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gh-1178: Fix indentation in the argument clinic page (#1180)
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@ezio-melotti
ezio-melotti committed Oct 9, 2023
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278 changes: 139 additions & 139 deletions development-tools/clinic.rst
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Expand Up @@ -290,14 +290,14 @@ For this tutorial, we'll be using
If the call to the :c:func:`!PyArg_Parse*` function uses any of the
following format units...:

.. code-block:: none
.. code-block:: none
O&
O!
es
es#
et
et#
O&
O!
es
es#
et
et#
... or if it has multiple calls to :c:func:`PyArg_ParseTuple`,
you should choose a different function.
Expand Down Expand Up @@ -861,61 +861,61 @@ the same converters.
All arguments to Argument Clinic converters are keyword-only.
All Argument Clinic converters accept the following arguments:

*c_default*
The default value for this parameter when defined in C.
Specifically, this will be the initializer for the variable declared
in the "parse function". See :ref:`the section on default values <default_values>`
for how to use this.
Specified as a string.
*c_default*
The default value for this parameter when defined in C.
Specifically, this will be the initializer for the variable declared
in the "parse function". See :ref:`the section on default values <default_values>`
for how to use this.
Specified as a string.

*annotation*
The annotation value for this parameter. Not currently supported,
because :pep:`8` mandates that the Python library may not use
annotations.
*annotation*
The annotation value for this parameter. Not currently supported,
because :pep:`8` mandates that the Python library may not use
annotations.

*unused*
Wrap the argument with :c:macro:`Py_UNUSED` in the impl function signature.
*unused*
Wrap the argument with :c:macro:`Py_UNUSED` in the impl function signature.

In addition, some converters accept additional arguments. Here is a list
of these arguments, along with their meanings:

*accept*
A set of Python types (and possibly pseudo-types);
this restricts the allowable Python argument to values of these types.
(This is not a general-purpose facility; as a rule it only supports
specific lists of types as shown in the legacy converter table.)
*accept*
A set of Python types (and possibly pseudo-types);
this restricts the allowable Python argument to values of these types.
(This is not a general-purpose facility; as a rule it only supports
specific lists of types as shown in the legacy converter table.)

To accept ``None``, add ``NoneType`` to this set.
To accept ``None``, add ``NoneType`` to this set.

*bitwise*
Only supported for unsigned integers. The native integer value of this
Python argument will be written to the parameter without any range checking,
even for negative values.
*bitwise*
Only supported for unsigned integers. The native integer value of this
Python argument will be written to the parameter without any range checking,
even for negative values.

*converter*
Only supported by the ``object`` converter. Specifies the name of a
:ref:`C "converter function" <o_ampersand>`
to use to convert this object to a native type.
*converter*
Only supported by the ``object`` converter. Specifies the name of a
:ref:`C "converter function" <o_ampersand>`
to use to convert this object to a native type.

*encoding*
Only supported for strings. Specifies the encoding to use when converting
this string from a Python str (Unicode) value into a C ``char *`` value.
*encoding*
Only supported for strings. Specifies the encoding to use when converting
this string from a Python str (Unicode) value into a C ``char *`` value.


*subclass_of*
Only supported for the ``object`` converter. Requires that the Python
value be a subclass of a Python type, as expressed in C.
*subclass_of*
Only supported for the ``object`` converter. Requires that the Python
value be a subclass of a Python type, as expressed in C.

*type*
Only supported for the ``object`` and ``self`` converters. Specifies
the C type that will be used to declare the variable. Default value is
``"PyObject *"``.
*type*
Only supported for the ``object`` and ``self`` converters. Specifies
the C type that will be used to declare the variable. Default value is
``"PyObject *"``.

*zeroes*
Only supported for strings. If true, embedded NUL bytes (``'\\0'``) are
permitted inside the value. The length of the string will be passed in
to the impl function, just after the string parameter, as a parameter named
``<parameter_name>_length``.
*zeroes*
Only supported for strings. If true, embedded NUL bytes (``'\\0'``) are
permitted inside the value. The length of the string will be passed in
to the impl function, just after the string parameter, as a parameter named
``<parameter_name>_length``.

Please note, not every possible combination of arguments will work.
Usually these arguments are implemented by specific :c:func:`PyArg_ParseTuple`
Expand Down Expand Up @@ -1643,63 +1643,63 @@ previous configuration.
``output preset`` sets Clinic's output to one of several built-in
preset configurations, as follows:

``block``
Clinic's original starting configuration. Writes everything
immediately after the input block.

Suppress the ``parser_prototype``
and ``docstring_prototype``, write everything else to ``block``.

``file``
Designed to write everything to the "clinic file" that it can.
You then ``#include`` this file near the top of your file.
You may need to rearrange your file to make this work, though
usually this just means creating forward declarations for various
``typedef`` and ``PyTypeObject`` definitions.

Suppress the ``parser_prototype``
and ``docstring_prototype``, write the ``impl_definition`` to
``block``, and write everything else to ``file``.

The default filename is ``"{dirname}/clinic/{basename}.h"``.

``buffer``
Save up most of the output from Clinic, to be written into
your file near the end. For Python files implementing modules
or builtin types, it's recommended that you dump the buffer
just above the static structures for your module or
builtin type; these are normally very near the end. Using
``buffer`` may require even more editing than ``file``, if
your file has static ``PyMethodDef`` arrays defined in the
middle of the file.

Suppress the ``parser_prototype``, ``impl_prototype``,
and ``docstring_prototype``, write the ``impl_definition`` to
``block``, and write everything else to ``file``.

``two-pass``
Similar to the ``buffer`` preset, but writes forward declarations to
the ``two-pass`` buffer, and definitions to the ``buffer``.
This is similar to the ``buffer`` preset, but may require
less editing than ``buffer``. Dump the ``two-pass`` buffer
near the top of your file, and dump the ``buffer`` near
the end just like you would when using the ``buffer`` preset.

Suppresses the ``impl_prototype``, write the ``impl_definition``
to ``block``, write ``docstring_prototype``, ``methoddef_define``,
and ``parser_prototype`` to ``two-pass``, write everything else
to ``buffer``.

``partial-buffer``
Similar to the ``buffer`` preset, but writes more things to ``block``,
only writing the really big chunks of generated code to ``buffer``.
This avoids the definition-before-use problem of ``buffer`` completely,
at the small cost of having slightly more stuff in the block's output.
Dump the ``buffer`` near the end, just like you would when using
the ``buffer`` preset.

Suppresses the ``impl_prototype``, write the ``docstring_definition``
and ``parser_definition`` to ``buffer``, write everything else to ``block``.
``block``
Clinic's original starting configuration. Writes everything
immediately after the input block.

Suppress the ``parser_prototype``
and ``docstring_prototype``, write everything else to ``block``.

``file``
Designed to write everything to the "clinic file" that it can.
You then ``#include`` this file near the top of your file.
You may need to rearrange your file to make this work, though
usually this just means creating forward declarations for various
``typedef`` and ``PyTypeObject`` definitions.

Suppress the ``parser_prototype``
and ``docstring_prototype``, write the ``impl_definition`` to
``block``, and write everything else to ``file``.

The default filename is ``"{dirname}/clinic/{basename}.h"``.

``buffer``
Save up most of the output from Clinic, to be written into
your file near the end. For Python files implementing modules
or builtin types, it's recommended that you dump the buffer
just above the static structures for your module or
builtin type; these are normally very near the end. Using
``buffer`` may require even more editing than ``file``, if
your file has static ``PyMethodDef`` arrays defined in the
middle of the file.

Suppress the ``parser_prototype``, ``impl_prototype``,
and ``docstring_prototype``, write the ``impl_definition`` to
``block``, and write everything else to ``file``.

``two-pass``
Similar to the ``buffer`` preset, but writes forward declarations to
the ``two-pass`` buffer, and definitions to the ``buffer``.
This is similar to the ``buffer`` preset, but may require
less editing than ``buffer``. Dump the ``two-pass`` buffer
near the top of your file, and dump the ``buffer`` near
the end just like you would when using the ``buffer`` preset.

Suppresses the ``impl_prototype``, write the ``impl_definition``
to ``block``, write ``docstring_prototype``, ``methoddef_define``,
and ``parser_prototype`` to ``two-pass``, write everything else
to ``buffer``.

``partial-buffer``
Similar to the ``buffer`` preset, but writes more things to ``block``,
only writing the really big chunks of generated code to ``buffer``.
This avoids the definition-before-use problem of ``buffer`` completely,
at the small cost of having slightly more stuff in the block's output.
Dump the ``buffer`` near the end, just like you would when using
the ``buffer`` preset.

Suppresses the ``impl_prototype``, write the ``docstring_definition``
and ``parser_definition`` to ``buffer``, write everything else to ``block``.

The third new directive is ``destination``:

Expand All @@ -1721,44 +1721,44 @@ This creates a new destination with name ``<name>`` and type ``<type>``.

There are five destination types:

``suppress``
Throws the text away.
``suppress``
Throws the text away.

``block``
Writes the text to the current block. This is what Clinic
originally did.
``block``
Writes the text to the current block. This is what Clinic
originally did.

``buffer``
A simple text buffer, like the "buffer" builtin destination above.
``buffer``
A simple text buffer, like the "buffer" builtin destination above.

``file``
A text file. The file destination takes an extra argument,
a template to use for building the filename, like so:
``file``
A text file. The file destination takes an extra argument,
a template to use for building the filename, like so::

destination <name> new <type> <file_template>
destination <name> new <type> <file_template>

The template can use three strings internally that will be replaced
by bits of the filename:
The template can use three strings internally that will be replaced
by bits of the filename:

{path}
The full path to the file, including directory and full filename.
{dirname}
The name of the directory the file is in.
{basename}
Just the name of the file, not including the directory.
{basename_root}
Basename with the extension clipped off
(everything up to but not including the last '.').
{basename_extension}
The last '.' and everything after it. If the basename
does not contain a period, this will be the empty string.
``{path}``
The full path to the file, including directory and full filename.
``{dirname}``
The name of the directory the file is in.
``{basename}``
Just the name of the file, not including the directory.
``{basename_root}``
Basename with the extension clipped off
(everything up to but not including the last '.').
``{basename_extension}``
The last '.' and everything after it. If the basename
does not contain a period, this will be the empty string.

If there are no periods in the filename, {basename} and {filename}
are the same, and {extension} is empty. "{basename}{extension}"
is always exactly the same as "{filename}"."
If there are no periods in the filename, ``{basename}`` and ``{filename}``
are the same, and ``{extension}`` is empty. ``{basename}{extension}``
is always exactly the same as ``{filename}``.

``two-pass``
A two-pass buffer, like the "two-pass" builtin destination above.
``two-pass``
A two-pass buffer, like the "two-pass" builtin destination above.


The ``clear`` subcommand works like this:
Expand All @@ -1784,11 +1784,11 @@ The fourth new directive is ``set``:

Both of these support two format strings:

``{block comment start}``
Turns into the string ``/*``, the start-comment text sequence for C files.
``{block comment start}``
Turns into the string ``/*``, the start-comment text sequence for C files.

``{block comment end}``
Turns into the string ``*/``, the end-comment text sequence for C files.
``{block comment end}``
Turns into the string ``*/``, the end-comment text sequence for C files.

The final new directive is one you shouldn't need to use directly,
called ``preserve``:
Expand Down

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