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diff --git a/libs/phoenix/doc/html/phoenix/lazy_list/implementation_details.html b/libs/phoenix/doc/html/phoenix/lazy_list/implementation_details.html new file mode 100644 index 000000000..0611157ce --- /dev/null +++ b/libs/phoenix/doc/html/phoenix/lazy_list/implementation_details.html @@ -0,0 +1,292 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Implementation Details</title> +<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> +<link rel="home" href="../../index.html" title="Chapter 1. Phoenix 3.2.0"> +<link rel="up" href="../lazy_list.html" title="Lazy List"> +<link rel="prev" href="exceptions.html" title="Exceptions"> +<link rel="next" href="testing.html" title="Testing"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table cellpadding="2" width="100%"><tr> +<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> +<td align="center"><a href="../../../../../../index.html">Home</a></td> +<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td> +<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> +<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> +<td align="center"><a href="../../../../../../more/index.htm">More</a></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="exceptions.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../lazy_list.html"><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="testing.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="section"> +<div class="titlepage"><div><div><h3 class="title"> +<a name="phoenix.lazy_list.implementation_details"></a><a class="link" href="implementation_details.html" title="Implementation Details">Implementation + Details</a> +</h3></div></div></div> +<h3> +<a name="phoenix.lazy_list.implementation_details.h0"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.introduction"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.introduction">Introduction</a> + </h3> +<p> + The implementation has depended on close study of the existing code of <a href="http://cgi.di.uoa.gr/~smaragd/fc++/" target="_top">FC++</a>. The <a href="http://people.cs.umass.edu/~yannis/fc++/New/new_list_implementation.html" target="_top">FC++ + List Implementation</a> is a carefully crafted code which allows for + efficient processing of a number of different cases. In particular it makes + use of the <a href="http://people.cs.umass.edu/~yannis/fc++/New/reusers.html" target="_top">FC++ + Reuser Implementation</a> for processing of repetitive evaluations. + </p> +<p> + <a href="http://cgi.di.uoa.gr/~smaragd/fc++/" target="_top">FC++</a> uses a combination + of polymorphic and single type functions which can be passed as arguments + to other functions. + </p> +<p> + The implementation of list<T> has needed new implementations of the + strategy using the facilities of Boost Phoenix and also Boost Function. It + turns out that a combination of both can be used to meet the needs of list<T>. + </p> +<p> + The fact that the functions are defined by boost::phoenix::function means + that they work with phoenix arguments such as 'arg1'. This is the fact which + ensures the flexibility needed for the user to build new functions as needed. + </p> +<h3> +<a name="phoenix.lazy_list.implementation_details.h1"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.fc___legacy"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.fc___legacy">FC++ legacy</a> + </h3> +<p> + The <a href="http://people.cs.umass.edu/~yannis/fc++/New/new_list_implementation.html" target="_top">FC++ + List Implementation</a> and the <a href="http://people.cs.umass.edu/~yannis/fc++/New/reusers.html" target="_top">FC++ + Reuser Implementation</a> have been followed very closely in building + this code. The version used as the starting point was the <a href="http://cgi.di.uoa.gr/~smaragd/fc++/boostpaper/" target="_top">Boost + FC++</a> version. + </p> +<h3> +<a name="phoenix.lazy_list.implementation_details.h2"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.polymorphic_function_types"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.polymorphic_function_types">Polymorphic + Function Types</a> + </h3> +<p> + Functions are implemented as a struct within namespace impl. For an example + funcion 'x' the type is defined like this: + </p> +<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">function</span><span class="special"><</span><span class="identifier">impl</span><span class="special">::</span><span class="identifier">X</span><span class="special">></span> <span class="identifier">X</span><span class="special">;</span> +<span class="identifier">X</span> <span class="identifier">x</span> +</pre> +<p> + This alternative will work to provide a function 'x' but it is not then possible + to pass it as an argument. + </p> +<pre class="programlisting"><span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE</span><span class="special">(</span><span class="identifier">x</span><span class="special">,</span> <span class="identifier">impl</span><span class="special">::</span><span class="identifier">X</span><span class="special">,</span> <span class="number">1</span><span class="special">)</span> +</pre> +<h4> +<a name="phoenix.lazy_list.implementation_details.h3"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.implementation_example"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.implementation_example">Implementation + Example</a> + </h4> +<p> + This example implements id() which simply returns its argument: + </p> +<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">impl</span> <span class="special">{</span> + + <span class="keyword">struct</span> <span class="identifier">Id</span> + <span class="special">{</span> + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span> + + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">This</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">A0</span><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">result</span><span class="special"><</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">A0</span><span class="special">)></span> + <span class="special">:</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">remove_reference</span><span class="special"><</span><span class="identifier">A0</span><span class="special">></span> + <span class="special">{};</span> + + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">A0</span><span class="special">></span> + <span class="identifier">A0</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">A0</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">a0</span><span class="special">)</span> <span class="keyword">const</span> + <span class="special">{</span> + <span class="keyword">return</span> <span class="identifier">a0</span><span class="special">;</span> + <span class="special">}</span> + + <span class="special">};</span> + +<span class="special">}</span> + +<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">function</span><span class="special"><</span><span class="identifier">impl</span><span class="special">::</span><span class="identifier">Id</span><span class="special">></span> <span class="identifier">Id</span><span class="special">;</span> +<span class="identifier">Id</span> <span class="identifier">id</span><span class="special">;</span> +</pre> +<h3> +<a name="phoenix.lazy_list.implementation_details.h4"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.functions_with_defined_return_type"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.functions_with_defined_return_type">Functions + with defined return type</a> + </h3> +<p> + Sometimes it is necessary to define a function using a templated struct, + where the template parameter type defines the return type. + </p> +<h4> +<a name="phoenix.lazy_list.implementation_details.h5"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.example_with_one_argument"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.example_with_one_argument">Example + with one argument</a> + </h4> +<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">impl</span> <span class="special">{</span> + + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Result</span><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">what</span> <span class="special">{</span> + + <span class="keyword">typedef</span> <span class="identifier">Result</span> <span class="identifier">result_type</span><span class="special">;</span> + + <span class="identifier">Result</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Result</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">r</span><span class="special">)</span> <span class="keyword">const</span> + <span class="special">{</span> + <span class="keyword">return</span> <span class="identifier">r</span><span class="special">;</span> + <span class="special">}</span> + <span class="special">};</span> + +<span class="special">}</span> + +<span class="identifier">boost</span><span class="special">::</span><span class="identifier">function1</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span> <span class="special">></span> <span class="identifier">what_int</span> <span class="special">=</span> <span class="identifier">impl</span><span class="special">::</span><span class="identifier">what</span><span class="special"><</span><span class="keyword">int</span><span class="special">>();</span> +<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">function1</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">fun1_int_int</span><span class="special">;</span> +<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">function</span><span class="special"><</span><span class="identifier">fun1_int_int</span><span class="special">></span> <span class="identifier">What_arg</span><span class="special">;</span> +<span class="identifier">What_arg</span> <span class="identifier">what_arg</span><span class="special">(</span><span class="identifier">what_int</span><span class="special">);</span> +</pre> +<h4> +<a name="phoenix.lazy_list.implementation_details.h6"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.example_with_zero_arguments"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.example_with_zero_arguments">Example + with zero arguments</a> + </h4> +<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">impl</span> <span class="special">{</span> + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Result</span><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">what0</span> <span class="special">{</span> + + <span class="keyword">typedef</span> <span class="identifier">Result</span> <span class="identifier">result_type</span><span class="special">;</span> + + <span class="identifier">Result</span> <span class="keyword">operator</span><span class="special">()()</span> <span class="keyword">const</span> + <span class="special">{</span> + <span class="keyword">return</span> <span class="identifier">Result</span><span class="special">(</span><span class="number">100</span><span class="special">);</span> + <span class="special">}</span> + + <span class="special">};</span> +<span class="special">}</span> + +<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">function0</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">fun0_int</span><span class="special">;</span> +<span class="identifier">boost</span><span class="special">::</span><span class="identifier">function0</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">what0_int</span> <span class="special">=</span> <span class="identifier">impl</span><span class="special">::</span><span class="identifier">what0</span><span class="special"><</span><span class="keyword">int</span><span class="special">>();</span> +<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">function</span><span class="special"><</span><span class="identifier">fun0_int</span><span class="special">></span> <span class="identifier">What0_arg</span><span class="special">;</span> +<span class="identifier">What0_arg</span> <span class="identifier">what0_arg</span><span class="special">(</span><span class="identifier">what0_int</span><span class="special">);</span> +</pre> +<h3> +<a name="phoenix.lazy_list.implementation_details.h7"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.list_generation_implementation"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.list_generation_implementation">List + Generation Implementation</a> + </h3> +<p> + The implementation of the function + </p> +<pre class="programlisting"><span class="identifier">enum_from</span><span class="special">(</span><span class="number">1</span><span class="special">)</span> +</pre> +<p> + requires a functor which will evaluate the successive numbers on demand. + The code from <a href="http://cgi.di.uoa.gr/~smaragd/fc++/" target="_top">FC++</a> + has been reimplemented using internal functors as follows. + </p> +<p> + This code has to carefully manipulate the input type T to construct the result + type which is a list. + </p> +<p> + The code in EFH is used to build a series of objects which each add one element + to the list and return the function which will add the next element. That + only gets called when it is needed. + </p> +<pre class="programlisting"> <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">EFH</span> + <span class="special">{</span> + <span class="keyword">mutable</span> <span class="identifier">T</span> <span class="identifier">x</span><span class="special">;</span> + <span class="identifier">EFH</span><span class="special">(</span> <span class="keyword">const</span> <span class="identifier">T</span><span class="special">&</span> <span class="identifier">xx</span><span class="special">)</span> <span class="special">:</span> <span class="identifier">x</span><span class="special">(</span><span class="identifier">xx</span><span class="special">)</span> <span class="special">{}</span> + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">></span> <span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span> + + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">This</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">TT</span><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">result</span><span class="special"><</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">TT</span><span class="special">)></span> + <span class="special">{</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">UseList</span><span class="special">::</span><span class="keyword">template</span> + <span class="identifier">List</span><span class="special"><</span><span class="identifier">TT</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">LType</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">result_of</span><span class="special">::</span> + <span class="identifier">ListType</span><span class="special"><</span><span class="identifier">LType</span><span class="special">>::</span><span class="identifier">delay_result_type</span> <span class="identifier">type</span><span class="special">;</span> + <span class="special">};</span> + <span class="keyword">typename</span> <span class="identifier">result</span><span class="special"><</span><span class="identifier">EFH</span><span class="special">(</span><span class="identifier">T</span><span class="special">)>::</span><span class="identifier">type</span> <span class="keyword">operator</span><span class="special">()()</span> <span class="keyword">const</span> <span class="special">{</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">UseList</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">List</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">LType</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">ListType</span><span class="special"><</span><span class="identifier">LType</span><span class="special">>::</span> + <span class="identifier">delay_result_type</span> <span class="identifier">result_type</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">function0</span><span class="special"><</span><span class="identifier">result_type</span><span class="special">></span> <span class="identifier">fun1_R_TTT</span><span class="special">;</span> + <span class="special">++</span><span class="identifier">x</span><span class="special">;</span> + <span class="identifier">fun1_R_TTT</span> <span class="identifier">efh_R_TTT</span> <span class="special">=</span> <span class="identifier">EFH</span><span class="special"><</span><span class="identifier">T</span><span class="special">>(</span><span class="identifier">x</span><span class="special">);</span> + <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">function</span><span class="special"><</span><span class="identifier">fun1_R_TTT</span><span class="special">></span> <span class="identifier">EFH_R_T</span><span class="special">;</span> + <span class="identifier">EFH_R_T</span> <span class="identifier">efh_R_T</span><span class="special">(</span><span class="identifier">efh_R_TTT</span><span class="special">);</span> +<span class="preprocessor">#ifndef</span> <span class="identifier">BOOST_PHOENIX_NO_LAZY_EXCEPTIONS</span> + <span class="keyword">if</span> <span class="special">(</span><span class="identifier">x</span> <span class="special">></span> <span class="identifier">BOOST_PHOENIX_FUNCTION_MAX_LAZY_LIST_LENGTH</span><span class="special">)</span> + <span class="keyword">throw</span> <span class="identifier">lazy_exception</span><span class="special">(</span><span class="string">"Running away in EFH!!"</span><span class="special">);</span> +<span class="preprocessor">#endif</span> + <span class="keyword">return</span> <span class="identifier">cons</span><span class="special">(</span> <span class="identifier">x</span><span class="special">-</span><span class="number">1</span><span class="special">,</span> <span class="identifier">efh_R_T</span><span class="special">()</span> <span class="special">);</span> + <span class="special">}</span> + <span class="special">};</span> + + <span class="keyword">struct</span> <span class="identifier">Enum_from</span> <span class="special">{</span> + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">></span> <span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span> + + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">This</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">result</span><span class="special"><</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">T</span><span class="special">)></span> + <span class="special">{</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">remove_reference</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">TT</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">remove_const</span><span class="special"><</span><span class="identifier">TT</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">TTT</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">UseList</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">List</span><span class="special"><</span><span class="identifier">TTT</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">LType</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">ListType</span><span class="special"><</span><span class="identifier">LType</span><span class="special">>::</span> + <span class="identifier">delay_result_type</span> <span class="identifier">type</span><span class="special">;</span> + <span class="special">};</span> + + <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> + <span class="keyword">typename</span> <span class="identifier">result</span><span class="special"><</span><span class="identifier">Enum_from</span><span class="special">(</span><span class="identifier">T</span><span class="special">)>::</span><span class="identifier">type</span> <span class="keyword">operator</span><span class="special">()</span> + <span class="special">(</span><span class="keyword">const</span> <span class="identifier">T</span> <span class="special">&</span> <span class="identifier">x</span><span class="special">)</span> <span class="keyword">const</span> + <span class="special">{</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">remove_reference</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">TT</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">remove_const</span><span class="special"><</span><span class="identifier">TT</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">TTT</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">UseList</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">List</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">LType</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">ListType</span><span class="special"><</span><span class="identifier">LType</span><span class="special">>::</span> + <span class="identifier">delay_result_type</span> <span class="identifier">result_type</span><span class="special">;</span> + <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">function0</span><span class="special"><</span><span class="identifier">result_type</span><span class="special">></span> <span class="identifier">fun1_R_TTT</span><span class="special">;</span> + <span class="identifier">fun1_R_TTT</span> <span class="identifier">efh_R_TTT</span> <span class="special">=</span> <span class="identifier">EFH</span><span class="special"><</span><span class="identifier">TTT</span><span class="special">>(</span><span class="identifier">x</span><span class="special">);</span> + <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">function</span><span class="special"><</span><span class="identifier">fun1_R_TTT</span><span class="special">></span> <span class="identifier">EFH_R_T</span><span class="special">;</span> + <span class="identifier">EFH_R_T</span> <span class="identifier">efh_R_T</span><span class="special">(</span><span class="identifier">efh_R_TTT</span><span class="special">);</span> + <span class="comment">//std::cout << "enum_from (" << x << ")" << std::endl;</span> + <span class="keyword">return</span> <span class="identifier">efh_R_T</span><span class="special">();</span> + <span class="special">}</span> + <span class="special">};</span> +</pre> +<p> + Similar code is used in the related functors + </p> +<pre class="programlisting"><span class="identifier">enum_from_to</span> +<span class="identifier">filter</span> +</pre> +<h3> +<a name="phoenix.lazy_list.implementation_details.h8"></a> + <span class="phrase"><a name="phoenix.lazy_list.implementation_details.conclusion"></a></span><a class="link" href="implementation_details.html#phoenix.lazy_list.implementation_details.conclusion">Conclusion</a> + </h3> +<p> + These implementation mechanisms have been carried through consistently in + the implementation. + </p> +</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 © 2002-2005, 2010, 2014, 2015 Joel de Guzman, Dan Marsden, Thomas + Heller, John Fletcher<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> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="exceptions.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../lazy_list.html"><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="testing.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |