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.. _using-code-templates:
Using Code Templates
--------------------
.. _template:
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
:ref:`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:
insert-template
^^^^^^^^^^^^^^^
The ``insert-template`` node includes the code template identified by the
name attribute, and it can be a child of the :ref:`inject-code`,
:ref:`conversion-rule`, :ref:`template`, ``custom-constructor``
or ``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 :ref:`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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