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| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="spirit.what_s_new.spirit_2_1"></a><a class="link" href="spirit_2_1.html" title="Spirit V2.1">Spirit V2.1</a> |
| </h3></div></div></div> |
| <a name="spirit.what_s_new.spirit_2_1.what_s_changed_in__emphasis_spirit_qi__emphasis__and__emphasis_spirit_karma__emphasis__from_v2_0__boost_v1_37_0__to_v2_1__boost_v1_41_0_"></a><h5> |
| <a name="id783987"></a> |
| <a class="link" href="spirit_2_1.html#spirit.what_s_new.spirit_2_1.what_s_changed_in__emphasis_spirit_qi__emphasis__and__emphasis_spirit_karma__emphasis__from_v2_0__boost_v1_37_0__to_v2_1__boost_v1_41_0_">What's |
| changed in <span class="emphasis"><em>Spirit.Qi</em></span> and <span class="emphasis"><em>Spirit.Karma</em></span> |
| from V2.0 (Boost V1.37.0) to V2.1 (Boost V1.41.0)</a> |
| </h5> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| <a href="http://boost-spirit.com" target="_top">Spirit</a> is now based on the |
| newest version of <a href="../../../../../../doc/html/proto.html" target="_top">Boost.Proto</a> |
| </li> |
| <li class="listitem"> |
| <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">phrase_parse</span></code>, <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">phrase_format</span></code> |
| now post-skip by default. |
| </li> |
| <li class="listitem"> |
| <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">generate_delimited</span></code> and <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">format_delimited</span></code> now don't do pre- |
| delimiting by default. |
| </li> |
| <li class="listitem"> |
| Changed parameter sequence of <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">phrase_parse</span></code>, |
| <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">phrase_match</span></code>, <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">generate_delimited</span></code>, |
| and <code class="computeroutput"><span class="identifier">match_delimited</span></code>. |
| The attribute is now always the last parameter. |
| </li> |
| <li class="listitem"> |
| Added new overloads of those functions allowing to explicitly specify |
| the post-skipping and pre-delimiting behavior. |
| </li> |
| <li class="listitem"> |
| Added multi attribute API functions |
| </li> |
| <li class="listitem"> |
| Removed <code class="computeroutput"><span class="identifier">grammar_def</span><span class="special"><></span></code> |
| </li> |
| <li class="listitem"> |
| Removed functions <code class="computeroutput"><span class="identifier">make_parser</span><span class="special">()</span></code> and <code class="computeroutput"><span class="identifier">make_generator</span><span class="special">()</span></code> |
| </li> |
| <li class="listitem"> |
| Removed <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">none</span></code> and <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">none</span></code> |
| </li> |
| <li class="listitem"> |
| Sequences and lists now accept a standard container as their attribute |
| </li> |
| <li class="listitem"> |
| The string placeholder terminal now can take other strings as its parameter |
| (i.e. std::string) |
| </li> |
| <li class="listitem"> |
| All terminals taking literals now accept a (lazy) function object as |
| well |
| </li> |
| <li class="listitem"> |
| All placeholders for terminals and directives (such as <code class="computeroutput"><span class="identifier">int_</span></code>, <code class="computeroutput"><span class="identifier">double_</span></code>, |
| <code class="computeroutput"><span class="identifier">verbatim</span></code>, etc.) were |
| previously defined in the namespace <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span></code> |
| only. Now these are additionally imported into the namespaces <code class="computeroutput"><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">qi</span></code>, <code class="computeroutput"><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">karma</span></code>, |
| and <code class="computeroutput"><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">lex</span></code> (if they are supported by the corresponding |
| sub-library). |
| </li> |
| <li class="listitem"> |
| The terminal placeholders <code class="computeroutput"><span class="identifier">char_</span></code> |
| and <code class="computeroutput"><span class="identifier">string</span></code> are not defined |
| in the namespace <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span></code> |
| anymore as they have been moved to the character set namespaces, allowing |
| to do proper character set handling based on the used namespace (as |
| <code class="computeroutput"><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">ascii</span></code>, etc.) |
| </li> |
| <li class="listitem"> |
| The <code class="computeroutput"><span class="identifier">uint</span></code>, <code class="computeroutput"><span class="identifier">ushort</span></code>, <code class="computeroutput"><span class="identifier">ulong</span></code>, |
| and <code class="computeroutput"><span class="identifier">byte</span></code> terminal placeholders |
| have been renamed to <code class="computeroutput"><span class="identifier">uint_</span></code>, |
| <code class="computeroutput"><span class="identifier">ushort_</span></code>, <code class="computeroutput"><span class="identifier">ulong_</span></code>, and <code class="computeroutput"><span class="identifier">byte_</span></code>. |
| </li> |
| <li class="listitem"> |
| <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">skip</span><span class="special">[]</span></code> |
| now re-enables outer skipper if used inside <code class="computeroutput"><span class="identifier">lexeme</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">maxwidth</span><span class="special">[]</span></code> |
| directive (see <a class="link" href="../karma/reference/directive/maxwidth.html" title="Controlling the Maximum Field Width (maxwidth[])"><code class="computeroutput"><span class="identifier">maxwidth</span></code></a>) |
| </li> |
| <li class="listitem"> |
| Added <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">omit</span><span class="special">[]</span></code> |
| allowing to consume the attribute of subject generator without emitting |
| any output (see <a class="link" href="../karma/reference/directive/omit.html" title="Consume Attribute (omit[] and skip[])"><code class="computeroutput"><span class="identifier">omit</span></code></a>). |
| </li> |
| <li class="listitem"> |
| Added <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">[]</span></code> |
| allowing to avoid unwanted output to be generated in case of a generator |
| failing in the middle of a sequence (see <a class="link" href="../karma/reference/directive/buffer.html" title="Temporary Output Buffering (buffer[])"><code class="computeroutput"><span class="identifier">buffer</span></code></a>). |
| </li> |
| <li class="listitem"> |
| <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">delimit</span><span class="special">[]</span></code> |
| now re-enables outer delimiter if used inside <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code> |
| </li> |
| <li class="listitem"> |
| Karma: added and-predicate (<code class="computeroutput"><span class="keyword">operator</span><span class="special">&()</span></code>) and not-predicate (<code class="computeroutput"><span class="keyword">operator</span><span class="special">!()</span></code>) |
| Both now always consume an attribute. |
| </li> |
| <li class="listitem"> |
| Karma: changed semantics of <code class="computeroutput"><span class="identifier">char_</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">string</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">int_</span><span class="special">()</span></code> et.al., and <code class="computeroutput"><span class="identifier">double_</span><span class="special">()</span></code> et.al.: all of these generators now |
| always expose an attribute. If they do not have an associated attribute, |
| they generate their immediate literal. If they have an associated attribute, |
| the generators first test if the attribute value is equal to the immediate |
| literal. They fail and do not generate anything if those are not equal. |
| Otherwise they generate their immediate literal. For more information |
| see for instance <a class="link" href="../karma/reference/numeric/signed_int.html" title="Signed Integer Number Generators (int_, etc.)"><code class="computeroutput"><span class="identifier">int_</span></code></a>. |
| </li> |
| <li class="listitem"> |
| <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">lit</span><span class="special">()</span></code> |
| can now be used to generate integer and floating point numbers |
| </li> |
| <li class="listitem"> |
| <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">rule</span></code> and <code class="computeroutput"><span class="identifier">karma</span><span class="special">::</span><span class="identifier">rule</span></code> |
| now can be directly initialized using their copy constructor. I.e. this |
| works now: <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">rule</span><span class="special"><...></span> |
| <span class="identifier">r</span> <span class="special">=</span> |
| <span class="special">...</span><span class="identifier">some</span> |
| <span class="identifier">parser</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">attr</span><span class="special">()</span></code> |
| exposing its immediate parameter as its attribute. |
| </li> |
| <li class="listitem"> |
| Added boolean parsers and generators (<code class="computeroutput"><span class="identifier">bool_</span></code>, |
| <code class="computeroutput"><span class="identifier">true_</span></code>, <code class="computeroutput"><span class="identifier">false_</span></code>). |
| </li> |
| <li class="listitem"> |
| Added <code class="computeroutput"><span class="identifier">attr_cast</span><span class="special"><></span></code> |
| enabling in place attribute type conversion in Qi and Karma grammars. |
| </li> |
| <li class="listitem"> |
| Almost all Karma generators now accept <code class="computeroutput"><span class="identifier">optional</span><span class="special"><></span></code> attributes and will fail generating |
| if this is not initialized. |
| </li> |
| <li class="listitem"> |
| Qi and Karma rules now automatically detect whether to apply auto-rule |
| semantics or not (no need for using <code class="computeroutput"><span class="keyword">operator</span><span class="special">%=()</span></code> anymore, even if it's still existing). |
| Auto-rule semantics are applied if the right hand side has no semantic |
| actions attached to any of the elements. This works for rule initialization |
| and assignment. |
| </li> |
| <li class="listitem"> |
| Qi and Karma rules now do intrinsic attribute transformation based on |
| the attribute customization point <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>. |
| </li> |
| <li class="listitem"> |
| All char_ parsers now always expose an attribute. Earlier <code class="computeroutput"><span class="identifier">char_</span><span class="special">(...)</span></code> |
| didn't expose an attribute while <code class="computeroutput"><span class="identifier">char_</span></code> |
| did. If you need a literal parser not exposing any attribute use <code class="computeroutput"><span class="identifier">lit</span><span class="special">(...)</span></code> |
| instead. |
| </li> |
| <li class="listitem"> |
| The qi::int_spec, qi::real_spec, karma::int_spec, and karma real_spec |
| types do not exist anymore. These have been replaced with qi::int_parser, |
| qi::real_parser, karma::int_generator, and karma::real_generator. |
| </li> |
| </ul></div> |
| <a name="spirit.what_s_new.spirit_2_1.what_s_changed_in__emphasis_spirit_lex__emphasis__from_v2_0__boost_v1_37_0__to_v2_1__boost_v1_41_0_"></a><h5> |
| <a name="id785572"></a> |
| <a class="link" href="spirit_2_1.html#spirit.what_s_new.spirit_2_1.what_s_changed_in__emphasis_spirit_lex__emphasis__from_v2_0__boost_v1_37_0__to_v2_1__boost_v1_41_0_">What's |
| changed in <span class="emphasis"><em>Spirit.Lex</em></span> from V2.0 (Boost V1.37.0) to V2.1 |
| (Boost V1.41.0)</a> |
| </h5> |
| <p> |
| Here is a list of changes in <span class="emphasis"><em>Spirit.Lex</em></span> since version |
| 2.0. <span class="emphasis"><em>Spirit.Lex</em></span> 2.1 is a complete rewrite of the <span class="emphasis"><em>Spirit.Lex</em></span> |
| distributed with Boost V1.37. As with all code portions of the <a href="http://boost-spirit.com" target="_top">Spirit</a> |
| library, <span class="emphasis"><em>Spirit.Lex</em></span> is usable as stand alone piece. |
| <span class="emphasis"><em>Spirit.Lex</em></span> now uses the infrastructure provided by |
| <a href="http://boost-spirit.com" target="_top">Spirit</a> version 2.1. |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| The lex::lexer_def class has been renamed to lex::lexer, while the original |
| class lex::lexer does not exist anymore. This simplifies the creation |
| of lexers. |
| </li> |
| <li class="listitem"> |
| The lex::lexer class does not have the function <code class="computeroutput"><span class="identifier">def</span><span class="special">(</span><span class="identifier">Self</span><span class="special">&</span> <span class="identifier">self</span><span class="special">)</span></code> anymore, token definitions can be added |
| to the lexer at any time, usually in the constructor of the user defined |
| lexer class: |
| <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Lexer</span><span class="special">></span> |
| <span class="keyword">struct</span> <span class="identifier">example_tokens</span> <span class="special">:</span> <span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexer</span><span class="special"><</span><span class="identifier">Lexer</span><span class="special">></span> |
| <span class="special">{</span> |
| <span class="identifier">example_tokens</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="comment">// your token definitions here |
| </span> <span class="keyword">this</span><span class="special">-></span><span class="identifier">self</span> <span class="special">=</span> <span class="special">...</span> |
| <span class="special">}</span> |
| <span class="special">};</span> |
| </pre> |
| </li> |
| <li class="listitem"> |
| The new lexer class can now be used directly. The function <code class="computeroutput"><span class="identifier">make_lexer</span><span class="special">()</span></code> |
| has been removed. |
| </li> |
| <li class="listitem"> |
| The <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">tokenize_and_parse</span><span class="special">()</span></code> |
| and <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">tokenize_and_phrase_parse</span><span class="special">()</span></code> |
| functions have been changed to match the parameter sequence as implemented |
| by the <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">parse</span><span class="special">()</span></code> |
| and <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">phrase_parse</span><span class="special">()</span></code> |
| functions. Both take an arbitrary number of attribute arguments as the |
| last parameters. This argument list is limited by the macro <code class="computeroutput"><span class="identifier">SPIRIT_ARGUMENTS_LIMIT</span></code>. |
| </li> |
| <li class="listitem"> |
| The <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexertl_lexer</span></code>, and <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexertl_token</span></code> |
| classes have been moved to the <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexertl</span></code> |
| namespace and the names have been changed to <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexertl</span><span class="special">::</span><span class="identifier">lexer</span></code>, |
| <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexertl</span><span class="special">::</span><span class="identifier">token</span></code>. This also applies to the <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexert_actor_lexer</span></code>, and the <code class="computeroutput"><span class="identifier">static_lexertl_</span><span class="special">*</span></code> |
| family of types. |
| </li> |
| <li class="listitem"> |
| The class <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexertl_token_set</span></code> has been removed. |
| This functionality is now available from the lexer class. |
| </li> |
| <li class="listitem"> |
| The <span class="emphasis"><em>Spirit.Lex</em></span> library has been updated to use the |
| newest version of Ben Hansons <a href="http://www.benhanson.net/lexertl.html" target="_top">Lexertl</a> |
| lexer construction library (Boost review pending). |
| </li> |
| <li class="listitem"> |
| The <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexer</span><span class="special"><</span><span class="identifier">Lexer</span><span class="special">></span></code> |
| template constructor now takes an optional parameter specifying the |
| <code class="computeroutput"><span class="identifier">match_flags</span></code> to be used |
| for table generation. Currently, there are the following flags available: |
| |
| <pre class="programlisting"><span class="identifier">match_flags</span><span class="special">::</span><span class="identifier">match_default</span><span class="special">,</span> <span class="comment">// no flags |
| </span><span class="identifier">match_flags</span><span class="special">::</span><span class="identifier">match_not_dot_newline</span><span class="special">,</span> <span class="comment">// the regex '.' doesn't match newlines |
| </span><span class="identifier">match_flags</span><span class="special">::</span><span class="identifier">match_icase</span> <span class="comment">// all matching operations are case insensitive |
| </span></pre> |
| If no parameter is passed to the constructor, <code class="computeroutput"><span class="identifier">match_flags</span><span class="special">::</span><span class="identifier">match_default</span></code> |
| is used, i.e. the <code class="computeroutput"><span class="special">.</span></code> matches |
| newlines and matching is case sensitive. |
| </li> |
| <li class="listitem"> |
| The <code class="computeroutput"><span class="identifier">char_</span><span class="special">()</span></code> |
| and <code class="computeroutput"><span class="identifier">string</span><span class="special">()</span></code> |
| placeholders can now be used for token definitions and are synonymous |
| with <code class="computeroutput"><span class="identifier">token_def</span></code>. |
| </li> |
| <li class="listitem"> |
| Lexer semantic actions now have to conform to a changed interface (see |
| <a class="link" href="../lex/abstracts/lexer_semantic_actions.html" title="Lexer Semantic Actions">Lexer Semantic |
| Actions</a> for details). |
| </li> |
| <li class="listitem"> |
| Added placeholder symbols usable from the inside of lexer semantic actions |
| while using Phoenix: <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">_start</span></code>, |
| <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">_end</span></code>, <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">_eoi</span></code>, |
| <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">_state</span></code>, <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">_val</span></code>, |
| and <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">_pass</span></code> (see <a class="link" href="../lex/abstracts/lexer_semantic_actions.html" title="Lexer Semantic Actions">Lexer |
| Semantic Actions</a> for more details). |
| </li> |
| <li class="listitem"> |
| Added (lazy) support functions usable from the inside of lexer semantic |
| actions while using Phoenix: <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">more</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">less</span><span class="special">()</span></code>, and <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lookahead</span><span class="special">()</span></code> (see <a class="link" href="../lex/abstracts/lexer_semantic_actions.html" title="Lexer Semantic Actions">Lexer |
| Semantic Actions</a> for more details). |
| </li> |
| <li class="listitem"> |
| Removed <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">omitted</span></code> in favor of <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">omit</span></code> |
| to unify the overall interface. |
| </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> |
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