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numpydoc.py
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Sun, Oct 20, 21:04

numpydoc.py
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"""
========
numpydoc
========
Sphinx extension that handles docstrings in the Numpy standard format. [1]
It will:
- Convert Parameters etc. sections to field lists.
- Convert See Also section to a See also entry.
- Renumber references.
- Extract the signature from the docstring, if it can't be determined otherwise.
.. [1] http://projects.scipy.org/numpy/wiki/CodingStyleGuidelines#docstring-standard
"""
import sphinx
if sphinx.__version__ < '1.0.1':
raise RuntimeError("Sphinx 1.0.1 or newer is required")
import os, re, pydoc
from docscrape_sphinx import get_doc_object, SphinxDocString
from sphinx.util.compat import Directive
import inspect
def mangle_docstrings(app, what, name, obj, options, lines,
reference_offset=[0]):
cfg = dict(use_plots=app.config.numpydoc_use_plots,
show_class_members=app.config.numpydoc_show_class_members)
if what == 'module':
# Strip top title
title_re = re.compile(ur'^\s*[#*=]{4,}\n[a-z0-9 -]+\n[#*=]{4,}\s*',
re.I|re.S)
lines[:] = title_re.sub(u'', u"\n".join(lines)).split(u"\n")
else:
doc = get_doc_object(obj, what, u"\n".join(lines), config=cfg)
lines[:] = unicode(doc).split(u"\n")
if app.config.numpydoc_edit_link and hasattr(obj, '__name__') and \
obj.__name__:
if hasattr(obj, '__module__'):
v = dict(full_name=u"%s.%s" % (obj.__module__, obj.__name__))
else:
v = dict(full_name=obj.__name__)
lines += [u'', u'.. htmlonly::', '']
lines += [u' %s' % x for x in
(app.config.numpydoc_edit_link % v).split("\n")]
# replace reference numbers so that there are no duplicates
references = []
for line in lines:
line = line.strip()
m = re.match(ur'^.. \[([a-z0-9_.-])\]', line, re.I)
if m:
references.append(m.group(1))
# start renaming from the longest string, to avoid overwriting parts
references.sort(key=lambda x: -len(x))
if references:
for i, line in enumerate(lines):
for r in references:
if re.match(ur'^\d+$', r):
new_r = u"R%d" % (reference_offset[0] + int(r))
else:
new_r = u"%s%d" % (r, reference_offset[0])
lines[i] = lines[i].replace(u'[%s]_' % r,
u'[%s]_' % new_r)
lines[i] = lines[i].replace(u'.. [%s]' % r,
u'.. [%s]' % new_r)
reference_offset[0] += len(references)
def mangle_signature(app, what, name, obj, options, sig, retann):
# Do not try to inspect classes that don't define `__init__`
if (inspect.isclass(obj) and
(not hasattr(obj, '__init__') or
'initializes x; see ' in pydoc.getdoc(obj.__init__))):
return '', ''
if not (callable(obj) or hasattr(obj, '__argspec_is_invalid_')): return
if not hasattr(obj, '__doc__'): return
doc = SphinxDocString(pydoc.getdoc(obj))
if doc['Signature']:
sig = re.sub(u"^[^(]*", u"", doc['Signature'])
return sig, u''
def setup(app, get_doc_object_=get_doc_object):
global get_doc_object
get_doc_object = get_doc_object_
app.connect('autodoc-process-docstring', mangle_docstrings)
app.connect('autodoc-process-signature', mangle_signature)
app.add_config_value('numpydoc_edit_link', None, False)
app.add_config_value('numpydoc_use_plots', None, False)
app.add_config_value('numpydoc_show_class_members', True, True)
# Extra mangling domains
app.add_domain(NumpyPythonDomain)
app.add_domain(NumpyCDomain)
#------------------------------------------------------------------------------
# Docstring-mangling domains
#------------------------------------------------------------------------------
from docutils.statemachine import ViewList
from sphinx.domains.c import CDomain
from sphinx.domains.python import PythonDomain
class ManglingDomainBase(object):
directive_mangling_map = {}
def __init__(self, *a, **kw):
super(ManglingDomainBase, self).__init__(*a, **kw)
self.wrap_mangling_directives()
def wrap_mangling_directives(self):
for name, objtype in self.directive_mangling_map.items():
self.directives[name] = wrap_mangling_directive(
self.directives[name], objtype)
class NumpyPythonDomain(ManglingDomainBase, PythonDomain):
name = 'np'
directive_mangling_map = {
'function': 'function',
'class': 'class',
'exception': 'class',
'method': 'function',
'classmethod': 'function',
'staticmethod': 'function',
'attribute': 'attribute',
}
class NumpyCDomain(ManglingDomainBase, CDomain):
name = 'np-c'
directive_mangling_map = {
'function': 'function',
'member': 'attribute',
'macro': 'function',
'type': 'class',
'var': 'object',
}
def wrap_mangling_directive(base_directive, objtype):
class directive(base_directive):
def run(self):
env = self.state.document.settings.env
name = None
if self.arguments:
m = re.match(r'^(.*\s+)?(.*?)(\(.*)?', self.arguments[0])
name = m.group(2).strip()
if not name:
name = self.arguments[0]
lines = list(self.content)
mangle_docstrings(env.app, objtype, name, None, None, lines)
self.content = ViewList(lines, self.content.parent)
return base_directive.run(self)
return directive

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