qapi: Rewrite parsing of doc comment section symbols and tags
To recognize a line starting with a section symbol and or tag, we first split it at the first space, then examine the part left of the space. We can just as well examine the unsplit line, so do that. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20230428105429.1687850-13-armbru@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> [Work around lack of walrus operator in Python 3.7 and older]
This commit is contained in:
Markus Armbruster
parent
9b2c6746d3
commit
3e32dca3f0
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@ -560,12 +560,12 @@ class QAPIDoc:
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self._switch_section(QAPIDoc.NullSection(self._parser))
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@staticmethod
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def _is_section_tag(name: str) -> bool:
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return name in ('Returns:', 'Since:',
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# those are often singular or plural
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'Note:', 'Notes:',
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'Example:', 'Examples:',
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'TODO:')
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def _match_at_name_colon(string: str) -> re.Match:
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return re.match(r'@([^:]*): *', string)
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@staticmethod
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def _match_section_tag(string: str) -> re.Match:
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return re.match(r'(Returns|Since|Notes?|Examples?|TODO): *', string)
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def _append_body_line(self, line: str) -> None:
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"""
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@ -581,7 +581,6 @@ class QAPIDoc:
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Else, append the line to the current section.
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"""
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name = line.split(' ', 1)[0]
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# FIXME not nice: things like '# @foo:' and '# @foo: ' aren't
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# recognized, and get silently treated as ordinary text
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if not self.symbol and not self.body.text and line.startswith('@'):
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@ -595,12 +594,12 @@ class QAPIDoc:
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self._parser, "name required after '@'")
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elif self.symbol:
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# This is a definition documentation block
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if name.startswith('@') and name.endswith(':'):
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if self._match_at_name_colon(line):
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self._append_line = self._append_args_line
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self._append_args_line(line)
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elif line == 'Features:':
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self._append_line = self._append_features_line
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elif self._is_section_tag(name):
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elif self._match_section_tag(line):
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self._append_line = self._append_various_line
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self._append_various_line(line)
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else:
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@ -621,16 +620,16 @@ class QAPIDoc:
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Else, append the line to the current section.
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"""
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name = line.split(' ', 1)[0]
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if name.startswith('@') and name.endswith(':'):
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match = self._match_at_name_colon(line)
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if match:
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# If line is "@arg: first line of description", find
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# the index of 'f', which is the indent we expect for any
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# following lines. We then remove the leading "@arg:"
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# from line and replace it with spaces so that 'f' has the
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# same index as it did in the original line and can be
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# handled the same way we will handle following lines.
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indent = must_match(r'@\S*:\s*', line).end()
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name = match.group(1)
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indent = match.end()
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line = line[indent:]
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if not line:
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# Line was just the "@arg:" header
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@ -638,8 +637,8 @@ class QAPIDoc:
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indent = -1
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else:
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line = ' ' * indent + line
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self._start_args_section(name[1:-1], indent)
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elif self._is_section_tag(name):
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self._start_args_section(name, indent)
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elif self._match_section_tag(line):
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self._append_line = self._append_various_line
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self._append_various_line(line)
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return
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@ -656,16 +655,16 @@ class QAPIDoc:
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self._append_freeform(line)
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def _append_features_line(self, line: str) -> None:
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name = line.split(' ', 1)[0]
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if name.startswith('@') and name.endswith(':'):
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match = self._match_at_name_colon(line)
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if match:
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# If line is "@arg: first line of description", find
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# the index of 'f', which is the indent we expect for any
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# following lines. We then remove the leading "@arg:"
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# from line and replace it with spaces so that 'f' has the
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# same index as it did in the original line and can be
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# handled the same way we will handle following lines.
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indent = must_match(r'@\S*:\s*', line).end()
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name = match.group(1)
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indent = match.end()
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line = line[indent:]
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if not line:
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# Line was just the "@arg:" header
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@ -673,8 +672,8 @@ class QAPIDoc:
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indent = -1
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else:
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line = ' ' * indent + line
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self._start_features_section(name[1:-1], indent)
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elif self._is_section_tag(name):
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self._start_features_section(name, indent)
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elif self._match_section_tag(line):
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self._append_line = self._append_various_line
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self._append_various_line(line)
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return
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@ -698,13 +697,13 @@ class QAPIDoc:
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Else, append the line to the current section.
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"""
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name = line.split(' ', 1)[0]
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if name.startswith('@') and name.endswith(':'):
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match = self._match_at_name_colon(line)
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if match:
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raise QAPIParseError(self._parser,
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"'%s' can't follow '%s' section"
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% (name, self.sections[0].name))
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if self._is_section_tag(name):
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"'@%s:' can't follow '%s' section"
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% (match.group(1), self.sections[0].name))
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match = self._match_section_tag(line)
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if match:
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# If line is "Section: first line of description", find
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# the index of 'f', which is the indent we expect for any
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# following lines. We then remove the leading "Section:"
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@ -719,7 +718,7 @@ class QAPIDoc:
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indent = 0
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else:
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line = ' ' * indent + line
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self._start_section(name[:-1], indent)
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self._start_section(match.group(1), indent)
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self._append_freeform(line)
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