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| <td class="back"><a id="top"></a><a href="s4.3.a.html" rel="prev"><< §4.3.(a) Syntax</a></td> |
| <td class="top"><a href="index.html" rel="contents">↑ Table of Contents ↑</a></td> |
| <td class="next"><a href="s4.3.c.html" rel="next">§4.3.(c) Duplicate base call >></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> |
| <div class="subsect depth3" id="s4.3.b"> |
| <h4 class="subsect">§4.3.(b) <span class="title">Missing base call</span><a class="img" href="s4.3.b.html" |
| title="PermaLink to (b) Missing base call"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png" |
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| <p>For each callin method, the compiler uses some flow analysis to check whether |
| a base call will be invoked on each path of execution (analysis is very similar |
| to the analysis for definite assignment regarding final variables - |
| <a href="http://java.sun.com/docs/books/jls/third_edition/html/defAssign.html" |
| class="ext">JLS §16</a>). |
| The compiler will issue a warning if a base call is missing either |
| on each path (definitely missing) or on some paths (potentially missing). |
| Instead of directly invoking a base call, a callin method may also call |
| its explicit or implicit super version using <code>super.m()</code> or <code>tsuper.m()</code> (see <a href="s1.3.1.f.html" title="§1.3.1.(f) tsuper" class="sect">§1.3.1.(f)</a>). |
| In this case the flow analysis will transitively include the called super/tsuper version. |
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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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| OT/J version 1.3 — last modified: 2010-06-08 |
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