| Message ID | 20240703210144.339530-3-jsnow@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | qapi: convert example sections to qmp-example rST directives | expand |
John Snow <jsnow@redhat.com> writes: > This is a directive that creates a syntactic sugar for creating > "Example" boxes very similar to the ones already used in the bitmaps.rst > document, please see e.g. > https://www.qemu.org/docs/master/interop/bitmaps.html#creation-block-dirty-bitmap-add > > In its simplest form, when a custom title is not needed or wanted, and > the example body is *solely* a QMP example: > > ``` > .. qmp-example:: > > {body} > ``` > > is syntactic sugar for: > > ``` > .. admonition:: Example: > > .. code-block:: QMP > > {body} > ``` > > When a custom, plaintext title that describes the example is desired, > this form: > > ``` > .. qmp-example:: > :title: Defrobnification > > {body} > ``` > > Is syntactic sugar for: > > ``` > .. admonition:: Example: Defrobnification > > .. code-block:: QMP > > {body} > ``` > > Lastly, when Examples are multi-step processes that require non-QMP > exposition, have lengthy titles, or otherwise involve prose with rST > markup (lists, cross-references, etc), the most complex form: > > ``` > .. qmp-example:: > :annotated: > > This example shows how to use `foo-command`:: > > {body} > > For more information, please see `frobnozz`. > ``` > > Is desugared to: > > ``` > .. admonition:: Example: > > This example shows how to use `foo-command`:: > > {body} > > For more information, please see `frobnozz`. > ``` > > Note that :annotated: and :title: options can be combined together, if > desired. > > The primary benefit here being documentation source consistently using > the same directive for all forms of examples to ensure consistent visual > styling, and ensuring all relevant prose is visually grouped alongside > the code literal block. > > Note that as of this commit, the code-block rST syntax "::" does not > apply QMP highlighting; you would need to use ".. code-block:: QMP". The > very next commit changes this behavior to assume all "::" code blocks > within this directive are QMP blocks. > > Signed-off-by: John Snow <jsnow@redhat.com> Acked-by: Markus Armbruster <armbru@redhat.com>
diff --git a/docs/sphinx/qapidoc.py b/docs/sphinx/qapidoc.py index 43dd99e21e6..b0f3917dc5b 100644 --- a/docs/sphinx/qapidoc.py +++ b/docs/sphinx/qapidoc.py @@ -27,6 +27,7 @@ import os import re import textwrap +from typing import List from docutils import nodes from docutils.parsers.rst import Directive, directives @@ -36,6 +37,7 @@ from qapi.schema import QAPISchema import sphinx +from sphinx.directives.code import CodeBlock from sphinx.errors import ExtensionError from sphinx.util.nodes import nested_parse_with_titles @@ -567,10 +569,63 @@ def run(self): raise ExtensionError(str(err)) from err +class QMPExample(CodeBlock, NestedDirective): + """ + Custom admonition for QMP code examples. + + When the :annotated: option is present, the body of this directive + is parsed as normal rST instead. Code blocks must be explicitly + written by the user, but this allows for intermingling explanatory + paragraphs with arbitrary rST syntax and code blocks for more + involved examples. + + When :annotated: is absent, the directive body is treated as a + simple standalone QMP code block literal. + """ + + required_argument = 0 + optional_arguments = 0 + has_content = True + option_spec = { + "annotated": directives.flag, + "title": directives.unchanged, + } + + def admonition_wrap(self, *content) -> List[nodes.Node]: + title = "Example:" + if "title" in self.options: + title = f"{title} {self.options['title']}" + + admon = nodes.admonition( + "", + nodes.title("", title), + *content, + classes=["admonition", "admonition-example"], + ) + return [admon] + + def run_annotated(self) -> List[nodes.Node]: + content_node: nodes.Element = nodes.section() + self.do_parse(self.content, content_node) + return content_node.children + + def run(self) -> List[nodes.Node]: + annotated = "annotated" in self.options + + if annotated: + content_nodes = self.run_annotated() + else: + self.arguments = ["QMP"] + content_nodes = super().run() + + return self.admonition_wrap(*content_nodes) + + def setup(app): """Register qapi-doc directive with Sphinx""" app.add_config_value("qapidoc_srctree", None, "env") app.add_directive("qapi-doc", QAPIDocDirective) + app.add_directive("qmp-example", QMPExample) return { "version": __version__,
This is a directive that creates a syntactic sugar for creating "Example" boxes very similar to the ones already used in the bitmaps.rst document, please see e.g. https://www.qemu.org/docs/master/interop/bitmaps.html#creation-block-dirty-bitmap-add In its simplest form, when a custom title is not needed or wanted, and the example body is *solely* a QMP example: ``` .. qmp-example:: {body} ``` is syntactic sugar for: ``` .. admonition:: Example: .. code-block:: QMP {body} ``` When a custom, plaintext title that describes the example is desired, this form: ``` .. qmp-example:: :title: Defrobnification {body} ``` Is syntactic sugar for: ``` .. admonition:: Example: Defrobnification .. code-block:: QMP {body} ``` Lastly, when Examples are multi-step processes that require non-QMP exposition, have lengthy titles, or otherwise involve prose with rST markup (lists, cross-references, etc), the most complex form: ``` .. qmp-example:: :annotated: This example shows how to use `foo-command`:: {body} For more information, please see `frobnozz`. ``` Is desugared to: ``` .. admonition:: Example: This example shows how to use `foo-command`:: {body} For more information, please see `frobnozz`. ``` Note that :annotated: and :title: options can be combined together, if desired. The primary benefit here being documentation source consistently using the same directive for all forms of examples to ensure consistent visual styling, and ensuring all relevant prose is visually grouped alongside the code literal block. Note that as of this commit, the code-block rST syntax "::" does not apply QMP highlighting; you would need to use ".. code-block:: QMP". The very next commit changes this behavior to assume all "::" code blocks within this directive are QMP blocks. Signed-off-by: John Snow <jsnow@redhat.com> --- docs/sphinx/qapidoc.py | 55 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+)