[PATCH v2 13/21] qapi/parser: don't parse rST markup as section headers

[John Snow]

The double-colon synax is rST formatting that precedes a literal code
block. We do not want to capture these as QAPI-specific sections.

Coerce blocks that start with e.g. "Example::" to be parsed as untagged
paragraphs instead of special tagged sections.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 scripts/qapi/parser.py          | 9 +++++++--
 tests/qapi-schema/doc-good.json | 3 +++
 tests/qapi-schema/doc-good.out  | 3 +++
 tests/qapi-schema/doc-good.txt  | 3 +++
 4 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py
index 0a13f0f541a..6ad5663e545 100644
--- a/scripts/qapi/parser.py
+++ b/scripts/qapi/parser.py
@@ -544,10 +544,15 @@ def get_doc(self) -> 'QAPIDoc':
                         line = self.get_doc_indented(doc)
                     no_more_args = True
                 elif match := re.match(
-                        r'(Returns|Errors|Since|Notes?|Examples?|TODO): *',
-                        line):
+                        r'(Returns|Errors|Since|Notes?|Examples?|TODO)'
+                        r'(?!::): *',
+                        line,
+                ):
                     # tagged section
 
+                    # Note: "sections" with two colons are left alone as
+                    # rST markup and not interpreted as a section heading.
+
                     # TODO: Remove this error sometime in 2025 or so
                     # after we've fully transitioned to the new qapidoc
                     # generator.
diff --git a/tests/qapi-schema/doc-good.json b/tests/qapi-schema/doc-good.json
index 32ff910b4f8..107123f8a8d 100644
--- a/tests/qapi-schema/doc-good.json
+++ b/tests/qapi-schema/doc-good.json
@@ -181,6 +181,9 @@
 #  - *verbatim*
 #  - {braces}
 #
+# Note::
+#    Ceci n'est pas une note
+#
 # Since: 2.10
 ##
 { 'command': 'cmd',
diff --git a/tests/qapi-schema/doc-good.out b/tests/qapi-schema/doc-good.out
index 631dc9f8dad..bd876b6542d 100644
--- a/tests/qapi-schema/doc-good.out
+++ b/tests/qapi-schema/doc-good.out
@@ -190,6 +190,9 @@ frobnicate
     section=Examples
  - *verbatim*
  - {braces}
+    section=None
+Note::
+   Ceci n'est pas une note
     section=Since
 2.10
 doc symbol=cmd-boxed
diff --git a/tests/qapi-schema/doc-good.txt b/tests/qapi-schema/doc-good.txt
index d8bfa742c2f..30d457e5488 100644
--- a/tests/qapi-schema/doc-good.txt
+++ b/tests/qapi-schema/doc-good.txt
@@ -231,6 +231,9 @@ Examples
    - *verbatim*
    - {braces}
 
+Note::
+   Ceci n'est pas une note
+
 
 Since
 ~~~~~
-- 
2.45.0