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epydoc2stan.py
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epydoc2stan.py
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"""
Convert L{pydoctor.epydoc} parsed markup into renderable content.
"""
from collections import defaultdict
from typing import (
TYPE_CHECKING, Any, Callable, ClassVar, DefaultDict, Dict, Generator,
Iterator, List, Mapping, Optional, Sequence, Tuple,
)
import ast
import re
import attr
from pydoctor import model, linker
from pydoctor.epydoc.markup import Field as EpydocField, ParseError, get_parser_by_name
from twisted.web.template import Tag, tags
from pydoctor.epydoc.markup import ParsedDocstring
import pydoctor.epydoc.markup.plaintext
from pydoctor.epydoc.markup._pyval_repr import colorize_pyval, colorize_inline_pyval
if TYPE_CHECKING:
from twisted.web.template import Flattenable
taglink = linker.taglink
"""
Alias to L{pydoctor.linker.taglink()}.
"""
def get_parser(obj: model.Documentable) -> Callable[[str, List[ParseError], bool], ParsedDocstring]:
"""
Get the C{parse_docstring(str, List[ParseError], bool) -> ParsedDocstring} function.
"""
# Use module's __docformat__ if specified, else use system's.
# Except if system's docformat is plaintext, in this case, use plaintext.
# See https://github.com/twisted/pydoctor/issues/503 for the reason
# of this behavior.
if obj.system.options.docformat == 'plaintext':
return pydoctor.epydoc.markup.plaintext.parse_docstring
# the docstring should be parsed using the format of the module it was inherited from
docformat = obj.module.docformat or obj.system.options.docformat
try:
return get_parser_by_name(docformat, obj)
except ImportError as e:
msg = 'Error trying to import %r parser:\n\n %s: %s\n\nUsing plain text formatting only.'%(
docformat, e.__class__.__name__, e)
obj.system.msg('epydoc2stan', msg, thresh=-1, once=True)
return pydoctor.epydoc.markup.plaintext.parse_docstring
def get_docstring(
obj: model.Documentable
) -> Tuple[Optional[str], Optional[model.Documentable]]:
for source in obj.docsources():
doc = source.docstring
if doc:
return doc, source
if doc is not None:
# Treat empty docstring as undocumented.
return None, source
return None, None
@attr.s(auto_attribs=True)
class FieldDesc:
"""
Combines informations from multiple L{Field} objects into one.
Example::
:param foo: description of parameter foo
:type foo: SomeClass
"""
_UNDOCUMENTED: ClassVar[Tag] = tags.span(class_='undocumented')("Undocumented")
name: Optional[str] = None
"""Field name, i.e. C{:param <name>:}"""
type: Optional[Tag] = None
"""Formatted type"""
body: Optional[Tag] = None
def format(self) -> Generator[Tag, None, None]:
"""
@return: Iterator that yields one or two C{tags.td}.
"""
formatted = self.body or self._UNDOCUMENTED
fieldNameTd: List[Tag] = []
if self.name:
# Add the stars to the params names just before generating the field stan, not before.
if isinstance(self.name, VariableArgument):
prefix = "*"
elif isinstance(self.name, KeywordArgument):
prefix = "**"
else:
prefix = ""
name = tags.transparent(prefix, insert_break_points(self.name))
stan_name = tags.span(class_="fieldArg")(name)
if self.type:
stan_name(":")
fieldNameTd.append(stan_name)
if self.type:
fieldNameTd.append(self.type)
if fieldNameTd:
# <name>: <type> | <desc>
yield tags.td(class_="fieldArgContainer")(*fieldNameTd)
yield tags.td(class_="fieldArgDesc")(formatted)
else:
# <desc>
yield tags.td(formatted, colspan="2")
class RaisesDesc(FieldDesc):
"""Description of an exception that can be raised by function/method."""
def format(self) -> Generator[Tag, None, None]:
assert self.type is not None # TODO: Why can't it be None?
yield tags.td(tags.code(self.type), class_="fieldArgContainer")
yield tags.td(self.body or self._UNDOCUMENTED)
def format_desc_list(label: str, descs: Sequence[FieldDesc]) -> Iterator[Tag]:
"""
Format list of L{FieldDesc}. Used for param, returns, raises, etc.
Generates a 2-columns layout as follow::
+------------------------------------+
| <label> |
| <name>: <type> | <desc> |
| <name>: <type> | <desc> |
+------------------------------------+
If the fields don't have type or name information,
generates the same output as L{format_field_list}::
+------------------------------------+
| <label> |
| <desc ... > |
+------------------------------------+
@arg label: Section "mini heading"
@arg descs: L{FieldDesc}s
@returns: Each row as iterator or None if no C{descs} id provided.
"""
if not descs:
return
# <label>
row = tags.tr(class_="fieldStart")
row(tags.td(class_="fieldName", colspan="2")(label))
# yield the first row.
yield row
# yield descriptions.
for d in descs:
row = tags.tr()
# <name>: <type> | <desc>
# or
# <desc ... >
row(d.format())
yield row
@attr.s(auto_attribs=True)
class Field:
"""Like L{pydoctor.epydoc.markup.Field}, but without the gross accessor
methods and with a formatted body.
Example::
@note: some other information
"""
tag: str
"""Field tag, i.e. C{:<tag>:} """
arg: Optional[str]
"""Field argument, i.e. C{:param <argument>:}"""
source: model.Documentable
lineno: int
body: ParsedDocstring
@classmethod
def from_epydoc(cls, field: EpydocField, source: model.Documentable) -> 'Field':
return cls(
tag=field.tag(),
arg=field.arg(),
source=source,
lineno=field.lineno,
body=field.body()
)
def format(self) -> Tag:
"""Present this field's body as HTML."""
return self.body.to_stan(self.source.docstring_linker)
def report(self, message: str) -> None:
self.source.report(message, lineno_offset=self.lineno, section='docstring')
def format_field_list(singular: str, plural: str, fields: Sequence[Field]) -> Iterator[Tag]:
"""
Format list of L{Field} object. Used for notes, see also, authors, etc.
Generates a 2-columns layout as follow::
+------------------------------------+
| <label> |
| <desc ... > |
+------------------------------------+
@returns: Each row as iterator
"""
if not fields:
return
label = singular if len(fields) == 1 else plural
row = tags.tr(class_="fieldStart")
row(tags.td(class_="fieldName", colspan="2")(label))
yield row
for field in fields:
row = tags.tr()
row(tags.td(colspan="2")(field.format()))
yield row
class VariableArgument(str):
"""
Encapsulate the name of C{vararg} parameters.
"""
class KeywordArgument(str):
"""
Encapsulate the name of C{kwarg} parameters.
"""
class FieldHandler:
def __init__(self, obj: model.Documentable):
self.obj = obj
self._linker = self.obj.docstring_linker
self.types: Dict[str, Optional[Tag]] = {}
self.parameter_descs: List[FieldDesc] = []
self.return_desc: Optional[FieldDesc] = None
self.yields_desc: Optional[FieldDesc] = None
self.raise_descs: List[RaisesDesc] = []
self.warns_desc: List[FieldDesc] = []
self.seealsos: List[Field] = []
self.notes: List[Field] = []
self.authors: List[Field] = []
self.sinces: List[Field] = []
self.unknowns: DefaultDict[str, List[FieldDesc]] = defaultdict(list)
def set_param_types_from_annotations(
self, annotations: Mapping[str, Optional[ast.expr]]
) -> None:
formatted_annotations = {
name: None if value is None
else colorize_inline_pyval(value).to_stan(self._linker)
for name, value in annotations.items()
}
ret_type = formatted_annotations.pop('return', None)
self.types.update(formatted_annotations)
if ret_type is not None:
# In most cases 'None' is not an actual return type, but the absence
# of a returned value. Not storing it is the easiest way to prevent
# it from being presented.
ann_ret = annotations['return']
assert ann_ret is not None # ret_type would be None otherwise
if not _is_none_literal(ann_ret):
self.return_desc = FieldDesc(type=ret_type)
@staticmethod
def _report_unexpected_argument(field:Field) -> None:
if field.arg is not None:
field.report('Unexpected argument in %s field' % (field.tag,))
def handle_return(self, field: Field) -> None:
self._report_unexpected_argument(field)
if not self.return_desc:
self.return_desc = FieldDesc()
self.return_desc.body = field.format()
handle_returns = handle_return
def handle_yield(self, field: Field) -> None:
self._report_unexpected_argument(field)
if not self.yields_desc:
self.yields_desc = FieldDesc()
self.yields_desc.body = field.format()
handle_yields = handle_yield
def handle_returntype(self, field: Field) -> None:
self._report_unexpected_argument(field)
if not self.return_desc:
self.return_desc = FieldDesc()
self.return_desc.type = field.format()
handle_rtype = handle_returntype
def handle_yieldtype(self, field: Field) -> None:
self._report_unexpected_argument(field)
if not self.yields_desc:
self.yields_desc = FieldDesc()
self.yields_desc.type = field.format()
handle_ytype = handle_yieldtype
def _handle_param_name(self, field: Field) -> Optional[str]:
name = field.arg
if name is None:
field.report('Parameter name missing')
return None
name = name.lstrip('*')
annotations = None
if isinstance(field.source, model.Function):
annotations = field.source.annotations
elif isinstance(field.source, model.Class):
# Constructor parameters can be documented on the class.
annotations = field.source.constructor_params
# This might look useless, but it's needed in order to keep the
# right str type: str, VariableArgument or KeyowrdArgument. And then add the stars accordingly.
if annotations is not None:
for param_name, _ in annotations.items():
if param_name == name:
name = param_name
return name
def _handle_param_not_found(self, name: str, field: Field) -> None:
"""Figure out if the parameter might exist despite not being found
in this documentable's code, warn if not.
"""
source = field.source
if source is not self.obj:
# Docstring is inherited, so it may not represent this exact method.
return
if isinstance(source, model.Class):
if None in source.baseobjects:
# Class has a computed base class, which could define parameters
# we can't discover.
# For example, this class might use
# L{twisted.python.components.proxyForInterface()}.
return
if name in source.constructor_params:
# Constructor parameters can be documented on the class.
return
field.report('Documented parameter "%s" does not exist' % (name,))
def handle_type(self, field: Field) -> None:
if isinstance(self.obj, model.Attribute):
if field.arg is not None:
field.report('Field in variable docstring should not include a name')
self.obj.parsed_type = field.body
return
elif isinstance(self.obj, model.Function):
name = self._handle_param_name(field)
if name is not None and name not in self.types and not any(
# Don't warn about keywords or about parameters we already
# reported a warning for.
desc.name == name for desc in self.parameter_descs
):
self._handle_param_not_found(name, field)
else:
# Note: extract_fields() will issue warnings about missing field
# names, so we can silently ignore them here.
# TODO: Processing the fields once in extract_fields() and again
# in format_docstring() adds complexity and can cause
# inconsistencies.
name = field.arg
if name is not None:
self.types[name] = field.format()
def handle_param(self, field: Field) -> None:
name = self._handle_param_name(field)
if name is not None:
if any(desc.name == name for desc in self.parameter_descs):
field.report('Parameter "%s" was already documented' % (name,))
self.parameter_descs.append(FieldDesc(name=name, body=field.format()))
if name not in self.types:
self._handle_param_not_found(name, field)
handle_arg = handle_param
def handle_keyword(self, field: Field) -> None:
name = self._handle_param_name(field)
if name is not None:
# TODO: How should this be matched to the type annotation?
self.parameter_descs.append(FieldDesc(name=name, body=field.format()))
if name in self.types:
field.report('Parameter "%s" is documented as keyword' % (name,))
def handled_elsewhere(self, field: Field) -> None:
# Some fields are handled by extract_fields below.
pass
handle_ivar = handled_elsewhere
handle_cvar = handled_elsewhere
handle_var = handled_elsewhere
def handle_raises(self, field: Field) -> None:
name = field.arg
if name is None:
field.report('Exception type missing')
typ_fmt = tags.span(class_='undocumented')("Unknown exception")
else:
typ_fmt = self._linker.link_to(name, name)
self.raise_descs.append(RaisesDesc(type=typ_fmt, body=field.format()))
handle_raise = handle_raises
handle_except = handle_raises
# Warns is just like raises but the syntax is more relax i.e. warning type not required.
def handle_warns(self, field: Field) -> None:
if field.arg is None:
typ_fmt = None
else:
typ_fmt = self._linker.link_to(field.arg, field.arg)
self.warns_desc.append(FieldDesc(type=typ_fmt, body=field.format()))
handle_warn = handle_warns
def handle_seealso(self, field: Field) -> None:
self.seealsos.append(field)
handle_see = handle_seealso
def handle_note(self, field: Field) -> None:
self.notes.append(field)
def handle_author(self, field: Field) -> None:
self.authors.append(field)
def handle_since(self, field: Field) -> None:
self.sinces.append(field)
def handleUnknownField(self, field: Field) -> None:
name = field.tag
field.report(f"Unknown field '{name}'" )
self.unknowns[name].append(FieldDesc(name=field.arg, body=field.format()))
def handle(self, field: Field) -> None:
m = getattr(self, 'handle_' + field.tag, self.handleUnknownField)
m(field)
def resolve_types(self) -> None:
"""Merge information from 'param' fields and AST analysis."""
params = {param.name: param for param in self.parameter_descs}
any_info = bool(params)
# We create a new parameter_descs list to ensure the parameter order
# matches the AST order.
new_parameter_descs = []
for index, (name, type_doc) in enumerate(self.types.items()):
try:
param = params.pop(name)
except KeyError:
if index == 0 and name in ('self', 'cls'):
continue
param = FieldDesc(name=name, type=type_doc)
any_info |= type_doc is not None
else:
param.type = type_doc
new_parameter_descs.append(param)
# Add any leftover parameters, which includes documented **kwargs keywords
# and non-existing (but documented) parameters.
new_parameter_descs += params.values()
# Only replace the descriptions if at least one parameter is documented
# or annotated.
if any_info:
self.parameter_descs = new_parameter_descs
def format(self) -> Tag:
r: List[Tag] = []
r += format_desc_list('Parameters', self.parameter_descs)
if self.return_desc:
r += format_desc_list('Returns', [self.return_desc])
if self.yields_desc:
r += format_desc_list('Yields', [self.yields_desc])
r += format_desc_list("Raises", self.raise_descs)
r += format_desc_list("Warns", self.warns_desc)
for s_p_l in (('Author', 'Authors', self.authors),
('See Also', 'See Also', self.seealsos),
('Present Since', 'Present Since', self.sinces),
('Note', 'Notes', self.notes)):
r += format_field_list(*s_p_l)
for kind, fieldlist in self.unknowns.items():
r += format_desc_list(f"Unknown Field: {kind}", fieldlist)
if any(r):
return tags.table(class_='fieldTable')(r)
else:
return tags.transparent
def _is_none_literal(node: ast.expr) -> bool:
"""Does this AST node represent the literal constant None?"""
return isinstance(node, (ast.Constant, ast.NameConstant)) and node.value is None
def reportErrors(obj: model.Documentable, errs: Sequence[ParseError], section:str='docstring') -> None:
if errs and obj.fullName() not in obj.system.docstring_syntax_errors:
obj.system.docstring_syntax_errors.add(obj.fullName())
for err in errs:
obj.report(
f'bad {section}: ' + err.descr(),
lineno_offset=(err.linenum() or 1) - 1,
section=section
)
def parse_docstring(
obj: model.Documentable,
doc: str,
source: model.Documentable,
markup: Optional[str]=None,
section: str='docstring',
) -> ParsedDocstring:
"""Parse a docstring.
@param obj: The object we're parsing the documentation for.
@param doc: The docstring.
@param source: The object on which the docstring is defined.
This can differ from C{obj} if the docstring is inherited.
@param markup: Parse the docstring with the given markup, ignoring system's options.
Useful for creating L{ParsedDocstring}s from restructuredtext for instance.
@param section: A custom section to use.
"""
parser = get_parser(source) if not markup else get_parser_by_name(markup, obj)
errs: List[ParseError] = []
try:
parsed_doc = parser(doc, errs, obj.system.options.processtypes)
except Exception as e:
errs.append(ParseError(f'{e.__class__.__name__}: {e}', 1))
parsed_doc = pydoctor.epydoc.markup.plaintext.parse_docstring(doc, errs)
if errs:
reportErrors(source, errs, section=section)
return parsed_doc
def ensure_parsed_docstring(obj: model.Documentable) -> Optional[model.Documentable]:
"""
Currently, it's not 100% clear at what point the L{Documentable.parsed_docstring} attribute is set.
It can be set from the ast builder or later processing step.
This function ensures that the C{parsed_docstring} attribute of a documentable is set to it's final value.
@returns:
- If the C{obj.parsed_docstring} is set to a L{ParsedDocstring} instance:
The source object of the docstring (might be different
from C{obj} if the documentation is inherited).
- If the object is undocumented: C{None}.
"""
doc, source = get_docstring(obj)
# Use cached or split version if possible.
parsed_doc = obj.parsed_docstring
if source is None:
if parsed_doc is None:
# We don't use 'source' if parsed_doc is None, but mypy is not that
# sophisticated, so we fool it by assigning a dummy object.
source = obj
else:
# A split field is documented by its parent.
source = obj.parent
assert source is not None
if parsed_doc is None and doc is not None:
parsed_doc = parse_docstring(obj, doc, source)
obj.parsed_docstring = parsed_doc
if obj.parsed_docstring is not None:
return source
else:
return None
class ParsedStanOnly(ParsedDocstring):
"""
A L{ParsedDocstring} directly constructed from stan, for caching purposes.
L{to_stan} method simply returns back what's given to L{ParsedStanOnly.__init__}.
"""
def __init__(self, stan: Tag):
super().__init__(fields=[])
self._fromstan = stan
def has_body(self) -> bool:
return True
def to_stan(self, docstring_linker: Any, compact:bool=False) -> Tag:
return self._fromstan
def to_node(self) -> Any:
raise NotImplementedError()
def _get_parsed_summary(obj: model.Documentable) -> Tuple[Optional[model.Documentable], ParsedDocstring]:
"""
Ensures that the L{model.Documentable.parsed_summary} attribute of a documentable is set to it's final value.
Do not generate summary twice.
@returns: Tuple: C{source}, C{parsed docstring}
"""
source = ensure_parsed_docstring(obj)
if obj.parsed_summary is not None:
return (source, obj.parsed_summary)
if source is None:
summary_parsed_doc: ParsedDocstring = ParsedStanOnly(format_undocumented(obj))
else:
# Tell mypy that if we found a docstring, we also have its source.
assert obj.parsed_docstring is not None
summary_parsed_doc = obj.parsed_docstring.get_summary()
assert summary_parsed_doc is not None
obj.parsed_summary = summary_parsed_doc
return (source, summary_parsed_doc)
def format_docstring(obj: model.Documentable) -> Tag:
"""Generate an HTML representation of a docstring"""
source = ensure_parsed_docstring(obj)
ret: Tag = tags.div
if source is None:
ret(tags.p(class_='undocumented')("Undocumented"))
else:
assert obj.parsed_docstring is not None, "ensure_parsed_docstring() did not do it's job"
try:
stan = obj.parsed_docstring.to_stan(source.docstring_linker, compact=False)
except Exception as e:
errs = [ParseError(f'{e.__class__.__name__}: {e}', 1)]
if source.docstring is None:
stan = tags.p(class_="undocumented")('Broken description')
else:
parsed_doc_plain = pydoctor.epydoc.markup.plaintext.parse_docstring(source.docstring, errs)
stan = parsed_doc_plain.to_stan(source.docstring_linker)
reportErrors(source, errs)
if stan.tagName:
ret(stan)
else:
ret(*stan.children)
fh = FieldHandler(obj)
if isinstance(obj, model.Function):
fh.set_param_types_from_annotations(obj.annotations)
if source is not None:
assert obj.parsed_docstring is not None, "ensure_parsed_docstring() did not do it's job"
for field in obj.parsed_docstring.fields:
fh.handle(Field.from_epydoc(field, source))
if isinstance(obj, model.Function):
fh.resolve_types()
ret(fh.format())
return ret
# TODO: FIX https://github.com/twisted/pydoctor/issues/86
# Use to_node() and compute shortened HTML from node tree with a visitor intead of using the raw source.
def format_summary(obj: model.Documentable) -> Tag:
"""Generate an shortened HTML representation of a docstring."""
source, parsed_doc = _get_parsed_summary(obj)
if not source:
source = obj
try:
# Disallow same_page_optimization in order to make sure we're not
# breaking links when including the summaries on other pages.
with source.docstring_linker.disable_same_page_optimazation():
stan = parsed_doc.to_stan(source.docstring_linker)
except Exception:
# This problem will likely be reported by the full docstring as well,
# so don't spam the log.
stan = tags.span(class_='undocumented')("Broken description")
obj.parsed_summary = ParsedStanOnly(stan)
return stan
def format_undocumented(obj: model.Documentable) -> Tag:
"""Generate an HTML representation for an object lacking a docstring."""
sub_objects_with_docstring_count: DefaultDict[model.DocumentableKind, int] = defaultdict(int)
sub_objects_total_count: DefaultDict[model.DocumentableKind, int] = defaultdict(int)
for sub_ob in obj.contents.values():
kind = sub_ob.kind
if kind is not None:
sub_objects_total_count[kind] += 1
if sub_ob.docstring is not None:
sub_objects_with_docstring_count[kind] += 1
tag: Tag = tags.span(class_='undocumented')
if sub_objects_with_docstring_count:
kind = obj.kind
assert kind is not None # if kind is None, object is invisible
tag(
"No ", format_kind(kind).lower(), " docstring; ",
', '.join(
f"{sub_objects_with_docstring_count[kind]}/{sub_objects_total_count[kind]} "
f"{format_kind(kind, plural=sub_objects_with_docstring_count[kind]>=2).lower()}"
for kind in sorted(sub_objects_total_count, key=(lambda x:x.value))
),
" documented"
)
else:
tag("Undocumented")
return tag
def type2stan(obj: model.Documentable) -> Optional[Tag]:
parsed_type = get_parsed_type(obj)
if parsed_type is None:
return None
else:
return parsed_type.to_stan(obj.docstring_linker)
def get_parsed_type(obj: model.Documentable) -> Optional[ParsedDocstring]:
parsed_type = obj.parsed_type
if parsed_type is not None:
return parsed_type
annotation: Optional[ast.expr] = getattr(obj, 'annotation', None)
if annotation is not None:
return colorize_inline_pyval(annotation)
return None
def format_toc(obj: model.Documentable) -> Optional[Tag]:
# Load the parsed_docstring if it's not already done.
ensure_parsed_docstring(obj)
if obj.parsed_docstring:
if obj.system.options.sidebartocdepth > 0:
toc = obj.parsed_docstring.get_toc(depth=obj.system.options.sidebartocdepth)
if toc:
return toc.to_stan(obj.docstring_linker)
return None
field_name_to_kind = {
'ivar': model.DocumentableKind.INSTANCE_VARIABLE,
'cvar': model.DocumentableKind.CLASS_VARIABLE,
'var': model.DocumentableKind.VARIABLE,
}
def extract_fields(obj: model.Documentable) -> None:
"""Populate Attributes for module/class variables using fields from
that module/class's docstring.
Must only be called for objects that have a docstring.
"""
doc = obj.docstring
assert doc is not None, obj
parsed_doc = parse_docstring(obj, doc, obj)
obj.parsed_docstring = parsed_doc
for field in parsed_doc.fields:
tag = field.tag()
if tag in ['ivar', 'cvar', 'var', 'type']:
arg = field.arg()
if arg is None:
obj.report("Missing field name in @%s" % (tag,),
'docstring', field.lineno)
continue
attrobj: Optional[model.Documentable] = obj.contents.get(arg)
if attrobj is None:
attrobj = obj.system.Attribute(obj.system, arg, obj)
attrobj.kind = None
attrobj.parentMod = obj.parentMod
obj.system.addObject(attrobj)
attrobj.setLineNumber(obj.docstring_lineno + field.lineno)
if tag == 'type':
attrobj.parsed_type = field.body()
else:
attrobj.parsed_docstring = field.body()
attrobj.kind = field_name_to_kind[tag]
def format_kind(kind: model.DocumentableKind, plural: bool = False) -> str:
"""
Transform a `model.DocumentableKind` Enum value to string.
"""
names = {
model.DocumentableKind.PACKAGE : 'Package',
model.DocumentableKind.MODULE : 'Module',
model.DocumentableKind.INTERFACE : 'Interface',
model.DocumentableKind.CLASS : 'Class',
model.DocumentableKind.CLASS_METHOD : 'Class Method',
model.DocumentableKind.STATIC_METHOD : 'Static Method',
model.DocumentableKind.METHOD : 'Method',
model.DocumentableKind.FUNCTION : 'Function',
model.DocumentableKind.CLASS_VARIABLE : 'Class Variable',
model.DocumentableKind.ATTRIBUTE : 'Attribute',
model.DocumentableKind.INSTANCE_VARIABLE : 'Instance Variable',
model.DocumentableKind.PROPERTY : 'Property',
model.DocumentableKind.VARIABLE : 'Variable',
model.DocumentableKind.SCHEMA_FIELD : 'Attribute',
model.DocumentableKind.CONSTANT : 'Constant',
}
plurals = {
model.DocumentableKind.CLASS : 'Classes',
model.DocumentableKind.PROPERTY : 'Properties',
}
if plural:
return plurals.get(kind, names[kind] + 's')
else:
return names[kind]
def _format_constant_value(obj: model.Attribute) -> Iterator["Flattenable"]:
# yield the table title, "Value"
row = tags.tr(class_="fieldStart")
row(tags.td(class_="fieldName")("Value"))
# yield the first row.
yield row
doc = colorize_pyval(obj.value,
linelen=obj.system.options.pyvalreprlinelen,
maxlines=obj.system.options.pyvalreprmaxlines)
value_repr = doc.to_stan(obj.docstring_linker)
# Report eventual warnings. It warns when a regex failed to parse or the html2stan() function fails.
for message in doc.warnings:
obj.report(message)
# yield the value repr.
row = tags.tr()
row(tags.td(tags.pre(class_='constant-value')(value_repr)))
yield row
def format_constant_value(obj: model.Attribute) -> "Flattenable":
"""
Should be only called for L{Attribute} objects that have the L{Attribute.value} property set.
"""
rows = list(_format_constant_value(obj))
return tags.table(class_='valueTable')(*rows)
def _split_indentifier_parts_on_case(indentifier:str) -> List[str]:
def split(text:str, sep:str) -> List[str]:
# We use \u200b as temp token to hack a split that passes the tests.
return text.replace(sep, '\u200b'+sep).split('\u200b')
match = re.match('(_{1,2})?(.*?)(_{1,2})?$', indentifier)
assert match is not None # the regex always matches
prefix, text, suffix = match.groups(default='')
text_parts = []
if text.islower() or text.isupper():
# We assume snake_case or SCREAMING_SNAKE_CASE.
text_parts = split(text, '_')
else:
# We assume camelCase. We're not using a regex because we also want it
# to work with non-ASCII characters (and the Python re module does not
# support checking for Unicode properties using something like \p{Lu}).
current_part = ''
previous_was_upper = False
for c in text:
if c.isupper() and not previous_was_upper:
text_parts.append(current_part)
current_part = ''
current_part += c
previous_was_upper = c.isupper()
if current_part:
text_parts.append(current_part)
if not text_parts: # the name is composed only by underscores
text_parts = ['']
if prefix:
text_parts[0] = prefix + text_parts[0]
if suffix:
text_parts[-1] = text_parts[-1] + suffix
return text_parts
def insert_break_points(text: str) -> 'Flattenable':
"""
Browsers aren't smart enough to recognize word breaking opportunities in
snake_case or camelCase, so this function helps them out by inserting
word break opportunities.
:note: It support full dotted names and will add a wbr tag after each dot.
"""
# We use tags.wbr instead of zero-width spaces because
# zero-width spaces can interfer in subtle ways when copy/pasting a name.
r: List['Flattenable'] = []
parts = text.split('.')
for i,t in enumerate(parts):
_parts = _split_indentifier_parts_on_case(t)
for i_,p in enumerate(_parts):
r += [p]
if i_ != len(_parts)-1:
r += [tags.wbr()]
if i != len(parts)-1:
r += [tags.wbr(), '.']
return tags.transparent(*r)