual function. In fact, you wouldn't <em>want</em> to: if the
corresponding attribute on the Python class stays undefined, you'll get an
<code>AttributeError</code> in Python when you try to call the function,
<tt>AttributeError</tt> in Python when you try to call the function,
indicating that it should have been implemented. For example:
<blockquote>
<pre>
struct baz {
<strong>virtual</strong> int pure(int) = 0;
int calls_pure(int x) { return pure(x) + 1000; }
};
struct baz_callback {
int pure(int x) { boost::python::callback&lt;int&gt;::call_method(m_self, "pure", x); }
};
extern "C"
#ifdef _WIN32
__declspec(dllexport)
#endif
initfoobar()
BOOST_PYTHON_MODULE_INIT(foobar)
{
try
{
boost::python::module_builder foobar("foobar");
boost::python::class_builder&lt;baz,baz_callback&gt; baz_class("baz");
baz_class.def(&amp;baz::pure, "pure");
baz_class.def(&amp;baz::calls_pure, "calls_pure");
}
catch(...)
{
@@ -161,12 +174,18 @@ initfoobar()
Traceback (innermost last):
File "&lt;stdin&gt;", line 1, in ?
AttributeError: pure
&gt;&gt;&gt; x.calls_pure(1)
Traceback (innermost last):
File "&lt;stdin&gt;", line 1, in ?
AttributeError: pure
&gt;&gt;&gt; class mumble(baz):
... def pure(self, x): return x + 1
...
&gt;&gt;&gt; y = mumble()
&gt;&gt;&gt; y.pure(99)
100
&gt;&gt;&gt; y.calls_pure(99)
1100
</pre></blockquote>
<a name="private"><h2>Private Non-Pure Virtual Functions</h2></a>
@@ -180,16 +199,17 @@ this limited way without breaking binary compatibility (though it will certainly
break the <a
href="http://cs.calvin.edu/c++/C++Standard-Nov97/basic.html#basic.def.odr">ODR</a>).
<hr>
<p>
Prev: <a href="example1.html">A Simple Example Using py_cpp</a> Next: <a
href="overloading.html">Function Overloading</a> Up: <a href=
"index.html">Top</a>
Next: <a href="overloading.html">Function Overloading</a>
Previous: <a href="exporting_classes.html">Exporting Classes</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
&copy; Copyright David Abrahams 2001. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided "as is" without
express or implied warranty, and with no claim as to its suitability for
any purpose.
<p>
Updated: Nov 26, 2000
Updated: Mar 21, 2001

272
doc/pickle.html Normal file
View File

@@ -0,0 +1,272 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<title>Boost.Python Pickle Support</title>
<div>
<img src="../../../c++boost.gif"
alt="c++boost.gif (8819 bytes)"
align="center"
width="277" height="86">
<hr>
<h1>Boost.Python Pickle Support</h1>
Pickle is a Python module for object serialization, also known
as persistence, marshalling, or flattening.
<p>
It is often necessary to save and restore the contents of an object to
a file. One approach to this problem is to write a pair of functions
that read and write data from a file in a special format. A powerful
alternative approach is to use Python's pickle module. Exploiting
Python's ability for introspection, the pickle module recursively
converts nearly arbitrary Python objects into a stream of bytes that
can be written to a file.
<p>
The Boost Python Library supports the pickle module by emulating the
interface implemented by Jim Fulton's ExtensionClass module that is
included in the
<a href="http://www.zope.org/"
>ZOPE</a>
distribution.
This interface is similar to that for regular Python classes as
described in detail in the
<a href="http://www.python.org/doc/current/lib/module-pickle.html"
>Python Library Reference for pickle.</a>
<hr>
<h2>The Boost.Python Pickle Interface</h2>
At the user level, the Boost.Python pickle interface involves three special
methods:
<dl>
<dt>
<strong><tt>__getinitargs__</tt></strong>
<dd>
When an instance of a Boost.Python extension class is pickled, the
pickler tests if the instance has a <tt>__getinitargs__</tt> method.
This method must return a Python tuple (it is most convenient to use
a boost::python::tuple). When the instance is restored by the
unpickler, the contents of this tuple are used as the arguments for
the class constructor.
<p>
If <tt>__getinitargs__</tt> is not defined, the class constructor
will be called without arguments.
<p>
<dt>
<strong><tt>__getstate__</tt></strong>
<dd>
When an instance of a Boost.Python extension class is pickled, the
pickler tests if the instance has a <tt>__getstate__</tt> method.
This method should return a Python object representing the state of
the instance.
<p>
If <tt>__getstate__</tt> is not defined, the instance's
<tt>__dict__</tt> is pickled (if it is not empty).
<p>
<dt>
<strong><tt>__setstate__</tt></strong>
<dd>
When an instance of a Boost.Python extension class is restored by the
unpickler, it is first constructed using the result of
<tt>__getinitargs__</tt> as arguments (see above). Subsequently the
unpickler tests if the new instance has a <tt>__setstate__</tt>
method. If so, this method is called with the result of
<tt>__getstate__</tt> (a Python object) as the argument.
<p>
If <tt>__setstate__</tt> is not defined, the result of
<tt>__getstate__</tt> must be a Python dictionary. The items of this
dictionary are added to the instance's <tt>__dict__</tt>.
</dl>
If both <tt>__getstate__</tt> and <tt>__setstate__</tt> are defined,
the Python object returned by <tt>__getstate__</tt> need not be a
dictionary. The <tt>__getstate__</tt> and <tt>__setstate__</tt> methods
can do what they want.
<hr>
<h2>Pitfalls and Safety Guards</h2>
In Boost.Python extension modules with many extension classes,
providing complete pickle support for all classes would be a
significant overhead. In general complete pickle support should only be
implemented for extension classes that will eventually be pickled.
However, the author of a Boost.Python extension module might not
anticipate correctly which classes need support for pickle.
Unfortunately, the pickle protocol described above has two important
pitfalls that the end user of a Boost.Python extension module might not
be aware of:
<dl>
<dt>
<strong>Pitfall 1:</strong>
Both <tt>__getinitargs__</tt> and <tt>__getstate__</tt> are not defined.
<dd>
In this situation the unpickler calls the class constructor without
arguments and then adds the <tt>__dict__</tt> that was pickled by
default to that of the new instance.
<p>
However, most C++ classes wrapped with Boost.Python will have member
data that are not restored correctly by this procedure. To alert the
user to this problem, a safety guard is provided. If both
<tt>__getinitargs__</tt> and <tt>__getstate__</tt> are not defined,
Boost.Python tests if the class has an attribute
<tt>__dict_defines_state__</tt>. An exception is raised if this
attribute is not defined:
<pre>
RuntimeError: Incomplete pickle support (__dict_defines_state__ not set)
</pre>
In the rare cases where this is not the desired behavior, the safety
guard can deliberately be disabled. The corresponding C++ code for
this is, e.g.:
<pre>
class_builder&lt;your_class&gt; py_your_class(your_module, "your_class");
py_your_class.dict_defines_state();
</pre>
It is also possible to override the safety guard at the Python level.
E.g.:
<pre>
import your_bpl_module
class your_class(your_bpl_module.your_class):
__dict_defines_state__ = 1
</pre>
<p>
<dt>
<strong>Pitfall 2:</strong>
<tt>__getstate__</tt> is defined and the instance's <tt>__dict__</tt> is not empty.
<dd>
The author of a Boost.Python extension class might provide a
<tt>__getstate__</tt> method without considering the possibilities
that:
<p>
<ul>
<li>
his class is used in Python as a base class. Most likely the
<tt>__dict__</tt> of instances of the derived class needs to be
pickled in order to restore the instances correctly.
<p>
<li>
the user adds items to the instance's <tt>__dict__</tt> directly.
Again, the <tt>__dict__</tt> of the instance then needs to be
pickled.
</ul>
<p>
To alert the user to this highly unobvious problem, a safety guard is
provided. If <tt>__getstate__</tt> is defined and the instance's
<tt>__dict__</tt> is not empty, Boost.Python tests if the class has
an attribute <tt>__getstate_manages_dict__</tt>. An exception is
raised if this attribute is not defined:
<pre>
RuntimeError: Incomplete pickle support (__getstate_manages_dict__ not set)
</pre>
To resolve this problem, it should first be established that the
<tt>__getstate__</tt> and <tt>__setstate__</tt> methods manage the
instances's <tt>__dict__</tt> correctly. Note that this can be done
both at the C++ and the Python level. Finally, the safety guard
should intentionally be overridden. E.g. in C++:
<pre>
class_builder&lt;your_class&gt; py_your_class(your_module, "your_class");
py_your_class.getstate_manages_dict();
</pre>
In Python:
<pre>
import your_bpl_module
class your_class(your_bpl_module.your_class):
__getstate_manages_dict__ = 1
def __getstate__(self):
# your code here
def __setstate__(self, state):
# your code here
</pre>
</dl>
<hr>
<h2>Practical Advice</h2>
<ul>
<li>
Avoid using <tt>__getstate__</tt> if the instance can also be
reconstructed by way of <tt>__getinitargs__</tt>. This automatically
avoids Pitfall 2.
<p>
<li>
If <tt>__getstate__</tt> is required, include the instance's
<tt>__dict__</tt> in the Python object that is returned.
</ul>
<hr>
<h2>Examples</h2>
There are three files in <tt>boost/libs/python/example</tt> that
show how so provide pickle support.
<h3><a href="../example/pickle1.cpp"><tt>pickle1.cpp</tt></a></h3>
The C++ class in this example can be fully restored by passing the
appropriate argument to the constructor. Therefore it is sufficient
to define the pickle interface method <tt>__getinitargs__</tt>.
<h3><a href="../example/pickle2.cpp"><tt>pickle2.cpp</tt></a></h3>
The C++ class in this example contains member data that cannot be
restored by any of the constructors. Therefore it is necessary to
provide the <tt>__getstate__</tt>/<tt>__setstate__</tt> pair of
pickle interface methods.
<p>
For simplicity, the <tt>__dict__</tt> is not included in the result
of <tt>__getstate__</tt>. This is not generally recommended, but a
valid approach if it is anticipated that the object's
<tt>__dict__</tt> will always be empty. Note that the safety guards
will catch the cases where this assumption is violated.
<h3><a href="../example/pickle3.cpp"><tt>pickle3.cpp</tt></a></h3>
This example is similar to <a
href="../example/pickle2.cpp"><tt>pickle2.cpp</tt></a>. However, the
object's <tt>__dict__</tt> is included in the result of
<tt>__getstate__</tt>. This requires more code but is unavoidable
if the object's <tt>__dict__</tt> is not always empty.
<hr>
&copy; Copyright Ralf W. Grosse-Kunstleve 2001. Permission to copy,
use, modify, sell and distribute this document is granted provided this
copyright notice appears in all copies. This document is provided "as
is" without express or implied warranty, and with no claim as to its
suitability for any purpose.
<p>
Updated: March 21, 2001
</div>

View File

@@ -13,7 +13,7 @@
<p>
In general, raw pointers passed to or returned from functions are problematic
for py_cpp because pointers have too many potential meanings. Is it an iterator?
for Boost.Python because pointers have too many potential meanings. Is it an iterator?
A pointer to a single element? An array? When used as a return value, is the
caller expected to manage (delete) the pointed-to object or is the pointer
really just a reference? If the latter, what happens to Python references to the
@@ -34,12 +34,10 @@ converted from/to Python strings.
<h3>Can you avoid the problem?</h3>
<p>My first piece of advice to anyone with a case not covered above is
&ldquo;find a way to avoid the problem.&rdquo; For example, if you have just one
or two functions returning a pointer to a single (not an array of) <code>const
T*</code> for some wrapped <code>T</code>, you may be able to write a &ldquo;thin
converting wrapper&rdquo; over those two functions as follows (Since py_cpp
converts <code>const T&</code> values <code>to_python</code> by copying the T
into a new extension instance, Foo must have a public copy constructor):
``find a way to avoid the problem.'' For example, if you have just one
or two functions that return a pointer to an individual <code>const
T</code>, and <code>T</code> is a wrapped class, you may be able to write a ``thin
converting wrapper'' over those two functions as follows:
<blockquote><pre>
const Foo* f(); // original function
@@ -47,6 +45,10 @@ const Foo& f_wrapper() { return *f(); }
...
my_module.def(f_wrapper, "f");
</pre></blockquote>
<p>
Foo must have a public copy constructor for this technique to work, since Boost.Python
converts <code>const T&</code> values <code>to_python</code> by copying the <code>T</code>
value into a new extension instance.
<h2>Dealing with the problem</h2>
@@ -83,12 +85,12 @@ code before the last Python reference to it disappears:
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE // this is a gcc 2.95.2 bug workaround
PyObject* to_python(Foo* p)
{
return boost::python::PyExtensionClassConverters<Foo>::ptr_to_python(p);
return boost::python::python_extension_class_converters&ltFoo&gt::ptr_to_python(p);
}
PyObject* to_python(const Foo* p)
{
return to_python(const_cast<Foo*>(p));
return to_python(const_cast&lt;Foo*&gt;(p));
}
BOOST_PYTHON_END_CONVERSION_NAMESPACE
</pre></blockquote>
@@ -118,7 +120,7 @@ return value. You can handle this case by returning a Python tuple:
typedef unsigned ErrorCode;
const char* f(int* in_out_x); // original function
...
#include <boost/python/objects.hpp>
#include &lt;boost/python/objects.hpp&gt;
const boost::python::tuple f_wrapper(int in_x) {
const char* s = f(in_x);
return boost::python::tuple(s, in_x);
@@ -131,8 +133,9 @@ my_module.def(f_wrapper, "f");
&gt;&gt;&gt; str,out_x = f(3)
</pre></blockquote>
<p>
Previous: <a href="enums.html">Enums</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright

View File

@@ -1,11 +1,10 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<title>
Special Method and Operator Support
</title>
<div>
<h1>
<img width="277" height="86" id="_x0000_i1025" align="center" src=
<img width="277" height="86" id="_x0000_i1025" align="middle" src=
"../../../c++boost.gif" alt="c++boost.gif (8819 bytes)">Special Method and
Operator Support
</h1>
@@ -13,8 +12,8 @@
Overview
</h2>
<p>
Py_cpp supports all of the standard <a href=
"http://www.pythonlabs.com/pub/www.python.org/doc/current/ref/specialnames.html">
Boost.Python supports all of the standard <a href=
"http://www.python.org/doc/current/ref/specialnames.html">
special method names</a> supported by real Python class instances <em>
except</em> <code>__complex__</code> (more on the reasons <a href=
"#reasons">below</a>). In addition, it can quickly and easily expose
@@ -34,19 +33,24 @@
Python provides a number of special operators for basic customization of a
class. Only a brief description is provided below; more complete
documentation can be found <a
href="http://www.pythonlabs.com/pub/www.python.org/doc/current/ref/customization.html">here</a>.
href="http://www.python.org/doc/current/ref/customization.html">here</a>.
<dl>
<dt>
<b><tt class='method'>__init__</tt></b>(<i>self</i>)
<dd>
Initialize the class instance. For extension classes not subclassed in
Python, this is provided by the
<code>boost::python::constructor<...>()</code> construct and should <i>not</i> be explicitly <code>def</code>ed.
Python, <code> __init__</code> is defined by
<pre> my_class.def(boost::python::constructor<...>())</pre>
(see section <a href="example1.html">"A Simple Example Using Boost.Python"</a>).<p>
<dt>
<b><tt class='method'>__del__</tt></b>(<i>self</i>)
<dd>
Called when the extension instance is about to be destroyed.
Called when the extension instance is about to be destroyed. For extension classes
not subclassed in Python, <code> __del__</code> is always defined automatically by
means of the class' destructor.
<dt>
<b><tt class='method'>__repr__</tt></b>(<i>self</i>)
<dd>
@@ -78,7 +82,7 @@
<dt>
<b><tt class='method'>__call__</tt></b> (<var>self</var><big>[</big><var>, args...</var><big>]</big>)
<dd>
Called when the instance is &ldquo;called&rdquo; as a function; if this method
Called when the instance is ``called'' as a function; if this method
is defined, <code><var>x</var>(arg1, arg2, ...)</code> is a shorthand for
<code><var>x</var>.__call__(arg1, arg2, ...)</code>.
</dl>
@@ -100,7 +104,7 @@ std::string to_string(Foo const&amp; f)
boost::python::class_builder&lt;Foo&gt; foo_class(my_module, "Foo");
foo_class.def(&amp;to_string, "__str__");
</pre></blockquote>
Note that py_cpp also supports <em>automatic wrapping</em> of
Note that Boost.Python also supports <em>automatic wrapping</em> of
<code>__str__</code> and <code>__cmp__</code>. This is explained in the <a
href="#numeric">next section</a> and the <a href="#numeric_table">Table of
Automatically Wrapped Methods</a>.
@@ -110,10 +114,10 @@ foo_class.def(&amp;to_string, "__str__");
<p>
Numeric operators can be exposed manually, by <code>def</code>ing C++
[member] functions that support the standard Python <a
href="http://www.pythonlabs.com/pub/www.python.org/doc/current/ref/numeric-types.html">numeric
protocols</a>. This is the basic same technique used to expose
href="http://www.python.org/doc/current/ref/numeric-types.html">numeric
protocols</a>. This is the same basic technique used to expose
<code>to_string()</code> as <code>__str__()</code> above, and is <a
href="#numeric_manual">covered in detail below</a>. Py_cpp also supports
href="#numeric_manual">covered in detail below</a>. Boost.Python also supports
<i>automatic wrapping</i> of numeric operators whenever they have already
been defined in C++.
@@ -121,7 +125,7 @@ foo_class.def(&amp;to_string, "__str__");
<p>
Supose we wanted to expose a C++ class
<code>BigNum</code> which supports addition, so that we can write (in C++):
<code>BigNum</code> which supports addition. That is, in C++ we can write:
<blockquote><pre>
BigNum a, b, c;
...
@@ -143,7 +147,7 @@ bignum_class.def(boost::python::operators&lt;boost::python::op_add&gt;());
Since BigNum also supports subtraction, multiplication, and division, we
want to export those also. This can be done in a single command by
&ldquo;or&rdquo;ing the operator identifiers together (a complete list of these
``or''ing the operator identifiers together (a complete list of these
identifiers and the corresponding operators can be found in the <a href=
"#numeric_table">Table of Automatically Wrapped Methods</a>):
<blockquote><pre>
@@ -170,7 +174,7 @@ a = i + b;
bignum_class.def(boost::python::operators&lt;boost::python::op_add&gt;(), boost::python::right_operand&lt;int&gt;());
bignum_class.def(boost::python::operators&lt;boost::python::op_add&gt;(), boost::python::left_operand&lt;int&gt;());
</pre></blockquote>
Py_cpp uses overloading to register several variants of the same
Boost.Python uses overloading to register several variants of the same
operation (more on this in the context of <a href="#coercion">
coercion</a>). Again, several operators can be exported at once:
<blockquote><pre>
@@ -181,7 +185,7 @@ bignum_class.def(boost::python::operators&lt;(boost::python::op_sub | boost::pyt
</pre></blockquote>
The type of the operand not mentioned is taken from the class being wrapped. In
our example, the class object is <code>bignum_class</code>, and thus the
other operand's type is &ldquo;<code>BigNum const&amp;</code>&rdquo;. You can override
other operand's type is ``<code>BigNum const&amp;</code>''. You can override
this default by explicitly specifying a type in the <code>
operators</code> template:
<blockquote><pre>
@@ -189,15 +193,18 @@ bignum_class.def(boost::python::operators&lt;boost::python::op_add, BigNum&gt;()
</pre></blockquote>
<p>
Note that automatic wrapping uses the <em>expression</em>
&ldquo;<code>left + right</code>&rdquo; and can be used uniformly
``<code>left + right</code>'' and can be used uniformly
regardless of whether the C++ operators are supplied as free functions
<blockquote><pre>
<blockquote><pre>
BigNum operator+(BigNum, BigNum)
</pre></blockquote>
or as member
functions <blockquote><pre>
or as member functions
<blockquote><pre>
BigNum::operator+(BigNum).
</blockquote></pre>
</pre></blockquote>
<p>
For the Python built-in functions <code>pow()</code> and
@@ -218,8 +225,7 @@ namespace boost { namespace python {
<p>
In some cases, automatic wrapping of operators may be impossible or
undesirable. Suppose, for example, that the modulo operation for BigNums
is defined by a set of functions <code>mod()</code> (for automatic
wrapping, we would need <code>operator%()</code>):
is defined by a set of functions called <code>mod()</code>:
<blockquote><pre>
BigNum mod(BigNum const&amp; left, BigNum const&amp; right);
@@ -228,8 +234,9 @@ BigNum mod(int left, BigNum const&amp; right);
</pre></blockquote>
<p>
In order to create the Python operator "__mod__" from these functions, we
have to wrap them manually:
For automatic wrapping of the modulo function, <code>operator%()</code> would be needed.
Therefore, the <code>mod()</code>-functions must be wrapped manually. That is, we have
to export them explicitly with the Python special name "__mod__":
<blockquote><pre>
bignum_class.def((BigNum (*)(BigNum const&amp;, BigNum const&amp;))&amp;mod, "__mod__");
@@ -237,8 +244,8 @@ bignum_class.def((BigNum (*)(BigNum const&amp;, int))&amp;mod, "__mod__");
</pre></blockquote>
<p>
The third form (with <code>int</code> as left operand) cannot be wrapped
this way. We must first create a function <code>rmod()</code> with the
The third form of <code>mod()</code> (with <code>int</code> as left operand) cannot
be wrapped directly. We must first create a function <code>rmod()</code> with the
operands reversed:
<blockquote><pre>
@@ -248,7 +255,7 @@ BigNum rmod(BigNum const&amp; right, int left)
}
</pre></blockquote>
This function must be wrapped under the name "__rmod__":
This function must be wrapped under the name "__rmod__" (standing for "reverse mod"):
<blockquote><pre>
bignum_class.def(&amp;rmod, "__rmod__");
@@ -261,9 +268,9 @@ bignum_class.def(&amp;rmod, "__rmod__");
<p>
Automatic and manual wrapping can be mixed arbitrarily. Note that you
cannot overload the same operator for a given extension class on both
&ldquo;<code>int</code>&rdquo; and &ldquo;<code>float</code>&rdquo;, because Python implicitly
``<code>int</code>'' and ``<code>float</code>'', because Python implicitly
converts these types into each other. Thus, the overloaded variant
found first (be it &ldquo;<code>int</code>&ldquo; or &ldquo;<code>float</code>&rdquo;) will be
found first (be it ``<code>int</code>`` or ``<code>float</code>'') will be
used for either of the two types.
<h3><a name="coercion">Coercion</a></h3>
@@ -271,18 +278,18 @@ bignum_class.def(&amp;rmod, "__rmod__");
Plain Python can only execute operators with identical types on the left
and right hand side. If it encounters an expression where the types of
the left and right operand differ, it tries to coerce these type to a
the left and right operand differ, it tries to coerce these types to a
common type before invoking the actual operator. Implementing good
coercion functions can be difficult if many type combinations must be
supported.
<p>
Py_cpp solves this problem the same way that C++ does: with <em><a
Boost.Python solves this problem the same way that C++ does: with <em><a
href="overloading.html">overloading</a></em>. This technique drastically
simplifies the code neccessary to support operators: you just register
operators for all desired type combinations, and py_cpp automatically
operators for all desired type combinations, and Boost.Python automatically
ensures that the correct function is called in each case; there is no
need for user-defined coercion functions. To enable operator
overloading, py_cpp provides a standard coercion which is <em>implicitly
overloading, Boost.Python provides a standard coercion which is <em>implicitly
registered</em> whenever automatic operator wrapping is used.
<p>
If you wrap all operator functions manually, but still want to use
@@ -295,7 +302,7 @@ bignum_class.def_standard_coerce();
</pre></blockquote>
If you encounter a situation where you absolutely need a customized
coercion, you can overload the "__coerce__" operator itself. The signature
coercion, you can still define the "__coerce__" operator manually. The signature
of a coercion function should look like one of the following (the first is
the safest):
@@ -310,13 +317,22 @@ PyObject* custom_coerce(PyObject* left, PyObject* right);
converted to the same type. Such a function is wrapped as usual:
<blockquote><pre>
// this must be called before any use of automatic operator
// wrapping or a call to some_class.def_standard_coerce()
some_class.def(&amp;custom_coerce, "__coerce__");
</pre></blockquote>
Note that the later use of automatic operator wrapping on a
<code>class_builder</code> or a call to
&ldquo;<code>some_class.def_standard_coerce()</code>&rdquo; will cause any
custom coercion function to be replaced by the standard one.
Note that the standard coercion (defined by use of automatic
operator wrapping on a <code>class_builder</code> or a call to
<code>class_builder::def_standard_coerce()</code>) will never be applied if
a custom coercion function has been registered. Therefore, in
your coercion function you should call
<blockquote><pre>
boost::python::standard_coerce(left, right);
</pre></blockquote>
for all cases that you don't want to handle yourself.
<h3><a name="ternary_pow">The Ternary <code>pow()</code> Operator</a></h3>
@@ -330,7 +346,7 @@ some_class.def(&amp;custom_coerce, "__coerce__");
this is done as usual:
<blockquote><pre>
BigNum power(BigNum const&amp; first, BigNum const&amp; second, BigNum const&amp; module);
BigNum power(BigNum const&amp; first, BigNum const&amp; second, BigNum const&amp; modulus);
typedef BigNum (ternary_function1)(const BigNum&amp;, const BigNum&amp;, const BigNum&amp;);
...
bignum_class.def((ternary_function1)&amp;power, "__pow__");
@@ -353,19 +369,19 @@ bignum_class.def((ternary_function2)&amp;power, "__pow__");
</pre></blockquote>
In the second variant, however, <code>BigNum</code> appears only as second
argument, and in the last one it is the third argument. These functions
must be presented to py_cpp such that that the <code>BigNum</code>
argument, and in the last one it's the third argument. These functions
must be presented to Boost.Python such that that the <code>BigNum</code>
argument appears in first position:
<blockquote><pre>
BigNum rpower(BigNum const&amp; second, int first, int modulus)
{
return power(first, second, third);
return power(first, second, modulus);
}
BigNum rrpower(BigNum const&amp; third, int first, int second)
BigNum rrpower(BigNum const&amp; modulus, int first, int second)
{
return power(first, second, third);
return power(first, second, modulus);
}
</pre></blockquote>
@@ -381,8 +397,8 @@ Note that "__rrpow__" is an extension not present in plain Python.
<h2><a name="numeric_table">Table of Automatically Wrapped Methods</a></h2>
<p>
Py_cpp can automatically wrap the following <a href=
"http://www.pythonlabs.com/pub/www.python.org/doc/current/ref/specialnames.html">
Boost.Python can automatically wrap the following <a href=
"http://www.python.org/doc/current/ref/specialnames.html">
special methods</a>:
<p>
@@ -630,15 +646,16 @@ Note that "__rrpow__" is an extension not present in plain Python.
to Python's iteration and access protocols. These protocols differ
considerably from the ones found in C++. For example, Python's typical
iteration idiom looks like
<blockquote><pre>
for i in S:
</blockquote></pre>
</pre></blockquote>
while in C++ one writes
while in C++ one writes
<blockquote><pre>
for (iterator i = S.begin(), end = S.end(); i != end)
</blockquote></pre>
for (iterator i = S.begin(), end = S.end(); i != end; ++i)
</pre></blockquote>
<p>One could try to wrap C++ iterators in order to carry the C++ idiom into
Python. However, this does not work very well because
@@ -655,12 +672,12 @@ for (iterator i = S.begin(), end = S.end(); i != end)
<p>
It is a better idea to support the standard <a
href="http://www.pythonlabs.com/pub/www.python.org/doc/current/ref/sequence-types.html">Python
href="http://www.python.org/doc/current/ref/sequence-types.html">Python
sequence and mapping protocols</a> for your wrapped containers. These
operators have to be wrapped manually because there are no corresponding
C++ operators that could be used for automatic wrapping. The Python
documentation lists the relevant <a href=
"http://www.pythonlabs.com/pub/www.python.org/doc/current/ref/sequence-types.html">
"http://www.python.org/doc/current/ref/sequence-types.html">
container operators</a>. In particular, expose __getitem__, __setitem__
and remember to raise the appropriate Python exceptions
(<code>PyExc_IndexError</code> for sequences,
@@ -689,7 +706,7 @@ void throw_key_error_if_end(
// Define some simple wrapper functions which match the Python protocol
// for __getitem__, __setitem__, and __delitem__. Just as in Python, a
// free function with a &ldquo;self&rdquo; first parameter makes a fine class method.
// free function with a ``self'' first parameter makes a fine class method.
const std::string&amp; get_item(const StringMap&amp; self, std::size_t key)
{
@@ -755,13 +772,13 @@ KeyError: 2
<h2><a name="getter_setter">Customized Attribute Access</a></h2>
<p>
Just like built-in Python classes, py_cpp extension classes support <a
href="http://www.pythonlabs.com/pub/www.python.org/doc/current/ref/attribute-access.html">special
Just like built-in Python classes, Boost.Python extension classes support <a
href="http://www.python.org/doc/current/ref/attribute-access.html">special
the usual attribute access methods</a> <code>__getattr__</code>,
<code>__setattr__</code>, and <code>__delattr__</code>.
Because writing these functions can
be tedious in the common case where the attributes being accessed are
known statically, py_cpp checks the special names
known statically, Boost.Python checks the special names
<ul>
<li>
@@ -774,10 +791,10 @@ KeyError: 2
to provide functional access to the attribute <em>&lt;name&gt;</em>. This
facility can be used from C++ or entirely from Python. For example, the
following shows how we can implement a &ldquo;computed attribute&rdquo; in Python:
following shows how we can implement a ``computed attribute'' in Python:
<blockquote>
<pre>
&gt;&gt;&gt; class Range(AnyPy_cppExtensionClass):
&gt;&gt;&gt; class Range(AnyBoost.PythonExtensionClass):
... def __init__(self, start, end):
... self.start = start
... self.end = end
@@ -793,7 +810,7 @@ KeyError: 2
Direct Access to Data Members
</h4>
<p>
Py_cpp uses the special <code>
Boost.Python uses the special <code>
__xxxattr__<em>&lt;name&gt;</em>__</code> functionality described above
to allow direct access to data members through the following special
functions on <code>class_builder&lt;&gt;</code> and <code>
@@ -873,14 +890,14 @@ if (PyInstance_Check(r)) { ...
</pre>
</blockquote>
<p>
Previous: <a href="inheritance.html">Inheritance</a> Next: <a href=
"under-the-hood.html">A Peek Under the Hood</a> Up: <a href=
"index.html">Top</a>
Next: <a href="under-the-hood.html">A Peek Under the Hood</a>
Previous: <a href="inheritance.html">Inheritance</a>
Up: <a href= "index.html">Top</a>
<p>
&copy; Copyright David Abrahams and Ullrich K&ouml;the 2000.
Permission to copy, use, modify, sell and distribute this document is
granted provided this copyright notice appears in all copies. This
document is provided &ldquo;as is&rdquo; without express or implied
document is provided ``as is'' without express or implied
warranty, and with no claim as to its suitability for any purpose.
<p>
Updated: Nov 26, 2000

View File

@@ -1,26 +0,0 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<title>
The Title Of This Page
</title>
<div>
<h1>
<img width="277" height="86" id="_x0000_i1025" align="center"
src="../../../c++boost.gif" alt= "c++boost.gif (8819 bytes)">The Title Of This
Page
</h1>
<p>
<p>
Prev: <a href="prev.html">Previous</a>
Next: <a href="next.html">Next</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,
sell and distribute this document is granted provided this copyright
notice appears in all copies. This document is provided "as is" without
express or implied warranty, and with no claim as to its suitability
for any purpose.
<p>
Updated: Nov 26, 2000
</div>

View File

@@ -22,7 +22,7 @@
"example1.html#add_world_class">add it to the module</a> it goes into the
module's dictionary to be looked up under the name "world".
<p>
Py_cpp uses C++'s template argument deduction mechanism to determine the
Boost.Python uses C++'s template argument deduction mechanism to determine the
types of arguments to functions (except constructors, for which we must
<a href="example1.html#Constructor_example">provide an argument list</a>
because they can't be named in C++). Then, it calls the appropriate
@@ -48,8 +48,8 @@
the top of your module's init function, then <code>def</code> the member
functions later to avoid problems with inter-class dependencies.
<p>
Previous: <a href="overriding.html">Function Overloading</a>
Next: <a href="building.html">Building a Module with Py_cpp</a>
Next: <a href="building.html">Building a Module with Boost.Python</a>
Previous: <a href="special.html">Special Method and Operator Support</a>
Up: <a href="index.html">Top</a>
<p>
&copy; Copyright David Abrahams 2000. Permission to copy, use, modify,

24
example/README Normal file
View File

@@ -0,0 +1,24 @@
To get started with the Boost Python Library, use the examples
getting_started1.cpp and getting_started2.cpp.
Examples for providing pickle support can be found in:
pickle1.cpp
pickle2.cpp
pickle3.cpp
See also: libs/python/doc/pickle.html
Other advanced concepts are introduced by:
abstract.cpp
simple_vector.cpp
do_it_yourself_converters.cpp
Examples for the cross-module support are provided by:
noncopyable_export.cpp
noncopyable_import.cpp
dvect.cpp
ivect.cpp
See also: libs/python/doc/cross_module.html
The files example1.cpp and rwgk1.cpp are obsolete. They are only
included because the Visual Studio project in the build directory still
refers to them.

32
example/abstract.cpp Normal file
View File

@@ -0,0 +1,32 @@
// Example by Ullrich Koethe
#include "boost/python/class_builder.hpp"
#include <string>
struct Abstract
{
virtual std::string test() = 0;
};
struct Abstract_callback: Abstract
{
Abstract_callback(PyObject * self)
: m_self(self)
{}
std::string test()
{
return boost::python::callback<std::string>::call_method(m_self, "test");
}
PyObject * m_self;
};
BOOST_PYTHON_MODULE_INIT(abstract)
{
boost::python::module_builder a("abstract");
boost::python::class_builder<Abstract, Abstract_callback>
a_class(a, "Abstract");
a_class.def(boost::python::constructor<>()); // wrap a constructor
a_class.def(&Abstract::test, "test");
}

View File

@@ -0,0 +1,128 @@
// Example by Ralf W. Grosse-Kunstleve
/*
This example shows how to convert a class from and to native
Python objects, such as tuples.
We do not want to expose the helper class MillerIndex as an
Extension Class. However, in order to simplify the wrapper code,
we want to define from_python() and to_python() functions for
class MillerIndex.
Consider the alternatives:
- Expose MillerIndex as an Extension Class.
We need a constructor MillerIndex(python::tuple).
Python function calls become more complex:
foo(MillerIndex((1,2,3)) instead of foo((1,2,3))
We need a method such as MillerIndex().as_tuple().
- Define a wrapper function for each function that we
want to expose, e.g.:
void add(const IndexingSet& ixset, const python::tuple PyMIx)
The first alternative introduces a new type that the user has to
deal with. Other modules using Miller indices might organize them in
different ways, for example to increase runtime efficiency for
important procedures. This means, the user has to know how to
convert between the different kinds of Miller index representations.
This can quickly become a nuisance. Relying on native Python data
structures minimizes the number of special types the user has to
learn and convert. Of course, this argument is only valid for
small and relatively simply classes.
If there are many member functions with MillerIndex arguments, the
second alternative is impractical, and concentrating the conversion
mechanism in one central place is essential for code
maintainability. An added benefit is that more convenient (smarter)
conversion functions can be provided without cluttering the rest of
the wrapper code.
*/
#include <string>
#include <vector>
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
namespace { // Avoid cluttering the global namespace.
// The helper class.
//
class MillerIndex {
public:
int v[3];
};
// The main class. Imagine that there are MANY member functions
// like add() and get().
//
class IndexingSet {
private:
std::vector<MillerIndex> VMIx;
public:
void add(const MillerIndex& MIx) { VMIx.push_back(MIx); }
MillerIndex get(std::size_t i) const { return VMIx[i]; }
};
}
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
// Convert a Python tuple to a MillerIndex object.
//
MillerIndex from_python(PyObject* p, python::type<const MillerIndex&>)
{
python::tuple tup
= python::tuple(python::ref(p, python::ref::increment_count));
if (tup.size() != 3) {
PyErr_SetString(PyExc_ValueError,
"expecting exactly 3 values in tuple.");
throw python::error_already_set();
}
MillerIndex result;
for (int i = 0; i < 3; i++)
result.v[i] = from_python(tup[i].get(), python::type<int>());
return result;
}
// Similar conversion for MillerIndex objects passed by value.
// Not actually used, but included to show the principle.
//
MillerIndex from_python(PyObject* p, python::type<MillerIndex>)
{
return from_python(p, python::type<const MillerIndex&>());
}
// Convert a MillerIndex object to a Python tuple.
//
PyObject* to_python(const MillerIndex& hkl)
{
python::tuple result(3);
for (int i = 0; i < 3; i++)
result.set_item(i, python::ref(to_python(hkl.v[i])));
return result.reference().release();
}
BOOST_PYTHON_END_CONVERSION_NAMESPACE
BOOST_PYTHON_MODULE_INIT(do_it_yourself_converters)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("do_it_yourself_converters");
// Create the Python type object for our extension class.
python::class_builder<IndexingSet> ixset_class(this_module, "IndexingSet");
// Add the __init__ function.
ixset_class.def(python::constructor<>());
// Add the member functions.
ixset_class.def(&IndexingSet::add, "add");
ixset_class.def(&IndexingSet::get, "get");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

45
example/dvect.cpp Normal file
View File

@@ -0,0 +1,45 @@
// Example by Ralf W. Grosse-Kunstleve
// See root/libs/python/doc/cross_module.html for an introduction.
#include "dvect.h"
#include "ivect.h"
#include <boost/python/cross_module.hpp>
namespace python = boost::python;
namespace {
# include "dvect_conversions.cpp"
# include "ivect_conversions.cpp"
vects::ivect dvect_as_ivect(const vects::dvect& dv)
{
vects::ivect iv(dv.size());
vects::ivect::iterator iviter = iv.begin();
for (int i = 0; i < dv.size(); i++) iviter[i] = static_cast<int>(dv[i]);
return iv;
}
}
BOOST_PYTHON_MODULE_INIT(dvect)
{
try
{
python::module_builder this_module("dvect");
python::class_builder<vects::dvect> dvect_class(this_module, "dvect");
python::export_converters(dvect_class);
python::import_converters<vects::ivect> ivect_converters("ivect", "ivect");
dvect_class.def(python::constructor<python::tuple>());
dvect_class.def(&vects::dvect::as_tuple, "as_tuple");
dvect_class.def(dvect_as_ivect, "as_ivect");
# include "dvect_defs.cpp"
# include "ivect_defs.cpp"
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

32
example/dvect.h Normal file
View File

@@ -0,0 +1,32 @@
#ifndef DVECT_H
#define DVECT_H
#include <vector>
#include <boost/python/class_builder.hpp>
namespace vects {
struct dvect : public std::vector<double>
{
dvect() : std::vector<double>() {}
dvect(size_t n) : std::vector<double>(n) {}
dvect(boost::python::tuple tuple) : std::vector<double>(tuple.size())
{
std::vector<double>::iterator v_it = begin();
for (int i = 0; i < tuple.size(); i++)
v_it[i] = BOOST_PYTHON_CONVERSION::from_python(tuple[i].get(),
boost::python::type<double>());
}
boost::python::tuple as_tuple() const
{
boost::python::tuple t(size());
for (int i = 0; i < size(); i++)
t.set_item(i,
boost::python::ref(BOOST_PYTHON_CONVERSION::to_python((*this)[i])));
return t;
}
};
}
#endif // DVECT_H

View File

@@ -0,0 +1,51 @@
// basics first: const reference converters
boost::python::tuple const_dvect_reference_as_tuple(const vects::dvect& dv)
{
return dv.as_tuple();
}
// to_python smart pointer conversions
std::auto_ptr<vects::dvect> dvect_as_auto_ptr(const vects::dvect& dv)
{
return std::auto_ptr<vects::dvect>(new vects::dvect(dv));
}
boost::shared_ptr<vects::dvect> dvect_as_shared_ptr(const vects::dvect& dv)
{
return boost::shared_ptr<vects::dvect>(new vects::dvect(dv));
}
// smart pointers passed by value
boost::python::ref auto_ptr_value_dvect_as_tuple(std::auto_ptr<vects::dvect> dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
boost::python::ref shared_ptr_value_dvect_as_tuple(boost::shared_ptr<vects::dvect> dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
// smart pointers passed by reference
boost::python::ref auto_ptr_reference_dvect_as_tuple(std::auto_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
boost::python::ref shared_ptr_reference_dvect_as_tuple(boost::shared_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
// smart pointers passed by const reference
boost::python::ref auto_ptr_const_reference_dvect_as_tuple(const std::auto_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
boost::python::ref shared_ptr_const_reference_dvect_as_tuple(const boost::shared_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}

13
example/dvect_defs.cpp Normal file
View File

@@ -0,0 +1,13 @@
this_module.def(dvect_as_auto_ptr, "dvect_as_auto_ptr");
this_module.def(dvect_as_shared_ptr, "dvect_as_shared_ptr");
this_module.def(const_dvect_reference_as_tuple, "const_dvect_reference_as_tuple");
this_module.def(auto_ptr_value_dvect_as_tuple, "auto_ptr_value_dvect_as_tuple");
this_module.def(shared_ptr_value_dvect_as_tuple, "shared_ptr_value_dvect_as_tuple");
this_module.def(auto_ptr_reference_dvect_as_tuple, "auto_ptr_reference_dvect_as_tuple");
this_module.def(shared_ptr_reference_dvect_as_tuple, "shared_ptr_reference_dvect_as_tuple");
this_module.def(auto_ptr_const_reference_dvect_as_tuple, "auto_ptr_const_reference_dvect_as_tuple");
this_module.def(shared_ptr_const_reference_dvect_as_tuple, "shared_ptr_const_reference_dvect_as_tuple");

View File

@@ -0,0 +1,32 @@
// Example by Ralf W. Grosse-Kunstleve
#include <string>
namespace { // Avoid cluttering the global namespace.
// A couple of simple C++ functions that we want to expose to Python.
std::string greet() { return "hello, world"; }
int square(int number) { return number * number; }
}
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
// Python requires an exported function called init<module-name> in every
// extension module. This is where we build the module contents.
BOOST_PYTHON_MODULE_INIT(getting_started1)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("getting_started1");
// Add regular functions to the module.
this_module.def(greet, "greet");
this_module.def(square, "square");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

View File

@@ -0,0 +1,52 @@
// Example by Ralf W. Grosse-Kunstleve
#include <iostream>
#include <string>
namespace { // Avoid cluttering the global namespace.
// A friendly class.
class hello
{
public:
hello(const std::string& country) { this->country = country; }
std::string greet() const { return "Hello from " + country; }
private:
std::string country;
};
// A function taking a hello object as an argument.
std::string invite(const hello& w) {
return w.greet() + "! Please come soon!";
}
}
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
BOOST_PYTHON_MODULE_INIT(getting_started2)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("getting_started2");
// Create the Python type object for our extension class.
python::class_builder<hello> hello_class(this_module, "hello");
// Add the __init__ function.
hello_class.def(python::constructor<std::string>());
// Add a regular member function.
hello_class.def(&hello::greet, "greet");
// Add invite() as a regular function to the module.
this_module.def(invite, "invite");
// Even better, invite() can also be made a member of hello_class!!!
hello_class.def(invite, "invite");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

45
example/ivect.cpp Normal file
View File

@@ -0,0 +1,45 @@
// Example by Ralf W. Grosse-Kunstleve
// See root/libs/python/doc/cross_module.html for an introduction.
#include "dvect.h"
#include "ivect.h"
#include <boost/python/cross_module.hpp>
namespace python = boost::python;
namespace {
# include "dvect_conversions.cpp"
# include "ivect_conversions.cpp"
vects::dvect ivect_as_dvect(const vects::ivect& iv)
{
vects::dvect dv(iv.size());
vects::dvect::iterator dviter = dv.begin();
for (int i = 0; i < iv.size(); i++) dviter[i] = static_cast<double>(iv[i]);
return dv;
}
}
BOOST_PYTHON_MODULE_INIT(ivect)
{
try
{
python::module_builder this_module("ivect");
python::class_builder<vects::ivect> ivect_class(this_module, "ivect");
python::export_converters(ivect_class);
python::import_converters<vects::dvect> dvect_converters("dvect", "dvect");
ivect_class.def(python::constructor<python::tuple>());
ivect_class.def(&vects::ivect::as_tuple, "as_tuple");
ivect_class.def(ivect_as_dvect, "as_dvect");
# include "dvect_defs.cpp"
# include "ivect_defs.cpp"
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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#ifndef IVECT_H
#define IVECT_H
#include <vector>
#include <boost/python/class_builder.hpp>
namespace vects {
struct ivect : public std::vector<int>
{
ivect() : std::vector<int>() {}
ivect(size_t n) : std::vector<int>(n) {}
ivect(boost::python::tuple tuple) : std::vector<int>(tuple.size())
{
std::vector<int>::iterator v_it = begin();
for (int i = 0; i < tuple.size(); i++)
v_it[i] = BOOST_PYTHON_CONVERSION::from_python(tuple[i].get(),
boost::python::type<int>());
}
boost::python::tuple as_tuple() const
{
boost::python::tuple t(size());
for (int i = 0; i < size(); i++)
t.set_item(i,
boost::python::ref(BOOST_PYTHON_CONVERSION::to_python((*this)[i])));
return t;
}
};
}
#endif // IVECT_H

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// basics first: const reference converters
boost::python::tuple const_ivect_reference_as_tuple(const vects::ivect& iv)
{
return iv.as_tuple();
}
// to_python smart pointer conversions
std::auto_ptr<vects::ivect> ivect_as_auto_ptr(const vects::ivect& iv)
{
return std::auto_ptr<vects::ivect>(new vects::ivect(iv));
}
boost::shared_ptr<vects::ivect> ivect_as_shared_ptr(const vects::ivect& iv)
{
return boost::shared_ptr<vects::ivect>(new vects::ivect(iv));
}
// smart pointers passed by value
boost::python::ref auto_ptr_value_ivect_as_tuple(std::auto_ptr<vects::ivect> iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
boost::python::ref shared_ptr_value_ivect_as_tuple(boost::shared_ptr<vects::ivect> iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
// smart pointers passed by reference
boost::python::ref auto_ptr_reference_ivect_as_tuple(std::auto_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
boost::python::ref shared_ptr_reference_ivect_as_tuple(boost::shared_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
// smart pointers passed by const reference
boost::python::ref auto_ptr_const_reference_ivect_as_tuple(const std::auto_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
boost::python::ref shared_ptr_const_reference_ivect_as_tuple(const boost::shared_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}

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this_module.def(ivect_as_auto_ptr, "ivect_as_auto_ptr");
this_module.def(ivect_as_shared_ptr, "ivect_as_shared_ptr");
this_module.def(const_ivect_reference_as_tuple, "const_ivect_reference_as_tuple");
this_module.def(auto_ptr_value_ivect_as_tuple, "auto_ptr_value_ivect_as_tuple");
this_module.def(shared_ptr_value_ivect_as_tuple, "shared_ptr_value_ivect_as_tuple");
this_module.def(auto_ptr_reference_ivect_as_tuple, "auto_ptr_reference_ivect_as_tuple");
this_module.def(shared_ptr_reference_ivect_as_tuple, "shared_ptr_reference_ivect_as_tuple");
this_module.def(auto_ptr_const_reference_ivect_as_tuple, "auto_ptr_const_reference_ivect_as_tuple");
this_module.def(shared_ptr_const_reference_ivect_as_tuple, "shared_ptr_const_reference_ivect_as_tuple");

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#ifndef NONCOPYABLE_H
#define NONCOPYABLE_H
class store
{
private:
store(const store&) { } // Disable the copy constructor.
int number;
public:
store(const int i) : number(i) { }
int recall() const { return number; }
};
#endif // NONCOPYABLE_H

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// Example by Ralf W. Grosse-Kunstleve
// See root/libs/python/doc/cross_module.html for an introduction.
#include <boost/python/cross_module.hpp>
namespace python = boost::python;
#include "noncopyable.h"
BOOST_PYTHON_MODULE_INIT(noncopyable_export)
{
try
{
python::module_builder this_module("noncopyable_export");
python::class_builder<store> store_class(this_module, "store");
python::export_converters_noncopyable(store_class);
store_class.def(python::constructor<int>());
store_class.def(&store::recall, "recall");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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// Example by Ralf W. Grosse-Kunstleve
// See root/libs/python/doc/cross_module.html for an introduction.
#include <boost/python/cross_module.hpp>
namespace python = boost::python;
#include "noncopyable.h"
namespace { // Avoid cluttering the global namespace.
// A function with store objects as both input and output parameters.
// Because the copy constructor is disabled, we cannot pass a store
// object by value. Instead, we pass a smart pointer.
std::auto_ptr<store> add_stores(const store& s1, const store& s2)
{
int sum = s1.recall() + s2.recall();
std::auto_ptr<store> ss = std::auto_ptr<store>(new store(sum));
return ss;
}
}
BOOST_PYTHON_MODULE_INIT(noncopyable_import)
{
try
{
python::module_builder this_module("noncopyable_import");
python::import_converters<store>
dvect_converters("noncopyable_export", "store");
// Imagine all the additional classes with member functions
// that have store objects as input and output parameters.
// Lots and lots of them.
// However, to keep this example simple, we only define a
// module-level function.
this_module.def(add_stores, "add_stores");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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// Example by Ralf W. Grosse-Kunstleve
/*
This example shows how to make an Extension Class "pickleable".
The world class below can be fully restored by passing the
appropriate argument to the constructor. Therefore it is sufficient
to define the pickle interface method __getinitargs__.
For more information refer to boost/libs/python/doc/pickle.html.
*/
#include <string>
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
namespace { // Avoid cluttering the global namespace.
// A friendly class.
class world
{
private:
std::string country;
int secret_number;
public:
world(const std::string& country) : secret_number(0) {
this->country = country;
}
std::string greet() const { return "Hello from " + country + "!"; }
std::string get_country() const { return country; }
};
// Support for pickle.
python::ref world_getinitargs(const world& w) {
python::tuple result(1);
result.set_item(0, w.get_country());
return result.reference();
}
}
BOOST_PYTHON_MODULE_INIT(pickle1)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("pickle1");
// Create the Python type object for our extension class.
python::class_builder<world> world_class(this_module, "world");
// Add the __init__ function.
world_class.def(python::constructor<std::string>());
// Add a regular member function.
world_class.def(&world::greet, "greet");
// Support for pickle.
world_class.def(world_getinitargs, "__getinitargs__");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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// Example by Ralf W. Grosse-Kunstleve
/*
This example shows how to make an Extension Class "pickleable".
The world class below contains member data (secret_number) that
cannot be restored by any of the constructors. Therefore it is
necessary to provide the __getstate__/__setstate__ pair of pickle
interface methods.
For simplicity, the __dict__ is not included in the result of
__getstate__. This is not generally recommended, but a valid
approach if it is anticipated that the object's __dict__ will
always be empty. Note that safety guard are provided to catch the
cases where this assumption is not true.
pickle3.cpp shows how to include the object's __dict__ in the
result of __getstate__.
For more information refer to boost/libs/python/doc/pickle.html.
*/
#include <string>
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
namespace { // Avoid cluttering the global namespace.
// A friendly class.
class world
{
public:
world(const std::string& country) : secret_number(0) {
this->country = country;
}
std::string greet() const { return "Hello from " + country + "!"; }
std::string get_country() const { return country; }
void set_secret_number(int number) { secret_number = number; }
int get_secret_number() const { return secret_number; }
private:
std::string country;
int secret_number;
};
// Support for pickle.
using BOOST_PYTHON_CONVERSION::from_python;
python::ref world_getinitargs(const world& w) {
python::tuple result(1);
result.set_item(0, w.get_country());
return result.reference(); // returning the reference avoids the copying.
}
python::ref world_getstate(const world& w) {
python::tuple result(1);
result.set_item(0, w.get_secret_number());
return result.reference(); // returning the reference avoids the copying.
}
void world_setstate(world& w, python::tuple state) {
if (state.size() != 1) {
PyErr_SetString(PyExc_ValueError,
"Unexpected argument in call to __setstate__.");
throw python::error_already_set();
}
int number = from_python(state[0].get(), python::type<int>());
if (number != 42)
w.set_secret_number(number);
}
}
BOOST_PYTHON_MODULE_INIT(pickle2)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("pickle2");
// Create the Python type object for our extension class.
python::class_builder<world> world_class(this_module, "world");
// Add the __init__ function.
world_class.def(python::constructor<std::string>());
// Add a regular member function.
world_class.def(&world::greet, "greet");
world_class.def(&world::get_secret_number, "get_secret_number");
world_class.def(&world::set_secret_number, "set_secret_number");
// Support for pickle.
world_class.def(world_getinitargs, "__getinitargs__");
world_class.def(world_getstate, "__getstate__");
world_class.def(world_setstate, "__setstate__");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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// Example by Ralf W. Grosse-Kunstleve
/*
This example shows how to make an Extension Class "pickleable".
The world class below contains member data (secret_number) that
cannot be restored by any of the constructors. Therefore it is
necessary to provide the __getstate__/__setstate__ pair of pickle
interface methods.
The object's __dict__ is included in the result of __getstate__.
This requires more code (compare with pickle2.cpp), but is
unavoidable if the object's __dict__ is not always empty.
For more information refer to boost/libs/python/doc/pickle.html.
*/
#include <string>
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
namespace boost { namespace python {
ref getattr(PyObject* o, const std::string& attr_name) {
return ref(PyObject_GetAttrString(o, const_cast<char*>(attr_name.c_str())));
}
ref getattr(const ref& r, const std::string& attr_name) {
return getattr(r.get(), attr_name);
}
}}
namespace { // Avoid cluttering the global namespace.
// A friendly class.
class world
{
public:
world(const std::string& country) : secret_number(0) {
this->country = country;
}
std::string greet() const { return "Hello from " + country + "!"; }
std::string get_country() const { return country; }
void set_secret_number(int number) { secret_number = number; }
int get_secret_number() const { return secret_number; }
private:
std::string country;
int secret_number;
};
// Support for pickle.
python::ref world_getinitargs(const world& w) {
python::tuple result(1);
result.set_item(0, w.get_country());
return result.reference(); // returning the reference avoids the copying.
}
python::ref world_getstate(python::tuple const & args,
python::dictionary const & keywords);
PyObject* world_setstate(python::tuple const & args,
python::dictionary const & keywords);
}
BOOST_PYTHON_MODULE_INIT(pickle3)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("pickle3");
// Create the Python type object for our extension class.
python::class_builder<world> world_class(this_module, "world");
// Add the __init__ function.
world_class.def(python::constructor<std::string>());
// Add a regular member function.
world_class.def(&world::greet, "greet");
world_class.def(&world::get_secret_number, "get_secret_number");
world_class.def(&world::set_secret_number, "set_secret_number");
// Support for pickle.
world_class.def(world_getinitargs, "__getinitargs__");
world_class.def_raw(world_getstate, "__getstate__");
world_class.def_raw(world_setstate, "__setstate__");
world_class.getstate_manages_dict();
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}
namespace {
using BOOST_PYTHON_CONVERSION::from_python;
using boost::python::type;
using boost::python::ref;
using boost::python::tuple;
using boost::python::list;
using boost::python::dictionary;
using boost::python::getattr;
ref world_getstate(tuple const & args, dictionary const & keywords)
{
if(args.size() != 1 || keywords.size() != 0) {
PyErr_SetString(PyExc_TypeError, "wrong number of arguments");
throw boost::python::argument_error();
}
const world& w = from_python(args[0].get(), type<const world&>());
ref mydict = getattr(args[0], "__dict__");
tuple result(2);
// store the object's __dict__
result.set_item(0, mydict);
// store the internal state of the C++ object
result.set_item(1, w.get_secret_number());
return result.reference(); // returning the reference avoids the copying.
}
PyObject* world_setstate(tuple const & args, dictionary const & keywords)
{
if(args.size() != 2 || keywords.size() != 0) {
PyErr_SetString(PyExc_TypeError, "wrong number of arguments");
throw boost::python::argument_error();
}
world& w = from_python(args[0].get(), type<world&>());
ref mydict = getattr(args[0], "__dict__");
tuple state = from_python(args[1].get(), type<tuple>());
if (state.size() != 2) {
PyErr_SetString(PyExc_ValueError,
"Unexpected argument in call to __setstate__.");
throw python::error_already_set();
}
// restore the object's __dict__
dictionary odict = from_python(mydict.get(), type<dictionary>());
const dictionary& pdict = from_python(state[0].get(), type<const dictionary&>());
list pkeys(pdict.keys());
for (int i = 0; i < pkeys.size(); i++) {
ref k(pkeys[i]);
//odict[k] = pdict[k]; // XXX memory leak!
odict[k] = pdict.get_item(k); // this does not leak.
}
// restore the internal state of the C++ object
int number = from_python(state[1].get(), type<int>());
if (number != 42)
w.set_secret_number(number);
return python::detail::none();
}
}

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#include <string>
namespace { // Avoid cluttering the global namespace.
// A couple of simple C++ functions that we want to expose to Python.
std::string greet() { return "hello, world"; }
int square(int number) { return number * number; }
}
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
// Python requires an exported function called init<module-name> in every
// extension module. This is where we build the module contents.
extern "C"
#ifdef _WIN32
__declspec(dllexport)
#endif
void initrwgk1()
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("rwgk1");
// Add regular functions to the module.
this_module.def(greet, "greet");
this_module.def(square, "square");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}
// Win32 DLL boilerplate
#if defined(_WIN32)
#include <windows.h>
extern "C" BOOL WINAPI DllMain(HINSTANCE, DWORD, LPVOID) { return 1; }
#endif // _WIN32

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// Example by Ralf W. Grosse-Kunstleve
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
namespace { // Avoid cluttering the global namespace.
// A wrapper is used to define additional constructors.
//
struct vector_double_wrapper: std::vector<double>
{
// Tell the compiler how to convert a base class object to
// this wrapper object.
vector_double_wrapper(PyObject*, const std::vector<double>& vd)
: std::vector<double>(vd) {}
vector_double_wrapper(PyObject* self)
: std::vector<double>() {}
vector_double_wrapper(PyObject* self, int n)
: std::vector<double>(n) {}
vector_double_wrapper(PyObject* self, python::tuple tuple)
: std::vector<double>(tuple.size())
{
std::vector<double>::iterator vd = begin();
for (int i = 0; i < tuple.size(); i++)
vd[i] = BOOST_PYTHON_CONVERSION::from_python(tuple[i].get(),
python::type<double>());
}
};
void raise_vector_IndexError() {
PyErr_SetString(PyExc_IndexError, "vector index out of range");
throw python::error_already_set();
}
double getitem(const std::vector<double>& vd, std::size_t key) {
if (key >= vd.size()) raise_vector_IndexError();
return vd[key];
}
void setitem(std::vector<double>& vd, std::size_t key, double d) {
if (key >= vd.size()) raise_vector_IndexError();
std::vector<double>::iterator vditer = vd.begin();
vditer[key] = d;
}
void delitem(std::vector<double>& vd, std::size_t key) {
if (key >= vd.size()) raise_vector_IndexError();
std::vector<double>::iterator vditer = vd.begin();
vd.erase(&vditer[key]);
}
// Convert vector_double to a regular Python tuple.
//
python::tuple as_tuple(const std::vector<double>& vd)
{
python::tuple t(vd.size());
for (int i = 0; i < vd.size(); i++) t.set_item(i,
python::ref(BOOST_PYTHON_CONVERSION::to_python(vd[i])));
return t;
}
// Function returning a vector_double object to Python.
//
std::vector<double> foo(int n)
{
std::vector<double> vd(n);
std::vector<double>::iterator vditer = vd.begin();
for (int i = 0; i < n; i++) vditer[i] = double(i);
return vd;
}
// Same as foo(), but avoid copying on return.
//
std::auto_ptr<std::vector<double> > bar(int n)
{
std::auto_ptr<std::vector<double> > vdptr(new std::vector<double>(n));
std::vector<double>::iterator vditer = vdptr->begin();
for (int i = 0; i < n; i++) vditer[i] = double(10 * i);
return vdptr;
}
}
BOOST_PYTHON_MODULE_INIT(simple_vector)
{
try
{
python::module_builder this_module("simple_vector");
python::class_builder<std::vector<double>, vector_double_wrapper>
vector_double(this_module, "vector_double");
vector_double.def(python::constructor<>());
vector_double.def(python::constructor<const int>());
vector_double.def(python::constructor<python::tuple>());
vector_double.def(&std::vector<double>::size, "__len__");
vector_double.def(getitem, "__getitem__");
vector_double.def(setitem, "__setitem__");
vector_double.def(delitem, "__delitem__");
vector_double.def(as_tuple, "as_tuple");
this_module.def(foo, "foo");
this_module.def(bar, "bar");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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# Example by Ullrich Koethe
r'''>>> from abstract import *
>>> class A(Abstract):
... def __init__(self, text):
... Abstract.__init__(self) # call the base class constructor
... self.text = text
... def test(self): # implement abstract function
... return self.text
...
>>> a = A("Hello")
>>> a.test()
'Hello'
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_abstract
doctest.testmod(test_abstract)
if __name__ == '__main__':
run()

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r'''>>> import tst_noncopyable
>>> tst_noncopyable.f()
1
2
3
>>> import tst_dvect1
>>> tst_dvect1.f()
(1.0, 2.0, 3.0, 4.0, 5.0)
(1, 2, 3, 4, 5)
(1, 2, 3, 4, 5)
(1, 2, 3, 4, 5)
(1, 2, 3, 4, 5)
(1, 2, 3, 4, 5)
(1, 2, 3, 4, 5)
>>> import tst_ivect1
>>> tst_ivect1.f()
(1, 2, 3, 4, 5)
(1.0, 2.0, 3.0, 4.0, 5.0)
(1.0, 2.0, 3.0, 4.0, 5.0)
(1.0, 2.0, 3.0, 4.0, 5.0)
(1.0, 2.0, 3.0, 4.0, 5.0)
(1.0, 2.0, 3.0, 4.0, 5.0)
(1.0, 2.0, 3.0, 4.0, 5.0)
>>> import sys
>>> if ("--broken-auto-ptr" in sys.argv):
... broken_auto_ptr = 1
... else:
... broken_auto_ptr = 0
>>> import tst_dvect2
>>> tst_dvect2.f(broken_auto_ptr)
1. auto_ptr_value_ivect_as_tuple
(1, 2, 3, 4, 5)
2. auto_ptr_value_ivect_as_tuple
None
1. auto_ptr_value_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. auto_ptr_value_dvect_as_tuple
None
1. shared_ptr_value_ivect_as_tuple
(1, 2, 3, 4, 5)
2. shared_ptr_value_ivect_as_tuple
(1, 2, 3, 4, 5)
1. shared_ptr_value_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. shared_ptr_value_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. auto_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. auto_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
1. auto_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. auto_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. shared_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. shared_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
1. shared_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. shared_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. auto_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. auto_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
1. auto_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. auto_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. shared_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. shared_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
1. shared_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. shared_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
>>> import tst_ivect2
>>> tst_ivect2.f(broken_auto_ptr)
1. auto_ptr_value_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. auto_ptr_value_dvect_as_tuple
None
1. auto_ptr_value_ivect_as_tuple
(1, 2, 3, 4, 5)
2. auto_ptr_value_ivect_as_tuple
None
1. shared_ptr_value_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. shared_ptr_value_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. shared_ptr_value_ivect_as_tuple
(1, 2, 3, 4, 5)
2. shared_ptr_value_ivect_as_tuple
(1, 2, 3, 4, 5)
1. auto_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. auto_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. auto_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. auto_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
1. shared_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. shared_ptr_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. shared_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. shared_ptr_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
1. auto_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. auto_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. auto_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. auto_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
1. shared_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
2. shared_ptr_const_reference_dvect_as_tuple
(1.0, 2.0, 3.0, 4.0, 5.0)
1. shared_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
2. shared_ptr_const_reference_ivect_as_tuple
(1, 2, 3, 4, 5)
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_cross_module
doctest.testmod(test_cross_module)
if __name__ == '__main__':
run()

View File

@@ -0,0 +1,22 @@
r'''>>> import do_it_yourself_converters
>>> ixset = do_it_yourself_converters.IndexingSet()
>>> ixset.add((1,2,3))
>>> ixset.add((4,5,6))
>>> ixset.add((7,8,9))
>>> print ixset.get(0)
(1, 2, 3)
>>> print ixset.get(1)
(4, 5, 6)
>>> print ixset.get(2)
(7, 8, 9)
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_do_it_yourself_converters
doctest.testmod(test_do_it_yourself_converters)
if __name__ == '__main__':
run()

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@@ -0,0 +1,17 @@
r'''>>> import getting_started1
>>> print getting_started1.greet()
hello, world
>>> number = 11
>>> print number, '*', number, '=', getting_started1.square(number)
11 * 11 = 121
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_getting_started1
doctest.testmod(test_getting_started1)
if __name__ == '__main__':
run()

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@@ -0,0 +1,29 @@
r'''>>> from getting_started2 import *
>>> hi = hello('California')
>>> hi.greet()
'Hello from California'
>>> invite(hi)
'Hello from California! Please come soon!'
>>> hi.invite()
'Hello from California! Please come soon!'
>>> class wordy(hello):
... def greet(self):
... return hello.greet(self) + ', where the weather is fine'
...
>>> hi2 = wordy('Florida')
>>> hi2.greet()
'Hello from Florida, where the weather is fine'
>>> invite(hi2)
'Hello from Florida! Please come soon!'
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_getting_started2
doctest.testmod(test_getting_started2)
if __name__ == '__main__':
run()

31
example/test_pickle1.py Normal file
View File

@@ -0,0 +1,31 @@
r'''>>> import pickle1
>>> import re
>>> import pickle
>>> pickle1.world.__module__
'pickle1'
>>> pickle1.world.__safe_for_unpickling__
1
>>> pickle1.world.__reduce__()
'world'
>>> assert re.match(
... "\(<extension class pickle1.world at [0-9a-fA-FxX]+>, \('Hello',\)\)",
... repr(pickle1.world('Hello').__reduce__()))
>>>
>>> wd = pickle1.world('California')
>>> pstr = pickle.dumps(wd)
>>> wl = pickle.loads(pstr)
>>> print wd.greet()
Hello from California!
>>> print wl.greet()
Hello from California!
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_pickle1
doctest.testmod(test_pickle1)
if __name__ == '__main__':
run()

45
example/test_pickle2.py Normal file
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@@ -0,0 +1,45 @@
r'''>>> import pickle2
>>> import re
>>> import pickle
>>> pickle2.world.__module__
'pickle2'
>>> pickle2.world.__safe_for_unpickling__
1
>>> pickle2.world.__reduce__()
'world'
>>> assert re.match(
... "\(<extension class pickle2.world at [0-9a-fA-FxX]+>, \('Hello',\), \(0,\)\)",
... repr(pickle2.world('Hello').__reduce__()))
>>>
>>> for number in (24, 42):
... wd = pickle2.world('California')
... wd.set_secret_number(number)
... pstr = pickle.dumps(wd)
... wl = pickle.loads(pstr)
... print wd.greet(), wd.get_secret_number()
... print wl.greet(), wl.get_secret_number()
Hello from California! 24
Hello from California! 24
Hello from California! 42
Hello from California! 0
# Now show that the __dict__ is not taken care of.
>>> wd = pickle2.world('California')
>>> wd.x = 1
>>> wd.__dict__
{'x': 1}
>>> try: pstr = pickle.dumps(wd)
... except RuntimeError, err: print err[0]
...
Incomplete pickle support (__getstate_manages_dict__ not set)
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_pickle2
doctest.testmod(test_pickle2)
if __name__ == '__main__':
run()

38
example/test_pickle3.py Normal file
View File

@@ -0,0 +1,38 @@
r'''>>> import pickle3
>>> import re
>>> import pickle
>>> pickle3.world.__module__
'pickle3'
>>> pickle3.world.__safe_for_unpickling__
1
>>> pickle3.world.__reduce__()
'world'
>>> assert re.match(
... "\(<extension class pickle3.world at [0-9a-fA-FxX]+>, \('Hello',\), \(\{\}, 0\)\)",
... repr(pickle3.world('Hello').__reduce__()))
>>>
>>> for number in (24, 42):
... wd = pickle3.world('California')
... wd.set_secret_number(number)
... wd.x = 2 * number
... wd.y = 'y' * number
... wd.z = 3. * number
... pstr = pickle.dumps(wd)
... wl = pickle.loads(pstr)
... print wd.greet(), wd.get_secret_number(), wd.__dict__
... print wl.greet(), wl.get_secret_number(), wl.__dict__
Hello from California! 24 {'z': 72.0, 'x': 48, 'y': 'yyyyyyyyyyyyyyyyyyyyyyyy'}
Hello from California! 24 {'z': 72.0, 'x': 48, 'y': 'yyyyyyyyyyyyyyyyyyyyyyyy'}
Hello from California! 42 {'z': 126.0, 'x': 84, 'y': 'yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy'}
Hello from California! 0 {'z': 126.0, 'x': 84, 'y': 'yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy'}
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_pickle3
doctest.testmod(test_pickle3)
if __name__ == '__main__':
run()

17
example/test_rwgk1.py Normal file
View File

@@ -0,0 +1,17 @@
r'''>>> import rwgk1
>>> print rwgk1.greet()
hello, world
>>> number = 11
>>> print number, '*', number, '=', rwgk1.square(number)
11 * 11 = 121
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_rwgk1
doctest.testmod(test_rwgk1)
if __name__ == '__main__':
run()

View File

@@ -0,0 +1,40 @@
r'''>>> import simple_vector
>>> v=simple_vector.vector_double()
>>> print v.as_tuple()
()
>>> v=simple_vector.vector_double(5)
>>> print v.as_tuple()
(0.0, 0.0, 0.0, 0.0, 0.0)
>>> print len(v)
5
>>> v=simple_vector.vector_double((3,4,5))
>>> print v.as_tuple()
(3.0, 4.0, 5.0)
>>> print v[1]
4.0
>>> v[1] = 40
>>> print v.as_tuple()
(3.0, 40.0, 5.0)
>>> for e in v:
... print e
3.0
40.0
5.0
>>> del v[1]
>>> print v.as_tuple()
(3.0, 5.0)
>>> print simple_vector.foo(11).as_tuple()
(0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0)
>>> print simple_vector.bar(12).as_tuple()
(0.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0, 110.0)
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_simple_vector
doctest.testmod(test_simple_vector)
if __name__ == '__main__':
run()

20
example/tst_dvect1.py Normal file
View File

@@ -0,0 +1,20 @@
def f():
import dvect
dv = dvect.dvect((1,2,3,4,5))
print dv.as_tuple()
iv = dv.as_ivect()
print iv.as_tuple()
print dvect.const_ivect_reference_as_tuple(iv)
aiv = dvect.ivect_as_auto_ptr(iv)
print dvect.const_ivect_reference_as_tuple(aiv)
siv = dvect.ivect_as_shared_ptr(iv)
print dvect.const_ivect_reference_as_tuple(siv)
print aiv.as_tuple()
print siv.as_tuple()
if (__name__ == "__main__"):
import sys, string
n = 1
if (len(sys.argv) > 1): n = string.atoi(sys.argv[1])
for i in xrange(n):
f()

98
example/tst_dvect2.py Normal file
View File

@@ -0,0 +1,98 @@
def f(broken_auto_ptr):
import dvect
import ivect
#
dv = dvect.dvect((1,2,3,4,5))
iv = dv.as_ivect()
#
aiv = dvect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_value_ivect_as_tuple'
print ivect.auto_ptr_value_ivect_as_tuple(aiv)
print '2. auto_ptr_value_ivect_as_tuple'
if (not broken_auto_ptr):
print ivect.auto_ptr_value_ivect_as_tuple(aiv)
else:
print None
#
adv = dvect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_value_dvect_as_tuple'
print ivect.auto_ptr_value_dvect_as_tuple(adv)
print '2. auto_ptr_value_dvect_as_tuple'
if (not broken_auto_ptr):
print ivect.auto_ptr_value_dvect_as_tuple(adv)
else:
print None
#
siv = dvect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_value_ivect_as_tuple'
print ivect.shared_ptr_value_ivect_as_tuple(siv)
print '2. shared_ptr_value_ivect_as_tuple'
print ivect.shared_ptr_value_ivect_as_tuple(siv)
#
sdv = dvect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_value_dvect_as_tuple'
print ivect.shared_ptr_value_dvect_as_tuple(sdv)
print '2. shared_ptr_value_dvect_as_tuple'
print ivect.shared_ptr_value_dvect_as_tuple(sdv)
#
aiv = dvect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_reference_ivect_as_tuple'
print ivect.auto_ptr_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_reference_ivect_as_tuple'
print ivect.auto_ptr_reference_ivect_as_tuple(aiv)
#
adv = dvect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_reference_dvect_as_tuple'
print ivect.auto_ptr_reference_dvect_as_tuple(adv)
print '2. auto_ptr_reference_dvect_as_tuple'
print ivect.auto_ptr_reference_dvect_as_tuple(adv)
#
siv = dvect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_reference_ivect_as_tuple'
print ivect.shared_ptr_reference_ivect_as_tuple(siv)
print '2. shared_ptr_reference_ivect_as_tuple'
print ivect.shared_ptr_reference_ivect_as_tuple(siv)
#
sdv = dvect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_reference_dvect_as_tuple'
print ivect.shared_ptr_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_reference_dvect_as_tuple'
print ivect.shared_ptr_reference_dvect_as_tuple(sdv)
#
aiv = dvect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_const_reference_ivect_as_tuple'
print ivect.auto_ptr_const_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_const_reference_ivect_as_tuple'
print ivect.auto_ptr_const_reference_ivect_as_tuple(aiv)
#
adv = dvect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_const_reference_dvect_as_tuple'
print ivect.auto_ptr_const_reference_dvect_as_tuple(adv)
print '2. auto_ptr_const_reference_dvect_as_tuple'
print ivect.auto_ptr_const_reference_dvect_as_tuple(adv)
#
siv = dvect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_const_reference_ivect_as_tuple'
print ivect.shared_ptr_const_reference_ivect_as_tuple(siv)
print '2. shared_ptr_const_reference_ivect_as_tuple'
print ivect.shared_ptr_const_reference_ivect_as_tuple(siv)
#
sdv = dvect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_const_reference_dvect_as_tuple'
print ivect.shared_ptr_const_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_const_reference_dvect_as_tuple'
print ivect.shared_ptr_const_reference_dvect_as_tuple(sdv)
if (__name__ == "__main__"):
import sys, string
broken_auto_ptr = 0
n = 1
if (len(sys.argv) > 1):
if (sys.argv[1] == "--broken-auto-ptr"):
broken_auto_ptr = 1
if (len(sys.argv) > 2):
n = string.atoi(sys.argv[2])
else:
n = string.atoi(sys.argv[1])
for i in xrange(n):
f(broken_auto_ptr)

20
example/tst_ivect1.py Normal file
View File

@@ -0,0 +1,20 @@
def f():
import ivect
iv = ivect.ivect((1,2,3,4,5))
print iv.as_tuple()
dv = iv.as_dvect()
print dv.as_tuple()
print ivect.const_dvect_reference_as_tuple(dv)
adv = ivect.dvect_as_auto_ptr(dv)
print ivect.const_dvect_reference_as_tuple(adv)
sdv = ivect.dvect_as_shared_ptr(dv)
print ivect.const_dvect_reference_as_tuple(sdv)
print adv.as_tuple()
print sdv.as_tuple()
if (__name__ == "__main__"):
import sys, string
n = 1
if (len(sys.argv) > 1): n = string.atoi(sys.argv[1])
for i in xrange(n):
f()

98
example/tst_ivect2.py Normal file
View File

@@ -0,0 +1,98 @@
def f(broken_auto_ptr):
import ivect
import dvect
#
iv = ivect.ivect((1,2,3,4,5))
dv = iv.as_dvect()
#
adv = ivect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_value_dvect_as_tuple'
print dvect.auto_ptr_value_dvect_as_tuple(adv)
print '2. auto_ptr_value_dvect_as_tuple'
if (not broken_auto_ptr):
print dvect.auto_ptr_value_dvect_as_tuple(adv)
else:
print None
#
aiv = ivect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_value_ivect_as_tuple'
print dvect.auto_ptr_value_ivect_as_tuple(aiv)
print '2. auto_ptr_value_ivect_as_tuple'
if (not broken_auto_ptr):
print dvect.auto_ptr_value_ivect_as_tuple(aiv)
else:
print None
#
sdv = ivect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_value_dvect_as_tuple'
print dvect.shared_ptr_value_dvect_as_tuple(sdv)
print '2. shared_ptr_value_dvect_as_tuple'
print dvect.shared_ptr_value_dvect_as_tuple(sdv)
#
siv = ivect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_value_ivect_as_tuple'
print dvect.shared_ptr_value_ivect_as_tuple(siv)
print '2. shared_ptr_value_ivect_as_tuple'
print dvect.shared_ptr_value_ivect_as_tuple(siv)
#
adv = ivect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_reference_dvect_as_tuple'
print dvect.auto_ptr_reference_dvect_as_tuple(adv)
print '2. auto_ptr_reference_dvect_as_tuple'
print dvect.auto_ptr_reference_dvect_as_tuple(adv)
#
aiv = ivect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_reference_ivect_as_tuple'
print dvect.auto_ptr_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_reference_ivect_as_tuple'
print dvect.auto_ptr_reference_ivect_as_tuple(aiv)
#
sdv = ivect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_reference_dvect_as_tuple'
print dvect.shared_ptr_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_reference_dvect_as_tuple'
print dvect.shared_ptr_reference_dvect_as_tuple(sdv)
#
siv = ivect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_reference_ivect_as_tuple'
print dvect.shared_ptr_reference_ivect_as_tuple(siv)
print '2. shared_ptr_reference_ivect_as_tuple'
print dvect.shared_ptr_reference_ivect_as_tuple(siv)
#
adv = ivect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_const_reference_dvect_as_tuple'
print dvect.auto_ptr_const_reference_dvect_as_tuple(adv)
print '2. auto_ptr_const_reference_dvect_as_tuple'
print dvect.auto_ptr_const_reference_dvect_as_tuple(adv)
#
aiv = ivect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_const_reference_ivect_as_tuple'
print dvect.auto_ptr_const_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_const_reference_ivect_as_tuple'
print dvect.auto_ptr_const_reference_ivect_as_tuple(aiv)
#
sdv = ivect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_const_reference_dvect_as_tuple'
print dvect.shared_ptr_const_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_const_reference_dvect_as_tuple'
print dvect.shared_ptr_const_reference_dvect_as_tuple(sdv)
#
siv = ivect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_const_reference_ivect_as_tuple'
print dvect.shared_ptr_const_reference_ivect_as_tuple(siv)
print '2. shared_ptr_const_reference_ivect_as_tuple'
print dvect.shared_ptr_const_reference_ivect_as_tuple(siv)
if (__name__ == "__main__"):
import sys, string
broken_auto_ptr = 0
n = 1
if (len(sys.argv) > 1):
if (sys.argv[1] == "--broken-auto-ptr"):
broken_auto_ptr = 1
if (len(sys.argv) > 2):
n = string.atoi(sys.argv[2])
else:
n = string.atoi(sys.argv[1])
for i in xrange(n):
f(broken_auto_ptr)

View File

@@ -0,0 +1,16 @@
def f():
import noncopyable_export
import noncopyable_import
s1 = noncopyable_export.store(1)
print s1.recall()
s2 = noncopyable_export.store(2)
print s2.recall()
s3 = noncopyable_import.add_stores(s1, s2)
print s3.recall()
if (__name__ == "__main__"):
import sys, string
n = 1
if (len(sys.argv) > 1): n = string.atoi(sys.argv[1])
for i in xrange(n):
f()

View File

@@ -1,3 +1,6 @@
// Revision History:
// Mar 03 01 added: pickle safety measures (Ralf W. Grosse-Kunstleve)
#ifndef CLASS_WRAPPER_DWA101000_H_
# define CLASS_WRAPPER_DWA101000_H_
@@ -24,11 +27,18 @@ class class_builder
~class_builder()
{}
inline void dict_defines_state() {
add(ref(BOOST_PYTHON_CONVERSION::to_python(1)), "__dict_defines_state__");
}
inline void getstate_manages_dict() {
add(ref(BOOST_PYTHON_CONVERSION::to_python(1)), "__getstate_manages_dict__");
}
// define constructors
template <class signature>
void def(const signature& signature)
{ m_class->def(signature); }
void def(const signature& s)
{ m_class->def(s); }
// export heterogeneous reverse-argument operators
// (type of lhs: 'left', of rhs: 'right')

View File

@@ -5,6 +5,11 @@
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
//
// Revision History:
// 04 Mar 01 Fixed std::complex<> stuff to work with MSVC (David Abrahams)
// 03 Mar 01 added: converters for [plain] char and std::complex
// (Ralf W. Grosse-Kunstleve)
#ifndef METHOD_DWA122899_H_
# define METHOD_DWA122899_H_
@@ -17,6 +22,17 @@
# include <boost/python/errors.hpp>
# include <string>
# ifdef BOOST_MSVC6_OR_EARLIER
# pragma warning(push)
# pragma warning(disable:4275) // disable a bogus warning caused by <complex>
# endif
# include <complex>
# ifdef BOOST_MSVC6_OR_EARLIER
# pragma warning(pop)
# endif
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE // this is a gcc 2.95.2 bug workaround
// This can be instantiated on an enum to provide the to_python/from_python
@@ -70,6 +86,30 @@ inline void xdecref(T* p)
xdecref_impl(reinterpret_cast<PyObject*>(p_base));
}
namespace detail {
void expect_complex(PyObject*);
template <class T>
std::complex<T> complex_from_python(PyObject* p, boost::python::type<T>)
{
expect_complex(p);
return std::complex<T>(
static_cast<T>(PyComplex_RealAsDouble(p)),
static_cast<T>(PyComplex_ImagAsDouble(p)));
}
template <class T>
PyObject* complex_to_python(const std::complex<T>& sc) {
Py_complex pcc;
pcc.real = sc.real();
pcc.imag = sc.imag();
return PyComplex_FromCComplex(pcc);
}
}
}} // namespace boost::python
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
@@ -100,6 +140,10 @@ PyObject* to_python(unsigned short);
unsigned short from_python(PyObject*, boost::python::type<unsigned short>);
unsigned short from_python(PyObject*, boost::python::type<const unsigned short&>);
PyObject* to_python(char);
char from_python(PyObject*, boost::python::type<char>);
char from_python(PyObject*, boost::python::type<const char&>);
PyObject* to_python(signed char);
signed char from_python(PyObject*, boost::python::type<signed char>);
signed char from_python(PyObject*, boost::python::type<const signed char&>);
@@ -130,6 +174,36 @@ PyObject* to_python(const std::string& s);
std::string from_python(PyObject*, boost::python::type<std::string>);
std::string from_python(PyObject*, boost::python::type<const std::string&>);
inline PyObject* to_python(const std::complex<float>& x)
{
return boost::python::detail::complex_to_python<float>(x);
}
inline PyObject* to_python(const std::complex<double>& x)
{
return boost::python::detail::complex_to_python<double>(x);
}
inline std::complex<double> from_python(PyObject* p,
boost::python::type<std::complex<double> >) {
return boost::python::detail::complex_from_python(p, boost::python::type<double>());
}
inline std::complex<double> from_python(PyObject* p,
boost::python::type<const std::complex<double>&>) {
return boost::python::detail::complex_from_python(p, boost::python::type<double>());
}
inline std::complex<float> from_python(PyObject* p,
boost::python::type<std::complex<float> >) {
return boost::python::detail::complex_from_python(p, boost::python::type<float>());
}
inline std::complex<float> from_python(PyObject* p,
boost::python::type<const std::complex<float>&>) {
return boost::python::detail::complex_from_python(p, boost::python::type<float>());
}
// For when your C++ function really wants to pass/return a PyObject*
PyObject* to_python(PyObject*);
PyObject* from_python(PyObject*, boost::python::type<PyObject*>);
@@ -304,6 +378,11 @@ inline unsigned short from_python(PyObject* p, boost::python::type<const unsigne
return from_python(p, boost::python::type<unsigned short>());
}
inline char from_python(PyObject* p, boost::python::type<const char&>)
{
return from_python(p, boost::python::type<char>());
}
inline signed char from_python(PyObject* p, boost::python::type<const signed char&>)
{
return from_python(p, boost::python::type<signed char>());

View File

@@ -0,0 +1,322 @@
/* (C) Copyright Ralf W. Grosse-Kunstleve 2001. Permission to copy, use,
modify, sell and distribute this software is granted provided this
copyright notice appears in all copies. This software is provided
"as is" without express or implied warranty, and with no claim as to
its suitability for any purpose.
Revision History:
17 Apr 01 merged into boost CVS trunk (Ralf W. Grosse-Kunstleve)
*/
/* Implementation of Boost.Python cross-module support.
See root/libs/python/doc/cross_module.html for details.
*/
#ifndef CROSS_MODULE_HPP
# define CROSS_MODULE_HPP
# include <boost/python/class_builder.hpp>
namespace boost { namespace python {
struct import_error : error_already_set {};
struct export_error : error_already_set {};
}}
namespace boost { namespace python { namespace detail {
// Concept: throw exception if api_major is changed
// show warning on stderr if api_minor is changed
const int export_converters_api_major = 4;
const int export_converters_api_minor = 1;
extern const char* converters_attribute_name;
void* import_converter_object(const std::string& module_name,
const std::string& py_class_name,
const std::string& attribute_name);
void check_export_converters_api(const int importing_major,
const int importing_minor,
const int imported_major,
const int imported_minor);
}}}
// forward declaration
namespace boost { namespace python { namespace detail {
template <class T> class import_extension_class;
}}}
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
/* This class template is instantiated by import_converters<T>.
This class is a look-alike of class python_extension_class_converters.
The converters in this class are wrappers that call converters
imported from another module.
To ensure that the dynamic loader resolves all symbols in the
intended way, the signature of all friend functions is changed with
respect to the original functions in class
python_extension_class_converters by adding an arbitrary additional
parameter with a default value, in this case "bool sig = false".
See also: comments for class export_converter_object_base below.
*/
template <class T>
class python_import_extension_class_converters
{
public:
friend python_import_extension_class_converters py_extension_class_converters(boost::python::type<T>, bool sig = false) {
return python_import_extension_class_converters();
}
PyObject* to_python(const T& x) const {
return boost::python::detail::import_extension_class<T>::get_converters()->to_python(x);
}
friend T* from_python(PyObject* p, boost::python::type<T*> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_Ts(p, t);
}
friend const T* from_python(PyObject* p, boost::python::type<const T*> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_cTs(p, t);
}
friend const T* from_python(PyObject* p, boost::python::type<const T*const&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_cTscr(p, t);
}
friend T* from_python(PyObject* p, boost::python::type<T* const&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_Tscr(p, t);
}
friend T& from_python(PyObject* p, boost::python::type<T&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_Tr(p, t);
}
friend const T& from_python(PyObject* p, boost::python::type<const T&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_cTr(p, t);
}
friend const T& from_python(PyObject* p, boost::python::type<T> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_T(p, t);
}
friend std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<std::auto_ptr<T>&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_aTr(p, t);
}
friend std::auto_ptr<T> from_python(PyObject* p, boost::python::type<std::auto_ptr<T> > t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_aT(p, t);
}
friend const std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<const std::auto_ptr<T>&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_caTr(p, t);
}
friend PyObject* to_python(std::auto_ptr<T> x, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->to_python(x);
}
friend boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T>&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_sTr(p, t);
}
friend const boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T> > t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_sT(p, t);
}
friend const boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<const boost::shared_ptr<T>&> t, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->from_python_csTr(p, t);
}
friend PyObject* to_python(boost::shared_ptr<T> x, bool sig = false) {
return boost::python::detail::import_extension_class<T>::get_converters()->to_python(x);
}
};
BOOST_PYTHON_END_CONVERSION_NAMESPACE
namespace boost { namespace python {
BOOST_PYTHON_IMPORT_CONVERSION(python_import_extension_class_converters);
/* This class template is instantiated by export_converters().
A pointer to this class is exported/imported via the Python API.
Using the Python API ensures maximum portability.
All member functions are virtual. This is, what we export/import
is essentially just a pointer to a vtbl.
To work around a deficiency of Visual C++ 6.0, the name of each
from_python() member functions is made unique by appending a few
characters (derived in a ad-hoc manner from the corresponding type).
*/
template <class T>
struct export_converter_object_base
{
virtual int get_api_major() const { return detail::export_converters_api_major; }
virtual int get_api_minor() const { return detail::export_converters_api_minor; }
virtual PyObject* to_python(const T& x) = 0;
virtual T* from_python_Ts(PyObject* p, boost::python::type<T*> t) = 0;
virtual const T* from_python_cTs(PyObject* p, boost::python::type<const T*> t) = 0;
virtual const T* from_python_cTscr(PyObject* p, boost::python::type<const T*const&> t) = 0;
virtual T* from_python_Tscr(PyObject* p, boost::python::type<T* const&> t) = 0;
virtual T& from_python_Tr(PyObject* p, boost::python::type<T&> t) = 0;
virtual const T& from_python_cTr(PyObject* p, boost::python::type<const T&> t) = 0;
virtual const T& from_python_T(PyObject* p, boost::python::type<T> t) = 0;
virtual std::auto_ptr<T>& from_python_aTr(PyObject* p, boost::python::type<std::auto_ptr<T>&> t) = 0;
virtual std::auto_ptr<T> from_python_aT(PyObject* p, boost::python::type<std::auto_ptr<T> > t) = 0;
virtual const std::auto_ptr<T>& from_python_caTr(PyObject* p, boost::python::type<const std::auto_ptr<T>&> t) = 0;
virtual PyObject* to_python(std::auto_ptr<T> x) = 0;
virtual boost::shared_ptr<T>& from_python_sTr(PyObject* p, boost::python::type<boost::shared_ptr<T>&> t) = 0;
virtual const boost::shared_ptr<T>& from_python_sT(PyObject* p, boost::python::type<boost::shared_ptr<T> > t) = 0;
virtual const boost::shared_ptr<T>& from_python_csTr(PyObject* p, boost::python::type<const boost::shared_ptr<T>&> t) = 0;
virtual PyObject* to_python(boost::shared_ptr<T> x) = 0;
};
// Converters to be used if T is not copyable.
template <class T>
struct export_converter_object_noncopyable : export_converter_object_base<T>
{
virtual PyObject* to_python(const T& x) {
PyErr_SetString(PyExc_RuntimeError,
"to_python(const T&) converter not exported");
throw import_error();
}
virtual T* from_python_Ts(PyObject* p, boost::python::type<T*> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual const T* from_python_cTs(PyObject* p, boost::python::type<const T*> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual const T* from_python_cTscr(PyObject* p, boost::python::type<const T*const&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual T* from_python_Tscr(PyObject* p, boost::python::type<T* const&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual T& from_python_Tr(PyObject* p, boost::python::type<T&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual const T& from_python_cTr(PyObject* p, boost::python::type<const T&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual const T& from_python_T(PyObject* p, boost::python::type<T> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual std::auto_ptr<T>& from_python_aTr(PyObject* p, boost::python::type<std::auto_ptr<T>&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual std::auto_ptr<T> from_python_aT(PyObject* p, boost::python::type<std::auto_ptr<T> > t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual const std::auto_ptr<T>& from_python_caTr(PyObject* p, boost::python::type<const std::auto_ptr<T>&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual PyObject* to_python(std::auto_ptr<T> x) {
return BOOST_PYTHON_CONVERSION::to_python(x);
}
virtual boost::shared_ptr<T>& from_python_sTr(PyObject* p, boost::python::type<boost::shared_ptr<T>&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual const boost::shared_ptr<T>& from_python_sT(PyObject* p, boost::python::type<boost::shared_ptr<T> > t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual const boost::shared_ptr<T>& from_python_csTr(PyObject* p, boost::python::type<const boost::shared_ptr<T>&> t) {
return BOOST_PYTHON_CONVERSION::from_python(p, t);
}
virtual PyObject* to_python(boost::shared_ptr<T> x) {
return BOOST_PYTHON_CONVERSION::to_python(x);
}
};
// The addditional to_python() converter that can be used if T is copyable.
template <class T>
struct export_converter_object : export_converter_object_noncopyable<T>
{
virtual PyObject* to_python(const T& x) {
return BOOST_PYTHON_CONVERSION::py_extension_class_converters(boost::python::type<T>()).to_python(x);
}
};
namespace detail {
/* This class template is instantiated by import_converters<T>.
Its purpose is to import the converter_object via the Python API.
The actual import is only done once. The pointer to the
imported converter object is kept in the static data member
imported_converters.
*/
template <class T>
class import_extension_class
: public python_import_extension_class_converters<T>
{
public:
inline import_extension_class(const char* module, const char* py_class) {
m_module = module;
m_py_class = py_class;
}
static boost::python::export_converter_object_base<T>* get_converters();
private:
static std::string m_module;
static std::string m_py_class;
static boost::python::export_converter_object_base<T>* imported_converters;
};
template <class T> std::string import_extension_class<T>::m_module;
template <class T> std::string import_extension_class<T>::m_py_class;
template <class T>
boost::python::export_converter_object_base<T>*
import_extension_class<T>::imported_converters = 0;
template <class T>
boost::python::export_converter_object_base<T>*
import_extension_class<T>::get_converters() {
if (imported_converters == 0) {
void* cobject
= import_converter_object(m_module, m_py_class,
converters_attribute_name);
imported_converters
= static_cast<boost::python::export_converter_object_base<T>*>(cobject);
check_export_converters_api(
export_converters_api_major,
export_converters_api_minor,
imported_converters->get_api_major(),
imported_converters->get_api_minor());
}
return imported_converters;
}
}}} // namespace boost::python::detail
namespace boost { namespace python {
// Implementation of export_converters().
template <class T, class U>
void export_converters(class_builder<T, U>& cb)
{
static export_converter_object<T> export_cvts;
cb.add(
ref(PyCObject_FromVoidPtr(reinterpret_cast<void*>(&export_cvts), NULL)),
detail::converters_attribute_name);
}
// Implementation of export_converters_noncopyable().
template <class T, class U>
void export_converters_noncopyable(class_builder<T, U>& cb)
{
static export_converter_object_noncopyable<T> export_cvts;
cb.add(
ref(PyCObject_FromVoidPtr(reinterpret_cast<void*>(&export_cvts), NULL)),
detail::converters_attribute_name);
}
// Implementation of import_converters<T>.
template <class T>
class import_converters
: python_import_extension_class_converters<T> // Works around MSVC6.x/GCC2.95.2 bug described
// at the bottom of class_builder.hpp.
{
public:
import_converters(const char* module, const char* py_class)
: m_class(new detail::import_extension_class<T>(module, py_class))
{ }
private:
boost::shared_ptr<detail::import_extension_class<T> > m_class;
};
}} // namespace boost::python
#endif // CROSS_MODULE_HPP

View File

@@ -5,6 +5,9 @@
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
//
// Revision History:
// Mar 01 01 Use PyObject_INIT() instead of trying to hand-initialize (David Abrahams)
#ifndef BASE_OBJECT_DWA051600_H_
# define BASE_OBJECT_DWA051600_H_
@@ -46,9 +49,8 @@ base_object<python_type>::base_object(PyTypeObject* type_obj)
std::
#endif
memset(bp, 0, sizeof(base_python_type));
ob_refcnt = 1;
ob_type = type_obj;
Py_INCREF(type_obj);
PyObject_INIT(bp, type_obj);
}
template <class python_type>

View File

@@ -6,6 +6,9 @@
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
// Revision History:
// 04 Mar 01 Some fixes so it will compile with Intel C++ (Dave Abrahams)
#ifndef CONFIG_DWA052200_H_
# define CONFIG_DWA052200_H_
@@ -21,7 +24,7 @@
# else
# define BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE namespace boost { namespace python {
# define BOOST_PYTHON_END_CONVERSION_NAMESPACE }} // namespace boost::python
# define BOOST_PYTHON_CONVERSION python
# define BOOST_PYTHON_CONVERSION boost::python
# define BOOST_PYTHON_IMPORT_CONVERSION(x) void never_defined() // so we can follow the macro with a ';'
# endif
@@ -46,11 +49,18 @@
# endif
// The STLport puts all of the standard 'C' library names in std (as far as the
// user is concerned), but without it you need a fix if you're using MSVC.
# if defined(BOOST_MSVC6_OR_EARLIER) && !defined(__STLPORT)
// user is concerned), but without it you need a fix if you're using MSVC or
// Intel C++
# if defined(BOOST_MSVC_STD_ITERATOR)
# define BOOST_CSTD_
# else
# define BOOST_CSTD_ std
# endif
#ifdef _WIN32
# define BOOST_PYTHON_MODULE_INIT(name) extern "C" __declspec(dllexport) void init##name()
#else
# define BOOST_PYTHON_MODULE_INIT(name) extern "C" void init##name()
#endif
#endif // CONFIG_DWA052200_H_

View File

@@ -6,9 +6,14 @@
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
//
// This file automatically generated for 5-argument constructors by
// This file automatically generated for 10-argument constructors by
// gen_extclass.python
// Revision History:
// 17 Apr 01 Comment added with reference to cross_module.hpp (R.W. Grosse-Kunstleve)
// 05 Mar 01 Fixed a bug which prevented auto_ptr values from being converted
// to_python (Dave Abrahams)
#ifndef EXTENSION_CLASS_DWA052000_H_
# define EXTENSION_CLASS_DWA052000_H_
@@ -22,6 +27,7 @@
# include <boost/python/detail/init_function.hpp>
# include <typeinfo>
# include <boost/smart_ptr.hpp>
# include <boost/type_traits.hpp>
namespace boost { namespace python {
@@ -61,7 +67,7 @@ T* check_non_null(T* p)
return p;
}
template <class T> class held_instance;
template <class Held> class held_instance;
typedef void* (*conversion_function_ptr)(void*);
@@ -133,6 +139,26 @@ class class_registry
static std::vector<derived_class_info> static_derived_class_info;
};
template <bool is_pointer>
struct is_null_helper
{
template <class Ptr>
static bool test(Ptr x) { return x == 0; }
};
template <>
struct is_null_helper<false>
{
template <class Ptr>
static bool test(const Ptr& x) { return x.get() == 0; }
};
template <class Ptr>
bool is_null(const Ptr& x)
{
return is_null_helper<(is_pointer<Ptr>::value)>::test(x);
}
}}} // namespace boost::python::detail
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
@@ -141,6 +167,14 @@ BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
// and U. T is the class the user really intends to wrap. U is a class derived
// from T with some virtual function overriding boilerplate, or if there are no
// virtual functions, U = held_instance<T>.
//
// A look-alike of this class in root/boost/python/cross_module.hpp
// is used for the implementation of the cross-module support
// (export_converters and import_converters). If from_python
// and to_python converters are added or removed from the class
// below, the class python_import_extension_class_converters has
// to be modified accordingly.
//
template <class T, class U = boost::python::detail::held_instance<T> >
class python_extension_class_converters
{
@@ -178,9 +212,9 @@ class python_extension_class_converters
new boost::python::detail::instance_value_holder<T,U>(result.get(), x)));
return result.release();
}
// Convert to T*
friend T* from_python(PyObject* obj, boost::python::type<T*>)
friend
T* non_null_from_python(PyObject* obj, boost::python::type<T*>)
{
// downcast to an extension_instance, then find the actual T
boost::python::detail::extension_instance* self = boost::python::detail::get_extension_instance(obj);
@@ -201,9 +235,18 @@ class python_extension_class_converters
throw boost::python::argument_error();
}
// Convert to PtrType, where PtrType can be dereferenced to obtain a T.
// Convert to T*
friend T* from_python(PyObject* obj, boost::python::type<T*>)
{
if (obj == Py_None)
return 0;
else
return non_null_from_python(obj, boost::python::type<T*>());
}
// Extract from obj a mutable reference to the PtrType object which is holding a T.
template <class PtrType>
static PtrType& ptr_from_python(PyObject* obj, boost::python::type<PtrType>)
static PtrType& smart_ptr_reference(PyObject* obj, boost::python::type<PtrType>)
{
// downcast to an extension_instance, then find the actual T
boost::python::detail::extension_instance* self = boost::python::detail::get_extension_instance(obj);
@@ -220,9 +263,29 @@ class python_extension_class_converters
throw boost::python::argument_error();
}
// Extract from obj a reference to the PtrType object which is holding a
// T. If it weren't for auto_ptr, it would be a constant reference. Do not
// modify the referent except by copying an auto_ptr! If obj is None, the
// reference denotes a default-constructed PtrType
template <class PtrType>
static PyObject* ptr_to_python(PtrType x)
static PtrType& smart_ptr_value(PyObject* obj, boost::python::type<PtrType>)
{
if (obj == Py_None)
{
static PtrType null_ptr;
return null_ptr;
}
return smart_ptr_reference(obj, boost::python::type<PtrType>());
}
template <class PtrType>
static PyObject* smart_ptr_to_python(PtrType x)
{
if (boost::python::detail::is_null(x))
{
return boost::python::detail::none();
}
boost::python::reference<boost::python::detail::extension_instance> result(create_instance());
result->add_implementation(
std::auto_ptr<boost::python::detail::instance_holder_base>(
@@ -254,7 +317,7 @@ class python_extension_class_converters
// Convert to T&
friend T& from_python(PyObject* p, boost::python::type<T&>)
{ return *boost::python::detail::check_non_null(from_python(p, boost::python::type<T*>())); }
{ return *boost::python::detail::check_non_null(non_null_from_python(p, boost::python::type<T*>())); }
// Convert to const T&
friend const T& from_python(PyObject* p, boost::python::type<const T&>)
@@ -265,28 +328,28 @@ class python_extension_class_converters
{ return from_python(p, boost::python::type<T&>()); }
friend std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<std::auto_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<std::auto_ptr<T> >()); }
{ return smart_ptr_reference(p, boost::python::type<std::auto_ptr<T> >()); }
friend std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<std::auto_ptr<T> >)
{ return ptr_from_python(p, boost::python::type<std::auto_ptr<T> >()); }
friend std::auto_ptr<T> from_python(PyObject* p, boost::python::type<std::auto_ptr<T> >)
{ return smart_ptr_value(p, boost::python::type<std::auto_ptr<T> >()); }
friend const std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<const std::auto_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<std::auto_ptr<T> >()); }
{ return smart_ptr_value(p, boost::python::type<std::auto_ptr<T> >()); }
friend PyObject* to_python(std::auto_ptr<T> x)
{ return ptr_to_python(x); }
{ return smart_ptr_to_python(x); }
friend boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<boost::shared_ptr<T> >()); }
{ return smart_ptr_reference(p, boost::python::type<boost::shared_ptr<T> >()); }
friend boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T> >)
{ return ptr_from_python(p, boost::python::type<boost::shared_ptr<T> >()); }
friend const boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T> >)
{ return smart_ptr_value(p, boost::python::type<boost::shared_ptr<T> >()); }
friend const boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<const boost::shared_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<boost::shared_ptr<T> >()); }
{ return smart_ptr_value(p, boost::python::type<boost::shared_ptr<T> >()); }
friend PyObject* to_python(boost::shared_ptr<T> x)
{ return ptr_to_python(x); }
{ return smart_ptr_to_python(x); }
};
// Convert T to_python, instantiated on demand and only if there isn't a
@@ -363,8 +426,8 @@ class extension_class
~extension_class();
// define constructors
template <class A1, class A2, class A3, class A4, class A5>
inline void def(constructor<A1, A2, A3, A4, A5>)
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
inline void def(constructor<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10>)
// The following incantation builds a signature1, signature2,... object. It
// should _all_ get optimized away.
{ add_constructor(
@@ -373,7 +436,12 @@ class extension_class
prepend(type<A3>::id(),
prepend(type<A4>::id(),
prepend(type<A5>::id(),
signature0()))))));
prepend(type<A6>::id(),
prepend(type<A7>::id(),
prepend(type<A8>::id(),
prepend(type<A9>::id(),
prepend(type<A10>::id(),
signature0())))))))))));
}
@@ -608,23 +676,33 @@ class extension_class
// A simple wrapper over a T which allows us to use extension_class<T> with a
// single template parameter only. See extension_class<T>, above.
template <class T>
class held_instance : public T
template <class Held>
class held_instance : public Held
{
// There are no member functions: we want to avoid inadvertently overriding
// any virtual functions in T.
// any virtual functions in Held.
public:
held_instance(PyObject*) : T() {}
held_instance(PyObject*) : Held() {}
template <class A1>
held_instance(PyObject*, A1 a1) : T(a1) {}
held_instance(PyObject*, A1 a1) : Held(a1) {}
template <class A1, class A2>
held_instance(PyObject*, A1 a1, A2 a2) : T(a1, a2) {}
held_instance(PyObject*, A1 a1, A2 a2) : Held(a1, a2) {}
template <class A1, class A2, class A3>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3) : T(a1, a2, a3) {}
held_instance(PyObject*, A1 a1, A2 a2, A3 a3) : Held(a1, a2, a3) {}
template <class A1, class A2, class A3, class A4>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4) : T(a1, a2, a3, a4) {}
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4) : Held(a1, a2, a3, a4) {}
template <class A1, class A2, class A3, class A4, class A5>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) : T(a1, a2, a3, a4, a5) {}
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) : Held(a1, a2, a3, a4, a5) {}
template <class A1, class A2, class A3, class A4, class A5, class A6>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) : Held(a1, a2, a3, a4, a5, a6) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7) : Held(a1, a2, a3, a4, a5, a6, a7) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8) : Held(a1, a2, a3, a4, a5, a6, a7, a8) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9) : Held(a1, a2, a3, a4, a5, a6, a7, a8, a9) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
held_instance(PyObject*, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9, A10 a10) : Held(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) {}
};
// Abstract base class for all obj holders. Base for template class
@@ -676,6 +754,21 @@ public:
template <class A1, class A2, class A3, class A4, class A5>
instance_value_holder(extension_instance* p, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) :
m_held(p, a1, a2, a3, a4, a5) {}
template <class A1, class A2, class A3, class A4, class A5, class A6>
instance_value_holder(extension_instance* p, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) :
m_held(p, a1, a2, a3, a4, a5, a6) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7>
instance_value_holder(extension_instance* p, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7) :
m_held(p, a1, a2, a3, a4, a5, a6, a7) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
instance_value_holder(extension_instance* p, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8) :
m_held(p, a1, a2, a3, a4, a5, a6, a7, a8) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
instance_value_holder(extension_instance* p, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9) :
m_held(p, a1, a2, a3, a4, a5, a6, a7, a8, a9) {}
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
instance_value_holder(extension_instance* p, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9, A10 a10) :
m_held(p, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) {}
public: // implementation of instance_holder_base required interface
bool held_by_value() { return true; }
@@ -721,8 +814,6 @@ class extension_instance : public instance
// Template function implementations
//
tuple extension_class_coerce(ref l, ref r);
template <class T, class U>
extension_class<T, U>::extension_class()
: extension_class_base(typeid(T).name())
@@ -743,7 +834,7 @@ void extension_class<T, U>::def_standard_coerce()
ref coerce_fct = dict().get_item(string("__coerce__"));
if(coerce_fct.get() == 0) // not yet defined
this->def(&extension_class_coerce, "__coerce__");
this->def(&standard_coerce, "__coerce__");
}
template <class T, class U>
@@ -831,4 +922,3 @@ std::vector<derived_class_info> class_registry<T>::static_derived_class_info;
}}} // namespace boost::python::detail
#endif // EXTENSION_CLASS_DWA052000_H_

View File

@@ -110,11 +110,11 @@ template <class T, class A1, class A2> struct init2;
template <class T, class A1, class A2, class A3> struct init3;
template <class T, class A1, class A2, class A3, class A4> struct init4;
template <class T, class A1, class A2, class A3, class A4, class A5> struct init5;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6> struct Init6;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7> struct Init7;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8> struct Init8;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9> struct Init9;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10> struct Init10;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6> struct init6;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7> struct init7;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8> struct init8;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9> struct init9;
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10> struct init10;
template <class T>
struct init_function
@@ -165,7 +165,7 @@ struct init_function
template <class A1, class A2, class A3, class A4, class A5, class A6>
static init* create(signature6<A1, A2, A3, A4, A5, A6>) {
return new Init6<T,
return new init6<T,
detail::parameter_traits<A1>::const_reference,
detail::parameter_traits<A2>::const_reference,
detail::parameter_traits<A3>::const_reference,
@@ -176,7 +176,7 @@ struct init_function
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7>
static init* create(signature7<A1, A2, A3, A4, A5, A6, A7>) {
return new Init7<T,
return new init7<T,
detail::parameter_traits<A1>::const_reference,
detail::parameter_traits<A2>::const_reference,
detail::parameter_traits<A3>::const_reference,
@@ -188,7 +188,7 @@ struct init_function
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
static init* create(signature8<A1, A2, A3, A4, A5, A6, A7, A8>) {
return new Init8<T,
return new init8<T,
detail::parameter_traits<A1>::const_reference,
detail::parameter_traits<A2>::const_reference,
detail::parameter_traits<A3>::const_reference,
@@ -201,7 +201,7 @@ struct init_function
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
static init* create(signature9<A1, A2, A3, A4, A5, A6, A7, A8, A9>) {
return new Init9<T,
return new init9<T,
detail::parameter_traits<A1>::const_reference,
detail::parameter_traits<A2>::const_reference,
detail::parameter_traits<A3>::const_reference,
@@ -215,7 +215,7 @@ struct init_function
template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
static init* create(signature10<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10>) {
return new Init10<T,
return new init10<T,
detail::parameter_traits<A1>::const_reference,
detail::parameter_traits<A2>::const_reference,
detail::parameter_traits<A3>::const_reference,
@@ -353,7 +353,7 @@ struct init5 : init
};
template <class T, class A1, class A2, class A3, class A4, class A5, class A6>
struct Init6 : init
struct init6 : init
{
virtual instance_holder_base* create_holder(extension_instance* self, PyObject* args, PyObject* /*keywords*/) const
{
@@ -379,7 +379,7 @@ struct Init6 : init
};
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7>
struct Init7 : init
struct init7 : init
{
virtual instance_holder_base* create_holder(extension_instance* self, PyObject* args, PyObject* /*keywords*/) const
{
@@ -407,7 +407,7 @@ struct Init7 : init
};
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
struct Init8 : init
struct init8 : init
{
virtual instance_holder_base* create_holder(extension_instance* self, PyObject* args, PyObject* /*keywords*/) const
{
@@ -437,7 +437,7 @@ struct Init8 : init
};
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
struct Init9 : init
struct init9 : init
{
virtual instance_holder_base* create_holder(extension_instance* self, PyObject* args, PyObject* /*keywords*/) const
{
@@ -469,7 +469,7 @@ struct Init9 : init
};
template <class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
struct Init10 : init
struct init10 : init
{
virtual instance_holder_base* create_holder(extension_instance* self, PyObject* args, PyObject* /*keywords*/) const
{

View File

@@ -1,5 +1,30 @@
// (C) Copyright David Abrahams 2000. Permission to copy, use, modify, sell and
// distribute this software is granted provided this copyright notice appears
// in all copies. This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
// This file serves as a wrapper around <Python.h> which allows it to be
// compiled with GCC 2.95.2 under Win32 and which disables the default MSVC
// behavior so that a program may be compiled in debug mode without requiring a
// special debugging build of the Python library.
// To use the Python debugging library, #define BOOST_DEBUG_PYTHON on the
// compiler command-line.
// Revision History:
// 05 Mar 01 Suppress warnings under Cygwin with Python 2.0 (Dave Abrahams)
// 04 Mar 01 Rolled in some changes from the Dragon fork (Dave Abrahams)
// 01 Mar 01 define PyObject_INIT() for Python 1.x (Dave Abrahams)
#include <patchlevel.h>
#ifdef _DEBUG
# ifndef DEBUG_PYTHON
# ifndef BOOST_DEBUG_PYTHON
# undef _DEBUG // Don't let Python force the debug library just because we're debugging.
# define DEBUG_UNDEFINED_FROM_WRAP_PYTHON_H
# endif
@@ -16,9 +41,11 @@ typedef int pid_t;
# define WORD_BIT 32
# define hypot _hypot
# include <stdio.h>
# define HAVE_CLOCK
# define HAVE_STRFTIME
# define HAVE_STRERROR
# if !defined(PY_MAJOR_VERSION) || PY_MAJOR_VERSION < 2
# define HAVE_CLOCK
# define HAVE_STRFTIME
# define HAVE_STRERROR
# endif
# define NT_THREADS
# define WITH_THREAD
# ifndef NETSCAPE_PI
@@ -44,6 +71,8 @@ typedef int pid_t;
# define _MSC_VER 900
# endif
# elif defined(_MSC_VER)
# include <limits> // prevents Python.h from defining LONGLONG_MAX, LONGLONG_MIN, and ULONGLONG_MAX
# endif
#endif // _WIN32
@@ -59,3 +88,7 @@ typedef int pid_t;
# define _DEBUG
#endif
#if !defined(PY_MAJOR_VERSION) || PY_MAJOR_VERSION < 2
# define PyObject_INIT(op, typeobj) \
( (op)->ob_type = (typeobj), _Py_NewReference((PyObject *)(op)), (op) )
#endif

View File

@@ -18,11 +18,10 @@ namespace boost { namespace python {
class module_builder
{
typedef PyObject * (*raw_function_ptr)(boost::python::tuple const &, boost::python::dictionary const &);
public:
// Create a module. REQUIRES: only one module_builder is created per module.
module_builder(const char* name);
~module_builder();
// Add elements to the module
void add(detail::function* x, const char* name);
@@ -41,13 +40,29 @@ class module_builder
add(detail::new_wrapped_function(fn), name);
}
static string name();
// Return true iff a module is currently being built.
static bool initializing();
// Return the name of the module currently being built.
// REQUIRES: initializing() == true
static string name();
// Return a pointer to the Python module object being built
PyObject* module() const;
private:
PyObject* m_module;
static PyMethodDef initial_methods[1];
};
//
// inline implementations
//
inline PyObject* module_builder::module() const
{
return m_module;
}
}} // namespace boost::python
#endif

View File

@@ -1,15 +1,38 @@
// (C) Copyright Ullrich Koethe and David Abrahams 2000-2001. Permission to
// copy, use, modify, sell and distribute this software is granted provided
// this copyright notice appears in all copies. This software is provided "as
// is" without express or implied warranty, and with no claim as to its
// suitability for any purpose.
//
// The authors gratefully acknowlege the support of Dragon Systems, Inc., in
// producing this work.
//
// Revision History:
// 23 Jan 2001 - Another stupid typo fix by Ralf W. Grosse-Kunstleve (David Abrahams)
// 20 Jan 2001 - Added a fix from Ralf W. Grosse-Kunstleve (David Abrahams)
#ifndef OPERATORS_UK112000_H_
#define OPERATORS_UK112000_H_
#include <boost/python/detail/functions.hpp>
#if !defined(__GNUC__) || defined(__SGI_STL_PORT)
# include <sstream>
#else
# include <strstream>
#endif
# include <boost/python/reference.hpp>
# include <boost/python/detail/functions.hpp>
// When STLport is used with native streams, _STL::ostringstream().str() is not
// _STL::string, but std::string. This confuses to_python(), so we'll use
// strstream instead. Also, GCC 2.95.2 doesn't have sstream.
# if defined(__SGI_STL_PORT) ? defined(__SGI_STL_OWN_IOSTREAMS) : (!defined(__GNUC__) || __GNUC__ > 2)
# define BOOST_PYTHON_USE_SSTREAM
# endif
#if defined(BOOST_PYTHON_USE_SSTREAM)
# include <sstream>
# else
# include <strstream>
# endif
namespace boost { namespace python {
tuple standard_coerce(ref l, ref r);
namespace detail {
// helper class for automatic operand type detection
@@ -461,6 +484,16 @@ namespace detail
static const char * rname() { return "__rcmp__"; }
};
# ifndef BOOST_PYTHON_USE_SSTREAM
class unfreezer {
public:
unfreezer(std::ostrstream& s) : m_stream(s) {}
~unfreezer() { m_stream.freeze(false); }
private:
std::ostrstream& m_stream;
};
# endif
// str(): Manual specialization needed because the string conversion does not follow
// the standard pattern relized by the macros.
template <>
@@ -473,19 +506,18 @@ namespace detail
{
tuple args(ref(arguments, ref::increment_count));
#if !defined(__GNUC__) || defined(__SGI_STL_PORT)
// When STLport is used with native streams, _STL::ostringstream().str() is not
// _STL::string, but std::string.
# ifdef BOOST_PYTHON_USE_SSTREAM
std::ostringstream s;
s << BOOST_PYTHON_CONVERSION::from_python(args[0].get(), boost::python::type<operand>());
#else
return BOOST_PYTHON_CONVERSION::to_python(s.str());
# else
std::ostrstream s;
s << BOOST_PYTHON_CONVERSION::from_python(args[0].get(), boost::python::type<operand>()) << char();
#endif
#if !defined(__GNUC__) || defined(__SGI_STL_PORT)
return BOOST_PYTHON_CONVERSION::to_python(s.str());
#else
auto unfreezer unfreeze(s);
return BOOST_PYTHON_CONVERSION::to_python(const_cast<char const *>(s.str()));
#endif
# endif
}
const char* description() const
@@ -501,4 +533,5 @@ namespace detail
}} // namespace boost::python
# undef BOOST_PYTHON_USE_SSTREAM
#endif /* OPERATORS_UK112000_H_ */

217
release_notes.txt Normal file
View File

@@ -0,0 +1,217 @@
2000-11-22 10:00
Ullrich fixed bug in operator_dispatcher<op_long>.
2000-11-21 10:00
Changed all class and function names into lower_case.
Ullrich updated documentation for operator wrapping.
2000-11-20 10:00
Ullrich renamed ExtensionClass:register_coerce() into
ExtensionClass:def_standard_coerce() and made it public
Ullrich improved shared_pod_manager.
2000-11-17 15:04
Changed allocation strategy of shared_pod_manager to make it portable.
Added pickling support + tests thanks to "Ralf W. Grosse-Kunstleve"
<rwgk@cci.lbl.gov>
Added a specialization of Callback<const char*> to prevent unsafe usage.
Fixed Ullrich's operator_dispatcher refcount bug
Removed const char* return values from virtual functions in tests; that
usage was unsafe.
Ullrich changed Module::add() so that it steals a reference (fix of refcount bug)
Ullrich added operator_dispatcher::create() optimization
Ullrich changed design and implementation of TypeObjectBase::enable() (to eliminate low-level
code) and added shared_pod_manager optimization.
2000-11-15 12:01
Fixed refcount bugs in operator calls.
Added callback_adjust_refcount(PyObject*, Type<T>) to account for different ownership
semantics of Callback's return types and Caller's arguments (which both use from_python())
This bug caused refcount errors during operator calls.
Moved operator_dispatcher into extclass.cpp
Gave it shared ownership of the objects it wraps
Introduced sequence points in extension_class_coerce for exception-safety
UPPER_CASE_MACRO_NAMES
MixedCase template type argument names
Changed internal error reporting to use Python exceptions so we don't force the
user to link in iostreams code
Changed error return value of call_cmp to -1
Moved unwrap_* functions out of operator_dispatcher. This was transitional: when
I realized they didn't need to be declared in extclass.h I moved them out, but
now that operator_dispatcher itself is in extclass.cpp they could go back in.
Numerous formatting tweaks
Updated the BoundFunction::create() optimization and enabled it so it could actually be used!
2000-11-15 00:26
Made Ullrich's operators support work with MSVC
Cleaned up operators.h such that invalid define_operator<0> is no longer needed.
Ullrich created operators.h to support wrapping of C++ operators (including the "__r*__" forms).
He added several auxiliary classes to extclass.h and extclass.cpp (most importantly,
py::detail::operator_dispatcher and py::operators)
2000-11-13 22:29
removed obsolete ExtensionClassFromPython for good.
removed unused class ExtensionType forward declaration
2000-11-12 13:08
Added enum_as_int_converters for easier enum wrapping
Introduced new conversion namespace macros:
PY_BEGIN_CONVERSION_NAMESPACE,
PY_END_CONVERSION_NAMESPACE,
PY_CONVERSION
callback.h, gen_callback.py:
Added call() function so that a regular python function (as opposed to
method or other function-as-attribute) can be called.
Added newlines for readability.
class_wrapper.h:
Fixed a bug in add(), which allows non-method class attributes
Ullrich has added def_raw for simple varargs and keyword support.
Fixed version number check for __MWERKS__
Added tests for enums and non-method class attributes
objects.h/objects.cpp:
Added py::String operator*= and operator* for repetition
Change Dict::items(), keys(), and values() to return a List
Added template versions of set_item, etc., methods so that users can optionally
use C++ types that have to_python() functions as parameters.
Changed various Ptr by-value parameters to const Ptr&
======= Release =======
2000-11-06 0:22
Lots of documentation updates
added 4-argument template constructor to py::Tuple
added "add" member function to ClassWrapper<> to allow arbitrary Python
objects to be added to an extension class.
gen_all.py now generates support for n argument member functions and n+1
argument member functions at the suggestion of "Ralf W. Grosse-Kunstleve"
<rwgk@cci.lbl.gov>
Added regression tests and re-ordered declare_base calls to verify that the
phantom base class issue is resolved.
2000-11-04 17:35
Integrated Ullrich Koethe's brilliant from_python_experiment for better
error-reporting in many cases.
extclass.h, gen_extclass.py:
removed special-case MSVC code
added much commentary
removed unused py_copy_to_new_value_holder
init_function.h, gen_init_function.py:
added missing 'template' keyword on type-dependent template member usage
removed special-case MSVC code
added much commentary
2000-11-04 0:36
Removed the need for the phantom base class that screwed up inheritance
hierarchies, introduced error-prone ordering dependencies, and complexified
logic in many places!
extclass.h: Added some explanatory comments, removed wasteful m_self member
of HeldInstance
extclass_demo.cpp: Added #pragmas which allow compilation in ansi strict
mode under Metrowerks
functions.h: Added virtual_function as part of phantom base class removal;
expanded commentary
pyptr.h: Added some missing 'typename's and a GCC workaround fix
subclass.cpp: Added missing string literal const_cast<>s.
2000-11-03 10:58
Fix friend function instantiation bug caught by Metrowerks (thanks
Metrowerks!)
Add proof-of-concept for one technique of wrapping function that return a
pointer
Worked around MSVC optimizer bug by writing to_python(double) and
to_python(float) out-of-line
2000-11-02 23:25
Add /Zm200 option to vc6_prj to deal with MSVC resource limitations
Remove conflicting /Ot option from vc6_prj release build
======= Release =======
2000-11-02 17:42
Added a fix for interactions between default virtual function
implementations and declare_base(). You still need to write your
declare_base() /after/ all member functions have been def()d for the two
classes concerned. Many, many thanks to Ullrich Koethe
<koethe@informatik.uni-hamburg.de> for all his work on this.
Added missing conversions:
to_python(float)
from_python(const char* const&)
from_python(const double&)
from_python(const float&)
Added a Regression test for a reference-counting bug thanks to Mark Evans
(<mark.evans@clarisay.com>)
const-ify ClassBase::getattr()
Add repr() function to Class<T>
Add to_python/from_python conversions for PyPtr<T>
Standardize set_item/get_item interfaces (instead of proxies) for Dict and List
Add Reprable<> template to newtypes.h
Fix a bug wherein the __module__ attribute would be lost for classes that have a
default virtual function implementation.
Remove extra ';' in module.cpp thanks to "Ralf W. Grosse-Kunstleve"
<rwgk@cci.lbl.gov>
Fix a bug in the code of example1.html

View File

@@ -5,6 +5,11 @@
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
//
// Revision History:
// 04 Mar 01 Rolled in const_cast from Dragon fork (Dave Abrahams)
// 03 Mar 01 added: pickle safety measures (Ralf W. Grosse-Kunstleve)
// 03 Mar 01 bug fix: use bound_function::create() (instead of new bound_function)
#include <boost/python/classes.hpp>
#include <boost/python/detail/functions.hpp>
@@ -67,8 +72,7 @@ namespace {
ref global_class_reduce()
{
static ref result(detail::new_wrapped_function(class_reduce));
return result;
return ref(detail::new_wrapped_function(class_reduce));
}
@@ -93,17 +97,41 @@ namespace {
ref getstate(PyObject_GetAttrString(obj, const_cast<char*>("__getstate__")),
ref::null_ok);
PyErr_Clear();
ref dict(PyObject_GetAttrString(obj, const_cast<char*>("__dict__")), ref::null_ok);
PyErr_Clear();
if (getstate.get() != 0)
{
if (dict.get() != 0 && dictionary(dict).size() > 0)
{
ref getstate_manages_dict(PyObject_GetAttrString(instance_class.get(), const_cast<char*>("__getstate_manages_dict__")), ref::null_ok);
PyErr_Clear();
if (getstate_manages_dict.get() == 0)
{
PyErr_SetString(PyExc_RuntimeError, "Incomplete pickle support (__getstate_manages_dict__ not set)");
throw error_already_set();
}
}
ref state = ref(PyEval_CallObject(getstate.get(), NULL));
return tuple(instance_class, initargs, state);
}
ref state(PyObject_GetAttrString(obj, const_cast<char*>("__dict__")), ref::null_ok);
PyErr_Clear();
if (state.get() != 0 && dictionary(state).size() > 0)
if (getinitargs.get() == 0)
{
return tuple(instance_class, initargs, state);
ref dict_defines_state(PyObject_GetAttrString(instance_class.get(), const_cast<char*>("__dict_defines_state__")), ref::null_ok);
PyErr_Clear();
if (dict_defines_state.get() == 0)
{
PyErr_SetString(PyExc_RuntimeError, "Incomplete pickle support (__dict_defines_state__ not set)");
throw error_already_set();
}
}
if (dict.get() != 0 && dictionary(dict).size() > 0)
{
return tuple(instance_class, initargs, dict);
}
return tuple(instance_class, initargs);
@@ -111,8 +139,7 @@ namespace {
ref global_instance_reduce()
{
static ref result(detail::new_wrapped_function(instance_reduce));
return result;
return ref(detail::new_wrapped_function(instance_reduce));
}
}
@@ -177,7 +204,7 @@ namespace detail {
if (!BOOST_CSTD_::strcmp(name, "__reduce__"))
{
ref target(as_object(this), ref::increment_count);
return new bound_function(target, global_class_reduce());
return bound_function::create(target, global_class_reduce());
}
ref local_attribute = m_name_space.get_item(string(name).reference());
@@ -348,7 +375,7 @@ PyObject* instance::getattr(const char* name, bool use_special_function)
if (!BOOST_CSTD_::strcmp(name, "__reduce__"))
{
return new detail::bound_function(ref(this, ref::increment_count), global_instance_reduce());
return detail::bound_function::create(ref(this, ref::increment_count), global_instance_reduce());
}
ref local_attribute = m_name_space.get_item(string(name).reference());
@@ -840,7 +867,27 @@ namespace {
void add_current_module_name(dictionary& name_space)
{
static string module_key("__module__", string::interned);
name_space.set_item(module_key, module_builder::name());
// If the user didn't specify a __module__ attribute already
if (name_space.get_item(module_key).get() == 0)
{
if (module_builder::initializing())
{
// The global __name__ is not properly set in this case
name_space.set_item(module_key, module_builder::name());
}
else
{
// Get the module name from the global __name__
PyObject *globals = PyEval_GetGlobals();
if (globals != NULL)
{
PyObject *module_name = PyDict_GetItemString(globals, const_cast<char*>("__name__"));
if (module_name != NULL)
name_space.set_item(module_key, module_name);
}
}
}
}
}

View File

@@ -5,6 +5,13 @@
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
//
// Revision History:
// 05 Apr 01 added: from_python std::string type checking (rwgk)
// 12 Mar 01 Python 1.5.2 fixes (Ralf W. Grosse-Kunstleve)
// 11 Mar 01 std::string *MAY* include nulls (Alex Martelli)
// 04 Mar 01 std::complex<> fixes for MSVC (Dave Abrahams)
// 03 Mar 01 added: converters for [plain] char (Ralf W. Grosse-Kunstleve)
#include <boost/python/conversions.hpp>
#include <typeinfo>
@@ -44,6 +51,19 @@ void handle_exception()
}
}
namespace detail {
void expect_complex(PyObject* p)
{
if (!PyComplex_Check(p))
{
PyErr_SetString(PyExc_TypeError, "expected a complex number");
throw boost::python::argument_error();
}
}
} // namespace boost::python::detail
}} // namespace boost::python
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
@@ -132,7 +152,7 @@ int from_python(PyObject* p, boost::python::type<int> type)
PyObject* to_python(unsigned int i)
{
return integer_to_python(i);
return integer_to_python(i);
}
unsigned int from_python(PyObject* p, boost::python::type<unsigned int> type)
@@ -152,7 +172,7 @@ float from_python(PyObject* p, boost::python::type<float>)
PyObject* to_python(unsigned short i)
{
return integer_to_python(i);
return integer_to_python(i);
}
unsigned short from_python(PyObject* p, boost::python::type<unsigned short> type)
@@ -160,9 +180,27 @@ unsigned short from_python(PyObject* p, boost::python::type<unsigned short> type
return integer_from_python(p, type);
}
PyObject* to_python(char c)
{
if (c == '\0') return PyString_FromString("");
return PyString_FromStringAndSize(&c, 1);
}
char from_python(PyObject* p, boost::python::type<char>)
{
int l = -1;
if (PyString_Check(p)) l = PyString_Size(p);
if (l < 0 || l > 1) {
PyErr_SetString(PyExc_TypeError, "expected string of length 0 or 1");
throw boost::python::argument_error();
}
if (l == 0) return '\0';
return PyString_AsString(p)[0];
}
PyObject* to_python(unsigned char i)
{
return integer_to_python(i);
return integer_to_python(i);
}
unsigned char from_python(PyObject* p, boost::python::type<unsigned char> type)
@@ -172,7 +210,7 @@ unsigned char from_python(PyObject* p, boost::python::type<unsigned char> type)
PyObject* to_python(signed char i)
{
return integer_to_python(i);
return integer_to_python(i);
}
signed char from_python(PyObject* p, boost::python::type<signed char> type)
@@ -208,12 +246,16 @@ const char* from_python(PyObject* p, boost::python::type<const char*>)
PyObject* to_python(const std::string& s)
{
return PyString_FromString(s.c_str());
return PyString_FromStringAndSize(s.data(), s.size());
}
std::string from_python(PyObject* p, boost::python::type<std::string>)
{
return std::string(from_python(p, boost::python::type<const char*>()));
if (! PyString_Check(p)) {
PyErr_SetString(PyExc_TypeError, "expected a string");
throw boost::python::argument_error();
}
return std::string(PyString_AsString(p), PyString_Size(p));
}
bool from_python(PyObject* p, boost::python::type<bool>)

87
src/cross_module.cpp Normal file
View File

@@ -0,0 +1,87 @@
/* (C) Copyright Ralf W. Grosse-Kunstleve 2001. Permission to copy, use,
modify, sell and distribute this software is granted provided this
copyright notice appears in all copies. This software is provided
"as is" without express or implied warranty, and with no claim as to
its suitability for any purpose.
Revision History:
17 Apr 01 merged into boost CVS trunk (Ralf W. Grosse-Kunstleve)
*/
# include <boost/python/cross_module.hpp>
namespace python = boost::python;
# include <stdio.h> // MSVC6.0SP4 does not know std::fprintf
# include <string.h> // MSVC6.0SP4 does not know std::strcmp
namespace {
PyObject* get_module_dict(const char* module_name)
{
python::ref module_obj(PyImport_ImportModule((char*) module_name));
PyObject* module_dict = PyModule_GetDict(module_obj.get());
if (module_dict == 0) throw python::import_error();
return module_dict;
}
}
namespace boost { namespace python { namespace detail {
const char* converters_attribute_name = "__converters__";
void* import_converter_object(const std::string& module_name,
const std::string& py_class_name,
const std::string& attribute_name)
{
static std::string err;
PyObject* module_dict = get_module_dict(const_cast<char*>(module_name.c_str()));
PyObject* py_class = PyDict_GetItemString(module_dict, const_cast<char*>(py_class_name.c_str()));
if (py_class == 0) {
err = std::string("module ") + module_name + " has no attribute " + py_class_name;
PyErr_SetString(PyExc_RuntimeError, const_cast<char*>(err.c_str()));
throw python::import_error();
}
python::ref c_obj(PyObject_GetAttrString(py_class, const_cast<char*>(attribute_name.c_str())), ref::null_ok);
if (c_obj.get() == 0) {
err = std::string("object ") + module_name + "." + py_class_name
+ " has no attribute " + attribute_name;
PyErr_SetString(PyExc_RuntimeError, const_cast<char*>(err.c_str()));
throw python::import_error();
}
if (! PyCObject_Check(c_obj.get())) {
err = std::string("object ") + module_name + "." + py_class_name + "."
+ attribute_name + " is not a PyCObject";
PyErr_SetString(PyExc_RuntimeError, const_cast<char*>(err.c_str()));
throw python::import_error();
}
return PyCObject_AsVoidPtr(c_obj.get());
}
void check_export_converters_api(const int importing_major,
const int importing_minor,
const int imported_major,
const int imported_minor)
{
if (importing_major != imported_major) {
// Python uses fprintf(stderr, ...) for API warnings.
fprintf(stderr,
"Fatal: export_converters_api mismatch:"
" Importing module = %d.%d"
" Imported module = %d.%d\n",
importing_major, importing_minor,
imported_major, imported_minor);
PyErr_SetString(PyExc_RuntimeError,
"Fatal: export_converters_api mismatch");
throw import_error();
}
if (importing_minor != imported_minor) {
// Python uses fprintf(stderr, ...) for API warnings.
fprintf(stderr,
"Warning: export_converters_api mismatch:"
" Importing module = %d.%d"
" Imported module = %d.%d\n",
importing_major, importing_minor,
imported_major, imported_minor);
}
}
}}} // namespace boost::python::detail

View File

@@ -5,6 +5,9 @@
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
//
// Revision History:
// 04 Mar 01 Use PyObject_INIT() instead of trying to hand-initialize (David Abrahams)
#include <boost/python/detail/extension_class.hpp>
#include <cstring>
@@ -46,24 +49,19 @@ BOOST_PYTHON_END_CONVERSION_NAMESPACE
namespace boost { namespace python {
namespace detail {
tuple standard_coerce(ref l, ref r)
{
// Introduced sequence points for exception-safety.
ref first(detail::operator_dispatcher::create(l, l));
ref second(r->ob_type == &detail::operator_dispatcher::type_obj
? r
: ref(detail::operator_dispatcher::create(r, ref())));
tuple extension_class_coerce(ref l, ref r)
{
// Introduced sequence points for exception-safety.
ref first(operator_dispatcher::create(l, l));
ref second;
if(r->ob_type == &operator_dispatcher::type_obj)
{
second = r;
}
else
{
second = ref(operator_dispatcher::create(r, ref()));
}
return boost::python::tuple(first, second);
}
return tuple(first, second);
}
namespace detail {
enum { unwrap_exception_code = -1000 };
@@ -451,8 +449,8 @@ operator_dispatcher::operator_dispatcher(const ref& o, const ref& s)
: m_object(o), m_self(s), m_free_list_link(0)
{
ob_refcnt = 1;
ob_type = &type_obj;
PyObject* self = this;
PyObject_INIT(self, &type_obj);
}
operator_dispatcher*
@@ -465,7 +463,9 @@ operator_dispatcher::create(const ref& object, const ref& self)
free_list = result->m_free_list_link;
result->m_object = object;
result->m_self = self;
Py_INCREF(result);
PyObject* result_as_pyobject = result;
PyObject_INIT(result_as_pyobject, &type_obj);
return result;
}

View File

@@ -5,6 +5,9 @@
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
//
// Revision History:
// Mar 01 01 Use PyObject_INIT() instead of trying to hand-initialize (David Abrahams)
#include <boost/python/detail/functions.hpp>
#include <boost/python/detail/types.hpp>
@@ -97,19 +100,6 @@ PyObject* function::call(PyObject* args, PyObject* keywords) const
return 0;
}
bound_function* bound_function::create(const ref& target, const ref& fn)
{
bound_function* const result = free_list;
if (result == 0)
return new bound_function(target, fn);
free_list = result->m_free_list_link;
result->m_target = target;
result->m_unbound_function = fn;
Py_INCREF(result);
return result;
}
// The instance class whose obj represents the type of bound_function
// objects in Python. bound_functions must be GetAttrable so the __doc__
// attribute of built-in Python functions can be accessed when bound.
@@ -123,6 +113,21 @@ private: // type_object<bound_function> hook override
void dealloc(bound_function*) const;
};
bound_function* bound_function::create(const ref& target, const ref& fn)
{
bound_function* const result = free_list;
if (result == 0)
return new bound_function(target, fn);
free_list = result->m_free_list_link;
result->m_target = target;
result->m_unbound_function = fn;
PyObject* self = result;
PyObject_INIT(self, type_object::instance());
return result;
}
bound_function::bound_function(const ref& target, const ref& fn)
: python_object(type_object::instance()),
m_target(target),

View File

@@ -6,12 +6,12 @@ from gen_singleton import *
from gen_extclass import *
def gen_all(args):
open('callback.h', 'w').write(gen_callback(args))
open('caller.h', 'w').write(gen_caller(args))
open('init_function.h', 'w').write(gen_init_function(args))
open('signatures.h', 'w').write(gen_signatures(args))
open('instance.h', 'w').write(gen_singleton(args))
open('extclass.h', 'w').write(gen_extclass(args))
open('callback.hpp', 'w').write(gen_callback(args))
open('caller.hpp', 'w').write(gen_caller(args))
open('init_function.hpp', 'w').write(gen_init_function(args))
open('signatures.hpp', 'w').write(gen_signatures(args))
open('singleton.hpp', 'w').write(gen_singleton(args))
open('extension_class.hpp', 'w').write(gen_extclass(args))
if __name__ == '__main__':
import sys

View File

@@ -14,6 +14,10 @@ def gen_extclass(args):
// This file automatically generated for %d-argument constructors by
// gen_extclass.python
// Revision History:
// 05 Mar 01 Fixed a bug which prevented auto_ptr values from being converted
// to_python (Dave Abrahams)
#ifndef EXTENSION_CLASS_DWA052000_H_
# define EXTENSION_CLASS_DWA052000_H_
@@ -27,6 +31,7 @@ def gen_extclass(args):
# include <boost/python/detail/init_function.hpp>
# include <typeinfo>
# include <boost/smart_ptr.hpp>
# include <boost/type_traits.hpp>
namespace boost { namespace python {
@@ -66,7 +71,7 @@ T* check_non_null(T* p)
return p;
}
template <class T> class held_instance;
template <class Held> class held_instance;
typedef void* (*conversion_function_ptr)(void*);
@@ -138,6 +143,26 @@ class class_registry
static std::vector<derived_class_info> static_derived_class_info;
};
template <bool is_pointer>
struct is_null_helper
{
template <class Ptr>
static bool test(Ptr x) { return x == 0; }
};
template <>
struct is_null_helper<false>
{
template <class Ptr>
static bool test(const Ptr& x) { return x.get() == 0; }
};
template <class Ptr>
bool is_null(const Ptr& x)
{
return is_null_helper<(is_pointer<Ptr>::value)>::test(x);
}
}}} // namespace boost::python::detail
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
@@ -183,9 +208,9 @@ class python_extension_class_converters
new boost::python::detail::instance_value_holder<T,U>(result.get(), x)));
return result.release();
}
// Convert to T*
friend T* from_python(PyObject* obj, boost::python::type<T*>)
friend
T* non_null_from_python(PyObject* obj, boost::python::type<T*>)
{
// downcast to an extension_instance, then find the actual T
boost::python::detail::extension_instance* self = boost::python::detail::get_extension_instance(obj);
@@ -206,9 +231,18 @@ class python_extension_class_converters
throw boost::python::argument_error();
}
// Convert to PtrType, where PtrType can be dereferenced to obtain a T.
// Convert to T*
friend T* from_python(PyObject* obj, boost::python::type<T*>)
{
if (obj == Py_None)
return 0;
else
return non_null_from_python(obj, boost::python::type<T*>());
}
// Extract from obj a mutable reference to the PtrType object which is holding a T.
template <class PtrType>
static PtrType& ptr_from_python(PyObject* obj, boost::python::type<PtrType>)
static PtrType& smart_ptr_reference(PyObject* obj, boost::python::type<PtrType>)
{
// downcast to an extension_instance, then find the actual T
boost::python::detail::extension_instance* self = boost::python::detail::get_extension_instance(obj);
@@ -225,9 +259,29 @@ class python_extension_class_converters
throw boost::python::argument_error();
}
// Extract from obj a reference to the PtrType object which is holding a
// T. If it weren't for auto_ptr, it would be a constant reference. Do not
// modify the referent except by copying an auto_ptr! If obj is None, the
// reference denotes a default-constructed PtrType
template <class PtrType>
static PyObject* ptr_to_python(PtrType x)
static PtrType& smart_ptr_value(PyObject* obj, boost::python::type<PtrType>)
{
if (obj == Py_None)
{
static PtrType null_ptr;
return null_ptr;
}
return smart_ptr_reference(obj, boost::python::type<PtrType>());
}
template <class PtrType>
static PyObject* smart_ptr_to_python(PtrType x)
{
if (boost::python::detail::is_null(x))
{
return boost::python::detail::none();
}
boost::python::reference<boost::python::detail::extension_instance> result(create_instance());
result->add_implementation(
std::auto_ptr<boost::python::detail::instance_holder_base>(
@@ -259,7 +313,7 @@ class python_extension_class_converters
// Convert to T&
friend T& from_python(PyObject* p, boost::python::type<T&>)
{ return *boost::python::detail::check_non_null(from_python(p, boost::python::type<T*>())); }
{ return *boost::python::detail::check_non_null(non_null_from_python(p, boost::python::type<T*>())); }
// Convert to const T&
friend const T& from_python(PyObject* p, boost::python::type<const T&>)
@@ -270,28 +324,28 @@ class python_extension_class_converters
{ return from_python(p, boost::python::type<T&>()); }
friend std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<std::auto_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<std::auto_ptr<T> >()); }
{ return smart_ptr_reference(p, boost::python::type<std::auto_ptr<T> >()); }
friend std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<std::auto_ptr<T> >)
{ return ptr_from_python(p, boost::python::type<std::auto_ptr<T> >()); }
friend std::auto_ptr<T> from_python(PyObject* p, boost::python::type<std::auto_ptr<T> >)
{ return smart_ptr_value(p, boost::python::type<std::auto_ptr<T> >()); }
friend const std::auto_ptr<T>& from_python(PyObject* p, boost::python::type<const std::auto_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<std::auto_ptr<T> >()); }
{ return smart_ptr_value(p, boost::python::type<std::auto_ptr<T> >()); }
friend PyObject* to_python(std::auto_ptr<T> x)
{ return ptr_to_python(x); }
{ return smart_ptr_to_python(x); }
friend boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<boost::shared_ptr<T> >()); }
{ return smart_ptr_reference(p, boost::python::type<boost::shared_ptr<T> >()); }
friend boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T> >)
{ return ptr_from_python(p, boost::python::type<boost::shared_ptr<T> >()); }
friend const boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<boost::shared_ptr<T> >)
{ return smart_ptr_value(p, boost::python::type<boost::shared_ptr<T> >()); }
friend const boost::shared_ptr<T>& from_python(PyObject* p, boost::python::type<const boost::shared_ptr<T>&>)
{ return ptr_from_python(p, boost::python::type<boost::shared_ptr<T> >()); }
{ return smart_ptr_value(p, boost::python::type<boost::shared_ptr<T> >()); }
friend PyObject* to_python(boost::shared_ptr<T> x)
{ return ptr_to_python(x); }
{ return smart_ptr_to_python(x); }
};
// Convert T to_python, instantiated on demand and only if there isn't a
@@ -613,15 +667,15 @@ class extension_class
// A simple wrapper over a T which allows us to use extension_class<T> with a
// single template parameter only. See extension_class<T>, above.
template <class T>
class held_instance : public T
template <class Held>
class held_instance : public Held
{
// There are no member functions: we want to avoid inadvertently overriding
// any virtual functions in T.
// any virtual functions in Held.
public:"""
+ gen_functions("""%{
template <%(class A%n%:, %)>%}
held_instance(PyObject*%(, A%n% a%n%)) : T(%(a%n%:, %)) {}""", args)
held_instance(PyObject*%(, A%n% a%n%)) : Held(%(a%n%:, %)) {}""", args)
+ """
};
@@ -707,8 +761,6 @@ class extension_instance : public instance
// Template function implementations
//
tuple extension_class_coerce(ref l, ref r);
template <class T, class U>
extension_class<T, U>::extension_class()
: extension_class_base(typeid(T).name())
@@ -729,7 +781,7 @@ void extension_class<T, U>::def_standard_coerce()
ref coerce_fct = dict().get_item(string("__coerce__"));
if(coerce_fct.get() == 0) // not yet defined
this->def(&extension_class_coerce, "__coerce__");
this->def(&standard_coerce, "__coerce__");
}
template <class T, class U>

View File

@@ -14,10 +14,15 @@ namespace {
ref name_holder;
}
bool module_builder::initializing()
{
return name_holder.get() != 0;
}
string module_builder::name()
{
// If this fails, you haven't created a module_builder object
assert(name_holder.get() != 0);
assert(initializing());
return string(name_holder);
}
@@ -29,6 +34,11 @@ module_builder::module_builder(const char* name)
name_holder = ref(PyObject_GetAttrString(m_module, const_cast<char*>("__name__")));
}
module_builder::~module_builder()
{
name_holder.reset();
}
void
module_builder::add(detail::function* x, const char* name)
{

View File

@@ -5,13 +5,21 @@
//
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
// Revision History:
// 04 Mar 01 Changed name of extension module so it would work with DebugPython,
// eliminated useless test that aggravated MSVC (David Abrahams)
#include "comprehensive.hpp"
#include <boost/python/class_builder.hpp>
#include <stdio.h> // used for portability on broken compilers
#include <math.h> // for pow()
#include <boost/rational.hpp>
namespace extclass_demo {
#if defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 730
inline double pow(int x, int y) { return pow(static_cast<double>(x), y); }
#endif
namespace bpl_test {
FooCallback::FooCallback(PyObject* self, int x)
: Foo(x), m_self(self)
@@ -238,6 +246,23 @@ boost::shared_ptr<Foo> Baz::create_foo()
return boost::shared_ptr<Foo>(new DerivedFromFoo(0));
}
// Used to check conversion to None
boost::shared_ptr<Foo> foo_factory(bool create)
{
return boost::shared_ptr<Foo>(create ? new DerivedFromFoo(0) : 0);
}
// Used to check conversion from None
bool foo_ptr_is_null(Foo* p)
{
return p == 0;
}
bool foo_shared_ptr_is_null(boost::shared_ptr<Foo> p)
{
return p.get() == 0;
}
// We can accept smart pointer parameters
int Baz::get_foo_value(boost::shared_ptr<Foo> foo)
{
@@ -404,7 +429,7 @@ static int testUpcast(Base* b)
static std::auto_ptr<Base> derived1Factory(int i)
{
return std::auto_ptr<Base>(new Derived1(i));
return std::auto_ptr<Base>(i < 0 ? 0 : new Derived1(i));
}
static std::auto_ptr<Base> derived2Factory(int i)
@@ -714,12 +739,14 @@ const Record* get_record()
return &v;
}
template class boost::python::class_builder<Record>; // explicitly instantiate
} // namespace bpl_test
} // namespace extclass_demo
namespace boost { namespace python {
template class class_builder<bpl_test::Record>; // explicitly instantiate
}} // namespace boost::python
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
inline PyObject* to_python(const extclass_demo::Record* p)
inline PyObject* to_python(const bpl_test::Record* p)
{
return to_python(*p);
}
@@ -731,7 +758,7 @@ BOOST_PYTHON_END_CONVERSION_NAMESPACE
/* */
/************************************************************/
namespace extclass_demo {
namespace bpl_test {
struct EnumOwner
{
@@ -753,8 +780,8 @@ struct EnumOwner
}
namespace boost { namespace python {
template class enum_as_int_converters<extclass_demo::EnumOwner::enum_type>;
using extclass_demo::pow;
template class enum_as_int_converters<bpl_test::EnumOwner::enum_type>;
using bpl_test::pow;
}} // namespace boost::python
// This is just a way of getting the converters instantiated
@@ -763,7 +790,7 @@ namespace boost { namespace python {
//{
//};
namespace extclass_demo {
namespace bpl_test {
/************************************************************/
/* */
@@ -813,6 +840,32 @@ namespace extclass_demo {
w.set_secret_number(number);
}
// Test plain char converters.
char get_plain_char() { return 'x'; }
std::string use_plain_char(char c) { return std::string(3, c); }
// This doesn't test anything but the compiler, since it has the same signature as the above.
// Since MSVC is broken and gets the signature wrong, we'll skip it.
std::string use_const_plain_char(
#ifndef BOOST_MSVC6_OR_EARLIER
const
#endif
char c) { return std::string(5, c); }
// Test std::complex<double> converters.
std::complex<double> dpolar(double rho, double theta) {
return std::polar(rho, theta);
}
double dreal(const std::complex<double>& c) { return c.real(); }
double dimag(std::complex<double> c) { return c.imag(); }
// Test std::complex<float> converters.
std::complex<float> fpolar(float rho, float theta) {
return std::polar(rho, theta);
}
double freal(const std::complex<float>& c) { return c.real(); }
double fimag(std::complex<float> c) { return c.imag(); }
/************************************************************/
/* */
/* init the module */
@@ -1034,9 +1087,29 @@ void init_module(boost::python::module_builder& m)
world_class.def(world_getinitargs, "__getinitargs__");
world_class.def(world_getstate, "__getstate__");
world_class.def(world_setstate, "__setstate__");
// Test plain char converters.
m.def(get_plain_char, "get_plain_char");
m.def(use_plain_char, "use_plain_char");
m.def(use_const_plain_char, "use_const_plain_char");
// Test std::complex<double> converters.
m.def(dpolar, "dpolar");
m.def(dreal, "dreal");
m.def(dimag, "dimag");
// Test std::complex<float> converters.
m.def(fpolar, "fpolar");
m.def(freal, "freal");
m.def(fimag, "fimag");
// Test new null-pointer<->None conversions
m.def(foo_factory, "foo_factory");
m.def(foo_ptr_is_null, "foo_ptr_is_null");
m.def(foo_shared_ptr_is_null, "foo_shared_ptr_is_null");
}
PyObject* raw(boost::python::tuple const& args, boost::python::dictionary const& keywords)
PyObject* raw(const boost::python::tuple& args, const boost::python::dictionary& keywords)
{
if(args.size() != 2 || keywords.size() != 2)
{
@@ -1055,21 +1128,17 @@ PyObject* raw(boost::python::tuple const& args, boost::python::dictionary const&
void init_module()
{
boost::python::module_builder demo("demo");
init_module(demo);
boost::python::module_builder boost_python_test("boost_python_test");
init_module(boost_python_test);
// Just for giggles, add a raw metaclass.
demo.add(new boost::python::meta_class<boost::python::instance>);
boost_python_test.add(new boost::python::meta_class<boost::python::instance>);
}
extern "C"
#ifdef _WIN32
__declspec(dllexport)
#endif
void initdemo()
BOOST_PYTHON_MODULE_INIT(boost_python_test)
{
try {
extclass_demo::init_module();
bpl_test::init_module();
}
catch(...) {
boost::python::handle_exception();
@@ -1083,7 +1152,7 @@ CompareIntPairPythonClass::CompareIntPairPythonClass(boost::python::module_build
def(&CompareIntPair::operator(), "__call__");
}
} // namespace extclass_demo
} // namespace bpl_test
#if defined(_WIN32)
@@ -1124,7 +1193,7 @@ BOOL WINAPI DllMain(
switch(fdwReason)
{
case DLL_PROCESS_DETACH:
assert(extclass_demo::total_Ints == 0);
assert(bpl_test::total_Ints == 0);
}
#endif

View File

@@ -6,8 +6,8 @@
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
#ifndef EXTCLASS_DEMO_DWA052200_H_
# define EXTCLASS_DEMO_DWA052200_H_
#ifndef BPL_TEST_DWA052200_H_
# define BPL_TEST_DWA052200_H_
//
// Example code demonstrating extension class usage
//
@@ -21,7 +21,7 @@
# include <string>
# include <map>
namespace extclass_demo {
namespace bpl_test {
//
// example: Foo, Bar, and Baz are C++ classes we want to wrap.
@@ -226,6 +226,6 @@ struct CompareIntPairPythonClass
CompareIntPairPythonClass(boost::python::module_builder&);
};
} // namespace extclass_demo
} // namespace bpl_test
#endif // EXTCLASS_DEMO_DWA052200_H_
#endif // BPL_TEST_DWA052200_H_

View File

@@ -7,6 +7,15 @@ r'''
// The author gratefully acknowleges the support of Dragon Systems, Inc., in
// producing this work.
// Revision History:
// 04 Mar 01 Changed name of extension module so it would work with DebugPython,
// fixed exception message checking to work with Python 2.0
// (Dave Abrahams)
Load up the extension module
>>> from boost_python_test import *
Automatic checking of the number and type of arguments. Foo's constructor takes
a single long parameter.
@@ -17,9 +26,9 @@ a single long parameter.
>>> try: ext = Foo('foo')
... except TypeError, err:
... assert re.match(
... '(illegal argument type for built-in operation)|(an integer is required)', str(err))
... else: print 'no exception'
... assert_integer_expected(err)
... else:
... print 'no exception'
>>> ext = Foo(1)
@@ -64,6 +73,21 @@ We can subclass Foo.
>>> b.call_pure()
'not pure anymore!'
None corresponds to a NULL pointer or smart pointer
>>> f = foo_factory(1)
>>> f.add_len('xxx')
1000
>>> foo_factory(0) is None
1
>>> foo_ptr_is_null(None)
1
>>> foo_ptr_is_null(f)
0
>>> foo_shared_ptr_is_null(None)
1
>>> foo_shared_ptr_is_null(f)
0
If no __init__ function is defined, the one from the base class takes effect, just
like in a Python class.
@@ -209,7 +233,7 @@ Polymorphism also works:
Pickling tests:
>>> world.__module__
'demo'
'boost_python_test'
>>> world.__safe_for_unpickling__
1
>>> world.__reduce__()
@@ -239,6 +263,47 @@ Pickling tests:
Hello from California! 42
Hello from California! 0
Pickle safety measures:
>>> r=Rational(3, 4)
>>> r
Rational(3, 4)
>>> try: s=pickle.dumps(r)
... except RuntimeError, err: print err[0]
...
Incomplete pickle support (__dict_defines_state__ not set)
>>> class myrational(Rational):
... __dict_defines_state__ = 1 # this is a lie but good enough for testing.
...
>>> r=myrational(3, 4)
>>> r
Rational(3, 4)
>>> s=pickle.dumps(r)
>>> class myworld(world):
... def __init__(self):
... world.__init__(self, 'anywhere')
... self.x = 1
...
>>> w = myworld()
>>> w.greet()
'Hello from anywhere!'
>>> w.__dict__
{'x': 1}
>>> try: s=pickle.dumps(w)
... except RuntimeError, err: print err[0]
...
Incomplete pickle support (__getstate_manages_dict__ not set)
>>> class myunsafeworld(myworld):
... __getstate_manages_dict__ = 1 # this is a lie but good enough for testing.
...
>>> w = myunsafeworld()
>>> w.greet()
'Hello from anywhere!'
>>> w.__dict__
{'x': 1}
>>> s=pickle.dumps(w)
Special member attributes. Tests courtesy of Barry Scott <barry@scottb.demon.co.uk>
>>> class DerivedFromFoo(Foo):
@@ -656,10 +721,11 @@ Testing interaction between callbacks, base declarations, and overloading
>>> c = CallbackTest()
>>> c.testCallback(1)
2
>>> c.testCallback('foo')
Traceback (innermost last):
File "<stdin>", line 1, in ?
TypeError: illegal argument type for built-in operation
>>> try: c.testCallback('foo')
... except TypeError, err: assert_integer_expected(err)
... else: print 'no exception'
>>> c.callback(1)
2
>>> c.callback('foo')
@@ -678,10 +744,11 @@ Testing interaction between callbacks, base declarations, and overloading
-1
>>> r.callback('foo')
'foo 1'
>>> r.testCallback('foo')
Traceback (innermost last):
File "<stdin>", line 1, in ?
TypeError: illegal argument type for built-in operation
>>> try: r.testCallback('foo')
... except TypeError, err: assert_integer_expected(err)
... else: print 'no exception'
>>> r.testCallback(1)
-1
>>> testCallback(r, 1)
@@ -1070,9 +1137,49 @@ test methodologies for wrapping functions that return a pointer
3
>>> eo.second
1
'''
from demo import *
======== test [plain] char converters ==============
>>> get_plain_char()
'x'
>>> use_plain_char('a')
'aaa'
>>> use_const_plain_char('b')
'bbbbb'
======== test std::complex converters ==============
>>> c = dpolar(3, 5)
>>> type(c)
<type 'complex'>
>>> '%.3g' % (dreal(c))
'0.851'
>>> '%.3g' % (dimag(c))
'-2.88'
>>> '%.3g' % (freal(c))
'0.851'
>>> '%.3g' % (fimag(c))
'-2.88'
>>> c = fpolar(7, 13)
>>> type(c)
<type 'complex'>
>>> '%.3g' % (fimag(c))
'2.94'
>>> '%.3g' % (freal(c))
'6.35'
>>> '%.3g' % (dimag(c))
'2.94'
>>> '%.3g' % (dreal(c))
'6.35'
'''
#'
def assert_integer_expected(err):
"""Handle a common error report which appears differently in Python 1.5.x and 2.0"""
assert isinstance(err, TypeError)
message = str(err)
assert (message == "illegal argument type for built-in operation"
or message == "an integer is required")
import string
import re
import sys
@@ -1080,8 +1187,8 @@ import sys
def run(args = None):
if args is not None:
sys.argv = args
import doctest, test_extclass
doctest.testmod(test_extclass)
import doctest, comprehensive
doctest.testmod(comprehensive)
if __name__ == '__main__':
run()

1112
test/doctest.py Normal file

File diff suppressed because it is too large Load Diff

426
todo.txt Normal file
View File

@@ -0,0 +1,426 @@
Check for const reference parameters in all from_python functions in py.h, including implementations.
Better python and C++ exception handling/error reporting.
long long support
use Python generic numeric coercion in from_python() for C++ numeric types
Rename PyPtr to Reference.
Report Cygwin linker memory issues
__init__ stuff
Make abstract classes non-instantiable (?)
Call default __init__ functions automatically where applicable (?)
Support for Python LONG types in Objects.h
Throw TypeError after asserting when objects from objects.cpp detect a type mismatch.
Figure out how to package everything as a shared library.
Unicode string support
Add read-only wrapper for __dict__ attribute
Objects.h support for generic objects, Sequence objects, etc.
empty() member functions for objects.hpp
Testing
Python 2.0
object revival in __del__
More thorough tests of objects.h/cpp classes
Better reference-count checking
Optimizations
Remove one level of indirection on type objects (no vtbl?).
Specializations of Caller<> for commmon combinations of argument types (?)
Replace uses of XXXable classes
Don't allocate instance __dict__ unless used.
Documentation:
differences between Python classes and ExtensionClasses
additional capabilities of ExtensionClasses
slice adjustment
Why special attributes other than __doc__ and __name__ are immutable.
An example of the problems with the built-in Python classes.
>>> class A:
... def __getattr__(self, name):
... return 'A.__getattr__'
...
>>> class B(A): pass
...
>>> class C(B): pass
...
>>> C().x
'A.__getattr__'
>>> B.__bases__ = ()
>>> C().x
'A.__getattr__'
Smart pointers
#ifndef PY_NO_INLINE_FRIENDS_IN_NAMESPACE
namespace py {
#endif
template <class T>
struct VtkConverters
{
typedef py::PyExtensionClassConverters<T> Converters;
friend vtk_ptr<T>& from_python(PyObject* p, py::Type<vtk_ptr<T>&>)
{ return Converters::ptr_from_python(p, py::Type<vtk_ptr<T> >()); }
friend vtk_ptr<T>& from_python(PyObject* p, py::Type<vtk_ptr<T> >)
{ return Converters::ptr_from_python(p, py::Type<vtk_ptr<T> >()); }
friend const vtk_ptr<T>& from_python(PyObject* p, py::Type<const vtk_ptr<T>&>)
{ return Converters::ptr_from_python(p, py::Type<vtk_ptr<T> >()); }
friend PyObject* to_python(vtk_ptr<T> x)
{ return Converters::ptr_to_python(x); }
};
#ifndef PY_NO_INLINE_FRIENDS_IN_NAMESPACE
}
#endif
template <class T>
struct VtkWrapper : py::ClassWrapper<T>, py::VtkConverters<T>
{
typedef py::ClassWrapper<T> Base;
VtkWrapper(Module& module, const char* name)
: Base(module, name) {}
};
exception handling
Advanced Topics:
Advanced Type Conversion
adding conversions for fundamental types
generic conversions for template types (with partial spec).
Interacting with built-in Python objects and types from C++
dealing with non-const reference/pointer parameters
extending multiple-argument support using gen_all.py
Fancy wrapping tricks
templates
Yes. If you look at the examples in extclass_demo.cpp you'll see that I have
exposed several template instantiations (e.g. std::pair<int,int>) in Python.
Keep in mind, however, that you can only expose a template instantiation,
not a template. In other words, MyTemplate<Foo> can be exposed. MyTemplate
itself cannot.
Well, that's not strictly true. Wow, this is more complicated to explain
than I thought.
You can't make an ExtensionClass<MyTemplate>, since after all MyTemplate is
not a type. You can only expose a concrete type to Python.
What you *can* do (if your compiler supports partial ordering of function
templates - MSVC is broken and does not) is to write appropriate
from_python() and to_python() functions for converting a whole class of
template instantiations to/from Python. That won't let you create an
instance of MyTemplate<SomePythonType> from Python, but it will let you
pass/return arbitrary MyTemplate<SomeCplusplusType> instances to/from your
wrapped C++ functions.
template <class T>
MyTemplate<T> from_python(PyObject* x, py::Type<MyTemplate<T> >)
{
// code to convert x into a MyTemplate<T>... that part is up to you
}
template <class T>
PyObject* from_python(const MyTemplate<T>&)
{
// code to convert MyTemplate<T> into a PyObject*... that part is up to
you
}
For example, you could use this to convert Python lists to/from
std::vector<T> automatically.
Pointer return values
Case 1:
> I am now also able to wrap the problematic TextRecordIterator for Python.
> However, one of its function compiles with this warning:
>
> d:\py_cpp/caller.h(33) : warning C4800: 'const class Record *const '
> : forcing value to bool 'true' or 'false' (performance warning)
> d:\py_cpp/functions.h(54) : see reference to function template
> instantiation 'struct _object *__cdecl py::Caller::call(const class Record
> *const (__thiscall TextRecordIterator::*)(void),struct _object *,struct
> _object *)' being compiled
>
> If you look at the offending code, you'll see that we really do need to
> get back that pointer:
>
> const Record* const TextRecordIterator::Next() {
> if (fStatus != RecordIterator::SUCCESS) {
> return 0;
> } else {
> return &fData;
> }
> }
>
> The point of the TextRecordIterator is to hand over one reord after
> another. A bool wouldn't do us much good here :-)
>
> Do you have any suggestions for fixing this?
In general, py_cpp doesn't automatically convert pointer return values
to_python because pointers have too many potential meanings. Is it an
iterator? A pointer to a single element? An array? Is ownership being passed
to Python or is the pointer really just a reference? If the latter, what
happens when some C++ code deletes the referent. The only exception to this
rule is const char*, since it has a generally accepted interpretation (could
be trouble with some generic code, though!)
If you have wrapped the Record class, you could add this to namespace py:
PyObject* to_python(const Record* p) {
return to_python(*p);
}
Of course, this will cause the Record class to be copied. If you can't live
with that (Record would have to be /really/ heavyweight to make this
worthwhile), you can follow one of these dangerous approaches:
1. Use the technique I described with dangerous_array in
http://www.egroups.com/message/boost/6196. You do not have to expose Record
explicitly in this case. Instead the class you expose will be more of a
Record_proxy
2. Wrap Record in the usual way, then add the following to namespace py:
PyObject* to_python(const Record* p)
{
return ExtensionClass<Record>::ptr_to_python(const_cast<Record*>(p));
}
This will cause the Record* to be treated as though it were an owning smart
pointer, even though it's not. Be sure you don't use the reference for
anything from Python once the pointer becomes invalid, though. Don't worry
too much about the const-correctness issue: Const-correctness is completely
lost to Python anyway!
3. As above, but instead wrap const Record rather than plain Record. Then
you can avoid the const_cast, but you obviously can't def() any non-const
member functions of Record.
Case 2:
> I have yet another question. This is more a general wrapper question.
> Let me say that there is a function that returns a float* which most
> probably is an array. Similarly if I have a function that takes a
> float* as an argument, what is the best way of wrapping this?
I think you have correctly perceived that it doesn't make sense for me to
automatically convert all pointers, since the ownership semantics are so
blurry.
> 1) If the array is small it makes sense to convert it to either a
> tuple or list. What is the easiest way to do this?? I am looking
> for a way that makes one write the least code. :)
How can you tell the length of the array from a single pointer?
Once you've answered that question, you can expose a wrapper function which
returns an instance of the py::Tuple or py::List class from objects.h. If
you are using a List, for example, you could write something like this:
py::List wrap_f()
{
T* start = f();
py::List x;
for (T* p = start; p != start + length_constant; ++p)
x.push_back(py::to_python(*p));
return x;
}
> 2) If the array is large it may not make sense to use a list/tuple
> esp. if the values are used for computationally intense programs.
In this case you can do one of several somewhat dangerous things. Why
dangerous? Because python can not control the lifetime of the data, so the
data in the array may be destroyed or become invalid before the last
reference to it disappears. The basic approach is to make a small C++ class
which contains the pointer, and expose that:
// UNTESTED
template <class T>
struct dangerous_array
{
dangerous_array(T* start, T* end)
: m_start(start), m_end(end) {}
// exposed as "__len__"
std::size_t length() {
return m_end - m_start;
}
// exposed as "__getitem__"
T get_item(std::size_t n) {
check_range(n);
return start[n];
}
// exposed as "__setitem__" if the array is mutable
void set_item(std::size_t n, const T& x) {
check_range(n);
start[n] = x;
}
private:
void check_range(std::size_t n) {
if (n >= m_end - m_start) {
PyErr_SetString(PyExc_IndexError, "array index out of range");
throw py::ErrorAlreadySet;
}
}
T* m_start;
T* m_end;
};
A reasonably safe approach would be to make a wrapper function for each
function that returns a T*, and expose that instead. If you're too lazy and
you really like to live on the edge, though, you can write to_python(T*) in
terms of to_python(const dangerous_array<T>&), and you'll automatically
convert all T* return values to a wrapped dangerous_array.
> 3) For an arbitrary class "class_A", say, can py_cpp handle
> references to class_A &instance, or class_A *instance?? i.e. will it
> wrap function calls to such objects? This question is obviously
> related to the earlier questions.
Yes, iff class_A has been exposed to python with a ClassWrapper<class_A>.
See http://people.ne.mediaone.net/abrahams/downloads/under-the-hood.html for
a few details.
raw C++ arrays
You could expose a function like this one to get the desired effect:
#include <py_cpp/objects.h>
void set_len(UnitCell& x, py::Tuple tuple)
{
double len[3];
for (std::size_t i =0; i < 3; ++i)
len[i] = py::from_python(tuple[i].get(), py::Type<double>());
x.set_len(len);
}
Types that are already wrapped by other libraries
It's not documented yet, but you should be able to use a raw PyObject* or a
py::Ptr as one parameter to your C++ function. Then you can manipulate it as
any other generic Python object.
Alternatively, If the NTL gives you a C/C++ interface, you can also write
your own converter function:
some_ntl_type& from_python(PyObject* p, py::Type<some_NTL_type&>)
{
// an Example implementation. Basically, you need
// to extract the NTL type from the PyObject*.
if (p->ob_type != NTL_long_type) {
PyErr_SetString(PyExc_TypeErr, "NTL long required");
throw py::ArgumentError();
}
return *static_cast<some_NTL_type*>(p);
}
then the C++ functions you're wrapping can take a some_NTL_type& parameter
directly.
"Thin converting wrappers" for constructors
hijack some of the functionality
described in the section on Overridable Virtual Functions (even though you
don't have any virtual functions). I suggest this workaround:
struct UnitCellWrapper : UnitCell
{
UnitCellWrapper(PyObject* self, py::Tuple x, py::Tuple y)
: UnitCell(from_python(x[1], py::Type<double>()),
from_python(x[2], py::Type<double>()),
from_python(x[3], py::Type<double>()),
from_python(y[1], py::Type<double>()),
from_python(y[2], py::Type<double>()),
from_python(y[3], py::Type<double>()))
{}
}
py::ClassWrapper<UnitCell, UnitCellWrapper> unit_cell_class;
unit_cell_class.def(py::Constructor<py::Tuple, py::Tuple>());
...
returning references to wrapped objects
the importance of declaration order of ClassWrappers/ExtensionInstances
out parameters and non-const pointers
Calling back into Python:
// caveat: UNTESTED!
#include <py_cpp/pyptr.h>
#include <py_cpp/callback.h>
#include <py_cpp/py.h>
#include <Python.h>
int main()
{
try {
py::Ptr module(PyImport_ImportModule("weapons"));
const int strength = 10;
const char* manufacturer = "Vordon Empire";
py::Ptr a_blaster(py::Callback<py::Ptr>::call_method(
module.get(), "Blaster", strength, manufacturer));
py::Callback<void>::call_method(a_blaster.get(), "Fire");
int old_strength = py::Callback<int>::call_method(a_blaster.get(), "get_strength");
py::Callback<void>::call_method(a_blaster.get(), "set_strength", 5);
}
catch(...)
{
}
}
Miscellaneous
About the vc6 project and the debug build
About doctest.py
Boost remarks:
> > One of us is completely nuts ;->. How can I move the test
> > (is_prefix(enablers[i].name + 2, name + 2)) outside the loop if it
depends
> > on the loop index, i?
> >
> name += 2;
> for()
> {
> if (is_prefix(enablers[i].name + 2, name))
> }
I see now. I guess I should stop pussyfooting and either go for optimization
or clarity here, eh?
------
> Re: Dict
> Why abbreviate this? Code is read 5 or 6 times for every time its
> written. The few extra characters don't affect compile time or program
> speed. It's part of my personal goal of write what you mean, name them
what
> they are.
I completely agree. Abbrevs rub me the wrong way, 2 ;->
-------
Later:
keyword and varargs?
Put explicit Type<> arguments at the beginnings of overloads, to make them look more like template instance specifications.
Known bugs
can't handle 'const void' return values
Who returns 'const void'? I did it once, by mistake ;)