761 lines
23 KiB
Python
761 lines
23 KiB
Python
# copied from numpydoc/docscrape.py, commit 97a6026508e0dd5382865672e9563a72cc113bd2
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"""Extract reference documentation from the NumPy source tree."""
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import copy
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import inspect
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import pydoc
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import re
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import sys
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import textwrap
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from collections import namedtuple
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from collections.abc import Callable, Mapping
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from functools import cached_property
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from warnings import warn
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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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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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"Attributes": [],
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"Methods": [],
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"Returns": [],
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"Yields": [],
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"Receives": [],
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"Other Parameters": [],
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"Raises": [],
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"Warns": [],
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"Warnings": [],
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"See Also": [],
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"Notes": [],
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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=None):
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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(f"Unknown section {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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if len(l2) >= 3 and (set(l2) in ({"-"}, {"="})) and len(l2) != len(l1):
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snip = "\n".join(self._doc._str[:2]) + "..."
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self._error_location(
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f"potentially wrong underline length... \n{l1} \n{l2} in \n{snip}",
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error=False,
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)
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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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content = dedent_lines(content)
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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(" : ", maxsplit=1)
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else:
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# NOTE: param line with single element should never have a
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# a " :" before the description line, so this should probably
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# warn.
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if header.endswith(" :"):
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header = header[:-2]
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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>(py:)?\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>"
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+ _funcname # group for all function names
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+ r"(?P<morefuncs>([,]\s+"
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+ _funcnamenext
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+ r")*)"
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+ r")"
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+ r"(?P<trailing>[,\.])?" # end of "allfuncs"
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+ _description # Some function lists have a trailing comma (or period) '\s*'
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)
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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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content = dedent_lines(content)
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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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self._error_location(f"Error parsing See Also entry {line!r}")
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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 index %d of "
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'line "%s"' % (line_match.end("trailing"), line),
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error=False,
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)
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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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self._error_location(f"Error parsing See Also entry {line!r}")
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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_yields = "Yields" in section_names
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# We could do more tests, but we are not. Arbitrarily.
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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(
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"The section %s appears twice in %s"
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% (section, "\n".join(self._doc._str))
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)
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if section in ("Parameters", "Other Parameters", "Attributes", "Methods"):
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self[section] = self._parse_param_list(content)
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elif section in ("Returns", "Yields", "Raises", "Warns", "Receives"):
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self[section] = self._parse_param_list(
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content, single_element_is_type=True
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)
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elif section.startswith(".. index::"):
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self["index"] = self._parse_index(section, content)
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elif section == "See Also":
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self["See Also"] = self._parse_see_also(content)
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else:
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self[section] = content
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@property
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def _obj(self):
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if hasattr(self, "_cls"):
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return self._cls
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elif hasattr(self, "_f"):
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return self._f
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return None
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def _error_location(self, msg, error=True):
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if self._obj is not None:
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# we know where the docs came from:
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try:
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filename = inspect.getsourcefile(self._obj)
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except TypeError:
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filename = None
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# Make UserWarning more descriptive via object introspection.
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# Skip if introspection fails
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name = getattr(self._obj, "__name__", None)
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if name is None:
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name = getattr(getattr(self._obj, "__class__", None), "__name__", None)
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if name is not None:
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msg += f" in the docstring of {name}"
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msg += f" in {filename}." if filename else ""
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if error:
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raise ValueError(msg)
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else:
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warn(msg, stacklevel=3)
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# string conversion routines
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def _str_header(self, name, symbol="-"):
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return [name, len(name) * symbol]
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def _str_indent(self, doc, indent=4):
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return [" " * indent + line for line in doc]
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def _str_signature(self):
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if self["Signature"]:
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return [self["Signature"].replace("*", r"\*")] + [""]
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return [""]
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def _str_summary(self):
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if self["Summary"]:
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return self["Summary"] + [""]
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return []
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def _str_extended_summary(self):
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if self["Extended Summary"]:
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return self["Extended Summary"] + [""]
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return []
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def _str_param_list(self, name):
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out = []
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if self[name]:
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out += self._str_header(name)
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for param in self[name]:
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parts = []
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if param.name:
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parts.append(param.name)
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if param.type:
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parts.append(param.type)
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out += [" : ".join(parts)]
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if param.desc and "".join(param.desc).strip():
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out += self._str_indent(param.desc)
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out += [""]
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return out
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def _str_section(self, name):
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out = []
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if self[name]:
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out += self._str_header(name)
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out += self[name]
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out += [""]
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return out
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def _str_see_also(self, func_role):
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if not self["See Also"]:
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return []
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out = []
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out += self._str_header("See Also")
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out += [""]
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last_had_desc = True
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for funcs, desc in self["See Also"]:
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assert isinstance(funcs, list)
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links = []
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for func, role in funcs:
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if role:
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link = f":{role}:`{func}`"
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elif func_role:
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link = f":{func_role}:`{func}`"
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else:
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link = f"`{func}`_"
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links.append(link)
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link = ", ".join(links)
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out += [link]
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if desc:
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out += self._str_indent([" ".join(desc)])
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last_had_desc = True
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else:
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last_had_desc = False
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out += self._str_indent([self.empty_description])
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if last_had_desc:
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out += [""]
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out += [""]
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return out
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def _str_index(self):
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idx = self["index"]
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out = []
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output_index = False
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default_index = idx.get("default", "")
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if default_index:
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output_index = True
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out += [f".. index:: {default_index}"]
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for section, references in idx.items():
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if section == "default":
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continue
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output_index = True
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out += [f" :{section}: {', '.join(references)}"]
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if output_index:
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return out
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return ""
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def __str__(self, func_role=""):
|
|
out = []
|
|
out += self._str_signature()
|
|
out += self._str_summary()
|
|
out += self._str_extended_summary()
|
|
out += self._str_param_list("Parameters")
|
|
for param_list in ("Attributes", "Methods"):
|
|
out += self._str_param_list(param_list)
|
|
for param_list in (
|
|
"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)
|
|
out += self._str_index()
|
|
return "\n".join(out)
|
|
|
|
|
|
def dedent_lines(lines):
|
|
"""Deindent a list of lines maximally"""
|
|
return textwrap.dedent("\n".join(lines)).split("\n")
|
|
|
|
|
|
class FunctionDoc(NumpyDocString):
|
|
def __init__(self, func, role="func", doc=None, config=None):
|
|
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 ""
|
|
if config is None:
|
|
config = {}
|
|
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(f"Warning: invalid role {self._role}")
|
|
out += f".. {roles.get(self._role, '')}:: {func_name}\n \n\n"
|
|
|
|
out += super().__str__(func_role=self._role)
|
|
return out
|
|
|
|
|
|
class ObjDoc(NumpyDocString):
|
|
def __init__(self, obj, doc=None, config=None):
|
|
self._f = obj
|
|
if config is None:
|
|
config = {}
|
|
NumpyDocString.__init__(self, doc, config=config)
|
|
|
|
|
|
class ClassDoc(NumpyDocString):
|
|
extra_public_methods = ["__call__"]
|
|
|
|
def __init__(self, cls, doc=None, modulename="", func_doc=FunctionDoc, config=None):
|
|
if not inspect.isclass(cls) and cls is not None:
|
|
raise ValueError(f"Expected a class or None, but got {cls!r}")
|
|
self._cls = cls
|
|
|
|
if "sphinx" in sys.modules:
|
|
from sphinx.ext.autodoc import ALL
|
|
else:
|
|
ALL = object()
|
|
|
|
if config is None:
|
|
config = {}
|
|
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 not self._should_skip_member(name, self._cls)
|
|
and (
|
|
func is None
|
|
or isinstance(func, (property, cached_property))
|
|
or inspect.isdatadescriptor(func)
|
|
)
|
|
and self._is_show_member(name)
|
|
)
|
|
]
|
|
|
|
@staticmethod
|
|
def _should_skip_member(name, klass):
|
|
return (
|
|
# Namedtuples should skip everything in their ._fields as the
|
|
# docstrings for each of the members is: "Alias for field number X"
|
|
issubclass(klass, tuple)
|
|
and hasattr(klass, "_asdict")
|
|
and hasattr(klass, "_fields")
|
|
and name in klass._fields
|
|
)
|
|
|
|
def _is_show_member(self, name):
|
|
return (
|
|
# show all class members
|
|
self.show_inherited_members
|
|
# or class member is not inherited
|
|
or name in self._cls.__dict__
|
|
)
|
|
|
|
|
|
def get_doc_object(
|
|
obj,
|
|
what=None,
|
|
doc=None,
|
|
config=None,
|
|
class_doc=ClassDoc,
|
|
func_doc=FunctionDoc,
|
|
obj_doc=ObjDoc,
|
|
):
|
|
if what is None:
|
|
if inspect.isclass(obj):
|
|
what = "class"
|
|
elif inspect.ismodule(obj):
|
|
what = "module"
|
|
elif isinstance(obj, Callable):
|
|
what = "function"
|
|
else:
|
|
what = "object"
|
|
if config is None:
|
|
config = {}
|
|
|
|
if what == "class":
|
|
return class_doc(obj, func_doc=func_doc, doc=doc, config=config)
|
|
elif what in ("function", "method"):
|
|
return func_doc(obj, doc=doc, config=config)
|
|
else:
|
|
if doc is None:
|
|
doc = pydoc.getdoc(obj)
|
|
return obj_doc(obj, doc, config=config) |