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| <a href="TestON-module.html">Package TestON</a> :: |
| <a href="TestON.core-module.html">Package core</a> :: |
| <a href="TestON.core.ast-module.html">Module ast</a> :: |
| Class NodeVisitor |
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| <!-- ==================== CLASS DESCRIPTION ==================== --> |
| <h1 class="epydoc">Class NodeVisitor</h1><p class="nomargin-top"><span class="codelink"><a href="TestON.core.ast-pysrc.html#NodeVisitor">source code</a></span></p> |
| <center> |
| <center> <map id="class_hierarchy_for_nodevisito" name="class_hierarchy_for_nodevisito"> |
| <area shape="rect" id="node1" href="TestON.core.ast.NodeTransformer-class.html" title="NodeTransformer" alt="" coords="5,62,128,87"/> |
| <area shape="rect" id="node2" href="TestON.core.ast.NodeVisitor-class.html" title="NodeVisitor" alt="" coords="21,6,112,31"/> |
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| <p>A node visitor base class that walks the abstract syntax tree and |
| calls a visitor function for every node found. This function may return |
| a value which is forwarded by the `visit` method.</p> |
| <p>This class is meant to be subclassed, with the subclass adding visitor |
| methods.</p> |
| <p>Per default the visitor functions for the nodes are ``'visit_'`` + |
| class name of the node. So a `TryFinally` node visit function would be |
| `visit_TryFinally`. This behavior can be changed by overriding the |
| `visit` method. If no visitor function exists for a node (return value |
| `None`) the `generic_visit` visitor is used instead.</p> |
| <p>Don't use the `NodeVisitor` if you want to apply changes to nodes |
| during traversing. For this a special visitor exists (`NodeTransformer`) |
| that allows modifications.</p> |
| |
| <!-- ==================== INSTANCE METHODS ==================== --> |
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| <span class="summary-type"> </span> |
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| <tr> |
| <td><span class="summary-sig"><a name="visit"></a><span class="summary-sig-name">visit</span>(<span class="summary-sig-arg">self</span>, |
| <span class="summary-sig-arg">node</span>)</span><br /> |
| Visit a node.</td> |
| <td align="right" valign="top"> |
| <span class="codelink"><a href="TestON.core.ast-pysrc.html#NodeVisitor.visit">source code</a></span> |
| |
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| <span class="summary-type"> </span> |
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| <tr> |
| <td><span class="summary-sig"><a name="generic_visit"></a><span class="summary-sig-name">generic_visit</span>(<span class="summary-sig-arg">self</span>, |
| <span class="summary-sig-arg">node</span>)</span><br /> |
| Called if no explicit visitor function exists for a node.</td> |
| <td align="right" valign="top"> |
| <span class="codelink"><a href="TestON.core.ast-pysrc.html#NodeVisitor.generic_visit">source code</a></span> |
| |
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| <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>: |
| <code>__delattr__</code>, |
| <code>__format__</code>, |
| <code>__getattribute__</code>, |
| <code>__hash__</code>, |
| <code>__init__</code>, |
| <code>__new__</code>, |
| <code>__reduce__</code>, |
| <code>__reduce_ex__</code>, |
| <code>__repr__</code>, |
| <code>__setattr__</code>, |
| <code>__sizeof__</code>, |
| <code>__str__</code>, |
| <code>__subclasshook__</code> |
| </p> |
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| <!-- ==================== PROPERTIES ==================== --> |
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| <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>: |
| <code>__class__</code> |
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