"""Tests the Python Domain"""

from __future__ import annotations

import re
from unittest.mock import Mock

import docutils.utils
import pytest
from docutils import nodes

from sphinx import addnodes
from sphinx.addnodes import (
    desc,
    desc_annotation,
    desc_content,
    desc_name,
    desc_parameter,
    desc_parameterlist,
    desc_returns,
    desc_sig_keyword,
    desc_sig_literal_number,
    desc_sig_literal_string,
    desc_sig_name,
    desc_sig_operator,
    desc_sig_punctuation,
    desc_sig_space,
    desc_signature,
    desc_type_parameter,
    desc_type_parameter_list,
    pending_xref,
)
from sphinx.domains import IndexEntry
from sphinx.domains.python import PythonDomain, PythonModuleIndex
from sphinx.domains.python._annotations import _parse_annotation, _pseudo_parse_arglist
from sphinx.domains.python._object import py_sig_re
from sphinx.testing import restructuredtext
from sphinx.testing.util import assert_node
from sphinx.writers.text import STDINDENT


def parse(sig):
    m = py_sig_re.match(sig)
    if m is None:
        raise ValueError
    name_prefix, tp_list, name, arglist, retann = m.groups()
    signode = addnodes.desc_signature(sig, '')
    _pseudo_parse_arglist(signode, arglist)
    return signode.astext()


def test_function_signatures():
    rv = parse('func(a=1) -> int object')
    assert rv == '(a=1)'

    rv = parse('func(a=1, [b=None])')
    assert rv == '(a=1, [b=None])'

    rv = parse('func(a=1[, b=None])')
    assert rv == '(a=1, [b=None])'

    rv = parse("compile(source : string, filename, symbol='file')")
    assert rv == "(source : string, filename, symbol='file')"

    rv = parse('func(a=[], [b=None])')
    assert rv == '(a=[], [b=None])'

    rv = parse('func(a=[][, b=None])')
    assert rv == '(a=[], [b=None])'


@pytest.mark.sphinx('dummy', testroot='domain-py')
def test_domain_py_xrefs(app, status, warning):
    """Domain objects have correct prefixes when looking up xrefs"""
    app.build(force_all=True)

    def assert_refnode(node, module_name, class_name, target, reftype=None,
                       domain='py'):
        attributes = {
            'refdomain': domain,
            'reftarget': target,
        }
        if reftype is not None:
            attributes['reftype'] = reftype
        if module_name is not False:
            attributes['py:module'] = module_name
        if class_name is not False:
            attributes['py:class'] = class_name
        assert_node(node, **attributes)

    doctree = app.env.get_doctree('roles')
    refnodes = list(doctree.findall(pending_xref))
    assert_refnode(refnodes[0], None, None, 'TopLevel', 'class')
    assert_refnode(refnodes[1], None, None, 'top_level', 'meth')
    assert_refnode(refnodes[2], None, 'NestedParentA', 'child_1', 'meth')
    assert_refnode(refnodes[3], None, 'NestedParentA', 'NestedChildA.subchild_2', 'meth')
    assert_refnode(refnodes[4], None, 'NestedParentA', 'child_2', 'meth')
    assert_refnode(refnodes[5], False, 'NestedParentA', 'any_child', domain='')
    assert_refnode(refnodes[6], None, 'NestedParentA', 'NestedChildA', 'class')
    assert_refnode(refnodes[7], None, 'NestedParentA.NestedChildA', 'subchild_2', 'meth')
    assert_refnode(refnodes[8], None, 'NestedParentA.NestedChildA',
                   'NestedParentA.child_1', 'meth')
    assert_refnode(refnodes[9], None, 'NestedParentA', 'NestedChildA.subchild_1', 'meth')
    assert_refnode(refnodes[10], None, 'NestedParentB', 'child_1', 'meth')
    assert_refnode(refnodes[11], None, 'NestedParentB', 'NestedParentB', 'class')
    assert_refnode(refnodes[12], None, None, 'NestedParentA.NestedChildA', 'class')
    assert len(refnodes) == 13

    doctree = app.env.get_doctree('module')
    refnodes = list(doctree.findall(pending_xref))
    assert_refnode(refnodes[0], 'module_a.submodule', None,
                   'ModTopLevel', 'class')
    assert_refnode(refnodes[1], 'module_a.submodule', 'ModTopLevel',
                   'mod_child_1', 'meth')
    assert_refnode(refnodes[2], 'module_a.submodule', 'ModTopLevel',
                   'ModTopLevel.mod_child_1', 'meth')
    assert_refnode(refnodes[3], 'module_a.submodule', 'ModTopLevel',
                   'mod_child_2', 'meth')
    assert_refnode(refnodes[4], 'module_a.submodule', 'ModTopLevel',
                   'module_a.submodule.ModTopLevel.mod_child_1', 'meth')
    assert_refnode(refnodes[5], 'module_a.submodule', 'ModTopLevel',
                   'prop', 'attr')
    assert_refnode(refnodes[6], 'module_a.submodule', 'ModTopLevel',
                   'prop', 'meth')
    assert_refnode(refnodes[7], 'module_b.submodule', None,
                   'ModTopLevel', 'class')
    assert_refnode(refnodes[8], 'module_b.submodule', 'ModTopLevel',
                   'ModNoModule', 'class')
    assert_refnode(refnodes[9], False, False, 'int', 'class')
    assert_refnode(refnodes[10], False, False, 'tuple', 'class')
    assert_refnode(refnodes[11], False, False, 'str', 'class')
    assert_refnode(refnodes[12], False, False, 'float', 'class')
    assert_refnode(refnodes[13], False, False, 'list', 'class')
    assert_refnode(refnodes[14], False, False, 'ModTopLevel', 'class')
    assert_refnode(refnodes[15], False, False, 'index', 'doc', domain='std')
    assert_refnode(refnodes[16], False, False, 'typing.Literal', 'obj', domain='py')
    assert_refnode(refnodes[17], False, False, 'typing.Literal', 'obj', domain='py')
    assert len(refnodes) == 18

    doctree = app.env.get_doctree('module_option')
    refnodes = list(doctree.findall(pending_xref))
    print(refnodes)
    print(refnodes[0])
    print(refnodes[1])
    assert_refnode(refnodes[0], 'test.extra', 'B', 'foo', 'meth')
    assert_refnode(refnodes[1], 'test.extra', 'B', 'foo', 'meth')
    assert len(refnodes) == 2


@pytest.mark.sphinx('html', testroot='domain-py')
def test_domain_py_xrefs_abbreviations(app, status, warning):
    app.build(force_all=True)

    content = (app.outdir / 'abbr.html').read_text(encoding='utf8')
    assert re.search(r'normal: <a .* href="module.html#module_a.submodule.ModTopLevel.'
                     r'mod_child_1" .*><.*>module_a.submodule.ModTopLevel.mod_child_1\(\)'
                     r'<.*></a>',
                     content)
    assert re.search(r'relative: <a .* href="module.html#module_a.submodule.ModTopLevel.'
                     r'mod_child_1" .*><.*>ModTopLevel.mod_child_1\(\)<.*></a>',
                     content)
    assert re.search(r'short name: <a .* href="module.html#module_a.submodule.ModTopLevel.'
                     r'mod_child_1" .*><.*>mod_child_1\(\)<.*></a>',
                     content)
    assert re.search(r'relative \+ short name: <a .* href="module.html#module_a.submodule.'
                     r'ModTopLevel.mod_child_1" .*><.*>mod_child_1\(\)<.*></a>',
                     content)
    assert re.search(r'short name \+ relative: <a .* href="module.html#module_a.submodule.'
                     r'ModTopLevel.mod_child_1" .*><.*>mod_child_1\(\)<.*></a>',
                     content)


@pytest.mark.sphinx('dummy', testroot='domain-py')
def test_domain_py_objects(app, status, warning):
    app.build(force_all=True)

    modules = app.env.domains['py'].data['modules']
    objects = app.env.domains['py'].data['objects']

    assert 'module_a.submodule' in modules
    assert 'module_a.submodule' in objects
    assert 'module_b.submodule' in modules
    assert 'module_b.submodule' in objects

    assert objects['module_a.submodule.ModTopLevel'][2] == 'class'
    assert objects['module_a.submodule.ModTopLevel.mod_child_1'][2] == 'method'
    assert objects['module_a.submodule.ModTopLevel.mod_child_2'][2] == 'method'
    assert 'ModTopLevel.ModNoModule' not in objects
    assert objects['ModNoModule'][2] == 'class'
    assert objects['module_b.submodule.ModTopLevel'][2] == 'class'

    assert objects['TopLevel'][2] == 'class'
    assert objects['top_level'][2] == 'method'
    assert objects['NestedParentA'][2] == 'class'
    assert objects['NestedParentA.child_1'][2] == 'method'
    assert objects['NestedParentA.any_child'][2] == 'method'
    assert objects['NestedParentA.NestedChildA'][2] == 'class'
    assert objects['NestedParentA.NestedChildA.subchild_1'][2] == 'method'
    assert objects['NestedParentA.NestedChildA.subchild_2'][2] == 'method'
    assert objects['NestedParentA.child_2'][2] == 'method'
    assert objects['NestedParentB'][2] == 'class'
    assert objects['NestedParentB.child_1'][2] == 'method'


@pytest.mark.sphinx('html', testroot='domain-py')
def test_resolve_xref_for_properties(app, status, warning):
    app.build(force_all=True)

    content = (app.outdir / 'module.html').read_text(encoding='utf8')
    assert ('Link to <a class="reference internal" href="#module_a.submodule.ModTopLevel.prop"'
            ' title="module_a.submodule.ModTopLevel.prop">'
            '<code class="xref py py-attr docutils literal notranslate"><span class="pre">'
            'prop</span> <span class="pre">attribute</span></code></a>' in content)
    assert ('Link to <a class="reference internal" href="#module_a.submodule.ModTopLevel.prop"'
            ' title="module_a.submodule.ModTopLevel.prop">'
            '<code class="xref py py-meth docutils literal notranslate"><span class="pre">'
            'prop</span> <span class="pre">method</span></code></a>' in content)
    assert ('Link to <a class="reference internal" href="#module_a.submodule.ModTopLevel.prop"'
            ' title="module_a.submodule.ModTopLevel.prop">'
            '<code class="xref py py-attr docutils literal notranslate"><span class="pre">'
            'prop</span> <span class="pre">attribute</span></code></a>' in content)


@pytest.mark.sphinx('dummy', testroot='domain-py')
def test_domain_py_find_obj(app, status, warning):

    def find_obj(modname, prefix, obj_name, obj_type, searchmode=0):
        return app.env.domains['py'].find_obj(
            app.env, modname, prefix, obj_name, obj_type, searchmode)

    app.build(force_all=True)

    assert (find_obj(None, None, 'NONEXISTANT', 'class') == [])
    assert (find_obj(None, None, 'NestedParentA', 'class') ==
            [('NestedParentA', ('roles', 'NestedParentA', 'class', False))])
    assert (find_obj(None, None, 'NestedParentA.NestedChildA', 'class') ==
            [('NestedParentA.NestedChildA',
              ('roles', 'NestedParentA.NestedChildA', 'class', False))])
    assert (find_obj(None, 'NestedParentA', 'NestedChildA', 'class') ==
            [('NestedParentA.NestedChildA',
              ('roles', 'NestedParentA.NestedChildA', 'class', False))])
    assert (find_obj(None, None, 'NestedParentA.NestedChildA.subchild_1', 'meth') ==
            [('NestedParentA.NestedChildA.subchild_1',
              ('roles', 'NestedParentA.NestedChildA.subchild_1', 'method', False))])
    assert (find_obj(None, 'NestedParentA', 'NestedChildA.subchild_1', 'meth') ==
            [('NestedParentA.NestedChildA.subchild_1',
              ('roles', 'NestedParentA.NestedChildA.subchild_1', 'method', False))])
    assert (find_obj(None, 'NestedParentA.NestedChildA', 'subchild_1', 'meth') ==
            [('NestedParentA.NestedChildA.subchild_1',
              ('roles', 'NestedParentA.NestedChildA.subchild_1', 'method', False))])


def test_get_full_qualified_name():
    env = Mock(domaindata={})
    domain = PythonDomain(env)

    # non-python references
    node = nodes.reference()
    assert domain.get_full_qualified_name(node) is None

    # simple reference
    node = nodes.reference(reftarget='func')
    assert domain.get_full_qualified_name(node) == 'func'

    # with py:module context
    kwargs = {'py:module': 'module1'}
    node = nodes.reference(reftarget='func', **kwargs)
    assert domain.get_full_qualified_name(node) == 'module1.func'

    # with py:class context
    kwargs = {'py:class': 'Class'}
    node = nodes.reference(reftarget='func', **kwargs)
    assert domain.get_full_qualified_name(node) == 'Class.func'

    # with both py:module and py:class context
    kwargs = {'py:module': 'module1', 'py:class': 'Class'}
    node = nodes.reference(reftarget='func', **kwargs)
    assert domain.get_full_qualified_name(node) == 'module1.Class.func'


def test_parse_annotation(app):
    doctree = _parse_annotation("int", app.env)
    assert_node(doctree, ([pending_xref, "int"],))
    assert_node(doctree[0], pending_xref, refdomain="py", reftype="class", reftarget="int")

    doctree = _parse_annotation("List[int]", app.env)
    assert_node(doctree, ([pending_xref, "List"],
                          [desc_sig_punctuation, "["],
                          [pending_xref, "int"],
                          [desc_sig_punctuation, "]"]))

    doctree = _parse_annotation("Tuple[int, int]", app.env)
    assert_node(doctree, ([pending_xref, "Tuple"],
                          [desc_sig_punctuation, "["],
                          [pending_xref, "int"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [pending_xref, "int"],
                          [desc_sig_punctuation, "]"]))

    doctree = _parse_annotation("Tuple[()]", app.env)
    assert_node(doctree, ([pending_xref, "Tuple"],
                          [desc_sig_punctuation, "["],
                          [desc_sig_punctuation, "("],
                          [desc_sig_punctuation, ")"],
                          [desc_sig_punctuation, "]"]))

    doctree = _parse_annotation("Tuple[int, ...]", app.env)
    assert_node(doctree, ([pending_xref, "Tuple"],
                          [desc_sig_punctuation, "["],
                          [pending_xref, "int"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [desc_sig_punctuation, "..."],
                          [desc_sig_punctuation, "]"]))

    doctree = _parse_annotation("Callable[[int, int], int]", app.env)
    assert_node(doctree, ([pending_xref, "Callable"],
                          [desc_sig_punctuation, "["],
                          [desc_sig_punctuation, "["],
                          [pending_xref, "int"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [pending_xref, "int"],
                          [desc_sig_punctuation, "]"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [pending_xref, "int"],
                          [desc_sig_punctuation, "]"]))

    doctree = _parse_annotation("Callable[[], int]", app.env)
    assert_node(doctree, ([pending_xref, "Callable"],
                          [desc_sig_punctuation, "["],
                          [desc_sig_punctuation, "["],
                          [desc_sig_punctuation, "]"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [pending_xref, "int"],
                          [desc_sig_punctuation, "]"]))

    doctree = _parse_annotation("List[None]", app.env)
    assert_node(doctree, ([pending_xref, "List"],
                          [desc_sig_punctuation, "["],
                          [pending_xref, "None"],
                          [desc_sig_punctuation, "]"]))

    # None type makes an object-reference (not a class reference)
    doctree = _parse_annotation("None", app.env)
    assert_node(doctree, ([pending_xref, "None"],))
    assert_node(doctree[0], pending_xref, refdomain="py", reftype="obj", reftarget="None")

    # Literal type makes an object-reference (not a class reference)
    doctree = _parse_annotation("typing.Literal['a', 'b']", app.env)
    assert_node(doctree, ([pending_xref, "Literal"],
                          [desc_sig_punctuation, "["],
                          [desc_sig_literal_string, "'a'"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [desc_sig_literal_string, "'b'"],
                          [desc_sig_punctuation, "]"]))
    assert_node(doctree[0], pending_xref, refdomain="py", reftype="obj", reftarget="typing.Literal")


def test_parse_annotation_suppress(app):
    doctree = _parse_annotation("~typing.Dict[str, str]", app.env)
    assert_node(doctree, ([pending_xref, "Dict"],
                          [desc_sig_punctuation, "["],
                          [pending_xref, "str"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [pending_xref, "str"],
                          [desc_sig_punctuation, "]"]))
    assert_node(doctree[0], pending_xref, refdomain="py", reftype="obj", reftarget="typing.Dict")


def test_parse_annotation_Literal(app):
    doctree = _parse_annotation("Literal[True, False]", app.env)
    assert_node(doctree, ([pending_xref, "Literal"],
                          [desc_sig_punctuation, "["],
                          [desc_sig_keyword, "True"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [desc_sig_keyword, "False"],
                          [desc_sig_punctuation, "]"]))

    doctree = _parse_annotation("typing.Literal[0, 1, 'abc']", app.env)
    assert_node(doctree, ([pending_xref, "Literal"],
                          [desc_sig_punctuation, "["],
                          [desc_sig_literal_number, "0"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [desc_sig_literal_number, "1"],
                          [desc_sig_punctuation, ","],
                          desc_sig_space,
                          [desc_sig_literal_string, "'abc'"],
                          [desc_sig_punctuation, "]"]))


@pytest.mark.sphinx(freshenv=True)
def test_module_index(app):
    text = (".. py:module:: docutils\n"
            ".. py:module:: sphinx\n"
            ".. py:module:: sphinx.config\n"
            ".. py:module:: sphinx.builders\n"
            ".. py:module:: sphinx.builders.html\n"
            ".. py:module:: sphinx_intl\n")
    restructuredtext.parse(app, text)
    index = PythonModuleIndex(app.env.get_domain('py'))
    assert index.generate() == (
        [('d', [IndexEntry('docutils', 0, 'index', 'module-docutils', '', '', '')]),
         ('s', [IndexEntry('sphinx', 1, 'index', 'module-sphinx', '', '', ''),
                IndexEntry('sphinx.builders', 2, 'index', 'module-sphinx.builders', '', '', ''),
                IndexEntry('sphinx.builders.html', 2, 'index', 'module-sphinx.builders.html', '', '', ''),
                IndexEntry('sphinx.config', 2, 'index', 'module-sphinx.config', '', '', ''),
                IndexEntry('sphinx_intl', 0, 'index', 'module-sphinx_intl', '', '', '')])],
        False,
    )


@pytest.mark.sphinx(freshenv=True)
def test_module_index_submodule(app):
    text = ".. py:module:: sphinx.config\n"
    restructuredtext.parse(app, text)
    index = PythonModuleIndex(app.env.get_domain('py'))
    assert index.generate() == (
        [('s', [IndexEntry('sphinx', 1, '', '', '', '', ''),
                IndexEntry('sphinx.config', 2, 'index', 'module-sphinx.config', '', '', '')])],
        False,
    )


@pytest.mark.sphinx(freshenv=True)
def test_module_index_not_collapsed(app):
    text = (".. py:module:: docutils\n"
            ".. py:module:: sphinx\n")
    restructuredtext.parse(app, text)
    index = PythonModuleIndex(app.env.get_domain('py'))
    assert index.generate() == (
        [('d', [IndexEntry('docutils', 0, 'index', 'module-docutils', '', '', '')]),
         ('s', [IndexEntry('sphinx', 0, 'index', 'module-sphinx', '', '', '')])],
        True,
    )


@pytest.mark.sphinx(freshenv=True, confoverrides={'modindex_common_prefix': ['sphinx.']})
def test_modindex_common_prefix(app):
    text = (".. py:module:: docutils\n"
            ".. py:module:: sphinx\n"
            ".. py:module:: sphinx.config\n"
            ".. py:module:: sphinx.builders\n"
            ".. py:module:: sphinx.builders.html\n"
            ".. py:module:: sphinx_intl\n")
    restructuredtext.parse(app, text)
    index = PythonModuleIndex(app.env.get_domain('py'))
    assert index.generate() == (
        [('b', [IndexEntry('sphinx.builders', 1, 'index', 'module-sphinx.builders', '', '', ''),
                IndexEntry('sphinx.builders.html', 2, 'index', 'module-sphinx.builders.html', '', '', '')]),
         ('c', [IndexEntry('sphinx.config', 0, 'index', 'module-sphinx.config', '', '', '')]),
         ('d', [IndexEntry('docutils', 0, 'index', 'module-docutils', '', '', '')]),
         ('s', [IndexEntry('sphinx', 0, 'index', 'module-sphinx', '', '', ''),
                IndexEntry('sphinx_intl', 0, 'index', 'module-sphinx_intl', '', '', '')])],
        True,
    )


def test_no_index_entry(app):
    text = (".. py:function:: f()\n"
            ".. py:function:: g()\n"
            "   :no-index-entry:\n")
    doctree = restructuredtext.parse(app, text)
    assert_node(doctree, (addnodes.index, desc, addnodes.index, desc))
    assert_node(doctree[0], addnodes.index, entries=[('pair', 'built-in function; f()', 'f', '', None)])
    assert_node(doctree[2], addnodes.index, entries=[])

    text = (".. py:class:: f\n"
            ".. py:class:: g\n"
            "   :no-index-entry:\n")
    doctree = restructuredtext.parse(app, text)
    assert_node(doctree, (addnodes.index, desc, addnodes.index, desc))
    assert_node(doctree[0], addnodes.index, entries=[('single', 'f (built-in class)', 'f', '', None)])
    assert_node(doctree[2], addnodes.index, entries=[])


@pytest.mark.sphinx('html', testroot='domain-py-python_use_unqualified_type_names')
def test_python_python_use_unqualified_type_names(app, status, warning):
    app.build()
    content = (app.outdir / 'index.html').read_text(encoding='utf8')
    assert ('<span class="n"><a class="reference internal" href="#foo.Name" title="foo.Name">'
            '<span class="pre">Name</span></a></span>' in content)
    assert '<span class="n"><span class="pre">foo.Age</span></span>' in content
    assert ('<p><strong>name</strong> (<a class="reference internal" href="#foo.Name" '
            'title="foo.Name"><em>Name</em></a>) – blah blah</p>' in content)
    assert '<p><strong>age</strong> (<em>foo.Age</em>) – blah blah</p>' in content


@pytest.mark.sphinx('html', testroot='domain-py-python_use_unqualified_type_names',
                    confoverrides={'python_use_unqualified_type_names': False})
def test_python_python_use_unqualified_type_names_disabled(app, status, warning):
    app.build()
    content = (app.outdir / 'index.html').read_text(encoding='utf8')
    assert ('<span class="n"><a class="reference internal" href="#foo.Name" title="foo.Name">'
            '<span class="pre">foo.Name</span></a></span>' in content)
    assert '<span class="n"><span class="pre">foo.Age</span></span>' in content
    assert ('<p><strong>name</strong> (<a class="reference internal" href="#foo.Name" '
            'title="foo.Name"><em>foo.Name</em></a>) – blah blah</p>' in content)
    assert '<p><strong>age</strong> (<em>foo.Age</em>) – blah blah</p>' in content


@pytest.mark.sphinx('dummy', testroot='domain-py-xref-warning')
def test_warn_missing_reference(app, status, warning):
    app.build()
    assert "index.rst:6: WARNING: undefined label: 'no-label'" in warning.getvalue()
    assert ("index.rst:6: WARNING: Failed to create a cross reference. "
            "A title or caption not found: 'existing-label'") in warning.getvalue()


@pytest.mark.sphinx(confoverrides={'nitpicky': True})
@pytest.mark.parametrize('include_options', [True, False])
def test_signature_line_number(app, include_options):
    text = (".. py:function:: foo(bar : string)\n" +
            ("   :no-index-entry:\n" if include_options else ""))
    doc = restructuredtext.parse(app, text)
    xrefs = list(doc.findall(condition=addnodes.pending_xref))
    assert len(xrefs) == 1
    source, line = docutils.utils.get_source_line(xrefs[0])
    assert 'index.rst' in source
    assert line == 1


@pytest.mark.sphinx(
    'html',
    confoverrides={
        'python_maximum_signature_line_length': len("hello(name: str) -> str"),
        'maximum_signature_line_length': 1,
    },
)
def test_python_maximum_signature_line_length_overrides_global(app):
    text = ".. py:function:: hello(name: str) -> str"
    doctree = restructuredtext.parse(app, text)
    expected_doctree = (addnodes.index,
                        [desc, ([desc_signature, ([desc_name, "hello"],
                                                  desc_parameterlist,
                                                  [desc_returns, pending_xref, "str"])],
                                desc_content)])
    assert_node(doctree, expected_doctree)
    assert_node(doctree[1], addnodes.desc, desctype="function",
                domain="py", objtype="function", no_index=False)
    signame_node = [desc_sig_name, "name"]
    expected_sig = [desc_parameterlist, desc_parameter, (signame_node,
                                                         [desc_sig_punctuation, ":"],
                                                         desc_sig_space,
                                                         [nodes.inline, pending_xref, "str"])]
    assert_node(doctree[1][0][1], expected_sig)
    assert_node(doctree[1][0][1], desc_parameterlist, multi_line_parameter_list=False)


@pytest.mark.sphinx(
    'html', testroot='domain-py-python_maximum_signature_line_length',
)
def test_domain_py_python_maximum_signature_line_length_in_html(app, status, warning):
    app.build()
    content = (app.outdir / 'index.html').read_text(encoding='utf8')
    expected_parameter_list_hello = """\

<dl>
<dd>\
<em class="sig-param">\
<span class="n"><span class="pre">name</span></span>\
<span class="p"><span class="pre">:</span></span>\
<span class="w"> </span>\
<span class="n"><span class="pre">str</span></span>\
</em>,\
</dd>
</dl>

<span class="sig-paren">)</span> \
<span class="sig-return">\
<span class="sig-return-icon">&#x2192;</span> \
<span class="sig-return-typehint"><span class="pre">str</span></span>\
</span>\
<a class="headerlink" href="#hello" title="Link to this definition">¶</a>\
</dt>\
"""
    assert expected_parameter_list_hello in content

    param_line_fmt = '<dd>{}</dd>\n'
    param_name_fmt = (
        '<em class="sig-param"><span class="n"><span class="pre">{}</span></span></em>'
    )
    optional_fmt = '<span class="optional">{}</span>'

    expected_a = param_line_fmt.format(
        optional_fmt.format("[") + param_name_fmt.format("a") + "," + optional_fmt.format("["),
    )
    assert expected_a in content

    expected_b = param_line_fmt.format(
        param_name_fmt.format("b") + "," + optional_fmt.format("]") + optional_fmt.format("]"),
    )
    assert expected_b in content

    expected_c = param_line_fmt.format(param_name_fmt.format("c") + ",")
    assert expected_c in content

    expected_d = param_line_fmt.format(param_name_fmt.format("d") + optional_fmt.format("[") + ",")
    assert expected_d in content

    expected_e = param_line_fmt.format(param_name_fmt.format("e") + ",")
    assert expected_e in content

    expected_f = param_line_fmt.format(param_name_fmt.format("f") + "," + optional_fmt.format("]"))
    assert expected_f in content

    expected_parameter_list_foo = """\

<dl>
{}{}{}{}{}{}</dl>

<span class="sig-paren">)</span>\
<a class="headerlink" href="#foo" title="Link to this definition">¶</a>\
</dt>\
""".format(expected_a, expected_b, expected_c, expected_d, expected_e, expected_f)
    assert expected_parameter_list_foo in content


@pytest.mark.sphinx(
    'text', testroot='domain-py-python_maximum_signature_line_length',
)
def test_domain_py_python_maximum_signature_line_length_in_text(app, status, warning):
    app.build()
    content = (app.outdir / 'index.txt').read_text(encoding='utf8')
    param_line_fmt = STDINDENT * " " + "{}\n"

    expected_parameter_list_hello = "(\n{}) -> str".format(param_line_fmt.format("name: str,"))

    assert expected_parameter_list_hello in content

    expected_a = param_line_fmt.format("[a,[")
    assert expected_a in content

    expected_b = param_line_fmt.format("b,]]")
    assert expected_b in content

    expected_c = param_line_fmt.format("c,")
    assert expected_c in content

    expected_d = param_line_fmt.format("d[,")
    assert expected_d in content

    expected_e = param_line_fmt.format("e,")
    assert expected_e in content

    expected_f = param_line_fmt.format("f,]")
    assert expected_f in content

    expected_parameter_list_foo = "(\n{}{}{}{}{}{})".format(
        expected_a, expected_b, expected_c, expected_d, expected_e, expected_f,
    )
    assert expected_parameter_list_foo in content


def test_module_content_line_number(app):
    text = (".. py:module:: foo\n" +
            "\n" +
            "   Some link here: :ref:`abc`\n")
    doc = restructuredtext.parse(app, text)
    xrefs = list(doc.findall(condition=addnodes.pending_xref))
    assert len(xrefs) == 1
    source, line = docutils.utils.get_source_line(xrefs[0])
    assert 'index.rst' in source
    assert line == 3


@pytest.mark.sphinx(freshenv=True, confoverrides={'python_display_short_literal_types': True})
def test_short_literal_types(app):
    text = """\
.. py:function:: literal_ints(x: Literal[1, 2, 3] = 1) -> None
.. py:function:: literal_union(x: Union[Literal["a"], Literal["b"], Literal["c"]]) -> None
"""
    doctree = restructuredtext.parse(app, text)
    assert_node(doctree, (
        addnodes.index,
        [desc, (
            [desc_signature, (
                [desc_name, 'literal_ints'],
                [desc_parameterlist, (
                    [desc_parameter, (
                        [desc_sig_name, 'x'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, (
                            [desc_sig_literal_number, '1'],
                            desc_sig_space,
                            [desc_sig_punctuation, '|'],
                            desc_sig_space,
                            [desc_sig_literal_number, '2'],
                            desc_sig_space,
                            [desc_sig_punctuation, '|'],
                            desc_sig_space,
                            [desc_sig_literal_number, '3'],
                        )],
                        desc_sig_space,
                        [desc_sig_operator, '='],
                        desc_sig_space,
                        [nodes.inline, '1'],
                    )],
                )],
                [desc_returns, pending_xref, 'None'],
            )],
            [desc_content, ()],
        )],
        addnodes.index,
        [desc, (
            [desc_signature, (
                [desc_name, 'literal_union'],
                [desc_parameterlist, (
                    [desc_parameter, (
                        [desc_sig_name, 'x'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, (
                            [desc_sig_literal_string, "'a'"],
                            desc_sig_space,
                            [desc_sig_punctuation, '|'],
                            desc_sig_space,
                            [desc_sig_literal_string, "'b'"],
                            desc_sig_space,
                            [desc_sig_punctuation, '|'],
                            desc_sig_space,
                            [desc_sig_literal_string, "'c'"],
                        )],
                    )],
                )],
                [desc_returns, pending_xref, 'None'],
            )],
            [desc_content, ()],
        )],
    ))


def test_function_pep_695(app):
    text = """.. py:function:: func[\
        S,\
        T: int,\
        U: (int, str),\
        R: int | int,\
        A: int | Annotated[int, ctype("char")],\
        *V,\
        **P\
    ]
    """
    doctree = restructuredtext.parse(app, text)
    assert_node(doctree, (
        addnodes.index,
        [desc, (
            [desc_signature, (
                [desc_name, 'func'],
                [desc_type_parameter_list, (
                    [desc_type_parameter, ([desc_sig_name, 'S'])],
                    [desc_type_parameter, (
                        [desc_sig_name, 'T'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, ([pending_xref, 'int'])],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_name, 'U'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_punctuation, '('],
                        [desc_sig_name, (
                            [pending_xref, 'int'],
                            [desc_sig_punctuation, ','],
                            desc_sig_space,
                            [pending_xref, 'str'],
                        )],
                        [desc_sig_punctuation, ')'],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_name, 'R'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, (
                            [pending_xref, 'int'],
                            desc_sig_space,
                            [desc_sig_punctuation, '|'],
                            desc_sig_space,
                            [pending_xref, 'int'],
                        )],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_name, 'A'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, ([pending_xref, 'int | Annotated[int, ctype("char")]'])],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_operator, '*'],
                        [desc_sig_name, 'V'],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_operator, '**'],
                        [desc_sig_name, 'P'],
                    )],
                )],
                [desc_parameterlist, ()],
            )],
            [desc_content, ()],
        )],
    ))


def test_class_def_pep_695(app):
    # Non-concrete unbound generics are allowed at runtime but type checkers
    # should fail (https://peps.python.org/pep-0695/#type-parameter-scopes)
    text = """.. py:class:: Class[S: Sequence[T], T, KT, VT](Dict[KT, VT])"""
    doctree = restructuredtext.parse(app, text)
    assert_node(doctree, (
        addnodes.index,
        [desc, (
            [desc_signature, (
                [desc_annotation, ('class', desc_sig_space)],
                [desc_name, 'Class'],
                [desc_type_parameter_list, (
                    [desc_type_parameter, (
                        [desc_sig_name, 'S'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, (
                            [pending_xref, 'Sequence'],
                            [desc_sig_punctuation, '['],
                            [pending_xref, 'T'],
                            [desc_sig_punctuation, ']'],
                        )],
                    )],
                    [desc_type_parameter, ([desc_sig_name, 'T'])],
                    [desc_type_parameter, ([desc_sig_name, 'KT'])],
                    [desc_type_parameter, ([desc_sig_name, 'VT'])],
                )],
                [desc_parameterlist, ([desc_parameter, 'Dict[KT, VT]'])],
            )],
            [desc_content, ()],
        )],
    ))


def test_class_def_pep_696(app):
    # test default values for type variables without using PEP 696 AST parser
    text = """.. py:class:: Class[\
        T, KT, VT,\
        J: int,\
        K = list,\
        S: str = str,\
        L: (T, tuple[T, ...], collections.abc.Iterable[T]) = set[T],\
        Q: collections.abc.Mapping[KT, VT] = dict[KT, VT],\
        *V = *tuple[*Ts, bool],\
        **P = [int, Annotated[int, ValueRange(3, 10), ctype("char")]]\
    ](Other[T, KT, VT, J, S, L, Q, *V, **P])
    """
    doctree = restructuredtext.parse(app, text)
    assert_node(doctree, (
        addnodes.index,
        [desc, (
            [desc_signature, (
                [desc_annotation, ('class', desc_sig_space)],
                [desc_name, 'Class'],
                [desc_type_parameter_list, (
                    [desc_type_parameter, ([desc_sig_name, 'T'])],
                    [desc_type_parameter, ([desc_sig_name, 'KT'])],
                    [desc_type_parameter, ([desc_sig_name, 'VT'])],
                    # J: int
                    [desc_type_parameter, (
                        [desc_sig_name, 'J'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, ([pending_xref, 'int'])],
                    )],
                    # K = list
                    [desc_type_parameter, (
                        [desc_sig_name, 'K'],
                        desc_sig_space,
                        [desc_sig_operator, '='],
                        desc_sig_space,
                        [nodes.inline, 'list'],
                    )],
                    # S: str = str
                    [desc_type_parameter, (
                        [desc_sig_name, 'S'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, ([pending_xref, 'str'])],
                        desc_sig_space,
                        [desc_sig_operator, '='],
                        desc_sig_space,
                        [nodes.inline, 'str'],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_name, 'L'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_punctuation, '('],
                        [desc_sig_name, (
                            # T
                            [pending_xref, 'T'],
                            [desc_sig_punctuation, ','],
                            desc_sig_space,
                            # tuple[T, ...]
                            [pending_xref, 'tuple'],
                            [desc_sig_punctuation, '['],
                            [pending_xref, 'T'],
                            [desc_sig_punctuation, ','],
                            desc_sig_space,
                            [desc_sig_punctuation, '...'],
                            [desc_sig_punctuation, ']'],
                            [desc_sig_punctuation, ','],
                            desc_sig_space,
                            # collections.abc.Iterable[T]
                            [pending_xref, 'collections.abc.Iterable'],
                            [desc_sig_punctuation, '['],
                            [pending_xref, 'T'],
                            [desc_sig_punctuation, ']'],
                        )],
                        [desc_sig_punctuation, ')'],
                        desc_sig_space,
                        [desc_sig_operator, '='],
                        desc_sig_space,
                        [nodes.inline, 'set[T]'],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_name, 'Q'],
                        [desc_sig_punctuation, ':'],
                        desc_sig_space,
                        [desc_sig_name, (
                            [pending_xref, 'collections.abc.Mapping'],
                            [desc_sig_punctuation, '['],
                            [pending_xref, 'KT'],
                            [desc_sig_punctuation, ','],
                            desc_sig_space,
                            [pending_xref, 'VT'],
                            [desc_sig_punctuation, ']'],
                        )],
                        desc_sig_space,
                        [desc_sig_operator, '='],
                        desc_sig_space,
                        [nodes.inline, 'dict[KT, VT]'],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_operator, '*'],
                        [desc_sig_name, 'V'],
                        desc_sig_space,
                        [desc_sig_operator, '='],
                        desc_sig_space,
                        [nodes.inline, '*tuple[*Ts, bool]'],
                    )],
                    [desc_type_parameter, (
                        [desc_sig_operator, '**'],
                        [desc_sig_name, 'P'],
                        desc_sig_space,
                        [desc_sig_operator, '='],
                        desc_sig_space,
                        [nodes.inline, '[int, Annotated[int, ValueRange(3, 10), ctype("char")]]'],
                    )],
                )],
                [desc_parameterlist, (
                    [desc_parameter, 'Other[T, KT, VT, J, S, L, Q, *V, **P]'],
                )],
            )],
            [desc_content, ()],
        )],
    ))


@pytest.mark.parametrize(('tp_list', 'tptext'), [
    ('[T:int]', '[T: int]'),
    ('[T:*Ts]', '[T: *Ts]'),
    ('[T:int|(*Ts)]', '[T: int | (*Ts)]'),
    ('[T:(*Ts)|int]', '[T: (*Ts) | int]'),
    ('[T:(int|(*Ts))]', '[T: (int | (*Ts))]'),
    ('[T:((*Ts)|int)]', '[T: ((*Ts) | int)]'),
    ('[T:Annotated[int,ctype("char")]]', '[T: Annotated[int, ctype("char")]]'),
])
def test_pep_695_and_pep_696_whitespaces_in_bound(app, tp_list, tptext):
    text = f'.. py:function:: f{tp_list}()'
    doctree = restructuredtext.parse(app, text)
    assert doctree.astext() == f'\n\nf{tptext}()\n\n'


@pytest.mark.parametrize(('tp_list', 'tptext'), [
    ('[T:(int,str)]', '[T: (int, str)]'),
    ('[T:(int|str,*Ts)]', '[T: (int | str, *Ts)]'),
])
def test_pep_695_and_pep_696_whitespaces_in_constraints(app, tp_list, tptext):
    text = f'.. py:function:: f{tp_list}()'
    doctree = restructuredtext.parse(app, text)
    assert doctree.astext() == f'\n\nf{tptext}()\n\n'


@pytest.mark.parametrize(('tp_list', 'tptext'), [
    ('[T=int]', '[T = int]'),
    ('[T:int=int]', '[T: int = int]'),
    ('[*V=*Ts]', '[*V = *Ts]'),
    ('[*V=(*Ts)]', '[*V = (*Ts)]'),
    ('[*V=*tuple[str,...]]', '[*V = *tuple[str, ...]]'),
    ('[*V=*tuple[*Ts,...]]', '[*V = *tuple[*Ts, ...]]'),
    ('[*V=*tuple[int,*Ts]]', '[*V = *tuple[int, *Ts]]'),
    ('[*V=*tuple[*Ts,int]]', '[*V = *tuple[*Ts, int]]'),
    ('[**P=[int,*Ts]]', '[**P = [int, *Ts]]'),
    ('[**P=[int, int*3]]', '[**P = [int, int * 3]]'),
    ('[**P=[int, *Ts*3]]', '[**P = [int, *Ts * 3]]'),
    ('[**P=[int,A[int,ctype("char")]]]', '[**P = [int, A[int, ctype("char")]]]'),
])
def test_pep_695_and_pep_696_whitespaces_in_default(app, tp_list, tptext):
    text = f'.. py:function:: f{tp_list}()'
    doctree = restructuredtext.parse(app, text)
    assert doctree.astext() == f'\n\nf{tptext}()\n\n'
