From 8b1748fea0ca6d904552ff4b33d2934e90dae8c5 Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dave@boostpro.com>
Date: Tue, 31 Jan 2006 03:26:46 +0000
Subject: [PATCH] add tuple conversion

[SVN r32473]
---
 todo.html | 172 +++++++++++++++++++++++++++---------------------------
 todo.txt  |   7 +++
 2 files changed, 94 insertions(+), 85 deletions(-)
diff --git a/todo.html b/todo.html
index c5664244..c2c4bdf7 100755
--- a/todo.html
+++ b/todo.html
@@ -3,27 +3,28 @@
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-<meta name="generator" content="Docutils 0.3.1: http://docutils.sourceforge.net/" />
+<meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" />
 <title>Boost.Python TODO list Boost</title>
+<meta name="copyright" content="Copyright David Abrahams 2003. Use, modification, and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)" />
 <link rel="stylesheet" href="../../rst.css" type="text/css" />
 </head>
 <body>
 <div class="document" id="boost-python-todo-list-logo">
-<h1 class="title"><a class="reference" href="index.html">Boost.Python</a> TODO list <a class="reference" href="../../index.htm"><img alt="Boost" src="../../boost.png" /></a></h1>
-<!-- -*- mode: rst -*- -->
-<table class="field-list" frame="void" rules="none">
-<col class="field-name" />
-<col class="field-body" />
+<h1 class="title"><a class="reference" href="index.html">Boost.Python</a> TODO list <a class="reference" href="../../index.htm"><img alt="Boost" class="boost-logo" src="../../boost.png" /></a></h1>
+<table class="docinfo" frame="void" rules="none">
+<col class="docinfo-name" />
+<col class="docinfo-content" />
 <tbody valign="top">
-<tr class="field"><th class="field-name">copyright:</th><td class="field-body">Copyright David Abrahams 2003. Use, modification, and
+<tr><th class="docinfo-name">Copyright:</th>
+<td>Copyright David Abrahams 2003. Use, modification, and
 distribution are subject to the Boost Software License, Version
 1.0. (See accompanying file <a class="reference" href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or copy at
-<a class="reference" href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</td>
-</tr>
+<a class="reference" href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</td></tr>
 </tbody>
 </table>
-<div class="contents topic" id="outline">
-<p class="topic-title"><a name="outline">Outline</a></p>
+<!-- -*- mode: rst -*- -->
+<div class="contents topic">
+<p class="topic-title first"><a id="outline" name="outline">Outline</a></p>
 <ul class="simple">
 <li><a class="reference" href="#class-support" id="id4" name="id4">Class Support</a><ul>
 <li><a class="reference" href="#base-class-for-virtual-function-callback-wrappers" id="id5" name="id5">Base Class for Virtual Function Callback Wrappers</a></li>
@@ -39,39 +40,40 @@ distribution are subject to the Boost Software License, Version
 </ul>
 </li>
 <li><a class="reference" href="#type-converters" id="id11" name="id11">Type Converters</a><ul>
-<li><a class="reference" href="#lvalue-conversions-from-non-const-pytypeobject-s" id="id12" name="id12">Lvalue conversions from non-const <tt class="literal"><span class="pre">PyTypeObject*</span></tt>s</a></li>
+<li><a class="reference" href="#lvalue-conversions-from-non-const-pytypeobject-s" id="id12" name="id12">Lvalue conversions from non-const <tt class="docutils literal"><span class="pre">PyTypeObject*</span></tt>s</a></li>
 <li><a class="reference" href="#converter-scoping" id="id13" name="id13">Converter Scoping</a></li>
-<li><a class="reference" href="#file-conversions" id="id14" name="id14"><tt class="literal"><span class="pre">FILE*</span></tt> conversions</a></li>
-<li><a class="reference" href="#void-conversions" id="id15" name="id15"><tt class="literal"><span class="pre">void*</span></tt> conversions</a></li>
-<li><a class="reference" href="#post-call-actions" id="id16" name="id16">Post-Call Actions</a></li>
-<li><a class="reference" href="#pyunicode-support" id="id17" name="id17"><tt class="literal"><span class="pre">PyUnicode</span></tt> Support</a></li>
-<li><a class="reference" href="#ownership-metadata" id="id18" name="id18">Ownership Metadata</a></li>
+<li><a class="reference" href="#boost-tuple" id="id14" name="id14"><tt class="docutils literal"><span class="pre">boost::tuple</span></tt></a></li>
+<li><a class="reference" href="#file-conversions" id="id15" name="id15"><tt class="docutils literal"><span class="pre">FILE*</span></tt> conversions</a></li>
+<li><a class="reference" href="#void-conversions" id="id16" name="id16"><tt class="docutils literal"><span class="pre">void*</span></tt> conversions</a></li>
+<li><a class="reference" href="#post-call-actions" id="id17" name="id17">Post-Call Actions</a></li>
+<li><a class="reference" href="#pyunicode-support" id="id18" name="id18"><tt class="docutils literal"><span class="pre">PyUnicode</span></tt> Support</a></li>
+<li><a class="reference" href="#ownership-metadata" id="id19" name="id19">Ownership Metadata</a></li>
 </ul>
 </li>
-<li><a class="reference" href="#documentation" id="id19" name="id19">Documentation</a><ul>
-<li><a class="reference" href="#builtin-converters" id="id20" name="id20">Builtin Converters</a></li>
-<li><a class="reference" href="#internals" id="id21" name="id21">Internals</a></li>
+<li><a class="reference" href="#documentation" id="id20" name="id20">Documentation</a><ul>
+<li><a class="reference" href="#builtin-converters" id="id21" name="id21">Builtin Converters</a></li>
+<li><a class="reference" href="#internals" id="id22" name="id22">Internals</a></li>
 </ul>
 </li>
-<li><a class="reference" href="#large-scale" id="id22" name="id22">Large Scale</a><ul>
-<li><a class="reference" href="#full-threading-support" id="id23" name="id23">Full Threading Support</a></li>
-<li><a class="reference" href="#langbinding" id="id24" name="id24">Langbinding</a></li>
-<li><a class="reference" href="#refactoring-and-reorganization" id="id25" name="id25">Refactoring and Reorganization</a></li>
-<li><a class="reference" href="#numarray-support-enhancements" id="id26" name="id26">NumArray Support Enhancements</a></li>
-<li><a class="reference" href="#pyfinalize-safety" id="id27" name="id27"><tt class="literal"><span class="pre">PyFinalize</span></tt> Safety</a></li>
+<li><a class="reference" href="#large-scale" id="id23" name="id23">Large Scale</a><ul>
+<li><a class="reference" href="#full-threading-support" id="id24" name="id24">Full Threading Support</a></li>
+<li><a class="reference" href="#langbinding" id="id25" name="id25">Langbinding</a></li>
+<li><a class="reference" href="#refactoring-and-reorganization" id="id26" name="id26">Refactoring and Reorganization</a></li>
+<li><a class="reference" href="#numarray-support-enhancements" id="id27" name="id27">NumArray Support Enhancements</a></li>
+<li><a class="reference" href="#pyfinalize-safety" id="id28" name="id28"><tt class="docutils literal"><span class="pre">PyFinalize</span></tt> Safety</a></li>
 </ul>
 </li>
 </ul>
 </div>
-<div class="section" id="class-support">
-<h1><a class="toc-backref" href="#id4" name="class-support">Class Support</a></h1>
-<div class="section" id="base-class-for-virtual-function-callback-wrappers">
-<h2><a class="toc-backref" href="#id5" name="base-class-for-virtual-function-callback-wrappers">Base Class for Virtual Function Callback Wrappers</a></h2>
+<div class="section">
+<h1><a class="toc-backref" href="#id4" id="class-support" name="class-support">Class Support</a></h1>
+<div class="section">
+<h2><a class="toc-backref" href="#id5" id="base-class-for-virtual-function-callback-wrappers" name="base-class-for-virtual-function-callback-wrappers">Base Class for Virtual Function Callback Wrappers</a></h2>
 <ul class="simple">
 <li><a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1456023">http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1456023</a>
 (bottom of message)</li>
 <li><a class="reference" href="http://mail.python.org/pipermail/c++-sig/2003-August/005297.html">http://mail.python.org/pipermail/c++-sig/2003-August/005297.html</a>
-(search for <tt class="literal"><span class="pre">VirtualDispatcher</span></tt>) describes how callback classes
+(search for <tt class="docutils literal"><span class="pre">VirtualDispatcher</span></tt>) describes how callback classes
 can swap ownership relationship with their Python wrappers.</li>
 <li><a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1860301">http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1860301</a>
 describes how this can also be used to considerably simplify
@@ -80,30 +82,30 @@ optimize the calling of non-overridden virtual functions.</li>
 </ul>
 </div>
 </div>
-<div class="section" id="miscellaneous">
-<h1><a class="toc-backref" href="#id6" name="miscellaneous">Miscellaneous</a></h1>
-<div class="section" id="support-for-enums-with-duplicate-values">
-<h2><a class="toc-backref" href="#id7" name="support-for-enums-with-duplicate-values">Support for Enums with Duplicate Values</a></h2>
+<div class="section">
+<h1><a class="toc-backref" href="#id6" id="miscellaneous" name="miscellaneous">Miscellaneous</a></h1>
+<div class="section">
+<h2><a class="toc-backref" href="#id7" id="support-for-enums-with-duplicate-values" name="support-for-enums-with-duplicate-values">Support for Enums with Duplicate Values</a></h2>
 <blockquote>
 Scott Snyder provided a patch; Dave was dissatisfied for some
 reason, but maybe it should just be applied if no further action
 occurs <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/1824616">http://aspn.activestate.com/ASPN/Mail/Message/1824616</a>.</blockquote>
 </div>
 </div>
-<div class="section" id="functions">
-<h1><a class="toc-backref" href="#id8" name="functions">Functions</a></h1>
-<div class="section" id="wrapping-function-objects">
-<h2><a class="toc-backref" href="#id9" name="wrapping-function-objects">Wrapping Function Objects</a></h2>
+<div class="section">
+<h1><a class="toc-backref" href="#id8" id="functions" name="functions">Functions</a></h1>
+<div class="section">
+<h2><a class="toc-backref" href="#id9" id="wrapping-function-objects" name="wrapping-function-objects">Wrapping Function Objects</a></h2>
 <blockquote>
-<p>It should be possible to wrap classes which support <tt class="literal"><span class="pre">operator()</span></tt>
+<p>It should be possible to wrap classes which support <tt class="docutils literal"><span class="pre">operator()</span></tt>
 as Python methods.</p>
 <p><a class="reference" href="http://mail.python.org/pipermail/c++-sig/2003-August/005184.html">http://mail.python.org/pipermail/c++-sig/2003-August/005184.html</a></p>
 </blockquote>
 </div>
-<div class="section" id="best-match-overload-resolution">
-<h2><a class="toc-backref" href="#id10" name="best-match-overload-resolution">&quot;Best Match&quot; Overload Resolution</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id10" id="best-match-overload-resolution" name="best-match-overload-resolution">&quot;Best Match&quot; Overload Resolution</a></h2>
 <blockquote>
-<p>Overload resolution currently depends on the order in which <tt class="literal"><span class="pre">def</span></tt>
+<p>Overload resolution currently depends on the order in which <tt class="docutils literal"><span class="pre">def</span></tt>
 calls are made (preferring later overloads).  This should be
 changed so that the best-matching overload is always selected.
 This may await <a class="reference" href="#langbinding">Langbinding</a> integration, since the technology is
@@ -111,49 +113,55 @@ already in <a class="reference" href="http://luabind.sf.net">Luabind</a>.</p>
 </blockquote>
 </div>
 </div>
-<div class="section" id="type-converters">
-<h1><a class="toc-backref" href="#id11" name="type-converters">Type Converters</a></h1>
-<div class="section" id="lvalue-conversions-from-non-const-pytypeobject-s">
-<h2><a class="toc-backref" href="#id12" name="lvalue-conversions-from-non-const-pytypeobject-s">Lvalue conversions from non-const <tt class="literal"><span class="pre">PyTypeObject*</span></tt>s</a></h2>
+<div class="section">
+<h1><a class="toc-backref" href="#id11" id="type-converters" name="type-converters">Type Converters</a></h1>
+<div class="section">
+<h2><a class="toc-backref" href="#id12" id="lvalue-conversions-from-non-const-pytypeobject-s" name="lvalue-conversions-from-non-const-pytypeobject-s">Lvalue conversions from non-const <tt class="docutils literal"><span class="pre">PyTypeObject*</span></tt>s</a></h2>
 <blockquote>
 <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1662717">http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1662717</a></blockquote>
 </div>
-<div class="section" id="converter-scoping">
-<h2><a class="toc-backref" href="#id13" name="converter-scoping">Converter Scoping</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id13" id="converter-scoping" name="converter-scoping">Converter Scoping</a></h2>
 <blockquote>
 <p><a class="reference" href="http://article.gmane.org/gmane.comp.python.c++/2044">http://article.gmane.org/gmane.comp.python.c++/2044</a></p>
 <p>If this gets done at all, it is going to happen in conjunction
 with <a class="reference" href="#langbinding">Luabind integration</a>.</p>
 </blockquote>
 </div>
-<div class="section" id="file-conversions">
-<h2><a class="toc-backref" href="#id14" name="file-conversions"><tt class="literal"><span class="pre">FILE*</span></tt> conversions</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id14" id="boost-tuple" name="boost-tuple"><tt class="docutils literal"><span class="pre">boost::tuple</span></tt></a></h2>
+<blockquote>
+Conversions to and from Python would be nice.  See
+<a class="reference" href="http://news.gmane.org/find-root.php?message_id=%3cuvewak97m.fsf%40boost%2dconsulting.com%3e">http://news.gmane.org/find-root.php?message_id=%3cuvewak97m.fsf%40boost%2dconsulting.com%3e</a></blockquote>
+</div>
+<div class="section">
+<h2><a class="toc-backref" href="#id15" id="file-conversions" name="file-conversions"><tt class="docutils literal"><span class="pre">FILE*</span></tt> conversions</a></h2>
 <blockquote>
 <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/1411366">http://aspn.activestate.com/ASPN/Mail/Message/1411366</a></blockquote>
 </div>
-<div class="section" id="void-conversions">
-<h2><a class="toc-backref" href="#id15" name="void-conversions"><tt class="literal"><span class="pre">void*</span></tt> conversions</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id16" id="void-conversions" name="void-conversions"><tt class="docutils literal"><span class="pre">void*</span></tt> conversions</a></h2>
 <blockquote>
-Pointers to <em>cv</em> <tt class="literal"><span class="pre">void</span></tt> should be able to be passed and
+Pointers to <em>cv</em> <tt class="docutils literal"><span class="pre">void</span></tt> should be able to be passed and
 returned as opaque values.</blockquote>
 </div>
-<div class="section" id="post-call-actions">
-<h2><a class="toc-backref" href="#id16" name="post-call-actions">Post-Call Actions</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id17" id="post-call-actions" name="post-call-actions">Post-Call Actions</a></h2>
 <blockquote>
 From-Python converters should be passed an extra reference to a
 chain of post-call actions in the Policies object, where they can
 register an additional action.  See the end of
 <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1755435">http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1755435</a></blockquote>
 </div>
-<div class="section" id="pyunicode-support">
-<h2><a class="toc-backref" href="#id17" name="pyunicode-support"><tt class="literal"><span class="pre">PyUnicode</span></tt> Support</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id18" id="pyunicode-support" name="pyunicode-support"><tt class="docutils literal"><span class="pre">PyUnicode</span></tt> Support</a></h2>
 <blockquote>
 <p>Review and possibly incorporate changes from <a class="reference" href="mailto:qinlj-at-solidshare.com">Lijun Qin</a> at
 <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1771145">http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1771145</a></p>
 </blockquote>
 </div>
-<div class="section" id="ownership-metadata">
-<h2><a class="toc-backref" href="#id18" name="ownership-metadata">Ownership Metadata</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id19" id="ownership-metadata" name="ownership-metadata">Ownership Metadata</a></h2>
 <blockquote>
 In the thread at
 <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1860301">http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1860301</a>,
@@ -164,16 +172,16 @@ count on an object doesn't tell us anything about the lifetime
 of its data.</blockquote>
 </div>
 </div>
-<div class="section" id="documentation">
-<h1><a class="toc-backref" href="#id19" name="documentation">Documentation</a></h1>
-<div class="section" id="builtin-converters">
-<h2><a class="toc-backref" href="#id20" name="builtin-converters">Builtin Converters</a></h2>
+<div class="section">
+<h1><a class="toc-backref" href="#id20" id="documentation" name="documentation">Documentation</a></h1>
+<div class="section">
+<h2><a class="toc-backref" href="#id21" id="builtin-converters" name="builtin-converters">Builtin Converters</a></h2>
 <blockquote>
 Builtin correspondences between builtiin Python types and C++
 types need to be documented</blockquote>
 </div>
-<div class="section" id="internals">
-<h2><a class="toc-backref" href="#id21" name="internals">Internals</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id22" id="internals" name="internals">Internals</a></h2>
 <blockquote>
 <p>The structure of the framework needs to get documented; <a class="reference" href="mailto:brett.calcott-at-paradise.net.nz">Brett
 Calcott</a> has promised to turn <a class="reference" href="doc/internals.html">this document</a> into something fit
@@ -181,10 +189,10 @@ for users</p>
 </blockquote>
 </div>
 </div>
-<div class="section" id="large-scale">
-<h1><a class="toc-backref" href="#id22" name="large-scale">Large Scale</a></h1>
-<div class="section" id="full-threading-support">
-<h2><a class="toc-backref" href="#id23" name="full-threading-support">Full Threading Support</a></h2>
+<div class="section">
+<h1><a class="toc-backref" href="#id23" id="large-scale" name="large-scale">Large Scale</a></h1>
+<div class="section">
+<h2><a class="toc-backref" href="#id24" id="full-threading-support" name="full-threading-support">Full Threading Support</a></h2>
 <blockquote>
 Various people have proposed patches to improve threading support
 in Boost.Python: see the thread at
@@ -194,33 +202,33 @@ examples.  The only problem is that these are incomplete
 solutions and verifying that we <em>do</em> have a complete solution is
 going to take some time and attention.</blockquote>
 </div>
-<div class="section" id="langbinding">
-<h2><a class="toc-backref" href="#id24" name="langbinding">Langbinding</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id25" id="langbinding" name="langbinding">Langbinding</a></h2>
 <blockquote>
 This project to generalizes Boost.Python to work for other
 languages, initially Lua.  See discussions at
 <a class="reference" href="http://lists.sourceforge.net/lists/listinfo/boost-langbinding">http://lists.sourceforge.net/lists/listinfo/boost-langbinding</a></blockquote>
 </div>
-<div class="section" id="refactoring-and-reorganization">
-<h2><a class="toc-backref" href="#id25" name="refactoring-and-reorganization">Refactoring and Reorganization</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id26" id="refactoring-and-reorganization" name="refactoring-and-reorganization">Refactoring and Reorganization</a></h2>
 <blockquote>
 <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1673338">http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1673338</a></blockquote>
 </div>
-<div class="section" id="numarray-support-enhancements">
-<h2><a class="toc-backref" href="#id26" name="numarray-support-enhancements">NumArray Support Enhancements</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id27" id="numarray-support-enhancements" name="numarray-support-enhancements">NumArray Support Enhancements</a></h2>
 <blockquote>
 Consider integrating the enhancements described in
 <a class="reference" href="http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1757092">http://aspn.activestate.com/ASPN/Mail/Message/C++-sig/1757092</a></blockquote>
 </div>
-<div class="section" id="pyfinalize-safety">
-<h2><a class="toc-backref" href="#id27" name="pyfinalize-safety"><tt class="literal"><span class="pre">PyFinalize</span></tt> Safety</a></h2>
+<div class="section">
+<h2><a class="toc-backref" href="#id28" id="pyfinalize-safety" name="pyfinalize-safety"><tt class="docutils literal"><span class="pre">PyFinalize</span></tt> Safety</a></h2>
 <blockquote>
 <p>Currently Boost.Python has several global (or function-static)
 objects whose existence keeps reference counts from dropping to
 zero until the Boost.Python shared object is unloaded.  This can
 cause a crash because when the reference counts <em>do</em> go to zero,
 there's no interpreter.  In order to make it safe to call
-<tt class="literal"><span class="pre">PyFinalize()</span></tt> we must register an <tt class="literal"><span class="pre">atexit</span></tt> routine which
+<tt class="docutils literal"><span class="pre">PyFinalize()</span></tt> we must register an <tt class="docutils literal"><span class="pre">atexit</span></tt> routine which
 destroys these objects and releases all Python reference counts
 so that Python can clean them up while there's still an
 interpreter.  <a class="reference" href="mailto:dirk-at-gerrits.homeip.net">Dirk Gerrits</a> has promised to do this job.</p>
@@ -228,11 +236,5 @@ interpreter.  <a class="reference" href="mailto:dirk-at-gerrits.homeip.net">Dirk
 </div>
 </div>
 </div>
-<hr class="footer" />
-<div class="footer">
-<a class="reference" href="todo.txt">View document source</a>.
-Generated on: 2004-01-02 18:33 UTC.
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diff --git a/todo.txt b/todo.txt
index c8a9be98..fb4f1c3c 100644
--- a/todo.txt
+++ b/todo.txt
@@ -91,6 +91,13 @@ Converter Scoping
 
   __ Langbinding_
 
+
+``boost::tuple``
+----------------
+
+  Conversions to and from Python would be nice.  See
+  http://news.gmane.org/find-root.php?message_id=%3cuvewak97m.fsf%40boost%2dconsulting.com%3e
+
 ``FILE*`` conversions
 ---------------------
 

copyright:	Copyright David Abrahams 2003. Use, modification, and +
Copyright:	Copyright David Abrahams 2003. Use, modification, and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at -http://www.boost.org/LICENSE_1_0.txt)