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24</div>
25<div class="section">
26<div class="titlepage"><div><div><h4 class="title">
27<a name="phoenix.modules.function.adapting_functions"></a><a class="link" href="adapting_functions.html" title="Adapting Functions">Adapting
28 Functions</a>
29</h4></div></div></div>
30<div class="toc"><dl>
31<dt><span class="section"><a href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary">BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY</a></span></dt>
32<dt><span class="section"><a href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function">BOOST_PHOENIX_ADAPT_FUNCTION</a></span></dt>
33<dt><span class="section"><a href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary">BOOST_PHOENIX_ADAPT_CALLABLE_NULLARY</a></span></dt>
34<dt><span class="section"><a href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable">BOOST_PHOENIX_ADAPT_CALLABLE</a></span></dt>
35</dl></div>
36<p>
37 If you want to adapt already existing functions or function objects it
38 will become a repetetive task. Therefor the following boilerplate macros
39 are provided to help you adapt already exsiting functions, thus reducing
40 the need to <a class="link" href="../bind.html" title="Bind">phoenix.modules.bind</a>
41 functions.
42 </p>
43<div class="section">
44<div class="titlepage"><div><div><h5 class="title">
45<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary"></a><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary" title="BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY">BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY</a>
46</h5></div></div></div>
47<h6>
48<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.h0"></a>
49 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.description"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.description">Description</a>
50 </h6>
51<p>
52 <code class="computeroutput"><span class="identifier">BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY</span></code>
53 is a macro that can be used to generate all the necessary boilerplate
54 to make an arbitrary nullary function a lazy function.
55 </p>
56<div class="note"><table border="0" summary="Note">
57<tr>
58<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../doc/src/images/note.png"></td>
59<th align="left">Note</th>
60</tr>
61<tr><td align="left" valign="top"><p>
62 These macros generate no global objects. The resulting lazy functions
63 are real functions that create the lazy function expression object
64 </p></td></tr>
65</table></div>
66<h6>
67<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.h1"></a>
68 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.synopsis"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.synopsis">Synopsis</a>
69 </h6>
70<pre class="programlisting"><span class="identifier">BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY</span><span class="special">(</span>
71 <span class="identifier">RETURN_TYPE</span>
72 <span class="special">,</span> <span class="identifier">LAZY_FUNCTION</span>
73 <span class="special">,</span> <span class="identifier">FUNCTION</span>
74<span class="special">)</span>
75</pre>
76<h6>
77<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.h2"></a>
78 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.semantics"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.semantics">Semantics</a>
79 </h6>
80<p>
81 The above macro generates all necessary code to have a nullary lazy function
82 <code class="computeroutput"><span class="identifier">LAZY_FUNCTION</span></code> which calls
83 the nullary <code class="computeroutput"><span class="identifier">FUNCTION</span></code>
84 that has the return type <code class="computeroutput"><span class="identifier">RETURN_TYPE</span></code>
85 </p>
86<h6>
87<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.h3"></a>
88 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.header"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.header">Header</a>
89 </h6>
90<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</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">adapt_function</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
91</pre>
92<h6>
93<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.h4"></a>
94 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.example"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function_nullary.example">Example</a>
95 </h6>
96<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">demo</span>
97<span class="special">{</span>
98 <span class="keyword">int</span> <span class="identifier">foo</span><span class="special">()</span>
99 <span class="special">{</span>
100 <span class="keyword">return</span> <span class="number">42</span><span class="special">;</span>
101 <span class="special">}</span>
102<span class="special">}</span>
103
104<span class="identifier">BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY</span><span class="special">(</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">foo</span><span class="special">,</span> <span class="identifier">demo</span><span class="special">::</span><span class="identifier">foo</span><span class="special">)</span>
105
106<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
107<span class="special">{</span>
108 <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">placeholders</span><span class="special">::</span><span class="identifier">_1</span><span class="special">;</span>
109
110 <span class="identifier">assert</span><span class="special">((</span><span class="identifier">_1</span> <span class="special">+</span> <span class="identifier">foo</span><span class="special">())(</span><span class="number">1</span><span class="special">)</span> <span class="special">==</span> <span class="number">43</span><span class="special">);</span>
111<span class="special">}</span>
112</pre>
113</div>
114<div class="section">
115<div class="titlepage"><div><div><h5 class="title">
116<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function"></a><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function" title="BOOST_PHOENIX_ADAPT_FUNCTION">BOOST_PHOENIX_ADAPT_FUNCTION</a>
117</h5></div></div></div>
118<h6>
119<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.h0"></a>
120 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.description"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.description">Description</a>
121 </h6>
122<p>
123 <code class="computeroutput"><span class="identifier">BOOST_PHOENIX_ADAPT_FUNCTION</span></code>
124 is a macro that can be used to generate all the necessary boilerplate
125 to make an arbitrary function a lazy function.
126 </p>
127<h6>
128<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.h1"></a>
129 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.synopsis"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.synopsis">Synopsis</a>
130 </h6>
131<pre class="programlisting"><span class="identifier">BOOST_PHOENIX_ADAPT_FUNCTION</span><span class="special">(</span>
132 <span class="identifier">RETURN_TYPE</span>
133 <span class="special">,</span> <span class="identifier">LAZY_FUNCTION</span>
134 <span class="special">,</span> <span class="identifier">FUNCTION</span>
135 <span class="special">,</span> <span class="identifier">FUNCTION_ARITY</span>
136<span class="special">)</span>
137</pre>
138<h6>
139<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.h2"></a>
140 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.semantics"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.semantics">Semantics</a>
141 </h6>
142<p>
143 The above macro generates all necessary code to have a lazy function
144 <code class="computeroutput"><span class="identifier">LAZY_FUNCTION</span></code> which calls
145 <code class="computeroutput"><span class="identifier">FUNCTION</span></code> that has the
146 return type <code class="computeroutput"><span class="identifier">RETURN_TYPE</span></code>
147 with <code class="computeroutput"><span class="identifier">FUNCTION_ARITY</span></code> number
148 of arguments.
149 </p>
150<h6>
151<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.h3"></a>
152 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.header"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.header">Header</a>
153 </h6>
154<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</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">adapt_function</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
155</pre>
156<h6>
157<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.h4"></a>
158 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.example"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_function.example">Example</a>
159 </h6>
160<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">demo</span>
161<span class="special">{</span>
162 <span class="keyword">int</span> <span class="identifier">plus</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">a</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">b</span><span class="special">)</span>
163 <span class="special">{</span>
164 <span class="keyword">return</span> <span class="identifier">a</span> <span class="special">+</span> <span class="identifier">b</span><span class="special">;</span>
165 <span class="special">}</span>
166
167 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
168 <span class="identifier">T</span>
169 <span class="identifier">plus</span><span class="special">(</span><span class="identifier">T</span> <span class="identifier">a</span><span class="special">,</span> <span class="identifier">T</span> <span class="identifier">b</span><span class="special">,</span> <span class="identifier">T</span> <span class="identifier">c</span><span class="special">)</span>
170 <span class="special">{</span>
171 <span class="keyword">return</span> <span class="identifier">a</span> <span class="special">+</span> <span class="identifier">b</span> <span class="special">+</span> <span class="identifier">c</span><span class="special">;</span>
172 <span class="special">}</span>
173<span class="special">}</span>
174
175<span class="identifier">BOOST_PHOENIX_ADAPT_FUNCTION</span><span class="special">(</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">plus</span><span class="special">,</span> <span class="identifier">demo</span><span class="special">::</span><span class="identifier">plus</span><span class="special">,</span> <span class="number">2</span><span class="special">)</span>
176
177<span class="identifier">BOOST_PHOENIX_ADAPT_FUNCTION</span><span class="special">(</span>
178 <span class="keyword">typename</span> <span class="identifier">remove_reference</span><span class="special">&lt;</span><span class="identifier">A0</span><span class="special">&gt;::</span><span class="identifier">type</span>
179 <span class="special">,</span> <span class="identifier">plus</span>
180 <span class="special">,</span> <span class="identifier">demo</span><span class="special">::</span><span class="identifier">plus</span>
181 <span class="special">,</span> <span class="number">3</span>
182<span class="special">)</span>
183
184<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
185<span class="special">{</span>
186 <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">arg_names</span><span class="special">::</span><span class="identifier">arg1</span><span class="special">;</span>
187 <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">arg_names</span><span class="special">::</span><span class="identifier">arg2</span><span class="special">;</span>
188
189 <span class="keyword">int</span> <span class="identifier">a</span> <span class="special">=</span> <span class="number">123</span><span class="special">;</span>
190 <span class="keyword">int</span> <span class="identifier">b</span> <span class="special">=</span> <span class="number">256</span><span class="special">;</span>
191
192 <span class="identifier">assert</span><span class="special">(</span><span class="identifier">plus</span><span class="special">(</span><span class="identifier">arg1</span><span class="special">,</span> <span class="identifier">arg2</span><span class="special">)(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">)</span> <span class="special">==</span> <span class="identifier">a</span><span class="special">+</span><span class="identifier">b</span><span class="special">);</span>
193 <span class="identifier">assert</span><span class="special">(</span><span class="identifier">plus</span><span class="special">(</span><span class="identifier">arg1</span><span class="special">,</span> <span class="identifier">arg2</span><span class="special">,</span> <span class="number">3</span><span class="special">)(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">)</span> <span class="special">==</span> <span class="identifier">a</span><span class="special">+</span><span class="identifier">b</span><span class="special">+</span><span class="number">3</span><span class="special">);</span>
194<span class="special">}</span>
195</pre>
196</div>
197<div class="section">
198<div class="titlepage"><div><div><h5 class="title">
199<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary"></a><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary" title="BOOST_PHOENIX_ADAPT_CALLABLE_NULLARY">BOOST_PHOENIX_ADAPT_CALLABLE_NULLARY</a>
200</h5></div></div></div>
201<h6>
202<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.h0"></a>
203 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.description"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.description">Description</a>
204 </h6>
205<p>
206 <code class="computeroutput"><span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE_NULLARY</span></code>
207 is a macro that can be used to generate all the necessary boilerplate
208 to make an arbitrary nullary function object a lazy function.
209 </p>
210<h6>
211<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.h1"></a>
212 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.synopsis"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.synopsis">Synopsis</a>
213 </h6>
214<pre class="programlisting"><span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE_NULLARY</span><span class="special">(</span>
215 <span class="identifier">LAZY_FUNCTION</span>
216 <span class="special">,</span> <span class="identifier">CALLABLE</span>
217<span class="special">)</span>
218</pre>
219<h6>
220<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.h2"></a>
221 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.semantics"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.semantics">Semantics</a>
222 </h6>
223<p>
224 The above macro generates all necessary code to create <code class="computeroutput"><span class="identifier">LAZY_FUNCTION</span></code> which creates a lazy
225 function object that represents a nullary call to <code class="computeroutput"><span class="identifier">CALLABLE</span></code>.
226 The return type is specified by <code class="computeroutput"><span class="identifier">CALLABLE</span></code>
227 conforming to the <a href="http://www.boost.org/doc/libs/release/libs/utility/utility.htm#result_of" target="_top">Boost.Result
228 Of</a> protocol.
229 </p>
230<h6>
231<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.h3"></a>
232 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.header"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.header">Header</a>
233 </h6>
234<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</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">adapt_callable</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
235</pre>
236<h6>
237<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.h4"></a>
238 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.example"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable_nullary.example">Example</a>
239 </h6>
240<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">demo</span>
241<span class="special">{</span>
242 <span class="keyword">struct</span> <span class="identifier">foo</span>
243 <span class="special">{</span>
244 <span class="keyword">typedef</span> <span class="keyword">int</span> <span class="identifier">result_type</span><span class="special">;</span>
245
246 <span class="identifier">result_type</span> <span class="keyword">operator</span><span class="special">()()</span> <span class="keyword">const</span>
247 <span class="special">{</span>
248 <span class="keyword">return</span> <span class="number">42</span><span class="special">;</span>
249 <span class="special">}</span>
250 <span class="special">}</span>
251<span class="special">}</span>
252
253<span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE_NULLARY</span><span class="special">(</span><span class="identifier">foo</span><span class="special">,</span> <span class="identifier">demo</span><span class="special">::</span><span class="identifier">foo</span><span class="special">)</span>
254
255<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
256<span class="special">{</span>
257 <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">placeholders</span><span class="special">::</span><span class="identifier">_1</span><span class="special">;</span>
258
259 <span class="identifier">assert</span><span class="special">((</span><span class="identifier">_1</span> <span class="special">+</span> <span class="identifier">foo</span><span class="special">())(</span><span class="number">1</span><span class="special">)</span> <span class="special">==</span> <span class="number">43</span><span class="special">);</span>
260<span class="special">}</span>
261</pre>
262</div>
263<div class="section">
264<div class="titlepage"><div><div><h5 class="title">
265<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable"></a><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable" title="BOOST_PHOENIX_ADAPT_CALLABLE">BOOST_PHOENIX_ADAPT_CALLABLE</a>
266</h5></div></div></div>
267<h6>
268<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.h0"></a>
269 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.description"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.description">Description</a>
270 </h6>
271<p>
272 <code class="computeroutput"><span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE</span></code>
273 is a macro that can be used to generate all the necessary boilerplate
274 to make an arbitrary function object a lazy function.
275 </p>
276<h6>
277<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.h1"></a>
278 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.synopsis"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.synopsis">Synopsis</a>
279 </h6>
280<pre class="programlisting"><span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE</span><span class="special">(</span>
281 <span class="identifier">LAZY_FUNCTION</span>
282 <span class="special">,</span> <span class="identifier">FUNCTION_NAME</span>
283 <span class="special">,</span> <span class="identifier">FUNCTION_ARITY</span>
284<span class="special">)</span>
285</pre>
286<h6>
287<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.h2"></a>
288 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.semantics"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.semantics">Semantics</a>
289 </h6>
290<p>
291 The above macro generates all necessary code to create <code class="computeroutput"><span class="identifier">LAZY_FUNCTION</span></code> which creates a lazy
292 function object that represents a call to <code class="computeroutput"><span class="identifier">CALLABLE</span></code>
293 with <code class="computeroutput"><span class="identifier">FUNCTION_ARITY</span></code> arguments.
294 The return type is specified by <code class="computeroutput"><span class="identifier">CALLABLE</span></code>
295 conforming to the <a href="http://www.boost.org/doc/libs/release/libs/utility/utility.htm#result_of" target="_top">Boost.Result
296 Of</a> protocol.
297 </p>
298<h6>
299<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.h3"></a>
300 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.header"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.header">Header</a>
301 </h6>
302<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</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">adapt_callable</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
303</pre>
304<h6>
305<a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.h4"></a>
306 <span><a name="phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.example"></a></span><a class="link" href="adapting_functions.html#phoenix.modules.function.adapting_functions.boost_phoenix_adapt_callable.example">Example</a>
307 </h6>
308<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">demo</span>
309<span class="special">{</span>
310 <span class="keyword">struct</span> <span class="identifier">plus</span>
311 <span class="special">{</span>
312 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">&gt;</span>
313 <span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span>
314
315 <span class="keyword">template</span> <span class="special">&lt;</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">typename</span> <span class="identifier">A1</span><span class="special">&gt;</span>
316 <span class="keyword">struct</span> <span class="identifier">result</span><span class="special">&lt;</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">A0</span><span class="special">,</span> <span class="identifier">A1</span><span class="special">)&gt;</span>
317 <span class="special">:</span> <span class="identifier">remove_reference</span><span class="special">&lt;</span><span class="identifier">A0</span><span class="special">&gt;</span>
318 <span class="special">{};</span>
319
320 <span class="keyword">template</span> <span class="special">&lt;</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">typename</span> <span class="identifier">A1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">A2</span><span class="special">&gt;</span>
321 <span class="keyword">struct</span> <span class="identifier">result</span><span class="special">&lt;</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">A0</span><span class="special">,</span> <span class="identifier">A1</span><span class="special">,</span> <span class="identifier">A2</span><span class="special">)&gt;</span>
322 <span class="special">:</span> <span class="identifier">remove_reference</span><span class="special">&lt;</span><span class="identifier">A0</span><span class="special">&gt;</span>
323 <span class="special">{};</span>
324
325 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">A0</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">A1</span><span class="special">&gt;</span>
326 <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">&amp;</span> <span class="identifier">a0</span><span class="special">,</span> <span class="identifier">A1</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">a1</span><span class="special">)</span> <span class="keyword">const</span>
327 <span class="special">{</span>
328 <span class="keyword">return</span> <span class="identifier">a0</span> <span class="special">+</span> <span class="identifier">a1</span><span class="special">;</span>
329 <span class="special">}</span>
330
331 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">A0</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">A1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">A2</span><span class="special">&gt;</span>
332 <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">&amp;</span> <span class="identifier">a0</span><span class="special">,</span> <span class="identifier">A1</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">a1</span><span class="special">,</span> <span class="identifier">A2</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">a2</span><span class="special">)</span> <span class="keyword">const</span>
333 <span class="special">{</span>
334 <span class="keyword">return</span> <span class="identifier">a0</span> <span class="special">+</span> <span class="identifier">a1</span> <span class="special">+</span> <span class="identifier">a2</span><span class="special">;</span>
335 <span class="special">}</span>
336 <span class="special">};</span>
337<span class="special">}</span>
338
339<span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE</span><span class="special">(</span><span class="identifier">plus</span><span class="special">,</span> <span class="identifier">demo</span><span class="special">::</span><span class="identifier">plus</span><span class="special">,</span> <span class="number">2</span><span class="special">)</span>
340
341<span class="identifier">BOOST_PHOENIX_ADAPT_CALLABLE</span><span class="special">(</span><span class="identifier">plus</span><span class="special">,</span> <span class="identifier">demo</span><span class="special">::</span><span class="identifier">plus</span><span class="special">,</span> <span class="number">3</span><span class="special">)</span>
342
343<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
344<span class="special">{</span>
345 <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">arg_names</span><span class="special">::</span><span class="identifier">arg1</span><span class="special">;</span>
346 <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">arg_names</span><span class="special">::</span><span class="identifier">arg2</span><span class="special">;</span>
347
348 <span class="keyword">int</span> <span class="identifier">a</span> <span class="special">=</span> <span class="number">123</span><span class="special">;</span>
349 <span class="keyword">int</span> <span class="identifier">b</span> <span class="special">=</span> <span class="number">256</span><span class="special">;</span>
350
351 <span class="identifier">assert</span><span class="special">(</span><span class="identifier">plus</span><span class="special">(</span><span class="identifier">arg1</span><span class="special">,</span> <span class="identifier">arg2</span><span class="special">)(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">)</span> <span class="special">==</span> <span class="identifier">a</span><span class="special">+</span><span class="identifier">b</span><span class="special">);</span>
352 <span class="identifier">assert</span><span class="special">(</span><span class="identifier">plus</span><span class="special">(</span><span class="identifier">arg1</span><span class="special">,</span> <span class="identifier">arg2</span><span class="special">,</span> <span class="number">3</span><span class="special">)(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">)</span> <span class="special">==</span> <span class="identifier">a</span><span class="special">+</span><span class="identifier">b</span><span class="special">+</span><span class="number">3</span><span class="special">);</span>
353<span class="special">}</span>
354</pre>
355</div>
356</div>
357<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
358<td align="left"></td>
359<td align="right"><div class="copyright-footer">Copyright &#169; 2002-2005, 2010, 2014, 2015 Joel de Guzman, Dan Marsden, Thomas
360 Heller, John Fletcher<p>
361 Distributed under the Boost Software License, Version 1.0. (See accompanying
362 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>)
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