Source code for sphinx.ext.coverage

# -*- coding: utf-8 -*-
"""
    sphinx.ext.coverage
    ~~~~~~~~~~~~~~~~~~~

    Check Python modules and C API for coverage.  Mostly written by Josip
    Dzolonga for the Google Highly Open Participation contest.

    :copyright: Copyright 2007-2017 by the Sphinx team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

import re
import glob
import inspect
from os import path

from six import iteritems
from six.moves import cPickle as pickle

import sphinx
from sphinx.builders import Builder
from sphinx.util import logging
from sphinx.util.inspect import safe_getattr

if False:
    # For type annotation
    from typing import Any, Callable, Dict, IO, List, Pattern, Set, Tuple  # NOQA
    from sphinx.application import Sphinx  # NOQA

logger = logging.getLogger(__name__)


# utility
def write_header(f, text, char='-'):
    # type:(IO, unicode, unicode) -> None
    f.write(text + '\n')
    f.write(char * len(text) + '\n')


def compile_regex_list(name, exps):
    # type: (unicode, unicode) -> List[Pattern]
    lst = []
    for exp in exps:
        try:
            lst.append(re.compile(exp))
        except Exception:
            logger.warning('invalid regex %r in %s', exp, name)
    return lst


[docs]class CoverageBuilder(Builder): name = 'coverage' def init(self): # type: () -> None self.c_sourcefiles = [] # type: List[unicode] for pattern in self.config.coverage_c_path: pattern = path.join(self.srcdir, pattern) self.c_sourcefiles.extend(glob.glob(pattern)) self.c_regexes = [] # type: List[Tuple[unicode, Pattern]] for (name, exp) in self.config.coverage_c_regexes.items(): try: self.c_regexes.append((name, re.compile(exp))) except Exception: logger.warning('invalid regex %r in coverage_c_regexes', exp) self.c_ignorexps = {} # type: Dict[unicode, List[Pattern]] for (name, exps) in iteritems(self.config.coverage_ignore_c_items): self.c_ignorexps[name] = compile_regex_list('coverage_ignore_c_items', exps) self.mod_ignorexps = compile_regex_list('coverage_ignore_modules', self.config.coverage_ignore_modules) self.cls_ignorexps = compile_regex_list('coverage_ignore_classes', self.config.coverage_ignore_classes) self.fun_ignorexps = compile_regex_list('coverage_ignore_functions', self.config.coverage_ignore_functions) def get_outdated_docs(self): # type: () -> unicode return 'coverage overview' def write(self, *ignored): # type: (Any) -> None self.py_undoc = {} # type: Dict[unicode, Dict[unicode, Any]] self.build_py_coverage() self.write_py_coverage() self.c_undoc = {} # type: Dict[unicode, Set[Tuple[unicode, unicode]]] self.build_c_coverage() self.write_c_coverage() def build_c_coverage(self): # type: () -> None # Fetch all the info from the header files c_objects = self.env.domaindata['c']['objects'] for filename in self.c_sourcefiles: undoc = set() with open(filename, 'r') as f: for line in f: for key, regex in self.c_regexes: match = regex.match(line) if match: name = match.groups()[0] if name not in c_objects: for exp in self.c_ignorexps.get(key, []): if exp.match(name): break else: undoc.add((key, name)) continue if undoc: self.c_undoc[filename] = undoc def write_c_coverage(self): # type: () -> None output_file = path.join(self.outdir, 'c.txt') with open(output_file, 'w') as op: if self.config.coverage_write_headline: write_header(op, 'Undocumented C API elements', '=') op.write('\n') for filename, undoc in iteritems(self.c_undoc): write_header(op, filename) for typ, name in sorted(undoc): op.write(' * %-50s [%9s]\n' % (name, typ)) op.write('\n') def build_py_coverage(self): # type: () -> None objects = self.env.domaindata['py']['objects'] modules = self.env.domaindata['py']['modules'] skip_undoc = self.config.coverage_skip_undoc_in_source for mod_name in modules: ignore = False for exp in self.mod_ignorexps: if exp.match(mod_name): ignore = True break if ignore: continue try: mod = __import__(mod_name, fromlist=['foo']) except ImportError as err: logger.warning('module %s could not be imported: %s', mod_name, err) self.py_undoc[mod_name] = {'error': err} continue funcs = [] classes = {} # type: Dict[unicode, List[unicode]] for name, obj in inspect.getmembers(mod): # diverse module attributes are ignored: if name[0] == '_': # begins in an underscore continue if not hasattr(obj, '__module__'): # cannot be attributed to a module continue if obj.__module__ != mod_name: # is not defined in this module continue full_name = '%s.%s' % (mod_name, name) if inspect.isfunction(obj): if full_name not in objects: for exp in self.fun_ignorexps: if exp.match(name): break else: if skip_undoc and not obj.__doc__: continue funcs.append(name) elif inspect.isclass(obj): for exp in self.cls_ignorexps: if exp.match(name): break else: if full_name not in objects: if skip_undoc and not obj.__doc__: continue # not documented at all classes[name] = [] continue attrs = [] # type: List[unicode] for attr_name in dir(obj): if attr_name not in obj.__dict__: continue try: attr = safe_getattr(obj, attr_name) except AttributeError: continue if not (inspect.ismethod(attr) or inspect.isfunction(attr)): continue if attr_name[0] == '_': # starts with an underscore, ignore it continue if skip_undoc and not attr.__doc__: # skip methods without docstring if wished continue full_attr_name = '%s.%s' % (full_name, attr_name) if full_attr_name not in objects: attrs.append(attr_name) if attrs: # some attributes are undocumented classes[name] = attrs self.py_undoc[mod_name] = {'funcs': funcs, 'classes': classes} def write_py_coverage(self): # type: () -> None output_file = path.join(self.outdir, 'python.txt') failed = [] with open(output_file, 'w') as op: if self.config.coverage_write_headline: write_header(op, 'Undocumented Python objects', '=') keys = sorted(self.py_undoc.keys()) for name in keys: undoc = self.py_undoc[name] if 'error' in undoc: failed.append((name, undoc['error'])) else: if not undoc['classes'] and not undoc['funcs']: continue write_header(op, name) if undoc['funcs']: op.write('Functions:\n') op.writelines(' * %s\n' % x for x in undoc['funcs']) op.write('\n') if undoc['classes']: op.write('Classes:\n') for name, methods in sorted( iteritems(undoc['classes'])): if not methods: op.write(' * %s\n' % name) else: op.write(' * %s -- missing methods:\n\n' % name) op.writelines(' - %s\n' % x for x in methods) op.write('\n') if failed: write_header(op, 'Modules that failed to import') op.writelines(' * %s -- %s\n' % x for x in failed) def finish(self): # type: () -> None # dump the coverage data to a pickle file too picklepath = path.join(self.outdir, 'undoc.pickle') with open(picklepath, 'wb') as dumpfile: pickle.dump((self.py_undoc, self.c_undoc), dumpfile)
def setup(app): # type: (Sphinx) -> Dict[unicode, Any] app.add_builder(CoverageBuilder) app.add_config_value('coverage_ignore_modules', [], False) app.add_config_value('coverage_ignore_functions', [], False) app.add_config_value('coverage_ignore_classes', [], False) app.add_config_value('coverage_c_path', [], False) app.add_config_value('coverage_c_regexes', {}, False) app.add_config_value('coverage_ignore_c_items', {}, False) app.add_config_value('coverage_write_headline', True, False) app.add_config_value('coverage_skip_undoc_in_source', False, False) return {'version': sphinx.__display_version__, 'parallel_read_safe': True}