On 04.11.25 13:07, Markus Armbruster wrote:
Vladimir Sementsov-Ogievskiy <[email protected]> writes:
Add explicit validation for QAPI documentation formatting rules:
1. Lines must not exceed 70 columns in width (including '# ' prefix)
2. Sentences must be separated by two spaces
Example sections and literal :: blocks (seldom case) are excluded, we
don't require them to be <= 70, that would be too restrictive. Anyway,
they share common 80-columns recommendations (not requirements).
Add two simple tests, illustrating the change.
Signed-off-by: Vladimir Sementsov-Ogievskiy <[email protected]>
---
Hi all!
v5: - break "literal" block at any decreasing the indent,
not only at no-indent
- add two simple tests
This is based on
[PATCH 0/8] A QAPI schema doc markup fix, and style cleanup
Based-on: <[email protected]>
scripts/qapi/parser.py | 52 +++++++++++++++++++++-
tests/qapi-schema/doc-bad-long-line.err | 1 +
tests/qapi-schema/doc-bad-long-line.json | 6 +++
tests/qapi-schema/doc-bad-long-line.out | 0
tests/qapi-schema/doc-bad-whitespaces.err | 2 +
tests/qapi-schema/doc-bad-whitespaces.json | 6 +++
tests/qapi-schema/doc-bad-whitespaces.out | 0
tests/qapi-schema/meson.build | 2 +
8 files changed, 68 insertions(+), 1 deletion(-)
create mode 100644 tests/qapi-schema/doc-bad-long-line.err
create mode 100644 tests/qapi-schema/doc-bad-long-line.json
create mode 100644 tests/qapi-schema/doc-bad-long-line.out
create mode 100644 tests/qapi-schema/doc-bad-whitespaces.err
create mode 100644 tests/qapi-schema/doc-bad-whitespaces.json
create mode 100644 tests/qapi-schema/doc-bad-whitespaces.out
diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py
index 9fbf80a541..ffb149850d 100644
--- a/scripts/qapi/parser.py
+++ b/scripts/qapi/parser.py
@@ -108,6 +108,11 @@ def __init__(self,
self.exprs: List[QAPIExpression] = []
self.docs: List[QAPIDoc] = []
+ # State for tracking qmp-example blocks and simple
+ # :: literal blocks.
+ self._literal_mode = False
+ self._literal_mode_indent = 0
+
# Showtime!
self._parse()
@@ -423,12 +428,57 @@ def get_doc_line(self) -> Optional[str]:
if self.val != '##':
raise QAPIParseError(
self, "junk after '##' at end of documentation comment")
+ self._literal_mode = False
return None
if self.val == '#':
return ''
if self.val[1] != ' ':
raise QAPIParseError(self, "missing space after #")
- return self.val[2:].rstrip()
+
+ line = self.val[2:].rstrip()
+
+ if re.match(r'(\.\. +qmp-example)? *::$', line):
After a closer reading of ReST docs and some testing: this isn't quite
right, although it works okay for what we have.
A directive's '::' need not be at the end of a line. The regexp fails
to match a qmp-example directive with text after '::'. No such
directives exist right now.
A literal block starts after a '::' at the end of a paragraph,
i.e. after '::' and a blank line. The regexp only matches '::' on its
own line, not at the end of a line of text. It matches it even when
it's not followed by a blank line.
In review of v4, I claimed we don't use the contracted form "text::".
Not true. For instance, in block-core.json:
# @bins: list of io request counts corresponding to histogram
# intervals, one more element than @boundaries has. For the
# example above, @bins may be something like [3, 1, 5, 2], and
# corresponding histogram looks like::
#
# 5| *
# 4| *
# 3| * *
# 2| * * *
# 1| * * * *
# +------------------
# 10 50 100
#
Ow, my old histograms)
# Since: 4.0
##
The literal block starts after "like::" and ends before "Since:'.
+ self._literal_mode = True
+ self._literal_mode_indent = 0
+ elif self._literal_mode and line:
+ indent = re.match(r'^ *', line).end()
+ if self._literal_mode_indent == 0:
+ self._literal_mode_indent = indent
+ elif indent < self._literal_mode_indent:
+ # ReST directives stop at decreasing indentation
+ self._literal_mode = False
This isn't quite right, either. We need to stop when indentation of
non-blank lines drops below the indentation of the line containing the
'::'.
Perhaps it's easier for both of us if I fix this on top. Thoughts?
No objections, good for me!
+
+ if not self._literal_mode:
+ self._validate_doc_line_format(line)
+
+ return line
+
+ def _validate_doc_line_format(self, line: str) -> None:
+ """
+ Validate documentation format rules for a single line:
+ 1. Lines should not exceed 70 columns
+ 2. Sentences should be separated by two spaces
+ """
+ full_line_length = len(line) + 2 # "# " = 2 characters
+ if full_line_length > 70:
+ # Skip URL lines - they can't be broken
+ if re.match(r' *(https?|ftp)://[^ ]*$', line):
+ pass
+ else:
+ raise QAPIParseError(
+ self, "documentation line exceeds 70 columns"
+ )
+
+ single_space_pattern = r'(\be\.g\.|^ *\d\.|([.!?])) [A-Z0-9(]'
+ for m in list(re.finditer(single_space_pattern, line)):
+ if not m.group(2):
+ continue
+ # HACK so the error message points to the offending spot
+ self.pos = self.line_pos + 2 + m.start(2) + 1
+ raise QAPIParseError(
+ self, "Use two spaces between sentences\n"
+ "If this not the end of a sentence, please report the bug",
+ )
@staticmethod
def _match_at_name_colon(string: str) -> Optional[Match[str]]:
diff --git a/tests/qapi-schema/doc-bad-long-line.err
b/tests/qapi-schema/doc-bad-long-line.err
new file mode 100644
index 0000000000..611a3b1fef
--- /dev/null
+++ b/tests/qapi-schema/doc-bad-long-line.err
@@ -0,0 +1 @@
+doc-bad-long-line.json:4:1: documentation line exceeds 70 columns
diff --git a/tests/qapi-schema/doc-bad-long-line.json
b/tests/qapi-schema/doc-bad-long-line.json
new file mode 100644
index 0000000000..d7f887694d
--- /dev/null
+++ b/tests/qapi-schema/doc-bad-long-line.json
@@ -0,0 +1,6 @@
+##
+# @foo:
+#
+# This line has exactly 71 characters, including spaces and punctuation!
Really?
Oh, it's 72 characters actually! AI tricked me. Didn't I check it out?
Maybe:
# This line has exactly 71 chars, including the leading hash and space.
+##
+{ 'command': 'foo' }
diff --git a/tests/qapi-schema/doc-bad-long-line.out
b/tests/qapi-schema/doc-bad-long-line.out
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/tests/qapi-schema/doc-bad-whitespaces.err
b/tests/qapi-schema/doc-bad-whitespaces.err
new file mode 100644
index 0000000000..5cca1954c0
--- /dev/null
+++ b/tests/qapi-schema/doc-bad-whitespaces.err
@@ -0,0 +1,2 @@
+doc-bad-whitespaces.json:4:48: Use two spaces between sentences
+If this not the end of a sentence, please report the bug
diff --git a/tests/qapi-schema/doc-bad-whitespaces.json
b/tests/qapi-schema/doc-bad-whitespaces.json
new file mode 100644
index 0000000000..b0c318c670
--- /dev/null
+++ b/tests/qapi-schema/doc-bad-whitespaces.json
@@ -0,0 +1,6 @@
+##
+# @foo:
+#
+# Sentences should be split by two whitespaces. But here is only one.
two spaces
+##
+{ 'command': 'foo' }
diff --git a/tests/qapi-schema/doc-bad-whitespaces.out
b/tests/qapi-schema/doc-bad-whitespaces.out
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/tests/qapi-schema/meson.build b/tests/qapi-schema/meson.build
index c47025d16d..b24b27db21 100644
--- a/tests/qapi-schema/meson.build
+++ b/tests/qapi-schema/meson.build
@@ -61,8 +61,10 @@ schemas = [
'doc-bad-event-arg.json',
'doc-bad-feature.json',
'doc-bad-indent.json',
+ 'doc-bad-long-line.json',
'doc-bad-symbol.json',
'doc-bad-union-member.json',
+ 'doc-bad-whitespaces.json',
'doc-before-include.json',
'doc-before-pragma.json',
'doc-duplicate-features.json',
--
Best regards,
Vladimir
