cpython/Doc/tools/extensions/pyspecific.py

634 lines
22 KiB
Python

# -*- coding: utf-8 -*-
"""
pyspecific.py
~~~~~~~~~~~~~
Sphinx extension with Python doc-specific markup.
:copyright: 2008-2014 by Georg Brandl.
:license: Python license.
"""
import re
import io
from os import getenv, path
from time import asctime
from pprint import pformat
from docutils.io import StringOutput
from docutils.parsers.rst import Directive
from docutils.utils import new_document
from docutils import nodes, utils
from sphinx import addnodes
from sphinx.builders import Builder
try:
from sphinx.errors import NoUri
except ImportError:
from sphinx.environment import NoUri
from sphinx.locale import translators
from sphinx.util import status_iterator, logging
from sphinx.util.nodes import split_explicit_title
from sphinx.writers.text import TextWriter, TextTranslator
from sphinx.writers.latex import LaTeXTranslator
try:
from sphinx.domains.python import PyFunction, PyMethod
except ImportError:
from sphinx.domains.python import PyClassmember as PyMethod
from sphinx.domains.python import PyModulelevel as PyFunction
# Support for checking for suspicious markup
import suspicious
ISSUE_URI = 'https://bugs.python.org/issue%s'
SOURCE_URI = 'https://github.com/python/cpython/tree/master/%s'
# monkey-patch reST parser to disable alphabetic and roman enumerated lists
from docutils.parsers.rst.states import Body
Body.enum.converters['loweralpha'] = \
Body.enum.converters['upperalpha'] = \
Body.enum.converters['lowerroman'] = \
Body.enum.converters['upperroman'] = lambda x: None
# Support for marking up and linking to bugs.python.org issues
def issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
issue = utils.unescape(text)
text = 'bpo-' + issue
refnode = nodes.reference(text, text, refuri=ISSUE_URI % issue)
return [refnode], []
# Support for linking to Python source files easily
def source_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
has_t, title, target = split_explicit_title(text)
title = utils.unescape(title)
target = utils.unescape(target)
refnode = nodes.reference(title, title, refuri=SOURCE_URI % target)
return [refnode], []
# Support for marking up implementation details
class ImplementationDetail(Directive):
has_content = True
required_arguments = 0
optional_arguments = 1
final_argument_whitespace = True
# This text is copied to templates/dummy.html
label_text = 'CPython implementation detail:'
def run(self):
pnode = nodes.compound(classes=['impl-detail'])
label = translators['sphinx'].gettext(self.label_text)
content = self.content
add_text = nodes.strong(label, label)
if self.arguments:
n, m = self.state.inline_text(self.arguments[0], self.lineno)
pnode.append(nodes.paragraph('', '', *(n + m)))
self.state.nested_parse(content, self.content_offset, pnode)
if pnode.children and isinstance(pnode[0], nodes.paragraph):
content = nodes.inline(pnode[0].rawsource, translatable=True)
content.source = pnode[0].source
content.line = pnode[0].line
content += pnode[0].children
pnode[0].replace_self(nodes.paragraph('', '', content,
translatable=False))
pnode[0].insert(0, add_text)
pnode[0].insert(1, nodes.Text(' '))
else:
pnode.insert(0, nodes.paragraph('', '', add_text))
return [pnode]
# Support for documenting platform availability
class Availability(Directive):
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
def run(self):
availability_ref = ':ref:`Availability <availability>`: '
pnode = nodes.paragraph(availability_ref + self.arguments[0],
classes=["availability"],)
n, m = self.state.inline_text(availability_ref, self.lineno)
pnode.extend(n + m)
n, m = self.state.inline_text(self.arguments[0], self.lineno)
pnode.extend(n + m)
return [pnode]
# Support for documenting audit event
def audit_events_purge(app, env, docname):
"""This is to remove from env.all_audit_events old traces of removed
documents.
"""
if not hasattr(env, 'all_audit_events'):
return
fresh_all_audit_events = {}
for name, event in env.all_audit_events.items():
event["source"] = [(d, t) for d, t in event["source"] if d != docname]
if event["source"]:
# Only keep audit_events that have at least one source.
fresh_all_audit_events[name] = event
env.all_audit_events = fresh_all_audit_events
def audit_events_merge(app, env, docnames, other):
"""In Sphinx parallel builds, this merges env.all_audit_events from
subprocesses.
all_audit_events is a dict of names, with values like:
{'source': [(docname, target), ...], 'args': args}
"""
if not hasattr(other, 'all_audit_events'):
return
if not hasattr(env, 'all_audit_events'):
env.all_audit_events = {}
for name, value in other.all_audit_events.items():
if name in env.all_audit_events:
env.all_audit_events[name]["source"].extend(value["source"])
else:
env.all_audit_events[name] = value
class AuditEvent(Directive):
has_content = True
required_arguments = 1
optional_arguments = 2
final_argument_whitespace = True
_label = [
"Raises an :ref:`auditing event <auditing>` {name} with no arguments.",
"Raises an :ref:`auditing event <auditing>` {name} with argument {args}.",
"Raises an :ref:`auditing event <auditing>` {name} with arguments {args}.",
]
@property
def logger(self):
cls = type(self)
return logging.getLogger(cls.__module__ + "." + cls.__name__)
def run(self):
name = self.arguments[0]
if len(self.arguments) >= 2 and self.arguments[1]:
args = (a.strip() for a in self.arguments[1].strip("'\"").split(","))
args = [a for a in args if a]
else:
args = []
label = translators['sphinx'].gettext(self._label[min(2, len(args))])
text = label.format(name="``{}``".format(name),
args=", ".join("``{}``".format(a) for a in args if a))
env = self.state.document.settings.env
if not hasattr(env, 'all_audit_events'):
env.all_audit_events = {}
new_info = {
'source': [],
'args': args
}
info = env.all_audit_events.setdefault(name, new_info)
if info is not new_info:
if not self._do_args_match(info['args'], new_info['args']):
self.logger.warn(
"Mismatched arguments for audit-event {}: {!r} != {!r}"
.format(name, info['args'], new_info['args'])
)
ids = []
try:
target = self.arguments[2].strip("\"'")
except (IndexError, TypeError):
target = None
if not target:
target = "audit_event_{}_{}".format(
re.sub(r'\W', '_', name),
len(info['source']),
)
ids.append(target)
info['source'].append((env.docname, target))
pnode = nodes.paragraph(text, classes=["audit-hook"], ids=ids)
if self.content:
self.state.nested_parse(self.content, self.content_offset, pnode)
else:
n, m = self.state.inline_text(text, self.lineno)
pnode.extend(n + m)
return [pnode]
# This list of sets are allowable synonyms for event argument names.
# If two names are in the same set, they are treated as equal for the
# purposes of warning. This won't help if number of arguments is
# different!
_SYNONYMS = [
{"file", "path", "fd"},
]
def _do_args_match(self, args1, args2):
if args1 == args2:
return True
if len(args1) != len(args2):
return False
for a1, a2 in zip(args1, args2):
if a1 == a2:
continue
if any(a1 in s and a2 in s for s in self._SYNONYMS):
continue
return False
return True
class audit_event_list(nodes.General, nodes.Element):
pass
class AuditEventListDirective(Directive):
def run(self):
return [audit_event_list('')]
# Support for documenting decorators
class PyDecoratorMixin(object):
def handle_signature(self, sig, signode):
ret = super(PyDecoratorMixin, self).handle_signature(sig, signode)
signode.insert(0, addnodes.desc_addname('@', '@'))
return ret
def needs_arglist(self):
return False
class PyDecoratorFunction(PyDecoratorMixin, PyFunction):
def run(self):
# a decorator function is a function after all
self.name = 'py:function'
return PyFunction.run(self)
# TODO: Use sphinx.domains.python.PyDecoratorMethod when possible
class PyDecoratorMethod(PyDecoratorMixin, PyMethod):
def run(self):
self.name = 'py:method'
return PyMethod.run(self)
class PyCoroutineMixin(object):
def handle_signature(self, sig, signode):
ret = super(PyCoroutineMixin, self).handle_signature(sig, signode)
signode.insert(0, addnodes.desc_annotation('coroutine ', 'coroutine '))
return ret
class PyAwaitableMixin(object):
def handle_signature(self, sig, signode):
ret = super(PyAwaitableMixin, self).handle_signature(sig, signode)
signode.insert(0, addnodes.desc_annotation('awaitable ', 'awaitable '))
return ret
class PyCoroutineFunction(PyCoroutineMixin, PyFunction):
def run(self):
self.name = 'py:function'
return PyFunction.run(self)
class PyCoroutineMethod(PyCoroutineMixin, PyMethod):
def run(self):
self.name = 'py:method'
return PyMethod.run(self)
class PyAwaitableFunction(PyAwaitableMixin, PyFunction):
def run(self):
self.name = 'py:function'
return PyFunction.run(self)
class PyAwaitableMethod(PyAwaitableMixin, PyMethod):
def run(self):
self.name = 'py:method'
return PyMethod.run(self)
class PyAbstractMethod(PyMethod):
def handle_signature(self, sig, signode):
ret = super(PyAbstractMethod, self).handle_signature(sig, signode)
signode.insert(0, addnodes.desc_annotation('abstractmethod ',
'abstractmethod '))
return ret
def run(self):
self.name = 'py:method'
return PyMethod.run(self)
# Support for documenting version of removal in deprecations
class DeprecatedRemoved(Directive):
has_content = True
required_arguments = 2
optional_arguments = 1
final_argument_whitespace = True
option_spec = {}
_deprecated_label = 'Deprecated since version {deprecated}, will be removed in version {removed}'
_removed_label = 'Deprecated since version {deprecated}, removed in version {removed}'
def run(self):
node = addnodes.versionmodified()
node.document = self.state.document
node['type'] = 'deprecated-removed'
version = (self.arguments[0], self.arguments[1])
node['version'] = version
env = self.state.document.settings.env
current_version = tuple(int(e) for e in env.config.version.split('.'))
removed_version = tuple(int(e) for e in self.arguments[1].split('.'))
if current_version < removed_version:
label = self._deprecated_label
else:
label = self._removed_label
label = translators['sphinx'].gettext(label)
text = label.format(deprecated=self.arguments[0], removed=self.arguments[1])
if len(self.arguments) == 3:
inodes, messages = self.state.inline_text(self.arguments[2],
self.lineno+1)
para = nodes.paragraph(self.arguments[2], '', *inodes, translatable=False)
node.append(para)
else:
messages = []
if self.content:
self.state.nested_parse(self.content, self.content_offset, node)
if len(node):
if isinstance(node[0], nodes.paragraph) and node[0].rawsource:
content = nodes.inline(node[0].rawsource, translatable=True)
content.source = node[0].source
content.line = node[0].line
content += node[0].children
node[0].replace_self(nodes.paragraph('', '', content, translatable=False))
node[0].insert(0, nodes.inline('', '%s: ' % text,
classes=['versionmodified']))
else:
para = nodes.paragraph('', '',
nodes.inline('', '%s.' % text,
classes=['versionmodified']),
translatable=False)
node.append(para)
env = self.state.document.settings.env
env.get_domain('changeset').note_changeset(node)
return [node] + messages
# Support for including Misc/NEWS
issue_re = re.compile('(?:[Ii]ssue #|bpo-)([0-9]+)')
whatsnew_re = re.compile(r"(?im)^what's new in (.*?)\??$")
class MiscNews(Directive):
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = False
option_spec = {}
def run(self):
fname = self.arguments[0]
source = self.state_machine.input_lines.source(
self.lineno - self.state_machine.input_offset - 1)
source_dir = getenv('PY_MISC_NEWS_DIR')
if not source_dir:
source_dir = path.dirname(path.abspath(source))
fpath = path.join(source_dir, fname)
self.state.document.settings.record_dependencies.add(fpath)
try:
with io.open(fpath, encoding='utf-8') as fp:
content = fp.read()
except Exception:
text = 'The NEWS file is not available.'
node = nodes.strong(text, text)
return [node]
content = issue_re.sub(r'`bpo-\1 <https://bugs.python.org/issue\1>`__',
content)
content = whatsnew_re.sub(r'\1', content)
# remove first 3 lines as they are the main heading
lines = ['.. default-role:: obj', ''] + content.splitlines()[3:]
self.state_machine.insert_input(lines, fname)
return []
# Support for building "topic help" for pydoc
pydoc_topic_labels = [
'assert', 'assignment', 'async', 'atom-identifiers', 'atom-literals',
'attribute-access', 'attribute-references', 'augassign', 'await',
'binary', 'bitwise', 'bltin-code-objects', 'bltin-ellipsis-object',
'bltin-null-object', 'bltin-type-objects', 'booleans',
'break', 'callable-types', 'calls', 'class', 'comparisons', 'compound',
'context-managers', 'continue', 'conversions', 'customization', 'debugger',
'del', 'dict', 'dynamic-features', 'else', 'exceptions', 'execmodel',
'exprlists', 'floating', 'for', 'formatstrings', 'function', 'global',
'id-classes', 'identifiers', 'if', 'imaginary', 'import', 'in', 'integers',
'lambda', 'lists', 'naming', 'nonlocal', 'numbers', 'numeric-types',
'objects', 'operator-summary', 'pass', 'power', 'raise', 'return',
'sequence-types', 'shifting', 'slicings', 'specialattrs', 'specialnames',
'string-methods', 'strings', 'subscriptions', 'truth', 'try', 'types',
'typesfunctions', 'typesmapping', 'typesmethods', 'typesmodules',
'typesseq', 'typesseq-mutable', 'unary', 'while', 'with', 'yield'
]
class PydocTopicsBuilder(Builder):
name = 'pydoc-topics'
default_translator_class = TextTranslator
def init(self):
self.topics = {}
self.secnumbers = {}
def get_outdated_docs(self):
return 'all pydoc topics'
def get_target_uri(self, docname, typ=None):
return '' # no URIs
def write(self, *ignored):
writer = TextWriter(self)
for label in status_iterator(pydoc_topic_labels,
'building topics... ',
length=len(pydoc_topic_labels)):
if label not in self.env.domaindata['std']['labels']:
self.env.logger.warn('label %r not in documentation' % label)
continue
docname, labelid, sectname = self.env.domaindata['std']['labels'][label]
doctree = self.env.get_and_resolve_doctree(docname, self)
document = new_document('<section node>')
document.append(doctree.ids[labelid])
destination = StringOutput(encoding='utf-8')
writer.write(document, destination)
self.topics[label] = writer.output
def finish(self):
f = open(path.join(self.outdir, 'topics.py'), 'wb')
try:
f.write('# -*- coding: utf-8 -*-\n'.encode('utf-8'))
f.write(('# Autogenerated by Sphinx on %s\n' % asctime()).encode('utf-8'))
f.write(('topics = ' + pformat(self.topics) + '\n').encode('utf-8'))
finally:
f.close()
# Support for documenting Opcodes
opcode_sig_re = re.compile(r'(\w+(?:\+\d)?)(?:\s*\((.*)\))?')
def parse_opcode_signature(env, sig, signode):
"""Transform an opcode signature into RST nodes."""
m = opcode_sig_re.match(sig)
if m is None:
raise ValueError
opname, arglist = m.groups()
signode += addnodes.desc_name(opname, opname)
if arglist is not None:
paramlist = addnodes.desc_parameterlist()
signode += paramlist
paramlist += addnodes.desc_parameter(arglist, arglist)
return opname.strip()
# Support for documenting pdb commands
pdbcmd_sig_re = re.compile(r'([a-z()!]+)\s*(.*)')
# later...
# pdbargs_tokens_re = re.compile(r'''[a-zA-Z]+ | # identifiers
# [.,:]+ | # punctuation
# [\[\]()] | # parens
# \s+ # whitespace
# ''', re.X)
def parse_pdb_command(env, sig, signode):
"""Transform a pdb command signature into RST nodes."""
m = pdbcmd_sig_re.match(sig)
if m is None:
raise ValueError
name, args = m.groups()
fullname = name.replace('(', '').replace(')', '')
signode += addnodes.desc_name(name, name)
if args:
signode += addnodes.desc_addname(' '+args, ' '+args)
return fullname
def process_audit_events(app, doctree, fromdocname):
for node in doctree.traverse(audit_event_list):
break
else:
return
env = app.builder.env
table = nodes.table(cols=3)
group = nodes.tgroup(
'',
nodes.colspec(colwidth=30),
nodes.colspec(colwidth=55),
nodes.colspec(colwidth=15),
cols=3,
)
head = nodes.thead()
body = nodes.tbody()
table += group
group += head
group += body
row = nodes.row()
row += nodes.entry('', nodes.paragraph('', nodes.Text('Audit event')))
row += nodes.entry('', nodes.paragraph('', nodes.Text('Arguments')))
row += nodes.entry('', nodes.paragraph('', nodes.Text('References')))
head += row
for name in sorted(getattr(env, "all_audit_events", ())):
audit_event = env.all_audit_events[name]
row = nodes.row()
node = nodes.paragraph('', nodes.Text(name))
row += nodes.entry('', node)
node = nodes.paragraph()
for i, a in enumerate(audit_event['args']):
if i:
node += nodes.Text(", ")
node += nodes.literal(a, nodes.Text(a))
row += nodes.entry('', node)
node = nodes.paragraph()
backlinks = enumerate(sorted(set(audit_event['source'])), start=1)
for i, (doc, label) in backlinks:
if isinstance(label, str):
ref = nodes.reference("", nodes.Text("[{}]".format(i)), internal=True)
try:
ref['refuri'] = "{}#{}".format(
app.builder.get_relative_uri(fromdocname, doc),
label,
)
except NoUri:
continue
node += ref
row += nodes.entry('', node)
body += row
for node in doctree.traverse(audit_event_list):
node.replace_self(table)
def setup(app):
app.add_role('issue', issue_role)
app.add_role('source', source_role)
app.add_directive('impl-detail', ImplementationDetail)
app.add_directive('availability', Availability)
app.add_directive('audit-event', AuditEvent)
app.add_directive('audit-event-table', AuditEventListDirective)
app.add_directive('deprecated-removed', DeprecatedRemoved)
app.add_builder(PydocTopicsBuilder)
app.add_builder(suspicious.CheckSuspiciousMarkupBuilder)
app.add_object_type('opcode', 'opcode', '%s (opcode)', parse_opcode_signature)
app.add_object_type('pdbcommand', 'pdbcmd', '%s (pdb command)', parse_pdb_command)
app.add_object_type('2to3fixer', '2to3fixer', '%s (2to3 fixer)')
app.add_directive_to_domain('py', 'decorator', PyDecoratorFunction)
app.add_directive_to_domain('py', 'decoratormethod', PyDecoratorMethod)
app.add_directive_to_domain('py', 'coroutinefunction', PyCoroutineFunction)
app.add_directive_to_domain('py', 'coroutinemethod', PyCoroutineMethod)
app.add_directive_to_domain('py', 'awaitablefunction', PyAwaitableFunction)
app.add_directive_to_domain('py', 'awaitablemethod', PyAwaitableMethod)
app.add_directive_to_domain('py', 'abstractmethod', PyAbstractMethod)
app.add_directive('miscnews', MiscNews)
app.connect('doctree-resolved', process_audit_events)
app.connect('env-merge-info', audit_events_merge)
app.connect('env-purge-doc', audit_events_purge)
return {'version': '1.0', 'parallel_read_safe': True}