18e3673e0f
Eh. Not worth the fuss today. There are bigger fish to fry. Signed-off-by: John Snow <jsnow@redhat.com> Message-Id: <20210930205716.1148693-13-jsnow@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
811 lines
30 KiB
Python
811 lines
30 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# QAPI schema parser
|
|
#
|
|
# Copyright IBM, Corp. 2011
|
|
# Copyright (c) 2013-2019 Red Hat Inc.
|
|
#
|
|
# Authors:
|
|
# Anthony Liguori <aliguori@us.ibm.com>
|
|
# Markus Armbruster <armbru@redhat.com>
|
|
# Marc-André Lureau <marcandre.lureau@redhat.com>
|
|
# Kevin Wolf <kwolf@redhat.com>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL, version 2.
|
|
# See the COPYING file in the top-level directory.
|
|
|
|
from collections import OrderedDict
|
|
import os
|
|
import re
|
|
from typing import (
|
|
TYPE_CHECKING,
|
|
Dict,
|
|
List,
|
|
Optional,
|
|
Set,
|
|
Union,
|
|
)
|
|
|
|
from .common import must_match
|
|
from .error import QAPISemError, QAPISourceError
|
|
from .source import QAPISourceInfo
|
|
|
|
|
|
if TYPE_CHECKING:
|
|
# pylint: disable=cyclic-import
|
|
# TODO: Remove cycle. [schema -> expr -> parser -> schema]
|
|
from .schema import QAPISchemaFeature, QAPISchemaMember
|
|
|
|
|
|
#: Represents a single Top Level QAPI schema expression.
|
|
TopLevelExpr = Dict[str, object]
|
|
|
|
# Return value alias for get_expr().
|
|
_ExprValue = Union[List[object], Dict[str, object], str, bool]
|
|
|
|
# FIXME: Consolidate and centralize definitions for TopLevelExpr,
|
|
# _ExprValue, _JSONValue, and _JSONObject; currently scattered across
|
|
# several modules.
|
|
|
|
|
|
class QAPIParseError(QAPISourceError):
|
|
"""Error class for all QAPI schema parsing errors."""
|
|
def __init__(self, parser: 'QAPISchemaParser', msg: str):
|
|
col = 1
|
|
for ch in parser.src[parser.line_pos:parser.pos]:
|
|
if ch == '\t':
|
|
col = (col + 7) % 8 + 1
|
|
else:
|
|
col += 1
|
|
super().__init__(parser.info, msg, col)
|
|
|
|
|
|
class QAPISchemaParser:
|
|
"""
|
|
Parse QAPI schema source.
|
|
|
|
Parse a JSON-esque schema file and process directives. See
|
|
qapi-code-gen.txt section "Schema Syntax" for the exact syntax.
|
|
Grammatical validation is handled later by `expr.check_exprs()`.
|
|
|
|
:param fname: Source file name.
|
|
:param previously_included:
|
|
The absolute names of previously included source files,
|
|
if being invoked from another parser.
|
|
:param incl_info:
|
|
`QAPISourceInfo` belonging to the parent module.
|
|
``None`` implies this is the root module.
|
|
|
|
:ivar exprs: Resulting parsed expressions.
|
|
:ivar docs: Resulting parsed documentation blocks.
|
|
|
|
:raise OSError: For problems reading the root schema document.
|
|
:raise QAPIError: For errors in the schema source.
|
|
"""
|
|
def __init__(self,
|
|
fname: str,
|
|
previously_included: Optional[Set[str]] = None,
|
|
incl_info: Optional[QAPISourceInfo] = None):
|
|
self._fname = fname
|
|
self._included = previously_included or set()
|
|
self._included.add(os.path.abspath(self._fname))
|
|
self.src = ''
|
|
|
|
# Lexer state (see `accept` for details):
|
|
self.info = QAPISourceInfo(self._fname, incl_info)
|
|
self.tok: Union[None, str] = None
|
|
self.pos = 0
|
|
self.cursor = 0
|
|
self.val: Optional[Union[bool, str]] = None
|
|
self.line_pos = 0
|
|
|
|
# Parser output:
|
|
self.exprs: List[Dict[str, object]] = []
|
|
self.docs: List[QAPIDoc] = []
|
|
|
|
# Showtime!
|
|
self._parse()
|
|
|
|
def _parse(self) -> None:
|
|
"""
|
|
Parse the QAPI schema document.
|
|
|
|
:return: None. Results are stored in ``.exprs`` and ``.docs``.
|
|
"""
|
|
cur_doc = None
|
|
|
|
# May raise OSError; allow the caller to handle it.
|
|
with open(self._fname, 'r', encoding='utf-8') as fp:
|
|
self.src = fp.read()
|
|
if self.src == '' or self.src[-1] != '\n':
|
|
self.src += '\n'
|
|
|
|
# Prime the lexer:
|
|
self.accept()
|
|
|
|
# Parse until done:
|
|
while self.tok is not None:
|
|
info = self.info
|
|
if self.tok == '#':
|
|
self.reject_expr_doc(cur_doc)
|
|
for cur_doc in self.get_doc(info):
|
|
self.docs.append(cur_doc)
|
|
continue
|
|
|
|
expr = self.get_expr()
|
|
if not isinstance(expr, dict):
|
|
raise QAPISemError(
|
|
info, "top-level expression must be an object")
|
|
|
|
if 'include' in expr:
|
|
self.reject_expr_doc(cur_doc)
|
|
if len(expr) != 1:
|
|
raise QAPISemError(info, "invalid 'include' directive")
|
|
include = expr['include']
|
|
if not isinstance(include, str):
|
|
raise QAPISemError(info,
|
|
"value of 'include' must be a string")
|
|
incl_fname = os.path.join(os.path.dirname(self._fname),
|
|
include)
|
|
self.exprs.append({'expr': {'include': incl_fname},
|
|
'info': info})
|
|
exprs_include = self._include(include, info, incl_fname,
|
|
self._included)
|
|
if exprs_include:
|
|
self.exprs.extend(exprs_include.exprs)
|
|
self.docs.extend(exprs_include.docs)
|
|
elif "pragma" in expr:
|
|
self.reject_expr_doc(cur_doc)
|
|
if len(expr) != 1:
|
|
raise QAPISemError(info, "invalid 'pragma' directive")
|
|
pragma = expr['pragma']
|
|
if not isinstance(pragma, dict):
|
|
raise QAPISemError(
|
|
info, "value of 'pragma' must be an object")
|
|
for name, value in pragma.items():
|
|
self._pragma(name, value, info)
|
|
else:
|
|
expr_elem = {'expr': expr,
|
|
'info': info}
|
|
if cur_doc:
|
|
if not cur_doc.symbol:
|
|
raise QAPISemError(
|
|
cur_doc.info, "definition documentation required")
|
|
expr_elem['doc'] = cur_doc
|
|
self.exprs.append(expr_elem)
|
|
cur_doc = None
|
|
self.reject_expr_doc(cur_doc)
|
|
|
|
@staticmethod
|
|
def reject_expr_doc(doc: Optional['QAPIDoc']) -> None:
|
|
if doc and doc.symbol:
|
|
raise QAPISemError(
|
|
doc.info,
|
|
"documentation for '%s' is not followed by the definition"
|
|
% doc.symbol)
|
|
|
|
@staticmethod
|
|
def _include(include: str,
|
|
info: QAPISourceInfo,
|
|
incl_fname: str,
|
|
previously_included: Set[str]
|
|
) -> Optional['QAPISchemaParser']:
|
|
incl_abs_fname = os.path.abspath(incl_fname)
|
|
# catch inclusion cycle
|
|
inf: Optional[QAPISourceInfo] = info
|
|
while inf:
|
|
if incl_abs_fname == os.path.abspath(inf.fname):
|
|
raise QAPISemError(info, "inclusion loop for %s" % include)
|
|
inf = inf.parent
|
|
|
|
# skip multiple include of the same file
|
|
if incl_abs_fname in previously_included:
|
|
return None
|
|
|
|
try:
|
|
return QAPISchemaParser(incl_fname, previously_included, info)
|
|
except OSError as err:
|
|
raise QAPISemError(
|
|
info,
|
|
f"can't read include file '{incl_fname}': {err.strerror}"
|
|
) from err
|
|
|
|
@staticmethod
|
|
def _pragma(name: str, value: object, info: QAPISourceInfo) -> None:
|
|
|
|
def check_list_str(name: str, value: object) -> List[str]:
|
|
if (not isinstance(value, list) or
|
|
any(not isinstance(elt, str) for elt in value)):
|
|
raise QAPISemError(
|
|
info,
|
|
"pragma %s must be a list of strings" % name)
|
|
return value
|
|
|
|
pragma = info.pragma
|
|
|
|
if name == 'doc-required':
|
|
if not isinstance(value, bool):
|
|
raise QAPISemError(info,
|
|
"pragma 'doc-required' must be boolean")
|
|
pragma.doc_required = value
|
|
elif name == 'command-name-exceptions':
|
|
pragma.command_name_exceptions = check_list_str(name, value)
|
|
elif name == 'command-returns-exceptions':
|
|
pragma.command_returns_exceptions = check_list_str(name, value)
|
|
elif name == 'member-name-exceptions':
|
|
pragma.member_name_exceptions = check_list_str(name, value)
|
|
else:
|
|
raise QAPISemError(info, "unknown pragma '%s'" % name)
|
|
|
|
def accept(self, skip_comment: bool = True) -> None:
|
|
"""
|
|
Read and store the next token.
|
|
|
|
:param skip_comment:
|
|
When false, return COMMENT tokens ("#").
|
|
This is used when reading documentation blocks.
|
|
|
|
:return:
|
|
None. Several instance attributes are updated instead:
|
|
|
|
- ``.tok`` represents the token type. See below for values.
|
|
- ``.info`` describes the token's source location.
|
|
- ``.val`` is the token's value, if any. See below.
|
|
- ``.pos`` is the buffer index of the first character of
|
|
the token.
|
|
|
|
* Single-character tokens:
|
|
|
|
These are "{", "}", ":", ",", "[", and "]".
|
|
``.tok`` holds the single character and ``.val`` is None.
|
|
|
|
* Multi-character tokens:
|
|
|
|
* COMMENT:
|
|
|
|
This token is not normally returned by the lexer, but it can
|
|
be when ``skip_comment`` is False. ``.tok`` is "#", and
|
|
``.val`` is a string including all chars until end-of-line,
|
|
including the "#" itself.
|
|
|
|
* STRING:
|
|
|
|
``.tok`` is "'", the single quote. ``.val`` contains the
|
|
string, excluding the surrounding quotes.
|
|
|
|
* TRUE and FALSE:
|
|
|
|
``.tok`` is either "t" or "f", ``.val`` will be the
|
|
corresponding bool value.
|
|
|
|
* EOF:
|
|
|
|
``.tok`` and ``.val`` will both be None at EOF.
|
|
"""
|
|
while True:
|
|
self.tok = self.src[self.cursor]
|
|
self.pos = self.cursor
|
|
self.cursor += 1
|
|
self.val = None
|
|
|
|
if self.tok == '#':
|
|
if self.src[self.cursor] == '#':
|
|
# Start of doc comment
|
|
skip_comment = False
|
|
self.cursor = self.src.find('\n', self.cursor)
|
|
if not skip_comment:
|
|
self.val = self.src[self.pos:self.cursor]
|
|
return
|
|
elif self.tok in '{}:,[]':
|
|
return
|
|
elif self.tok == "'":
|
|
# Note: we accept only printable ASCII
|
|
string = ''
|
|
esc = False
|
|
while True:
|
|
ch = self.src[self.cursor]
|
|
self.cursor += 1
|
|
if ch == '\n':
|
|
raise QAPIParseError(self, "missing terminating \"'\"")
|
|
if esc:
|
|
# Note: we recognize only \\ because we have
|
|
# no use for funny characters in strings
|
|
if ch != '\\':
|
|
raise QAPIParseError(self,
|
|
"unknown escape \\%s" % ch)
|
|
esc = False
|
|
elif ch == '\\':
|
|
esc = True
|
|
continue
|
|
elif ch == "'":
|
|
self.val = string
|
|
return
|
|
if ord(ch) < 32 or ord(ch) >= 127:
|
|
raise QAPIParseError(
|
|
self, "funny character in string")
|
|
string += ch
|
|
elif self.src.startswith('true', self.pos):
|
|
self.val = True
|
|
self.cursor += 3
|
|
return
|
|
elif self.src.startswith('false', self.pos):
|
|
self.val = False
|
|
self.cursor += 4
|
|
return
|
|
elif self.tok == '\n':
|
|
if self.cursor == len(self.src):
|
|
self.tok = None
|
|
return
|
|
self.info = self.info.next_line()
|
|
self.line_pos = self.cursor
|
|
elif not self.tok.isspace():
|
|
# Show up to next structural, whitespace or quote
|
|
# character
|
|
match = must_match('[^[\\]{}:,\\s\'"]+',
|
|
self.src[self.cursor-1:])
|
|
raise QAPIParseError(self, "stray '%s'" % match.group(0))
|
|
|
|
def get_members(self) -> Dict[str, object]:
|
|
expr: Dict[str, object] = OrderedDict()
|
|
if self.tok == '}':
|
|
self.accept()
|
|
return expr
|
|
if self.tok != "'":
|
|
raise QAPIParseError(self, "expected string or '}'")
|
|
while True:
|
|
key = self.val
|
|
assert isinstance(key, str) # Guaranteed by tok == "'"
|
|
|
|
self.accept()
|
|
if self.tok != ':':
|
|
raise QAPIParseError(self, "expected ':'")
|
|
self.accept()
|
|
if key in expr:
|
|
raise QAPIParseError(self, "duplicate key '%s'" % key)
|
|
expr[key] = self.get_expr()
|
|
if self.tok == '}':
|
|
self.accept()
|
|
return expr
|
|
if self.tok != ',':
|
|
raise QAPIParseError(self, "expected ',' or '}'")
|
|
self.accept()
|
|
if self.tok != "'":
|
|
raise QAPIParseError(self, "expected string")
|
|
|
|
def get_values(self) -> List[object]:
|
|
expr: List[object] = []
|
|
if self.tok == ']':
|
|
self.accept()
|
|
return expr
|
|
if self.tok not in tuple("{['tf"):
|
|
raise QAPIParseError(
|
|
self, "expected '{', '[', ']', string, or boolean")
|
|
while True:
|
|
expr.append(self.get_expr())
|
|
if self.tok == ']':
|
|
self.accept()
|
|
return expr
|
|
if self.tok != ',':
|
|
raise QAPIParseError(self, "expected ',' or ']'")
|
|
self.accept()
|
|
|
|
def get_expr(self) -> _ExprValue:
|
|
expr: _ExprValue
|
|
if self.tok == '{':
|
|
self.accept()
|
|
expr = self.get_members()
|
|
elif self.tok == '[':
|
|
self.accept()
|
|
expr = self.get_values()
|
|
elif self.tok in tuple("'tf"):
|
|
assert isinstance(self.val, (str, bool))
|
|
expr = self.val
|
|
self.accept()
|
|
else:
|
|
raise QAPIParseError(
|
|
self, "expected '{', '[', string, or boolean")
|
|
return expr
|
|
|
|
def get_doc(self, info: QAPISourceInfo) -> List['QAPIDoc']:
|
|
if self.val != '##':
|
|
raise QAPIParseError(
|
|
self, "junk after '##' at start of documentation comment")
|
|
|
|
docs = []
|
|
cur_doc = QAPIDoc(self, info)
|
|
self.accept(False)
|
|
while self.tok == '#':
|
|
assert isinstance(self.val, str)
|
|
if self.val.startswith('##'):
|
|
# End of doc comment
|
|
if self.val != '##':
|
|
raise QAPIParseError(
|
|
self,
|
|
"junk after '##' at end of documentation comment")
|
|
cur_doc.end_comment()
|
|
docs.append(cur_doc)
|
|
self.accept()
|
|
return docs
|
|
if self.val.startswith('# ='):
|
|
if cur_doc.symbol:
|
|
raise QAPIParseError(
|
|
self,
|
|
"unexpected '=' markup in definition documentation")
|
|
if cur_doc.body.text:
|
|
cur_doc.end_comment()
|
|
docs.append(cur_doc)
|
|
cur_doc = QAPIDoc(self, info)
|
|
cur_doc.append(self.val)
|
|
self.accept(False)
|
|
|
|
raise QAPIParseError(self, "documentation comment must end with '##'")
|
|
|
|
|
|
class QAPIDoc:
|
|
"""
|
|
A documentation comment block, either definition or free-form
|
|
|
|
Definition documentation blocks consist of
|
|
|
|
* a body section: one line naming the definition, followed by an
|
|
overview (any number of lines)
|
|
|
|
* argument sections: a description of each argument (for commands
|
|
and events) or member (for structs, unions and alternates)
|
|
|
|
* features sections: a description of each feature flag
|
|
|
|
* additional (non-argument) sections, possibly tagged
|
|
|
|
Free-form documentation blocks consist only of a body section.
|
|
"""
|
|
|
|
class Section:
|
|
# pylint: disable=too-few-public-methods
|
|
def __init__(self, parser: QAPISchemaParser,
|
|
name: Optional[str] = None, indent: int = 0):
|
|
|
|
# parser, for error messages about indentation
|
|
self._parser = parser
|
|
# optional section name (argument/member or section name)
|
|
self.name = name
|
|
self.text = ''
|
|
# the expected indent level of the text of this section
|
|
self._indent = indent
|
|
|
|
def append(self, line: str) -> None:
|
|
# Strip leading spaces corresponding to the expected indent level
|
|
# Blank lines are always OK.
|
|
if line:
|
|
indent = must_match(r'\s*', line).end()
|
|
if indent < self._indent:
|
|
raise QAPIParseError(
|
|
self._parser,
|
|
"unexpected de-indent (expected at least %d spaces)" %
|
|
self._indent)
|
|
line = line[self._indent:]
|
|
|
|
self.text += line.rstrip() + '\n'
|
|
|
|
class ArgSection(Section):
|
|
def __init__(self, parser: QAPISchemaParser,
|
|
name: str, indent: int = 0):
|
|
super().__init__(parser, name, indent)
|
|
self.member: Optional['QAPISchemaMember'] = None
|
|
|
|
def connect(self, member: 'QAPISchemaMember') -> None:
|
|
self.member = member
|
|
|
|
class NullSection(Section):
|
|
"""
|
|
Immutable dummy section for use at the end of a doc block.
|
|
"""
|
|
# pylint: disable=too-few-public-methods
|
|
def append(self, line: str) -> None:
|
|
assert False, "Text appended after end_comment() called."
|
|
|
|
def __init__(self, parser: QAPISchemaParser, info: QAPISourceInfo):
|
|
# self._parser is used to report errors with QAPIParseError. The
|
|
# resulting error position depends on the state of the parser.
|
|
# It happens to be the beginning of the comment. More or less
|
|
# servicable, but action at a distance.
|
|
self._parser = parser
|
|
self.info = info
|
|
self.symbol: Optional[str] = None
|
|
self.body = QAPIDoc.Section(parser)
|
|
# dicts mapping parameter/feature names to their ArgSection
|
|
self.args: Dict[str, QAPIDoc.ArgSection] = OrderedDict()
|
|
self.features: Dict[str, QAPIDoc.ArgSection] = OrderedDict()
|
|
self.sections: List[QAPIDoc.Section] = []
|
|
# the current section
|
|
self._section = self.body
|
|
self._append_line = self._append_body_line
|
|
|
|
def has_section(self, name: str) -> bool:
|
|
"""Return True if we have a section with this name."""
|
|
for i in self.sections:
|
|
if i.name == name:
|
|
return True
|
|
return False
|
|
|
|
def append(self, line: str) -> None:
|
|
"""
|
|
Parse a comment line and add it to the documentation.
|
|
|
|
The way that the line is dealt with depends on which part of
|
|
the documentation we're parsing right now:
|
|
* The body section: ._append_line is ._append_body_line
|
|
* An argument section: ._append_line is ._append_args_line
|
|
* A features section: ._append_line is ._append_features_line
|
|
* An additional section: ._append_line is ._append_various_line
|
|
"""
|
|
line = line[1:]
|
|
if not line:
|
|
self._append_freeform(line)
|
|
return
|
|
|
|
if line[0] != ' ':
|
|
raise QAPIParseError(self._parser, "missing space after #")
|
|
line = line[1:]
|
|
self._append_line(line)
|
|
|
|
def end_comment(self) -> None:
|
|
self._switch_section(QAPIDoc.NullSection(self._parser))
|
|
|
|
@staticmethod
|
|
def _is_section_tag(name: str) -> bool:
|
|
return name in ('Returns:', 'Since:',
|
|
# those are often singular or plural
|
|
'Note:', 'Notes:',
|
|
'Example:', 'Examples:',
|
|
'TODO:')
|
|
|
|
def _append_body_line(self, line: str) -> None:
|
|
"""
|
|
Process a line of documentation text in the body section.
|
|
|
|
If this a symbol line and it is the section's first line, this
|
|
is a definition documentation block for that symbol.
|
|
|
|
If it's a definition documentation block, another symbol line
|
|
begins the argument section for the argument named by it, and
|
|
a section tag begins an additional section. Start that
|
|
section and append the line to it.
|
|
|
|
Else, append the line to the current section.
|
|
"""
|
|
name = line.split(' ', 1)[0]
|
|
# FIXME not nice: things like '# @foo:' and '# @foo: ' aren't
|
|
# recognized, and get silently treated as ordinary text
|
|
if not self.symbol and not self.body.text and line.startswith('@'):
|
|
if not line.endswith(':'):
|
|
raise QAPIParseError(self._parser, "line should end with ':'")
|
|
self.symbol = line[1:-1]
|
|
# Invalid names are not checked here, but the name provided MUST
|
|
# match the following definition, which *is* validated in expr.py.
|
|
if not self.symbol:
|
|
raise QAPIParseError(
|
|
self._parser, "name required after '@'")
|
|
elif self.symbol:
|
|
# This is a definition documentation block
|
|
if name.startswith('@') and name.endswith(':'):
|
|
self._append_line = self._append_args_line
|
|
self._append_args_line(line)
|
|
elif line == 'Features:':
|
|
self._append_line = self._append_features_line
|
|
elif self._is_section_tag(name):
|
|
self._append_line = self._append_various_line
|
|
self._append_various_line(line)
|
|
else:
|
|
self._append_freeform(line)
|
|
else:
|
|
# This is a free-form documentation block
|
|
self._append_freeform(line)
|
|
|
|
def _append_args_line(self, line: str) -> None:
|
|
"""
|
|
Process a line of documentation text in an argument section.
|
|
|
|
A symbol line begins the next argument section, a section tag
|
|
section or a non-indented line after a blank line begins an
|
|
additional section. Start that section and append the line to
|
|
it.
|
|
|
|
Else, append the line to the current section.
|
|
|
|
"""
|
|
name = line.split(' ', 1)[0]
|
|
|
|
if name.startswith('@') and name.endswith(':'):
|
|
# If line is "@arg: first line of description", find
|
|
# the index of 'f', which is the indent we expect for any
|
|
# following lines. We then remove the leading "@arg:"
|
|
# from line and replace it with spaces so that 'f' has the
|
|
# same index as it did in the original line and can be
|
|
# handled the same way we will handle following lines.
|
|
indent = must_match(r'@\S*:\s*', line).end()
|
|
line = line[indent:]
|
|
if not line:
|
|
# Line was just the "@arg:" header; following lines
|
|
# are not indented
|
|
indent = 0
|
|
else:
|
|
line = ' ' * indent + line
|
|
self._start_args_section(name[1:-1], indent)
|
|
elif self._is_section_tag(name):
|
|
self._append_line = self._append_various_line
|
|
self._append_various_line(line)
|
|
return
|
|
elif (self._section.text.endswith('\n\n')
|
|
and line and not line[0].isspace()):
|
|
if line == 'Features:':
|
|
self._append_line = self._append_features_line
|
|
else:
|
|
self._start_section()
|
|
self._append_line = self._append_various_line
|
|
self._append_various_line(line)
|
|
return
|
|
|
|
self._append_freeform(line)
|
|
|
|
def _append_features_line(self, line: str) -> None:
|
|
name = line.split(' ', 1)[0]
|
|
|
|
if name.startswith('@') and name.endswith(':'):
|
|
# If line is "@arg: first line of description", find
|
|
# the index of 'f', which is the indent we expect for any
|
|
# following lines. We then remove the leading "@arg:"
|
|
# from line and replace it with spaces so that 'f' has the
|
|
# same index as it did in the original line and can be
|
|
# handled the same way we will handle following lines.
|
|
indent = must_match(r'@\S*:\s*', line).end()
|
|
line = line[indent:]
|
|
if not line:
|
|
# Line was just the "@arg:" header; following lines
|
|
# are not indented
|
|
indent = 0
|
|
else:
|
|
line = ' ' * indent + line
|
|
self._start_features_section(name[1:-1], indent)
|
|
elif self._is_section_tag(name):
|
|
self._append_line = self._append_various_line
|
|
self._append_various_line(line)
|
|
return
|
|
elif (self._section.text.endswith('\n\n')
|
|
and line and not line[0].isspace()):
|
|
self._start_section()
|
|
self._append_line = self._append_various_line
|
|
self._append_various_line(line)
|
|
return
|
|
|
|
self._append_freeform(line)
|
|
|
|
def _append_various_line(self, line: str) -> None:
|
|
"""
|
|
Process a line of documentation text in an additional section.
|
|
|
|
A symbol line is an error.
|
|
|
|
A section tag begins an additional section. Start that
|
|
section and append the line to it.
|
|
|
|
Else, append the line to the current section.
|
|
"""
|
|
name = line.split(' ', 1)[0]
|
|
|
|
if name.startswith('@') and name.endswith(':'):
|
|
raise QAPIParseError(self._parser,
|
|
"'%s' can't follow '%s' section"
|
|
% (name, self.sections[0].name))
|
|
if self._is_section_tag(name):
|
|
# If line is "Section: first line of description", find
|
|
# the index of 'f', which is the indent we expect for any
|
|
# following lines. We then remove the leading "Section:"
|
|
# from line and replace it with spaces so that 'f' has the
|
|
# same index as it did in the original line and can be
|
|
# handled the same way we will handle following lines.
|
|
indent = must_match(r'\S*:\s*', line).end()
|
|
line = line[indent:]
|
|
if not line:
|
|
# Line was just the "Section:" header; following lines
|
|
# are not indented
|
|
indent = 0
|
|
else:
|
|
line = ' ' * indent + line
|
|
self._start_section(name[:-1], indent)
|
|
|
|
self._append_freeform(line)
|
|
|
|
def _start_symbol_section(
|
|
self,
|
|
symbols_dict: Dict[str, 'QAPIDoc.ArgSection'],
|
|
name: str,
|
|
indent: int) -> None:
|
|
# FIXME invalid names other than the empty string aren't flagged
|
|
if not name:
|
|
raise QAPIParseError(self._parser, "invalid parameter name")
|
|
if name in symbols_dict:
|
|
raise QAPIParseError(self._parser,
|
|
"'%s' parameter name duplicated" % name)
|
|
assert not self.sections
|
|
new_section = QAPIDoc.ArgSection(self._parser, name, indent)
|
|
self._switch_section(new_section)
|
|
symbols_dict[name] = new_section
|
|
|
|
def _start_args_section(self, name: str, indent: int) -> None:
|
|
self._start_symbol_section(self.args, name, indent)
|
|
|
|
def _start_features_section(self, name: str, indent: int) -> None:
|
|
self._start_symbol_section(self.features, name, indent)
|
|
|
|
def _start_section(self, name: Optional[str] = None,
|
|
indent: int = 0) -> None:
|
|
if name in ('Returns', 'Since') and self.has_section(name):
|
|
raise QAPIParseError(self._parser,
|
|
"duplicated '%s' section" % name)
|
|
new_section = QAPIDoc.Section(self._parser, name, indent)
|
|
self._switch_section(new_section)
|
|
self.sections.append(new_section)
|
|
|
|
def _switch_section(self, new_section: 'QAPIDoc.Section') -> None:
|
|
text = self._section.text = self._section.text.strip()
|
|
|
|
# Only the 'body' section is allowed to have an empty body.
|
|
# All other sections, including anonymous ones, must have text.
|
|
if self._section != self.body and not text:
|
|
# We do not create anonymous sections unless there is
|
|
# something to put in them; this is a parser bug.
|
|
assert self._section.name
|
|
raise QAPIParseError(
|
|
self._parser,
|
|
"empty doc section '%s'" % self._section.name)
|
|
|
|
self._section = new_section
|
|
|
|
def _append_freeform(self, line: str) -> None:
|
|
match = re.match(r'(@\S+:)', line)
|
|
if match:
|
|
raise QAPIParseError(self._parser,
|
|
"'%s' not allowed in free-form documentation"
|
|
% match.group(1))
|
|
self._section.append(line)
|
|
|
|
def connect_member(self, member: 'QAPISchemaMember') -> None:
|
|
if member.name not in self.args:
|
|
# Undocumented TODO outlaw
|
|
self.args[member.name] = QAPIDoc.ArgSection(self._parser,
|
|
member.name)
|
|
self.args[member.name].connect(member)
|
|
|
|
def connect_feature(self, feature: 'QAPISchemaFeature') -> None:
|
|
if feature.name not in self.features:
|
|
raise QAPISemError(feature.info,
|
|
"feature '%s' lacks documentation"
|
|
% feature.name)
|
|
self.features[feature.name].connect(feature)
|
|
|
|
def check_expr(self, expr: TopLevelExpr) -> None:
|
|
if self.has_section('Returns') and 'command' not in expr:
|
|
raise QAPISemError(self.info,
|
|
"'Returns:' is only valid for commands")
|
|
|
|
def check(self) -> None:
|
|
|
|
def check_args_section(
|
|
args: Dict[str, QAPIDoc.ArgSection], what: str
|
|
) -> None:
|
|
bogus = [name for name, section in args.items()
|
|
if not section.member]
|
|
if bogus:
|
|
raise QAPISemError(
|
|
self.info,
|
|
"documented %s%s '%s' %s not exist" % (
|
|
what,
|
|
"s" if len(bogus) > 1 else "",
|
|
"', '".join(bogus),
|
|
"do" if len(bogus) > 1 else "does"
|
|
))
|
|
|
|
check_args_section(self.args, 'member')
|
|
check_args_section(self.features, 'feature')
|