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docs: cdomain.py: extend it to handle new Sphinx 3.x tags

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While most of the C domain parsing is done via kernel-doc,
some RST files use C domain tags directly.

While several of them can be removed for Sphinx < 3.0, due
to automarkup.py, and several others that could be
converted into kernel-doc markups, changes like that are
time-consuming, and may not fit all cases.

As we already have the cdomain.py for handing backward
compatibility with Sphinx versions below 3.0, let's
make it more complete, in order to cover any usage of the
newer tags outside kernel-doc.

This way, it should be feasible to use the new tags inside
the Kernel tree, without losing backward compatibility.

This should allow fixing the remaining warnings with
the Kernel tags.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-09-25 13:38:27 +02:00
parent 71e552aebf
commit 95f4949051
1 changed files with 39 additions and 1 deletions
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40
Documentation/sphinx/cdomain.py
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@ -54,7 +54,7 @@ namespace = None
#
# Handle trivial newer c domain tags that are part of Sphinx 3.1 c domain tags
# - Store the namespace if ".. c:namespace::" tag is found
#
RE_namespace = re.compile(r'^\s*..\s*c:namespace::\s*(\S+)\s*$')
def markup_namespace(match):
@ -64,10 +64,48 @@ def markup_namespace(match):
return ""
#
# Handle c:macro for function-style declaration
#
RE_macro = re.compile(r'^\s*..\s*c:macro::\s*(\S+)\s+(\S.*)\s*$')
def markup_macro(match):
return ".. c:function:: " + match.group(1) + ' ' + match.group(2)
#
# Handle newer c domain tags that are evaluated as .. c:type: for
# backward-compatibility with Sphinx < 3.0
#
RE_ctype = re.compile(r'^\s*..\s*c:(struct|union|enum|enumerator|alias)::\s*(.*)$')
def markup_ctype(match):
return ".. c:type:: " + match.group(2)
#
# Handle newer c domain tags that are evaluated as :c:type: for
# backward-compatibility with Sphinx < 3.0
#
RE_ctype_refs = re.compile(r':c:(var|struct|union|enum|enumerator)::`([^\`]+)`')
def markup_ctype_refs(match):
return ":c:type:`" + match.group(2) + '`'
#
# Simply convert :c:expr: and :c:texpr: into a literal block.
#
RE_expr = re.compile(r':c:(expr|texpr):`([^\`]+)`')
def markup_c_expr(match):
return '\ ``' + match.group(2) + '``\ '
#
# Parse Sphinx 3.x C markups, replacing them by backward-compatible ones
#
def c_markups(app, docname, source):
result = ""
markup_func = {
RE_namespace: markup_namespace,
RE_expr: markup_c_expr,
RE_macro: markup_macro,
RE_ctype: markup_ctype,
RE_ctype_refs: markup_ctype_refs,
}
lines = iter(source[0].splitlines(True))