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Subject[PATCH v2 1/5] docs: automarkup.py: Use new C roles in Sphinx 3
While Sphinx 2 used a single c:type role for struct, union, enum and
typedef, Sphinx 3 uses a specific role for each one.
To keep backward compatibility, detect the Sphinx version and use the
correct roles for that version.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@protonmail.com>
---
Documentation/sphinx/automarkup.py | 55 ++++++++++++++++++++++++++----
1 file changed, 49 insertions(+), 6 deletions(-)

diff --git a/Documentation/sphinx/automarkup.py b/Documentation/sphinx/automarkup.py
index a1b0f554cd82..db13fb15cedc 100644
--- a/Documentation/sphinx/automarkup.py
+++ b/Documentation/sphinx/automarkup.py
@@ -23,7 +23,21 @@ from itertools import chain
# bit tries to restrict matches to things that won't create trouble.
#
RE_function = re.compile(r'(([\w_][\w\d_]+)\(\))')
-RE_type = re.compile(r'(struct|union|enum|typedef)\s+([\w_][\w\d_]+)')
+
+#
+# Sphinx 2 uses the same :c:type role for struct, union, enum and typedef
+#
+RE_generic_type = re.compile(r'(struct|union|enum|typedef)\s+([\w_][\w\d_]+)')
+
+#
+# Sphinx 3 uses a different C role for each one of struct, union, enum and
+# typedef
+#
+RE_struct = re.compile(r'\b(struct)\s+([a-zA-Z_]\w+)', flags=re.ASCII)
+RE_union = re.compile(r'\b(union)\s+([a-zA-Z_]\w+)', flags=re.ASCII)
+RE_enum = re.compile(r'\b(enum)\s+([a-zA-Z_]\w+)', flags=re.ASCII)
+RE_typedef = re.compile(r'\b(typedef)\s+([a-zA-Z_]\w+)', flags=re.ASCII)
+
#
# Detects a reference to a documentation page of the form Documentation/... with
# an optional extension
@@ -48,9 +62,22 @@ def markup_refs(docname, app, node):
#
# Associate each regex with the function that will markup its matches
#
- markup_func = {RE_type: markup_c_ref,
- RE_function: markup_c_ref,
- RE_doc: markup_doc_ref}
+ markup_func_sphinx2 = {RE_doc: markup_doc_ref,
+ RE_function: markup_c_ref,
+ RE_generic_type: markup_c_ref}
+
+ markup_func_sphinx3 = {RE_doc: markup_doc_ref,
+ RE_function: markup_c_ref,
+ RE_struct: markup_c_ref,
+ RE_union: markup_c_ref,
+ RE_enum: markup_c_ref,
+ RE_typedef: markup_c_ref}
+
+ if sphinx.version_info[0] >= 3:
+ markup_func = markup_func_sphinx3
+ else:
+ markup_func = markup_func_sphinx2
+
match_iterators = [regex.finditer(t) for regex in markup_func]
#
# Sort all references by the starting position in text
@@ -79,8 +106,24 @@ def markup_refs(docname, app, node):
# type_name) with an appropriate cross reference.
#
def markup_c_ref(docname, app, match):
- class_str = {RE_function: 'c-func', RE_type: 'c-type'}
- reftype_str = {RE_function: 'function', RE_type: 'type'}
+ class_str = {RE_function: 'c-func',
+ # Sphinx 2 only
+ RE_generic_type: 'c-type',
+ # Sphinx 3+ only
+ RE_struct: 'c-struct',
+ RE_union: 'c-union',
+ RE_enum: 'c-enum',
+ RE_typedef: 'c-type',
+ }
+ reftype_str = {RE_function: 'function',
+ # Sphinx 2 only
+ RE_generic_type: 'type',
+ # Sphinx 3+ only
+ RE_struct: 'struct',
+ RE_union: 'union',
+ RE_enum: 'enum',
+ RE_typedef: 'type',
+ }

cdom = app.env.domains['c']
#
--
2.28.0

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