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.. _using-code-templates:
Using Code Templates
--------------------
template
^^^^^^^^
The template node registers a template that can be used to avoid duplicate
code when extending the generated code, and it is a child of the typesystem
node.
.. code-block:: xml
<typesystem>
<template name="my_template">
// the code
</template>
</typesystem>
Use the insert-template node to insert the template code (identified by the
template's ``name`` attribute) into the generated code base.
insert-template
^^^^^^^^^^^^^^^
The insert-template node includes the code template identified by the name
attribute, and it can be a child of the inject-code, conversion-rule, template,
custom-constructor and custom-destructor nodes.
.. code-block:: xml
<inject-code class="target" position="beginning">
<insert-template name="my_template" />
</inject-code>
Use the replace node to modify the template code.
replace
^^^^^^^
The replace node allows you to modify template code before inserting it into
the generated code, and it can be a child of the insert-template node.
.. code-block:: xml
<insert-template name="my_template">
<replace from="..." to="..." />
</insert-template>
This node will replace the attribute ``from`` with the value pointed by
``to``.
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