1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Struct template and_</title> 6<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="../../proto/reference.html#header.boost.proto.matches_hpp" title="Header <boost/proto/matches.hpp>"> 10<link rel="prev" href="or_/impl.html" title="Struct template impl"> 11<link rel="next" href="and_/impl.html" title="Struct template impl"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> 16<td align="center"><a href="../../../../index.html">Home</a></td> 17<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="or_/impl.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.matches_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="and_/impl.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.proto.and_"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Struct template and_</span></h2> 30<p>boost::proto::and_ — For matching all of a set of grammars. When used as a transform, 31 <code class="computeroutput">proto::and_<></code> applies the transform associated 32 with each grammar in the set and returns the result of the last.</p> 33</div> 34<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 35<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../proto/reference.html#header.boost.proto.matches_hpp" title="Header <boost/proto/matches.hpp>">boost/proto/matches.hpp</a>> 36 37</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span><span class="special">...</span> G<span class="special">></span> 38<span class="keyword">struct</span> <a class="link" href="and_.html" title="Struct template and_">and_</a> <span class="special">:</span> <span class="keyword"></span> <a class="link" href="transform.html" title="Struct template transform">proto::transform</a><and_<G...> > <span class="special">{</span> 39 <span class="comment">// types</span> 40 <span class="keyword">typedef</span> <span class="identifier">and_</span> <a name="boost.proto.and_.proto_grammar"></a><span class="identifier">proto_grammar</span><span class="special">;</span> 41 42 <span class="comment">// member classes/structs/unions</span> 43 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">,</span> <span class="keyword">typename</span> Data<span class="special">></span> 44 <span class="keyword">struct</span> <a class="link" href="and_/impl.html" title="Struct template impl">impl</a> <span class="special">:</span> <span class="keyword"></span> <a class="link" href="transform_impl.html" title="Struct template transform_impl">proto::transform_impl</a>< Expr, State, Data > <span class="special">{</span> 45 <span class="comment">// types</span> 46 <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span><span class="special"><</span><span class="identifier">G</span><sub><span class="identifier">n</span></sub><span class="special">(</span><span class="identifier">Expr</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <span class="identifier">Data</span><span class="special">)</span><span class="special">></span><span class="special">::</span><span class="identifier">type</span> <a class="link" href="and_/impl.html#boost.proto.and_.impl.result_type"><span class="identifier">result_type</span></a><span class="special">;</span> 47 48 <span class="comment">// <a class="link" href="and_/impl.html#id-1_3_33_5_32_2_1_5_5_4-bb">public member functions</a></span> 49 <span class="identifier">result_type</span> <a class="link" href="and_/impl.html#id-1_3_33_5_32_2_1_5_5_4_1-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">impl</span><span class="special">::</span><span class="identifier">expr_param</span><span class="special">,</span> 50 <span class="keyword">typename</span> <span class="identifier">impl</span><span class="special">::</span><span class="identifier">state_param</span><span class="special">,</span> 51 <span class="keyword">typename</span> <span class="identifier">impl</span><span class="special">::</span><span class="identifier">data_param</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> 52 <span class="special">}</span><span class="special">;</span> 53<span class="special">}</span><span class="special">;</span></pre></div> 54<div class="refsect1"> 55<a name="id-1.3.33.5.34.8.4"></a><h2>Description</h2> 56<p> 57 An expression type <code class="computeroutput">E</code> matches 58 <code class="computeroutput">proto::and_<G<sub>0</sub>,G<sub>1</sub>,...G<sub>n</sub>></code> 59 if <code class="computeroutput">E</code> matches all <code class="computeroutput">G<sub>x</sub></code> 60 for <code class="computeroutput">x</code> in <code class="computeroutput">[0,n]</code>. 61 </p> 62<p> 63 When applying 64 <code class="computeroutput">proto::and_<G<sub>0</sub>,G<sub>1</sub>,...G<sub>n</sub>></code> 65 as a transform with an expression <code class="computeroutput">e</code>, state 66 <code class="computeroutput">s</code> and data <code class="computeroutput">d</code>, it is equivalent 67 to <code class="computeroutput">(G<sub>0</sub>()(e, s, d),G<sub>1</sub>()(e, s, d),...G<sub>n</sub>()(e, s, d))</code>. 68 </p> 69<p> 70 The maximun number of template arguments <code class="computeroutput">proto::and_<></code> accepts 71 is controlled by the <code class="computeroutput"><a class="link" href="../../BOOST_PROTO__1_3_33_5_35_4.html" title="Macro BOOST_PROTO_MAX_LOGICAL_ARITY">BOOST_PROTO_MAX_LOGICAL_ARITY</a></code> 72 macro. 73 </p> 74</div> 75</div> 76<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 77<td align="left"></td> 78<td align="right"><div class="copyright-footer">Copyright © 2008 Eric Niebler<p> 79 Distributed under the Boost Software License, Version 1.0. (See accompanying 80 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>) 81 </p> 82</div></td> 83</tr></table> 84<hr> 85<div class="spirit-nav"> 86<a accesskey="p" href="or_/impl.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.matches_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="and_/impl.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 87</div> 88</body> 89</html> 90
