Videre

linedance-app/venv/lib/python3.12/site-packages/sklearn/externals/_numpydoc/docscrape.py

@@ -0,0 +1,759 @@
+"""Extract reference documentation from the NumPy source tree."""
+
+import copy
+import inspect
+import pydoc
+import re
+import sys
+import textwrap
+from collections import namedtuple
+from collections.abc import Callable, Mapping
+from functools import cached_property
+from warnings import warn
+
+
+def strip_blank_lines(l):
+    "Remove leading and trailing blank lines from a list of lines"
+    while l and not l[0].strip():
+        del l[0]
+    while l and not l[-1].strip():
+        del l[-1]
+    return l
+
+
+class Reader:
+    """A line-based string reader."""
+
+    def __init__(self, data):
+        """
+        Parameters
+        ----------
+        data : str
+           String with lines separated by '\\n'.
+
+        """
+        if isinstance(data, list):
+            self._str = data
+        else:
+            self._str = data.split("\n")  # store string as list of lines
+
+        self.reset()
+
+    def __getitem__(self, n):
+        return self._str[n]
+
+    def reset(self):
+        self._l = 0  # current line nr
+
+    def read(self):
+        if not self.eof():
+            out = self[self._l]
+            self._l += 1
+            return out
+        else:
+            return ""
+
+    def seek_next_non_empty_line(self):
+        for l in self[self._l :]:
+            if l.strip():
+                break
+            else:
+                self._l += 1
+
+    def eof(self):
+        return self._l >= len(self._str)
+
+    def read_to_condition(self, condition_func):
+        start = self._l
+        for line in self[start:]:
+            if condition_func(line):
+                return self[start : self._l]
+            self._l += 1
+            if self.eof():
+                return self[start : self._l + 1]
+        return []
+
+    def read_to_next_empty_line(self):
+        self.seek_next_non_empty_line()
+
+        def is_empty(line):
+            return not line.strip()
+
+        return self.read_to_condition(is_empty)
+
+    def read_to_next_unindented_line(self):
+        def is_unindented(line):
+            return line.strip() and (len(line.lstrip()) == len(line))
+
+        return self.read_to_condition(is_unindented)
+
+    def peek(self, n=0):
+        if self._l + n < len(self._str):
+            return self[self._l + n]
+        else:
+            return ""
+
+    def is_empty(self):
+        return not "".join(self._str).strip()
+
+
+class ParseError(Exception):
+    def __str__(self):
+        message = self.args[0]
+        if hasattr(self, "docstring"):
+            message = f"{message} in {self.docstring!r}"
+        return message
+
+
+Parameter = namedtuple("Parameter", ["name", "type", "desc"])
+
+
+class NumpyDocString(Mapping):
+    """Parses a numpydoc string to an abstract representation
+
+    Instances define a mapping from section title to structured data.
+
+    """
+
+    sections = {
+        "Signature": "",
+        "Summary": [""],
+        "Extended Summary": [],
+        "Parameters": [],
+        "Attributes": [],
+        "Methods": [],
+        "Returns": [],
+        "Yields": [],
+        "Receives": [],
+        "Other Parameters": [],
+        "Raises": [],
+        "Warns": [],
+        "Warnings": [],
+        "See Also": [],
+        "Notes": [],
+        "References": "",
+        "Examples": "",
+        "index": {},
+    }
+
+    def __init__(self, docstring, config=None):
+        orig_docstring = docstring
+        docstring = textwrap.dedent(docstring).split("\n")
+
+        self._doc = Reader(docstring)
+        self._parsed_data = copy.deepcopy(self.sections)
+
+        try:
+            self._parse()
+        except ParseError as e:
+            e.docstring = orig_docstring
+            raise
+
+    def __getitem__(self, key):
+        return self._parsed_data[key]
+
+    def __setitem__(self, key, val):
+        if key not in self._parsed_data:
+            self._error_location(f"Unknown section {key}", error=False)
+        else:
+            self._parsed_data[key] = val
+
+    def __iter__(self):
+        return iter(self._parsed_data)
+
+    def __len__(self):
+        return len(self._parsed_data)
+
+    def _is_at_section(self):
+        self._doc.seek_next_non_empty_line()
+
+        if self._doc.eof():
+            return False
+
+        l1 = self._doc.peek().strip()  # e.g. Parameters
+
+        if l1.startswith(".. index::"):
+            return True
+
+        l2 = self._doc.peek(1).strip()  # ---------- or ==========
+        if len(l2) >= 3 and (set(l2) in ({"-"}, {"="})) and len(l2) != len(l1):
+            snip = "\n".join(self._doc._str[:2]) + "..."
+            self._error_location(
+                f"potentially wrong underline length... \n{l1} \n{l2} in \n{snip}",
+                error=False,
+            )
+        return l2.startswith("-" * len(l1)) or l2.startswith("=" * len(l1))
+
+    def _strip(self, doc):
+        i = 0
+        j = 0
+        for i, line in enumerate(doc):
+            if line.strip():
+                break
+
+        for j, line in enumerate(doc[::-1]):
+            if line.strip():
+                break
+
+        return doc[i : len(doc) - j]
+
+    def _read_to_next_section(self):
+        section = self._doc.read_to_next_empty_line()
+
+        while not self._is_at_section() and not self._doc.eof():
+            if not self._doc.peek(-1).strip():  # previous line was empty
+                section += [""]
+
+            section += self._doc.read_to_next_empty_line()
+
+        return section
+
+    def _read_sections(self):
+        while not self._doc.eof():
+            data = self._read_to_next_section()
+            name = data[0].strip()
+
+            if name.startswith(".."):  # index section
+                yield name, data[1:]
+            elif len(data) < 2:
+                yield StopIteration
+            else:
+                yield name, self._strip(data[2:])
+
+    def _parse_param_list(self, content, single_element_is_type=False):
+        content = dedent_lines(content)
+        r = Reader(content)
+        params = []
+        while not r.eof():
+            header = r.read().strip()
+            if " : " in header:
+                arg_name, arg_type = header.split(" : ", maxsplit=1)
+            else:
+                # NOTE: param line with single element should never have a
+                # a " :" before the description line, so this should probably
+                # warn.
+                header = header.removesuffix(" :")
+                if single_element_is_type:
+                    arg_name, arg_type = "", header
+                else:
+                    arg_name, arg_type = header, ""
+
+            desc = r.read_to_next_unindented_line()
+            desc = dedent_lines(desc)
+            desc = strip_blank_lines(desc)
+
+            params.append(Parameter(arg_name, arg_type, desc))
+
+        return params
+
+    # See also supports the following formats.
+    #
+    # <FUNCNAME>
+    # <FUNCNAME> SPACE* COLON SPACE+ <DESC> SPACE*
+    # <FUNCNAME> ( COMMA SPACE+ <FUNCNAME>)+ (COMMA | PERIOD)? SPACE*
+    # <FUNCNAME> ( COMMA SPACE+ <FUNCNAME>)* SPACE* COLON SPACE+ <DESC> SPACE*
+
+    # <FUNCNAME> is one of
+    #   <PLAIN_FUNCNAME>
+    #   COLON <ROLE> COLON BACKTICK <PLAIN_FUNCNAME> BACKTICK
+    # where
+    #   <PLAIN_FUNCNAME> is a legal function name, and
+    #   <ROLE> is any nonempty sequence of word characters.
+    # Examples: func_f1  :meth:`func_h1` :obj:`~baz.obj_r` :class:`class_j`
+    # <DESC> is a string describing the function.
+
+    _role = r":(?P<role>(py:)?\w+):"
+    _funcbacktick = r"`(?P<name>(?:~\w+\.)?[a-zA-Z0-9_\.-]+)`"
+    _funcplain = r"(?P<name2>[a-zA-Z0-9_\.-]+)"
+    _funcname = r"(" + _role + _funcbacktick + r"|" + _funcplain + r")"
+    _funcnamenext = _funcname.replace("role", "rolenext")
+    _funcnamenext = _funcnamenext.replace("name", "namenext")
+    _description = r"(?P<description>\s*:(\s+(?P<desc>\S+.*))?)?\s*$"
+    _func_rgx = re.compile(r"^\s*" + _funcname + r"\s*")
+    _line_rgx = re.compile(
+        r"^\s*"
+        + r"(?P<allfuncs>"
+        + _funcname  # group for all function names
+        + r"(?P<morefuncs>([,]\s+"
+        + _funcnamenext
+        + r")*)"
+        + r")"
+        + r"(?P<trailing>[,\.])?"  # end of "allfuncs"
+        + _description  # Some function lists have a trailing comma (or period)  '\s*'
+    )
+
+    # Empty <DESC> elements are replaced with '..'
+    empty_description = ".."
+
+    def _parse_see_also(self, content):
+        """
+        func_name : Descriptive text
+            continued text
+        another_func_name : Descriptive text
+        func_name1, func_name2, :meth:`func_name`, func_name3
+
+        """
+
+        content = dedent_lines(content)
+
+        items = []
+
+        def parse_item_name(text):
+            """Match ':role:`name`' or 'name'."""
+            m = self._func_rgx.match(text)
+            if not m:
+                self._error_location(f"Error parsing See Also entry {line!r}")
+            role = m.group("role")
+            name = m.group("name") if role else m.group("name2")
+            return name, role, m.end()
+
+        rest = []
+        for line in content:
+            if not line.strip():
+                continue
+
+            line_match = self._line_rgx.match(line)
+            description = None
+            if line_match:
+                description = line_match.group("desc")
+                if line_match.group("trailing") and description:
+                    self._error_location(
+                        "Unexpected comma or period after function list at index %d of "
+                        'line "%s"' % (line_match.end("trailing"), line),
+                        error=False,
+                    )
+            if not description and line.startswith(" "):
+                rest.append(line.strip())
+            elif line_match:
+                funcs = []
+                text = line_match.group("allfuncs")
+                while True:
+                    if not text.strip():
+                        break
+                    name, role, match_end = parse_item_name(text)
+                    funcs.append((name, role))
+                    text = text[match_end:].strip()
+                    if text and text[0] == ",":
+                        text = text[1:].strip()
+                rest = list(filter(None, [description]))
+                items.append((funcs, rest))
+            else:
+                self._error_location(f"Error parsing See Also entry {line!r}")
+        return items
+
+    def _parse_index(self, section, content):
+        """
+        .. index:: default
+           :refguide: something, else, and more
+
+        """
+
+        def strip_each_in(lst):
+            return [s.strip() for s in lst]
+
+        out = {}
+        section = section.split("::")
+        if len(section) > 1:
+            out["default"] = strip_each_in(section[1].split(","))[0]
+        for line in content:
+            line = line.split(":")
+            if len(line) > 2:
+                out[line[1]] = strip_each_in(line[2].split(","))
+        return out
+
+    def _parse_summary(self):
+        """Grab signature (if given) and summary"""
+        if self._is_at_section():
+            return
+
+        # If several signatures present, take the last one
+        while True:
+            summary = self._doc.read_to_next_empty_line()
+            summary_str = " ".join([s.strip() for s in summary]).strip()
+            compiled = re.compile(r"^([\w., ]+=)?\s*[\w\.]+\(.*\)$")
+            if compiled.match(summary_str):
+                self["Signature"] = summary_str
+                if not self._is_at_section():
+                    continue
+            break
+
+        if summary is not None:
+            self["Summary"] = summary
+
+        if not self._is_at_section():
+            self["Extended Summary"] = self._read_to_next_section()
+
+    def _parse(self):
+        self._doc.reset()
+        self._parse_summary()
+
+        sections = list(self._read_sections())
+        section_names = {section for section, content in sections}
+
+        has_yields = "Yields" in section_names
+        # We could do more tests, but we are not. Arbitrarily.
+        if not has_yields and "Receives" in section_names:
+            msg = "Docstring contains a Receives section but not Yields."
+            raise ValueError(msg)
+
+        for section, content in sections:
+            if not section.startswith(".."):
+                section = (s.capitalize() for s in section.split(" "))
+                section = " ".join(section)
+                if self.get(section):
+                    self._error_location(
+                        "The section %s appears twice in  %s"
+                        % (section, "\n".join(self._doc._str))
+                    )
+
+            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
+
+    @property
+    def _obj(self):
+        if hasattr(self, "_cls"):
+            return self._cls
+        elif hasattr(self, "_f"):
+            return self._f
+        return None
+
+    def _error_location(self, msg, error=True):
+        if self._obj is not None:
+            # we know where the docs came from:
+            try:
+                filename = inspect.getsourcefile(self._obj)
+            except TypeError:
+                filename = None
+            # Make UserWarning more descriptive via object introspection.
+            # Skip if introspection fails
+            name = getattr(self._obj, "__name__", None)
+            if name is None:
+                name = getattr(getattr(self._obj, "__class__", None), "__name__", None)
+            if name is not None:
+                msg += f" in the docstring of {name}"
+            msg += f" in {filename}." if filename else ""
+        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):
+        return [" " * indent + line for line in doc]
+
+    def _str_signature(self):
+        if self["Signature"]:
+            return [self["Signature"].replace("*", r"\*")] + [""]
+        return [""]
+
+    def _str_summary(self):
+        if self["Summary"]:
+            return self["Summary"] + [""]
+        return []
+
+    def _str_extended_summary(self):
+        if self["Extended Summary"]:
+            return self["Extended Summary"] + [""]
+        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 = f"`{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 += [f".. index:: {default_index}"]
+        for section, references in idx.items():
+            if section == "default":
+                continue
+            output_index = True
+            out += [f"   :{section}: {', '.join(references)}"]
+        if output_index:
+            return out
+        return ""
+
+    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)