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			627 lines
		
	
	
	
		
			22 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			627 lines
		
	
	
	
		
			22 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
# -*- coding: utf-8 -*-
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"""
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    pyspecific.py
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    ~~~~~~~~~~~~~
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    Sphinx extension with Python doc-specific markup.
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    :copyright: 2008-2014 by Georg Brandl.
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    :license: Python license.
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"""
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import re
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import io
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from os import getenv, path
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from time import asctime
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from pprint import pformat
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from docutils.io import StringOutput
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from docutils.parsers.rst import Directive
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from docutils.utils import new_document
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from docutils import nodes, utils
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from sphinx import addnodes
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from sphinx.builders import Builder
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try:
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    from sphinx.errors import NoUri
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except ImportError:
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    from sphinx.environment import NoUri
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from sphinx.locale import translators
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from sphinx.util import status_iterator, logging
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from sphinx.util.nodes import split_explicit_title
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from sphinx.writers.text import TextWriter, TextTranslator
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from sphinx.writers.latex import LaTeXTranslator
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from sphinx.domains.python import PyModulelevel, PyClassmember
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# Support for checking for suspicious markup
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import suspicious
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ISSUE_URI = 'https://bugs.python.org/issue%s'
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SOURCE_URI = 'https://github.com/python/cpython/tree/master/%s'
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# monkey-patch reST parser to disable alphabetic and roman enumerated lists
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from docutils.parsers.rst.states import Body
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Body.enum.converters['loweralpha'] = \
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    Body.enum.converters['upperalpha'] = \
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    Body.enum.converters['lowerroman'] = \
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    Body.enum.converters['upperroman'] = lambda x: None
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# Support for marking up and linking to bugs.python.org issues
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def issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
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    issue = utils.unescape(text)
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    text = 'bpo-' + issue
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    refnode = nodes.reference(text, text, refuri=ISSUE_URI % issue)
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    return [refnode], []
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# Support for linking to Python source files easily
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def source_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
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    has_t, title, target = split_explicit_title(text)
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    title = utils.unescape(title)
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    target = utils.unescape(target)
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    refnode = nodes.reference(title, title, refuri=SOURCE_URI % target)
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    return [refnode], []
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# Support for marking up implementation details
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class ImplementationDetail(Directive):
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    has_content = True
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    required_arguments = 0
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    optional_arguments = 1
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    final_argument_whitespace = True
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    # This text is copied to templates/dummy.html
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    label_text = 'CPython implementation detail:'
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    def run(self):
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        pnode = nodes.compound(classes=['impl-detail'])
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        label = translators['sphinx'].gettext(self.label_text)
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        content = self.content
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        add_text = nodes.strong(label, label)
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        if self.arguments:
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            n, m = self.state.inline_text(self.arguments[0], self.lineno)
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            pnode.append(nodes.paragraph('', '', *(n + m)))
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        self.state.nested_parse(content, self.content_offset, pnode)
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        if pnode.children and isinstance(pnode[0], nodes.paragraph):
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            content = nodes.inline(pnode[0].rawsource, translatable=True)
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            content.source = pnode[0].source
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            content.line = pnode[0].line
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            content += pnode[0].children
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            pnode[0].replace_self(nodes.paragraph('', '', content,
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                                                  translatable=False))
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            pnode[0].insert(0, add_text)
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            pnode[0].insert(1, nodes.Text(' '))
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        else:
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            pnode.insert(0, nodes.paragraph('', '', add_text))
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        return [pnode]
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# Support for documenting platform availability
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class Availability(Directive):
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    has_content = False
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    required_arguments = 1
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    optional_arguments = 0
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    final_argument_whitespace = True
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    def run(self):
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        availability_ref = ':ref:`Availability <availability>`: '
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        pnode = nodes.paragraph(availability_ref + self.arguments[0],
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                                classes=["availability"],)
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        n, m = self.state.inline_text(availability_ref, self.lineno)
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        pnode.extend(n + m)
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        n, m = self.state.inline_text(self.arguments[0], self.lineno)
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        pnode.extend(n + m)
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        return [pnode]
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# Support for documenting audit event
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def audit_events_purge(app, env, docname):
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    """This is to remove from env.all_audit_events old traces of removed
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    documents.
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    """
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    if not hasattr(env, 'all_audit_events'):
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        return
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    fresh_all_audit_events = {}
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    for name, event in env.all_audit_events.items():
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        event["source"] = [(d, t) for d, t in event["source"] if d != docname]
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        if event["source"]:
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            # Only keep audit_events that have at least one source.
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            fresh_all_audit_events[name] = event
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    env.all_audit_events = fresh_all_audit_events
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def audit_events_merge(app, env, docnames, other):
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    """In Sphinx parallel builds, this merges env.all_audit_events from
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    subprocesses.
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    all_audit_events is a dict of names, with values like:
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    {'source': [(docname, target), ...], 'args': args}
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    """
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    if not hasattr(other, 'all_audit_events'):
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        return
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    if not hasattr(env, 'all_audit_events'):
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        env.all_audit_events = {}
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    for name, value in other.all_audit_events.items():
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        if name in env.all_audit_events:
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            env.all_audit_events[name]["source"].extend(value["source"])
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        else:
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            env.all_audit_events[name] = value
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class AuditEvent(Directive):
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    has_content = True
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    required_arguments = 1
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    optional_arguments = 2
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    final_argument_whitespace = True
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    _label = [
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        "Raises an :ref:`auditing event <auditing>` {name} with no arguments.",
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        "Raises an :ref:`auditing event <auditing>` {name} with argument {args}.",
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        "Raises an :ref:`auditing event <auditing>` {name} with arguments {args}.",
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    ]
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    @property
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    def logger(self):
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        cls = type(self)
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        return logging.getLogger(cls.__module__ + "." + cls.__name__)
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    def run(self):
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        name = self.arguments[0]
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        if len(self.arguments) >= 2 and self.arguments[1]:
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            args = (a.strip() for a in self.arguments[1].strip("'\"").split(","))
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            args = [a for a in args if a]
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        else:
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            args = []
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        label = translators['sphinx'].gettext(self._label[min(2, len(args))])
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        text = label.format(name="``{}``".format(name),
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                            args=", ".join("``{}``".format(a) for a in args if a))
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        env = self.state.document.settings.env
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        if not hasattr(env, 'all_audit_events'):
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            env.all_audit_events = {}
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        new_info = {
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            'source': [],
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            'args': args
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        }
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        info = env.all_audit_events.setdefault(name, new_info)
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        if info is not new_info:
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            if not self._do_args_match(info['args'], new_info['args']):
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                self.logger.warn(
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                    "Mismatched arguments for audit-event {}: {!r} != {!r}"
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                    .format(name, info['args'], new_info['args'])
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                )
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        ids = []
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        try:
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            target = self.arguments[2].strip("\"'")
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        except (IndexError, TypeError):
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            target = None
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        if not target:
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            target = "audit_event_{}_{}".format(
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                re.sub(r'\W', '_', name),
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                len(info['source']),
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            )
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            ids.append(target)
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        info['source'].append((env.docname, target))
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        pnode = nodes.paragraph(text, classes=["audit-hook"], ids=ids)
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        if self.content:
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            self.state.nested_parse(self.content, self.content_offset, pnode)
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        else:
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            n, m = self.state.inline_text(text, self.lineno)
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            pnode.extend(n + m)
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        return [pnode]
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    # This list of sets are allowable synonyms for event argument names.
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    # If two names are in the same set, they are treated as equal for the
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    # purposes of warning. This won't help if number of arguments is
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    # different!
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    _SYNONYMS = [
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        {"file", "path", "fd"},
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    ]
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    def _do_args_match(self, args1, args2):
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        if args1 == args2:
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            return True
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        if len(args1) != len(args2):
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            return False
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        for a1, a2 in zip(args1, args2):
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            if a1 == a2:
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                continue
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            if any(a1 in s and a2 in s for s in self._SYNONYMS):
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                continue
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            return False
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        return True
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class audit_event_list(nodes.General, nodes.Element):
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    pass
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class AuditEventListDirective(Directive):
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    def run(self):
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        return [audit_event_list('')]
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# Support for documenting decorators
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class PyDecoratorMixin(object):
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    def handle_signature(self, sig, signode):
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        ret = super(PyDecoratorMixin, self).handle_signature(sig, signode)
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        signode.insert(0, addnodes.desc_addname('@', '@'))
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        return ret
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    def needs_arglist(self):
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        return False
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class PyDecoratorFunction(PyDecoratorMixin, PyModulelevel):
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    def run(self):
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        # a decorator function is a function after all
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        self.name = 'py:function'
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        return PyModulelevel.run(self)
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class PyDecoratorMethod(PyDecoratorMixin, PyClassmember):
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    def run(self):
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        self.name = 'py:method'
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        return PyClassmember.run(self)
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class PyCoroutineMixin(object):
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    def handle_signature(self, sig, signode):
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        ret = super(PyCoroutineMixin, self).handle_signature(sig, signode)
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        signode.insert(0, addnodes.desc_annotation('coroutine ', 'coroutine '))
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        return ret
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class PyAwaitableMixin(object):
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    def handle_signature(self, sig, signode):
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        ret = super(PyAwaitableMixin, self).handle_signature(sig, signode)
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        signode.insert(0, addnodes.desc_annotation('awaitable ', 'awaitable '))
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        return ret
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class PyCoroutineFunction(PyCoroutineMixin, PyModulelevel):
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    def run(self):
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        self.name = 'py:function'
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        return PyModulelevel.run(self)
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class PyCoroutineMethod(PyCoroutineMixin, PyClassmember):
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    def run(self):
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        self.name = 'py:method'
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        return PyClassmember.run(self)
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class PyAwaitableFunction(PyAwaitableMixin, PyClassmember):
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    def run(self):
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        self.name = 'py:function'
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        return PyClassmember.run(self)
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class PyAwaitableMethod(PyAwaitableMixin, PyClassmember):
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    def run(self):
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        self.name = 'py:method'
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        return PyClassmember.run(self)
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class PyAbstractMethod(PyClassmember):
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    def handle_signature(self, sig, signode):
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        ret = super(PyAbstractMethod, self).handle_signature(sig, signode)
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        signode.insert(0, addnodes.desc_annotation('abstractmethod ',
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                                                   'abstractmethod '))
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        return ret
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    def run(self):
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        self.name = 'py:method'
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        return PyClassmember.run(self)
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# Support for documenting version of removal in deprecations
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class DeprecatedRemoved(Directive):
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    has_content = True
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    required_arguments = 2
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    optional_arguments = 1
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    final_argument_whitespace = True
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    option_spec = {}
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    _deprecated_label = 'Deprecated since version {deprecated}, will be removed in version {removed}'
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    _removed_label = 'Deprecated since version {deprecated}, removed in version {removed}'
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    def run(self):
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        node = addnodes.versionmodified()
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        node.document = self.state.document
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        node['type'] = 'deprecated-removed'
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        version = (self.arguments[0], self.arguments[1])
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        node['version'] = version
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        env = self.state.document.settings.env
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        current_version = tuple(int(e) for e in env.config.version.split('.'))
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        removed_version = tuple(int(e) for e in self.arguments[1].split('.'))
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        if current_version < removed_version:
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            label = self._deprecated_label
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        else:
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            label = self._removed_label
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        label = translators['sphinx'].gettext(label)
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        text = label.format(deprecated=self.arguments[0], removed=self.arguments[1])
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        if len(self.arguments) == 3:
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            inodes, messages = self.state.inline_text(self.arguments[2],
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                                                      self.lineno+1)
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            para = nodes.paragraph(self.arguments[2], '', *inodes, translatable=False)
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            node.append(para)
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        else:
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            messages = []
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        if self.content:
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            self.state.nested_parse(self.content, self.content_offset, node)
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        if len(node):
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            if isinstance(node[0], nodes.paragraph) and node[0].rawsource:
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                content = nodes.inline(node[0].rawsource, translatable=True)
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                content.source = node[0].source
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                content.line = node[0].line
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                content += node[0].children
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                node[0].replace_self(nodes.paragraph('', '', content, translatable=False))
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            node[0].insert(0, nodes.inline('', '%s: ' % text,
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                                           classes=['versionmodified']))
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        else:
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            para = nodes.paragraph('', '',
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                                   nodes.inline('', '%s.' % text,
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                                                classes=['versionmodified']),
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                                   translatable=False)
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            node.append(para)
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        env = self.state.document.settings.env
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        env.get_domain('changeset').note_changeset(node)
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        return [node] + messages
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# Support for including Misc/NEWS
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issue_re = re.compile('(?:[Ii]ssue #|bpo-)([0-9]+)')
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whatsnew_re = re.compile(r"(?im)^what's new in (.*?)\??$")
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class MiscNews(Directive):
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    has_content = False
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    required_arguments = 1
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    optional_arguments = 0
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    final_argument_whitespace = False
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    option_spec = {}
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    def run(self):
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        fname = self.arguments[0]
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        source = self.state_machine.input_lines.source(
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            self.lineno - self.state_machine.input_offset - 1)
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        source_dir = getenv('PY_MISC_NEWS_DIR')
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        if not source_dir:
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            source_dir = path.dirname(path.abspath(source))
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        fpath = path.join(source_dir, fname)
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        self.state.document.settings.record_dependencies.add(fpath)
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        try:
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            with io.open(fpath, encoding='utf-8') as fp:
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                content = fp.read()
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        except Exception:
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            text = 'The NEWS file is not available.'
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            node = nodes.strong(text, text)
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            return [node]
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        content = issue_re.sub(r'`bpo-\1 <https://bugs.python.org/issue\1>`__',
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                               content)
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        content = whatsnew_re.sub(r'\1', content)
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        # remove first 3 lines as they are the main heading
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        lines = ['.. default-role:: obj', ''] + content.splitlines()[3:]
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        self.state_machine.insert_input(lines, fname)
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        return []
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# Support for building "topic help" for pydoc
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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}
 |