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| <div class="breadcrumb"><a class="nav" href="s9.html" rel="section">§9 Value Dependent Classes</a> > <a class="nav" href="s9.2.html" rel="section">§9.2 Using classes with value parameters</a> > <a class="nav" href="s9.2.2.html" rel="section">§9.2.2 Type conformance</a></div> |
| <div class="subsect depth4" id="s9.2.2.a"> |
| <h4 class="subsect">§9.2.2.(a) <span class="title">Substitutions for type anchors</span><a class="img" href="s9.2.2.a.html" |
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| <p>Only two substitutions are considered for determining anchor identity: |
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| </p> |
| <ol> |
| <li>If a method signature uses <code>this</code> as the anchor of any of its types, |
| type checking an application of this method performs the following substitutions: |
| <br /> |
| A simple <code>this</code> expression is substituted by the actual call target |
| of the method application. |
| <br /> |
| A qualified <code>Outer.this</code> expression is substituted by the corresponding |
| enclosing instance of the call target. |
| </li> |
| <li>Assignments from a <code>final</code> identifier to another <code>final</code> |
| identifier are transitively followed, i.e., if <code>t1, t2</code> are final, |
| after an assignment <code>t1=t2</code> the types <code>C<@t1></code> and |
| <code>C<@t2></code> are considered identical. Otherwise <code>C<@t1></code> |
| and <code>C<@t2></code> are incommensurable. |
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| Attaching an actual parameter to a formal parameter in a method call is also considered |
| as an assignment with respect to this rule. |
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| <div class="breadcrumb"><a class="nav" href="s9.html" rel="section">§9 Value Dependent Classes</a> > <a class="nav" href="s9.2.html" rel="section">§9.2 Using classes with value parameters</a> > <a class="nav" href="s9.2.2.html" rel="section">§9.2.2 Type conformance</a></div> |
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| width="88" /></a><address>© Stephan Herrmann, Christine Hundt, Marco Mosconi</address> |
| OT/J version 1.3.1 — last modified: 2013-05-28 |
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