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| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="spirit.what_s_new.spirit_2_3"></a><a class="link" href="spirit_2_3.html" title="Spirit V2.3">Spirit V2.3</a> |
| </h3></div></div></div> |
| <a name="spirit.what_s_new.spirit_2_3.what_s_changed_in__emphasis_spirit_qi__emphasis__and__emphasis_spirit_karma__emphasis__from_v2_2__boost_v1_42_0__to_v2_3__boost_v1_43_0_"></a><h5> |
| <a name="id780837"></a> |
| <a class="link" href="spirit_2_3.html#spirit.what_s_new.spirit_2_3.what_s_changed_in__emphasis_spirit_qi__emphasis__and__emphasis_spirit_karma__emphasis__from_v2_2__boost_v1_42_0__to_v2_3__boost_v1_43_0_">What's |
| changed in <span class="emphasis"><em>Spirit.Qi</em></span> and <span class="emphasis"><em>Spirit.Karma</em></span> |
| from V2.2 (Boost V1.42.0) to V2.3 (Boost V1.43.0)</a> |
| </h5> |
| <a name="spirit.what_s_new.spirit_2_3.new_features"></a><h5> |
| <a name="id780859"></a> |
| <a class="link" href="spirit_2_3.html#spirit.what_s_new.spirit_2_3.new_features">New Features</a> |
| </h5> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| The customization point <code class="computeroutput"><span class="identifier">transform_attribute</span></code> |
| now has to implement a third function: <code class="computeroutput"><span class="keyword">void</span> |
| <span class="identifier">fail</span><span class="special">(</span><span class="identifier">Exposed</span><span class="special">&)</span></code>, |
| which normally will do nothing. This function will be called whenever |
| the right hand side of the <code class="computeroutput"><span class="identifier">rule</span></code> |
| (or the embedded parser of <code class="computeroutput"><span class="identifier">attr_cast</span></code>) |
| fail parsing. This change affects <span class="emphasis"><em>Qi</em></span> only. See the |
| description of the <a class="link" href="../advanced/customize/transform.html" title="Transform an Attribute to a Different Type (Qi and Karma)"><code class="computeroutput"><span class="identifier">transform_attribute</span></code></a> for more |
| details. |
| </li> |
| <li class="listitem"> |
| Added support for attribute sequences created with <code class="computeroutput"><span class="identifier">BOOST_FUSION_ADAPT_CLASS</span></code> |
| and <code class="computeroutput"><span class="identifier">BOOST_FUSION_ADAPT_CLASS_NAMED</span></code>. |
| This support requires to include the new header file: <code class="computeroutput"><span class="preprocessor">#include</span> |
| <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">inlcude</span><span class="special">/</span><span class="identifier">support_adapt_class_attributes</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>. |
| </li> |
| <li class="listitem"> |
| Added <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">ostream_iterator</span></code> as a counterpart to |
| <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">istream_iterator</span></code> (see new header file: |
| <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">home</span><span class="special">/</span><span class="identifier">support</span><span class="special">/</span><span class="identifier">iterators</span><span class="special">/</span><span class="identifier">ostream_iterator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>). |
| </li> |
| <li class="listitem"> |
| Added <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">hold</span></code> allowing to make sure the embedded |
| parser does not touch the passed attribute in case it fails parsing. |
| </li> |
| <li class="listitem"> |
| Added <a class="link" href="../qi/reference/directive/no_skip.html" title="Inhibiting Skipping Without Pre-skip (no_skip[])"><code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">no_skip</span></code></a> directive, which is |
| equivalent to <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span></code><a class="link" href="../qi/reference/directive/lexeme.html" title="Inhibiting Skipping (lexeme[])"><code class="computeroutput"><span class="identifier">lexeme</span></code></a>, |
| except that it does not pre-skip. |
| </li> |
| <li class="listitem"> |
| Added <a class="link" href="../karma/reference/directive/delimit.html" title="Directives Controlling Automatic Delimiting (verbatim[], no_delimit[], delimit[])"><code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">no_delimit</span></code></a> directive, which |
| is equivalent to <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span></code><a class="link" href="../karma/reference/directive/delimit.html" title="Directives Controlling Automatic Delimiting (verbatim[], no_delimit[], delimit[])"><code class="computeroutput"><span class="identifier">verbatim</span></code></a>, except that it does |
| not perform a post-delimiting step. |
| </li> |
| <li class="listitem"> |
| Added a new input_iterator policy for the <code class="computeroutput"><span class="identifier">multi_pass</span></code> |
| iterator framework (named <code class="computeroutput"><span class="identifier">buffering_input_iterator</span></code>) |
| allowing to wrap underlying input iterators which do not store the last |
| character read from the input (such as <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">istream_iterator</span></code>). |
| This is now used as the default input policy. |
| </li> |
| </ul></div> |
| <a name="spirit.what_s_new.spirit_2_3.bug_fixes"></a><h5> |
| <a name="id782972"></a> |
| <a class="link" href="spirit_2_3.html#spirit.what_s_new.spirit_2_3.bug_fixes">Bug Fixes</a> |
| </h5> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| Sequences (in <span class="emphasis"><em>Qi</em></span> and <span class="emphasis"><em>Karma</em></span>) |
| may now have a component having no attribute even as their last element. |
| </li> |
| <li class="listitem"> |
| Sequences (in <span class="emphasis"><em>Qi</em></span> and <span class="emphasis"><em>Karma</em></span>) |
| can now take one element attribute sequences as their attribute. |
| </li> |
| <li class="listitem"> |
| Constructs like <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">[</span><span class="identifier">karma</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">[...]]</span></code> don't result in performing double |
| buffering anymore. The same is true if an alternative is wrapped into |
| a <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">[]</span></code> |
| directive (as for instance: <code class="computeroutput"><span class="identifier">buffer</span><span class="special">[</span><span class="identifier">a</span><span class="special">]</span> <span class="special">|</span> <span class="identifier">b</span></code>). |
| </li> |
| <li class="listitem"> |
| The <span class="emphasis"><em>Spirit.Karma</em></span> output iterator (which is used |
| internally, but also is exposed when using the stream based API) is now |
| properly copyable (thanks to Jonas Persson for reporting this issue). |
| </li> |
| <li class="listitem"> |
| The default <code class="computeroutput"><span class="identifier">multi_pass</span></code> |
| iterator is now usable with underlying input iterators which do not store |
| the last character read from the input (such as <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">istream_iterator</span></code>). |
| Thanks to Larry Evans and Peter Schueller for independently reporting |
| this problem. |
| </li> |
| <li class="listitem"> |
| The directive <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">omit</span><span class="special">[]</span></code> |
| now does not accept an arbitrary attribute type anymore. |
| </li> |
| <li class="listitem"> |
| The <span class="emphasis"><em>Spirit.Karma</em></span> predicates (the and-predicate and |
| the not-predicate) and the directive <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">omit</span><span class="special">[]</span></code> now disable output altogether instead |
| of intercepting the output into a buffer which got discarded as before. |
| </li> |
| <li class="listitem"> |
| Fixed <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">rule</span></code> to properly handles optional attributes. |
| </li> |
| </ul></div> |
| <a name="spirit.what_s_new.spirit_2_3.what_s_changed_in__emphasis_spirit_lex__emphasis__from_v2_2__boost_v1_42_0__to_v2_3__boost_v1_43_0_"></a><h5> |
| <a name="id783218"></a> |
| <a class="link" href="spirit_2_3.html#spirit.what_s_new.spirit_2_3.what_s_changed_in__emphasis_spirit_lex__emphasis__from_v2_2__boost_v1_42_0__to_v2_3__boost_v1_43_0_">What's |
| changed in <span class="emphasis"><em>Spirit.Lex</em></span> from V2.2 (Boost V1.42.0) to V2.3 |
| (Boost V1.43.0)</a> |
| </h5> |
| <a name="spirit.what_s_new.spirit_2_3.new_lexer_features"></a><h5> |
| <a name="id783236"></a> |
| <a class="link" href="spirit_2_3.html#spirit.what_s_new.spirit_2_3.new_lexer_features">New Lexer |
| Features</a> |
| </h5> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| The library does not minimize the generated lexer tables for dynamic |
| lexers by default anymore. The generated tables will now be minimized |
| for static lexers only. |
| </li> |
| <li class="listitem"> |
| The function <code class="computeroutput"><span class="identifier">lexer</span><span class="special"><>::</span><span class="identifier">init_dfa</span><span class="special">()</span></code> |
| now takes a single boolean parameter (which defaults to <code class="computeroutput"><span class="keyword">false</span></code>) allowing to force minimization |
| of the generated lexer tables. |
| </li> |
| </ul></div> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2001-2010 Joel de Guzman, Hartmut Kaiser<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
| </p> |
| </div></td> |
| </tr></table> |
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