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| <td class="back"><a id="top"></a><a href="s4.3.e.html" rel="prev"><< §4.3.(e) Fragile callin binding</a></td> |
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| <div class="breadcrumb"><a class="nav" href="s4.html" rel="section">§4 Callin Binding</a> > <a class="nav" href="s4.3.html" rel="section">§4.3 Base calls</a></div> |
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| <h4 class="subsect">§4.3.(f) <span class="title">Base super calls</span><a class="img" href="s4.3.f.html" title="PermaLink to (f) Base super calls"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png" |
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| <p>If a callin method <code>rm</code> is bound to a base method <code>B1.m</code> |
| that in turn overrides an inherited method <code>B0.m</code> |
| (<code>B0</code> is a super class of <code>B1</code>), |
| the callin method may use a special form of a base call denoted as |
| |
| </p> |
| <div class="listing plain"><pre><strong>base.super</strong>.rm();</pre></div> |
| <p>Such base super call invokes the super method of the bound base method, |
| here <code>B0.m</code>. This invocation is not affected by any further callin binding. |
| |
| </p> |
| <p>A base super call bypasses both the original method <code>B1.m</code> and |
| also other callin bindings that would be triggered by a regular base call. |
| For this reason any application of this construct is flagged by a decapsulation warning |
| (see <a href="s3.4.html" title="§3.4 Overriding access restrictions" |
| class="sect">§3.4</a>). |
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| <div class="breadcrumb"><a class="nav" href="s4.html" rel="section">§4 Callin Binding</a> > <a class="nav" href="s4.3.html" rel="section">§4.3 Base calls</a></div> |
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| width="88" /></a><address>© Stephan Herrmann, Christine Hundt, Marco Mosconi</address> |
| OT/J version 1.3 — last modified: 2010-05-18 |
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