File: C:/Ruby27-x64/share/doc/ruby/html/Fiddle/Closure/BlockCaller.html
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<h3>Parent</h3>
<p class="link"><a href="../Closure.html">Fiddle::Closure</a>
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<li class="calls-super" ><a href="#method-c-new">::new</a>
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<h1 id="class-Fiddle::Closure::BlockCaller" class="class">
class Fiddle::Closure::BlockCaller
</h1>
<section class="description">
<p>Extends <a href="../Closure.html"><code>Fiddle::Closure</code></a> to allow for building the closure in a block</p>
</section>
<section id="5Buntitled-5D" class="documentation-section">
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<h3>Public Class Methods</h3>
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<div id="method-c-new" class="method-detail ">
<div class="method-heading">
<span class="method-name">new</span><span
class="method-args">(ctype, args, abi = Fiddle::Function::DEFAULT, &block)</span>
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<h2 id="method-c-new-label-Description">Description<span><a href="#method-c-new-label-Description">¶</a> <a href="#top">↑</a></span></h2>
<p>Construct a new <a href="BlockCaller.html"><code>BlockCaller</code></a> object.</p>
<ul><li>
<p><code>ctype</code> is the C type to be returned</p>
</li><li>
<p><code>args</code> are passed the callback</p>
</li><li>
<p><code>abi</code> is the abi of the closure</p>
</li></ul>
<p>If there is an error in preparing the <code>ffi_cif</code> or <code>ffi_prep_closure</code>, then a <a href="../../RuntimeError.html"><code>RuntimeError</code></a> will be raised.</p>
<h2 id="method-c-new-label-Example">Example<span><a href="#method-c-new-label-Example">¶</a> <a href="#top">↑</a></span></h2>
<pre class="ruby"><span class="ruby-identifier">include</span> <span class="ruby-constant">Fiddle</span>
<span class="ruby-identifier">cb</span> = <span class="ruby-constant">Closure</span><span class="ruby-operator">::</span><span class="ruby-constant">BlockCaller</span>.<span class="ruby-identifier">new</span>(<span class="ruby-constant">TYPE_INT</span>, [<span class="ruby-constant">TYPE_INT</span>]) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">one</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">one</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">func</span> = <span class="ruby-constant">Function</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">cb</span>, [<span class="ruby-constant">TYPE_INT</span>], <span class="ruby-constant">TYPE_INT</span>)
</pre>
<div class="method-calls-super">
Calls superclass method
<a href="../Closure.html#method-c-new"><code>Fiddle::Closure::new</code></a>
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<div class="method-source-code" id="new-source">
<pre><span class="ruby-comment"># File ext/fiddle/lib/fiddle/closure.rb, line 35</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span> <span class="ruby-identifier">ctype</span>, <span class="ruby-identifier">args</span>, <span class="ruby-identifier">abi</span> = <span class="ruby-constant">Fiddle</span><span class="ruby-operator">::</span><span class="ruby-constant">Function</span><span class="ruby-operator">::</span><span class="ruby-constant">DEFAULT</span>, <span class="ruby-operator">&</span><span class="ruby-identifier">block</span>
<span class="ruby-keyword">super</span>(<span class="ruby-identifier">ctype</span>, <span class="ruby-identifier">args</span>, <span class="ruby-identifier">abi</span>)
<span class="ruby-ivar">@block</span> = <span class="ruby-identifier">block</span>
<span class="ruby-keyword">end</span></pre>
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<h3>Public Instance Methods</h3>
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<div id="method-i-call" class="method-detail ">
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<span class="method-name">call</span><span
class="method-args">(*args)</span>
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<div class="method-description">
<p>Calls the constructed <a href="BlockCaller.html"><code>BlockCaller</code></a>, with <code>args</code></p>
<p>For an example see <a href="BlockCaller.html#method-c-new"><code>Fiddle::Closure::BlockCaller.new</code></a></p>
<div class="method-source-code" id="call-source">
<pre><span class="ruby-comment"># File ext/fiddle/lib/fiddle/closure.rb, line 44</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">call</span> <span class="ruby-operator">*</span><span class="ruby-identifier">args</span>
<span class="ruby-ivar">@block</span>.<span class="ruby-identifier">call</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>)
<span class="ruby-keyword">end</span></pre>
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