680 lines
21 KiB
Python
680 lines
21 KiB
Python
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"""Extract reference documentation from the NumPy source tree.
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"""
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# copied from numpydoc/docscrape.py
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import inspect
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import textwrap
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import re
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import pydoc
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from warnings import warn
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from collections import namedtuple
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from collections.abc import Callable, Mapping
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import copy
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import sys
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def strip_blank_lines(l):
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"Remove leading and trailing blank lines from a list of lines"
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while l and not l[0].strip():
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del l[0]
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while l and not l[-1].strip():
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del l[-1]
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return l
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class Reader:
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"""A line-based string reader.
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"""
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def __init__(self, data):
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"""
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Parameters
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----------
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data : str
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String with lines separated by '\\n'.
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"""
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if isinstance(data, list):
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self._str = data
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else:
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self._str = data.split('\n') # store string as list of lines
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self.reset()
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def __getitem__(self, n):
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return self._str[n]
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def reset(self):
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self._l = 0 # current line nr
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def read(self):
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if not self.eof():
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out = self[self._l]
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self._l += 1
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return out
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else:
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return ''
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def seek_next_non_empty_line(self):
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for l in self[self._l:]:
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if l.strip():
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break
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else:
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self._l += 1
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def eof(self):
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return self._l >= len(self._str)
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def read_to_condition(self, condition_func):
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start = self._l
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for line in self[start:]:
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if condition_func(line):
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return self[start:self._l]
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self._l += 1
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if self.eof():
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return self[start:self._l+1]
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return []
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def read_to_next_empty_line(self):
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self.seek_next_non_empty_line()
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def is_empty(line):
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return not line.strip()
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return self.read_to_condition(is_empty)
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def read_to_next_unindented_line(self):
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def is_unindented(line):
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return (line.strip() and (len(line.lstrip()) == len(line)))
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return self.read_to_condition(is_unindented)
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def peek(self, n=0):
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if self._l + n < len(self._str):
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return self[self._l + n]
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else:
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return ''
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def is_empty(self):
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return not ''.join(self._str).strip()
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class ParseError(Exception):
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def __str__(self):
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message = self.args[0]
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if hasattr(self, 'docstring'):
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message = f"{message} in {self.docstring!r}"
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return message
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Parameter = namedtuple('Parameter', ['name', 'type', 'desc'])
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class NumpyDocString(Mapping):
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"""Parses a numpydoc string to an abstract representation
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Instances define a mapping from section title to structured data.
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"""
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sections = {
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'Signature': '',
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'Summary': [''],
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'Extended Summary': [],
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'Parameters': [],
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'Returns': [],
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'Yields': [],
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'Receives': [],
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'Raises': [],
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'Warns': [],
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'Other Parameters': [],
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'Attributes': [],
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'Methods': [],
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'See Also': [],
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'Notes': [],
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'Warnings': [],
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'References': '',
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'Examples': '',
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'index': {}
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}
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def __init__(self, docstring, config={}):
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orig_docstring = docstring
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docstring = textwrap.dedent(docstring).split('\n')
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self._doc = Reader(docstring)
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self._parsed_data = copy.deepcopy(self.sections)
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try:
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self._parse()
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except ParseError as e:
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e.docstring = orig_docstring
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raise
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def __getitem__(self, key):
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return self._parsed_data[key]
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def __setitem__(self, key, val):
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if key not in self._parsed_data:
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self._error_location("Unknown section %s" % key, error=False)
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else:
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self._parsed_data[key] = val
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def __iter__(self):
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return iter(self._parsed_data)
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def __len__(self):
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return len(self._parsed_data)
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def _is_at_section(self):
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self._doc.seek_next_non_empty_line()
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if self._doc.eof():
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return False
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l1 = self._doc.peek().strip() # e.g. Parameters
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if l1.startswith('.. index::'):
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return True
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l2 = self._doc.peek(1).strip() # ---------- or ==========
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return l2.startswith('-'*len(l1)) or l2.startswith('='*len(l1))
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def _strip(self, doc):
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i = 0
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j = 0
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for i, line in enumerate(doc):
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if line.strip():
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break
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for j, line in enumerate(doc[::-1]):
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if line.strip():
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break
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return doc[i:len(doc)-j]
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def _read_to_next_section(self):
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section = self._doc.read_to_next_empty_line()
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while not self._is_at_section() and not self._doc.eof():
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if not self._doc.peek(-1).strip(): # previous line was empty
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section += ['']
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section += self._doc.read_to_next_empty_line()
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return section
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def _read_sections(self):
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while not self._doc.eof():
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data = self._read_to_next_section()
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name = data[0].strip()
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if name.startswith('..'): # index section
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yield name, data[1:]
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elif len(data) < 2:
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yield StopIteration
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else:
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yield name, self._strip(data[2:])
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def _parse_param_list(self, content, single_element_is_type=False):
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r = Reader(content)
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params = []
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while not r.eof():
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header = r.read().strip()
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if ' : ' in header:
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arg_name, arg_type = header.split(' : ')[:2]
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else:
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if single_element_is_type:
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arg_name, arg_type = '', header
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else:
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arg_name, arg_type = header, ''
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desc = r.read_to_next_unindented_line()
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desc = dedent_lines(desc)
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desc = strip_blank_lines(desc)
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params.append(Parameter(arg_name, arg_type, desc))
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return params
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# See also supports the following formats.
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#
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# <FUNCNAME>
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# <FUNCNAME> SPACE* COLON SPACE+ <DESC> SPACE*
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# <FUNCNAME> ( COMMA SPACE+ <FUNCNAME>)+ (COMMA | PERIOD)? SPACE*
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# <FUNCNAME> ( COMMA SPACE+ <FUNCNAME>)* SPACE* COLON SPACE+ <DESC> SPACE*
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# <FUNCNAME> is one of
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# <PLAIN_FUNCNAME>
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# COLON <ROLE> COLON BACKTICK <PLAIN_FUNCNAME> BACKTICK
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# where
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# <PLAIN_FUNCNAME> is a legal function name, and
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# <ROLE> is any nonempty sequence of word characters.
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# Examples: func_f1 :meth:`func_h1` :obj:`~baz.obj_r` :class:`class_j`
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# <DESC> is a string describing the function.
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_role = r":(?P<role>\w+):"
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_funcbacktick = r"`(?P<name>(?:~\w+\.)?[a-zA-Z0-9_\.-]+)`"
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_funcplain = r"(?P<name2>[a-zA-Z0-9_\.-]+)"
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_funcname = r"(" + _role + _funcbacktick + r"|" + _funcplain + r")"
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_funcnamenext = _funcname.replace('role', 'rolenext')
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_funcnamenext = _funcnamenext.replace('name', 'namenext')
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_description = r"(?P<description>\s*:(\s+(?P<desc>\S+.*))?)?\s*$"
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_func_rgx = re.compile(r"^\s*" + _funcname + r"\s*")
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_line_rgx = re.compile(
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r"^\s*" +
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r"(?P<allfuncs>" + # group for all function names
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_funcname +
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r"(?P<morefuncs>([,]\s+" + _funcnamenext + r")*)" +
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r")" + # end of "allfuncs"
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# Some function lists have a trailing comma (or period) '\s*'
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r"(?P<trailing>[,\.])?" +
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_description)
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# Empty <DESC> elements are replaced with '..'
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empty_description = '..'
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def _parse_see_also(self, content):
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"""
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func_name : Descriptive text
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continued text
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another_func_name : Descriptive text
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func_name1, func_name2, :meth:`func_name`, func_name3
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"""
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items = []
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def parse_item_name(text):
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"""Match ':role:`name`' or 'name'."""
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m = self._func_rgx.match(text)
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if not m:
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raise ParseError("%s is not a item name" % text)
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role = m.group('role')
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name = m.group('name') if role else m.group('name2')
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return name, role, m.end()
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rest = []
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for line in content:
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if not line.strip():
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continue
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line_match = self._line_rgx.match(line)
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description = None
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if line_match:
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description = line_match.group('desc')
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if line_match.group('trailing') and description:
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self._error_location(
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'Unexpected comma or period after function list at '
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'index %d of line "%s"' % (line_match.end('trailing'),
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line),
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error=False)
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if not description and line.startswith(' '):
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rest.append(line.strip())
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elif line_match:
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funcs = []
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text = line_match.group('allfuncs')
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while True:
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if not text.strip():
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break
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name, role, match_end = parse_item_name(text)
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funcs.append((name, role))
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text = text[match_end:].strip()
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if text and text[0] == ',':
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text = text[1:].strip()
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rest = list(filter(None, [description]))
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items.append((funcs, rest))
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else:
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raise ParseError("%s is not a item name" % line)
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return items
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def _parse_index(self, section, content):
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"""
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.. index:: default
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:refguide: something, else, and more
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"""
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def strip_each_in(lst):
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return [s.strip() for s in lst]
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out = {}
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section = section.split('::')
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if len(section) > 1:
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out['default'] = strip_each_in(section[1].split(','))[0]
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for line in content:
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line = line.split(':')
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if len(line) > 2:
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out[line[1]] = strip_each_in(line[2].split(','))
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return out
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def _parse_summary(self):
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"""Grab signature (if given) and summary"""
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if self._is_at_section():
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return
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# If several signatures present, take the last one
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while True:
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summary = self._doc.read_to_next_empty_line()
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summary_str = " ".join([s.strip() for s in summary]).strip()
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compiled = re.compile(r'^([\w., ]+=)?\s*[\w\.]+\(.*\)$')
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if compiled.match(summary_str):
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self['Signature'] = summary_str
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if not self._is_at_section():
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continue
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break
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if summary is not None:
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self['Summary'] = summary
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if not self._is_at_section():
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self['Extended Summary'] = self._read_to_next_section()
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def _parse(self):
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self._doc.reset()
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self._parse_summary()
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sections = list(self._read_sections())
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section_names = {section for section, content in sections}
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has_returns = 'Returns' in section_names
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has_yields = 'Yields' in section_names
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# We could do more tests, but we are not. Arbitrarily.
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if has_returns and has_yields:
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msg = 'Docstring contains both a Returns and Yields section.'
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raise ValueError(msg)
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if not has_yields and 'Receives' in section_names:
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msg = 'Docstring contains a Receives section but not Yields.'
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raise ValueError(msg)
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for (section, content) in sections:
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if not section.startswith('..'):
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section = (s.capitalize() for s in section.split(' '))
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section = ' '.join(section)
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if self.get(section):
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|
|
self._error_location("The section %s appears twice"
|
||
|
|
% section)
|
||
|
|
|
||
|
|
if section in ('Parameters', 'Other Parameters', 'Attributes',
|
||
|
|
'Methods'):
|
||
|
|
self[section] = self._parse_param_list(content)
|
||
|
|
elif section in ('Returns', 'Yields', 'Raises', 'Warns',
|
||
|
|
'Receives'):
|
||
|
|
self[section] = self._parse_param_list(
|
||
|
|
content, single_element_is_type=True)
|
||
|
|
elif section.startswith('.. index::'):
|
||
|
|
self['index'] = self._parse_index(section, content)
|
||
|
|
elif section == 'See Also':
|
||
|
|
self['See Also'] = self._parse_see_also(content)
|
||
|
|
else:
|
||
|
|
self[section] = content
|
||
|
|
|
||
|
|
def _error_location(self, msg, error=True):
|
||
|
|
if hasattr(self, '_obj'):
|
||
|
|
# we know where the docs came from:
|
||
|
|
try:
|
||
|
|
filename = inspect.getsourcefile(self._obj)
|
||
|
|
except TypeError:
|
||
|
|
filename = None
|
||
|
|
msg = msg + (f" in the docstring of {self._obj} in {filename}.")
|
||
|
|
if error:
|
||
|
|
raise ValueError(msg)
|
||
|
|
else:
|
||
|
|
warn(msg, stacklevel=3)
|
||
|
|
|
||
|
|
# string conversion routines
|
||
|
|
|
||
|
|
def _str_header(self, name, symbol='-'):
|
||
|
|
return [name, len(name)*symbol]
|
||
|
|
|
||
|
|
def _str_indent(self, doc, indent=4):
|
||
|
|
out = []
|
||
|
|
for line in doc:
|
||
|
|
out += [' '*indent + line]
|
||
|
|
return out
|
||
|
|
|
||
|
|
def _str_signature(self):
|
||
|
|
if self['Signature']:
|
||
|
|
return [self['Signature'].replace('*', r'\*')] + ['']
|
||
|
|
else:
|
||
|
|
return ['']
|
||
|
|
|
||
|
|
def _str_summary(self):
|
||
|
|
if self['Summary']:
|
||
|
|
return self['Summary'] + ['']
|
||
|
|
else:
|
||
|
|
return []
|
||
|
|
|
||
|
|
def _str_extended_summary(self):
|
||
|
|
if self['Extended Summary']:
|
||
|
|
return self['Extended Summary'] + ['']
|
||
|
|
else:
|
||
|
|
return []
|
||
|
|
|
||
|
|
def _str_param_list(self, name):
|
||
|
|
out = []
|
||
|
|
if self[name]:
|
||
|
|
out += self._str_header(name)
|
||
|
|
for param in self[name]:
|
||
|
|
parts = []
|
||
|
|
if param.name:
|
||
|
|
parts.append(param.name)
|
||
|
|
if param.type:
|
||
|
|
parts.append(param.type)
|
||
|
|
out += [' : '.join(parts)]
|
||
|
|
if param.desc and ''.join(param.desc).strip():
|
||
|
|
out += self._str_indent(param.desc)
|
||
|
|
out += ['']
|
||
|
|
return out
|
||
|
|
|
||
|
|
def _str_section(self, name):
|
||
|
|
out = []
|
||
|
|
if self[name]:
|
||
|
|
out += self._str_header(name)
|
||
|
|
out += self[name]
|
||
|
|
out += ['']
|
||
|
|
return out
|
||
|
|
|
||
|
|
def _str_see_also(self, func_role):
|
||
|
|
if not self['See Also']:
|
||
|
|
return []
|
||
|
|
out = []
|
||
|
|
out += self._str_header("See Also")
|
||
|
|
out += ['']
|
||
|
|
last_had_desc = True
|
||
|
|
for funcs, desc in self['See Also']:
|
||
|
|
assert isinstance(funcs, list)
|
||
|
|
links = []
|
||
|
|
for func, role in funcs:
|
||
|
|
if role:
|
||
|
|
link = f':{role}:`{func}`'
|
||
|
|
elif func_role:
|
||
|
|
link = f':{func_role}:`{func}`'
|
||
|
|
else:
|
||
|
|
link = "`%s`_" % func
|
||
|
|
links.append(link)
|
||
|
|
link = ', '.join(links)
|
||
|
|
out += [link]
|
||
|
|
if desc:
|
||
|
|
out += self._str_indent([' '.join(desc)])
|
||
|
|
last_had_desc = True
|
||
|
|
else:
|
||
|
|
last_had_desc = False
|
||
|
|
out += self._str_indent([self.empty_description])
|
||
|
|
|
||
|
|
if last_had_desc:
|
||
|
|
out += ['']
|
||
|
|
out += ['']
|
||
|
|
return out
|
||
|
|
|
||
|
|
def _str_index(self):
|
||
|
|
idx = self['index']
|
||
|
|
out = []
|
||
|
|
output_index = False
|
||
|
|
default_index = idx.get('default', '')
|
||
|
|
if default_index:
|
||
|
|
output_index = True
|
||
|
|
out += ['.. index:: %s' % default_index]
|
||
|
|
for section, references in idx.items():
|
||
|
|
if section == 'default':
|
||
|
|
continue
|
||
|
|
output_index = True
|
||
|
|
out += [' :{}: {}'.format(section, ', '.join(references))]
|
||
|
|
if output_index:
|
||
|
|
return out
|
||
|
|
else:
|
||
|
|
return ''
|
||
|
|
|
||
|
|
def __str__(self, func_role=''):
|
||
|
|
out = []
|
||
|
|
out += self._str_signature()
|
||
|
|
out += self._str_summary()
|
||
|
|
out += self._str_extended_summary()
|
||
|
|
for param_list in ('Parameters', 'Returns', 'Yields', 'Receives',
|
||
|
|
'Other Parameters', 'Raises', 'Warns'):
|
||
|
|
out += self._str_param_list(param_list)
|
||
|
|
out += self._str_section('Warnings')
|
||
|
|
out += self._str_see_also(func_role)
|
||
|
|
for s in ('Notes', 'References', 'Examples'):
|
||
|
|
out += self._str_section(s)
|
||
|
|
for param_list in ('Attributes', 'Methods'):
|
||
|
|
out += self._str_param_list(param_list)
|
||
|
|
out += self._str_index()
|
||
|
|
return '\n'.join(out)
|
||
|
|
|
||
|
|
|
||
|
|
def indent(str, indent=4):
|
||
|
|
indent_str = ' '*indent
|
||
|
|
if str is None:
|
||
|
|
return indent_str
|
||
|
|
lines = str.split('\n')
|
||
|
|
return '\n'.join(indent_str + l for l in lines)
|
||
|
|
|
||
|
|
|
||
|
|
def dedent_lines(lines):
|
||
|
|
"""Deindent a list of lines maximally"""
|
||
|
|
return textwrap.dedent("\n".join(lines)).split("\n")
|
||
|
|
|
||
|
|
|
||
|
|
def header(text, style='-'):
|
||
|
|
return text + '\n' + style*len(text) + '\n'
|
||
|
|
|
||
|
|
|
||
|
|
class FunctionDoc(NumpyDocString):
|
||
|
|
def __init__(self, func, role='func', doc=None, config={}):
|
||
|
|
self._f = func
|
||
|
|
self._role = role # e.g. "func" or "meth"
|
||
|
|
|
||
|
|
if doc is None:
|
||
|
|
if func is None:
|
||
|
|
raise ValueError("No function or docstring given")
|
||
|
|
doc = inspect.getdoc(func) or ''
|
||
|
|
NumpyDocString.__init__(self, doc, config)
|
||
|
|
|
||
|
|
def get_func(self):
|
||
|
|
func_name = getattr(self._f, '__name__', self.__class__.__name__)
|
||
|
|
if inspect.isclass(self._f):
|
||
|
|
func = getattr(self._f, '__call__', self._f.__init__)
|
||
|
|
else:
|
||
|
|
func = self._f
|
||
|
|
return func, func_name
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
out = ''
|
||
|
|
|
||
|
|
func, func_name = self.get_func()
|
||
|
|
|
||
|
|
roles = {'func': 'function',
|
||
|
|
'meth': 'method'}
|
||
|
|
|
||
|
|
if self._role:
|
||
|
|
if self._role not in roles:
|
||
|
|
print("Warning: invalid role %s" % self._role)
|
||
|
|
out += '.. {}:: {}\n \n\n'.format(roles.get(self._role, ''),
|
||
|
|
func_name)
|
||
|
|
|
||
|
|
out += super().__str__(func_role=self._role)
|
||
|
|
return out
|
||
|
|
|
||
|
|
|
||
|
|
class ClassDoc(NumpyDocString):
|
||
|
|
|
||
|
|
extra_public_methods = ['__call__']
|
||
|
|
|
||
|
|
def __init__(self, cls, doc=None, modulename='', func_doc=FunctionDoc,
|
||
|
|
config={}):
|
||
|
|
if not inspect.isclass(cls) and cls is not None:
|
||
|
|
raise ValueError("Expected a class or None, but got %r" % cls)
|
||
|
|
self._cls = cls
|
||
|
|
|
||
|
|
if 'sphinx' in sys.modules:
|
||
|
|
from sphinx.ext.autodoc import ALL
|
||
|
|
else:
|
||
|
|
ALL = object()
|
||
|
|
|
||
|
|
self.show_inherited_members = config.get(
|
||
|
|
'show_inherited_class_members', True)
|
||
|
|
|
||
|
|
if modulename and not modulename.endswith('.'):
|
||
|
|
modulename += '.'
|
||
|
|
self._mod = modulename
|
||
|
|
|
||
|
|
if doc is None:
|
||
|
|
if cls is None:
|
||
|
|
raise ValueError("No class or documentation string given")
|
||
|
|
doc = pydoc.getdoc(cls)
|
||
|
|
|
||
|
|
NumpyDocString.__init__(self, doc)
|
||
|
|
|
||
|
|
_members = config.get('members', [])
|
||
|
|
if _members is ALL:
|
||
|
|
_members = None
|
||
|
|
_exclude = config.get('exclude-members', [])
|
||
|
|
|
||
|
|
if config.get('show_class_members', True) and _exclude is not ALL:
|
||
|
|
def splitlines_x(s):
|
||
|
|
if not s:
|
||
|
|
return []
|
||
|
|
else:
|
||
|
|
return s.splitlines()
|
||
|
|
for field, items in [('Methods', self.methods),
|
||
|
|
('Attributes', self.properties)]:
|
||
|
|
if not self[field]:
|
||
|
|
doc_list = []
|
||
|
|
for name in sorted(items):
|
||
|
|
if (name in _exclude or
|
||
|
|
(_members and name not in _members)):
|
||
|
|
continue
|
||
|
|
try:
|
||
|
|
doc_item = pydoc.getdoc(getattr(self._cls, name))
|
||
|
|
doc_list.append(
|
||
|
|
Parameter(name, '', splitlines_x(doc_item)))
|
||
|
|
except AttributeError:
|
||
|
|
pass # method doesn't exist
|
||
|
|
self[field] = doc_list
|
||
|
|
|
||
|
|
@property
|
||
|
|
def methods(self):
|
||
|
|
if self._cls is None:
|
||
|
|
return []
|
||
|
|
return [name for name, func in inspect.getmembers(self._cls)
|
||
|
|
if ((not name.startswith('_')
|
||
|
|
or name in self.extra_public_methods)
|
||
|
|
and isinstance(func, Callable)
|
||
|
|
and self._is_show_member(name))]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def properties(self):
|
||
|
|
if self._cls is None:
|
||
|
|
return []
|
||
|
|
return [name for name, func in inspect.getmembers(self._cls)
|
||
|
|
if (not name.startswith('_') and
|
||
|
|
(func is None or isinstance(func, property) or
|
||
|
|
inspect.isdatadescriptor(func))
|
||
|
|
and self._is_show_member(name))]
|
||
|
|
|
||
|
|
def _is_show_member(self, name):
|
||
|
|
if self.show_inherited_members:
|
||
|
|
return True # show all class members
|
||
|
|
if name not in self._cls.__dict__:
|
||
|
|
return False # class member is inherited, we do not show it
|
||
|
|
return True
|