/usr/lib/python3/dist-packages/sphinx/domains/std.py is in python3-sphinx 1.4.9-2.
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"""
sphinx.domains.std
~~~~~~~~~~~~~~~~~~
The standard domain.
:copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
import unicodedata
from six import iteritems
from docutils import nodes
from docutils.nodes import fully_normalize_name
from docutils.parsers.rst import directives
from docutils.statemachine import ViewList
from sphinx import addnodes
from sphinx.roles import XRefRole
from sphinx.locale import l_, _
from sphinx.domains import Domain, ObjType
from sphinx.directives import ObjectDescription
from sphinx.util import ws_re
from sphinx.util.nodes import clean_astext, make_refnode
from sphinx.util.compat import Directive
# RE for option descriptions
option_desc_re = re.compile(r'((?:/|--|-|\+)?[-?@#_a-zA-Z0-9]+)(=?\s*.*)')
# RE for grammar tokens
token_re = re.compile('`(\w+)`', re.U)
class GenericObject(ObjectDescription):
"""
A generic x-ref directive registered with Sphinx.add_object_type().
"""
indextemplate = ''
parse_node = None
def handle_signature(self, sig, signode):
if self.parse_node:
name = self.parse_node(self.env, sig, signode)
else:
signode.clear()
signode += addnodes.desc_name(sig, sig)
# normalize whitespace like XRefRole does
name = ws_re.sub('', sig)
return name
def add_target_and_index(self, name, sig, signode):
targetname = '%s-%s' % (self.objtype, name)
signode['ids'].append(targetname)
self.state.document.note_explicit_target(signode)
if self.indextemplate:
colon = self.indextemplate.find(':')
if colon != -1:
indextype = self.indextemplate[:colon].strip()
indexentry = self.indextemplate[colon+1:].strip() % (name,)
else:
indextype = 'single'
indexentry = self.indextemplate % (name,)
self.indexnode['entries'].append((indextype, indexentry,
targetname, '', None))
self.env.domaindata['std']['objects'][self.objtype, name] = \
self.env.docname, targetname
class EnvVar(GenericObject):
indextemplate = l_('environment variable; %s')
class EnvVarXRefRole(XRefRole):
"""
Cross-referencing role for environment variables (adds an index entry).
"""
def result_nodes(self, document, env, node, is_ref):
if not is_ref:
return [node], []
varname = node['reftarget']
tgtid = 'index-%s' % env.new_serialno('index')
indexnode = addnodes.index()
indexnode['entries'] = [
('single', varname, tgtid, '', None),
('single', _('environment variable; %s') % varname, tgtid, '', None)
]
targetnode = nodes.target('', '', ids=[tgtid])
document.note_explicit_target(targetnode)
return [indexnode, targetnode, node], []
class Target(Directive):
"""
Generic target for user-defined cross-reference types.
"""
indextemplate = ''
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
option_spec = {}
def run(self):
env = self.state.document.settings.env
# normalize whitespace in fullname like XRefRole does
fullname = ws_re.sub(' ', self.arguments[0].strip())
targetname = '%s-%s' % (self.name, fullname)
node = nodes.target('', '', ids=[targetname])
self.state.document.note_explicit_target(node)
ret = [node]
if self.indextemplate:
indexentry = self.indextemplate % (fullname,)
indextype = 'single'
colon = indexentry.find(':')
if colon != -1:
indextype = indexentry[:colon].strip()
indexentry = indexentry[colon+1:].strip()
inode = addnodes.index(entries=[(indextype, indexentry,
targetname, '', None)])
ret.insert(0, inode)
name = self.name
if ':' in self.name:
_, name = self.name.split(':', 1)
env.domaindata['std']['objects'][name, fullname] = \
env.docname, targetname
return ret
class Cmdoption(ObjectDescription):
"""
Description of a command-line option (.. option).
"""
def handle_signature(self, sig, signode):
"""Transform an option description into RST nodes."""
count = 0
firstname = ''
for potential_option in sig.split(', '):
potential_option = potential_option.strip()
m = option_desc_re.match(potential_option)
if not m:
self.env.warn(
self.env.docname,
'Malformed option description %r, should '
'look like "opt", "-opt args", "--opt args", '
'"/opt args" or "+opt args"' % potential_option,
self.lineno)
continue
optname, args = m.groups()
if count:
signode += addnodes.desc_addname(', ', ', ')
signode += addnodes.desc_name(optname, optname)
signode += addnodes.desc_addname(args, args)
if not count:
firstname = optname
signode['allnames'] = [optname]
else:
signode['allnames'].append(optname)
count += 1
if not firstname:
raise ValueError
return firstname
def add_target_and_index(self, firstname, sig, signode):
currprogram = self.env.ref_context.get('std:program')
for optname in signode.get('allnames', []):
targetname = optname.replace('/', '-')
if not targetname.startswith('-'):
targetname = '-arg-' + targetname
if currprogram:
targetname = '-' + currprogram + targetname
targetname = 'cmdoption' + targetname
signode['ids'].append(targetname)
self.state.document.note_explicit_target(signode)
self.env.domaindata['std']['progoptions'][currprogram, optname] = \
self.env.docname, targetname
# create only one index entry for the whole option
if optname == firstname:
self.indexnode['entries'].append(
('pair', _('%scommand line option; %s') %
((currprogram and currprogram + ' ' or ''), sig),
targetname, '', None))
class Program(Directive):
"""
Directive to name the program for which options are documented.
"""
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
option_spec = {}
def run(self):
env = self.state.document.settings.env
program = ws_re.sub('-', self.arguments[0].strip())
if program == 'None':
env.ref_context.pop('std:program', None)
else:
env.ref_context['std:program'] = program
return []
class OptionXRefRole(XRefRole):
def process_link(self, env, refnode, has_explicit_title, title, target):
refnode['std:program'] = env.ref_context.get('std:program')
return title, target
def split_term_classifiers(line):
# split line into a term and classifiers. if no classifier, None is used..
parts = re.split(' +: +', line) + [None]
return parts
def make_glossary_term(env, textnodes, index_key, source, lineno, new_id=None):
# get a text-only representation of the term and register it
# as a cross-reference target
term = nodes.term('', '', *textnodes)
term.source = source
term.line = lineno
gloss_entries = env.temp_data.setdefault('gloss_entries', set())
objects = env.domaindata['std']['objects']
termtext = term.astext()
if new_id is None:
new_id = nodes.make_id('term-' + termtext)
if new_id in gloss_entries:
new_id = 'term-' + str(len(gloss_entries))
gloss_entries.add(new_id)
objects['term', termtext.lower()] = env.docname, new_id
# add an index entry too
indexnode = addnodes.index()
indexnode['entries'] = [('single', termtext, new_id, 'main', index_key)]
indexnode.source, indexnode.line = term.source, term.line
term.append(indexnode)
term['ids'].append(new_id)
term['names'].append(new_id)
return term
class Glossary(Directive):
"""
Directive to create a glossary with cross-reference targets for :term:
roles.
"""
has_content = True
required_arguments = 0
optional_arguments = 0
final_argument_whitespace = False
option_spec = {
'sorted': directives.flag,
}
def run(self):
env = self.state.document.settings.env
node = addnodes.glossary()
node.document = self.state.document
# This directive implements a custom format of the reST definition list
# that allows multiple lines of terms before the definition. This is
# easy to parse since we know that the contents of the glossary *must
# be* a definition list.
# first, collect single entries
entries = []
in_definition = True
was_empty = True
messages = []
for line, (source, lineno) in zip(self.content, self.content.items):
# empty line -> add to last definition
if not line:
if in_definition and entries:
entries[-1][1].append('', source, lineno)
was_empty = True
continue
# unindented line -> a term
if line and not line[0].isspace():
# enable comments
if line.startswith('.. '):
continue
# first term of definition
if in_definition:
if not was_empty:
messages.append(self.state.reporter.system_message(
2, 'glossary term must be preceded by empty line',
source=source, line=lineno))
entries.append(([(line, source, lineno)], ViewList()))
in_definition = False
# second term and following
else:
if was_empty:
messages.append(self.state.reporter.system_message(
2, 'glossary terms must not be separated by empty '
'lines', source=source, line=lineno))
if entries:
entries[-1][0].append((line, source, lineno))
else:
messages.append(self.state.reporter.system_message(
2, 'glossary seems to be misformatted, check '
'indentation', source=source, line=lineno))
else:
if not in_definition:
# first line of definition, determines indentation
in_definition = True
indent_len = len(line) - len(line.lstrip())
if entries:
entries[-1][1].append(line[indent_len:], source, lineno)
else:
messages.append(self.state.reporter.system_message(
2, 'glossary seems to be misformatted, check '
'indentation', source=source, line=lineno))
was_empty = False
# now, parse all the entries into a big definition list
items = []
for terms, definition in entries:
termtexts = []
termnodes = []
system_messages = []
for line, source, lineno in terms:
parts = split_term_classifiers(line)
# parse the term with inline markup
# classifiers (parts[1:]) will not be shown on doctree
textnodes, sysmsg = self.state.inline_text(parts[0], lineno)
# use first classifier as a index key
term = make_glossary_term(env, textnodes, parts[1], source, lineno)
term.rawsource = line
system_messages.extend(sysmsg)
termtexts.append(term.astext())
termnodes.append(term)
termnodes.extend(system_messages)
defnode = nodes.definition()
if definition:
self.state.nested_parse(definition, definition.items[0][1],
defnode)
termnodes.append(defnode)
items.append((termtexts,
nodes.definition_list_item('', *termnodes)))
if 'sorted' in self.options:
items.sort(key=lambda x:
unicodedata.normalize('NFD', x[0][0].lower()))
dlist = nodes.definition_list()
dlist['classes'].append('glossary')
dlist.extend(item[1] for item in items)
node += dlist
return messages + [node]
def token_xrefs(text):
retnodes = []
pos = 0
for m in token_re.finditer(text):
if m.start() > pos:
txt = text[pos:m.start()]
retnodes.append(nodes.Text(txt, txt))
refnode = addnodes.pending_xref(
m.group(1), reftype='token', refdomain='std', reftarget=m.group(1))
refnode += nodes.literal(m.group(1), m.group(1), classes=['xref'])
retnodes.append(refnode)
pos = m.end()
if pos < len(text):
retnodes.append(nodes.Text(text[pos:], text[pos:]))
return retnodes
class ProductionList(Directive):
"""
Directive to list grammar productions.
"""
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
option_spec = {}
def run(self):
env = self.state.document.settings.env
objects = env.domaindata['std']['objects']
node = addnodes.productionlist()
messages = []
i = 0
for rule in self.arguments[0].split('\n'):
if i == 0 and ':' not in rule:
# production group
continue
i += 1
try:
name, tokens = rule.split(':', 1)
except ValueError:
break
subnode = addnodes.production()
subnode['tokenname'] = name.strip()
if subnode['tokenname']:
idname = 'grammar-token-%s' % subnode['tokenname']
if idname not in self.state.document.ids:
subnode['ids'].append(idname)
self.state.document.note_implicit_target(subnode, subnode)
objects['token', subnode['tokenname']] = env.docname, idname
subnode.extend(token_xrefs(tokens))
node.append(subnode)
return [node] + messages
class StandardDomain(Domain):
"""
Domain for all objects that don't fit into another domain or are added
via the application interface.
"""
name = 'std'
label = 'Default'
object_types = {
'term': ObjType(l_('glossary term'), 'term', searchprio=-1),
'token': ObjType(l_('grammar token'), 'token', searchprio=-1),
'label': ObjType(l_('reference label'), 'ref', 'keyword',
searchprio=-1),
'envvar': ObjType(l_('environment variable'), 'envvar'),
'cmdoption': ObjType(l_('program option'), 'option'),
}
directives = {
'program': Program,
'cmdoption': Cmdoption, # old name for backwards compatibility
'option': Cmdoption,
'envvar': EnvVar,
'glossary': Glossary,
'productionlist': ProductionList,
}
roles = {
'option': OptionXRefRole(warn_dangling=True),
'envvar': EnvVarXRefRole(),
# links to tokens in grammar productions
'token': XRefRole(),
# links to terms in glossary
'term': XRefRole(lowercase=True, innernodeclass=nodes.inline,
warn_dangling=True),
# links to headings or arbitrary labels
'ref': XRefRole(lowercase=True, innernodeclass=nodes.inline,
warn_dangling=True),
# links to labels of numbered figures, tables and code-blocks
'numref': XRefRole(lowercase=True,
warn_dangling=True),
# links to labels, without a different title
'keyword': XRefRole(warn_dangling=True),
}
initial_data = {
'progoptions': {}, # (program, name) -> docname, labelid
'objects': {}, # (type, name) -> docname, labelid
'labels': { # labelname -> docname, labelid, sectionname
'genindex': ('genindex', '', l_('Index')),
'modindex': ('py-modindex', '', l_('Module Index')),
'search': ('search', '', l_('Search Page')),
},
'anonlabels': { # labelname -> docname, labelid
'genindex': ('genindex', ''),
'modindex': ('py-modindex', ''),
'search': ('search', ''),
},
}
dangling_warnings = {
'term': 'term not in glossary: %(target)s',
'ref': 'undefined label: %(target)s (if the link has no caption '
'the label must precede a section header)',
'numref': 'undefined label: %(target)s',
'keyword': 'unknown keyword: %(target)s',
'option': 'unknown option: %(target)s',
}
enumerable_nodes = { # node_class -> (figtype, title_getter)
nodes.figure: ('figure', None),
nodes.table: ('table', None),
nodes.container: ('code-block', None),
}
def clear_doc(self, docname):
for key, (fn, _l) in list(self.data['progoptions'].items()):
if fn == docname:
del self.data['progoptions'][key]
for key, (fn, _l) in list(self.data['objects'].items()):
if fn == docname:
del self.data['objects'][key]
for key, (fn, _l, _l) in list(self.data['labels'].items()):
if fn == docname:
del self.data['labels'][key]
for key, (fn, _l) in list(self.data['anonlabels'].items()):
if fn == docname:
del self.data['anonlabels'][key]
def merge_domaindata(self, docnames, otherdata):
# XXX duplicates?
for key, data in otherdata['progoptions'].items():
if data[0] in docnames:
self.data['progoptions'][key] = data
for key, data in otherdata['objects'].items():
if data[0] in docnames:
self.data['objects'][key] = data
for key, data in otherdata['labels'].items():
if data[0] in docnames:
self.data['labels'][key] = data
for key, data in otherdata['anonlabels'].items():
if data[0] in docnames:
self.data['anonlabels'][key] = data
def process_doc(self, env, docname, document):
labels, anonlabels = self.data['labels'], self.data['anonlabels']
for name, explicit in iteritems(document.nametypes):
if not explicit:
continue
labelid = document.nameids[name]
if labelid is None:
continue
node = document.ids[labelid]
if node.tagname == 'target' and 'refid' in node: # indirect hyperlink targets
node = document.ids.get(node['refid'])
labelid = node['names'][0]
if name.isdigit() or 'refuri' in node or \
node.tagname.startswith('desc_'):
# ignore footnote labels, labels automatically generated from a
# link and object descriptions
continue
if name in labels:
env.warn_node('duplicate label %s, ' % name + 'other instance '
'in ' + env.doc2path(labels[name][0]), node)
anonlabels[name] = docname, labelid
if node.tagname == 'section':
sectname = clean_astext(node[0]) # node[0] == title node
elif self.is_enumerable_node(node):
sectname = self.get_numfig_title(node)
if not sectname:
continue
elif node.traverse(addnodes.toctree):
n = node.traverse(addnodes.toctree)[0]
if n.get('caption'):
sectname = n['caption']
else:
continue
else:
# anonymous-only labels
continue
labels[name] = docname, labelid, sectname
def build_reference_node(self, fromdocname, builder, docname, labelid,
sectname, rolename, **options):
nodeclass = options.pop('nodeclass', nodes.reference)
newnode = nodeclass('', '', internal=True, **options)
innernode = nodes.inline(sectname, sectname)
if innernode.get('classes') is not None:
innernode['classes'].append('std')
innernode['classes'].append('std-' + rolename)
if docname == fromdocname:
newnode['refid'] = labelid
else:
# set more info in contnode; in case the
# get_relative_uri call raises NoUri,
# the builder will then have to resolve these
contnode = addnodes.pending_xref('')
contnode['refdocname'] = docname
contnode['refsectname'] = sectname
newnode['refuri'] = builder.get_relative_uri(
fromdocname, docname)
if labelid:
newnode['refuri'] += '#' + labelid
newnode.append(innernode)
return newnode
def resolve_xref(self, env, fromdocname, builder,
typ, target, node, contnode):
if typ == 'ref':
if node['refexplicit']:
# reference to anonymous label; the reference uses
# the supplied link caption
docname, labelid = self.data['anonlabels'].get(target, ('', ''))
sectname = node.astext()
else:
# reference to named label; the final node will
# contain the section name after the label
docname, labelid, sectname = self.data['labels'].get(target,
('', '', ''))
if not docname:
return None
return self.build_reference_node(fromdocname, builder,
docname, labelid, sectname, 'ref')
elif typ == 'numref':
docname, labelid = self.data['anonlabels'].get(target, ('', ''))
if not docname:
return None
if env.config.numfig is False:
env.warn(fromdocname, 'numfig is disabled. :numref: is ignored.',
lineno=node.line)
return contnode
target_node = env.get_doctree(docname).ids.get(labelid)
figtype = self.get_figtype(target_node)
if figtype is None:
return None
try:
figure_id = target_node['ids'][0]
fignumber = env.toc_fignumbers[docname][figtype][figure_id]
except (KeyError, IndexError):
# target_node is found, but fignumber is not assigned.
# Maybe it is defined in orphaned document.
env.warn(fromdocname, "no number is assigned for %s: %s" % (figtype, labelid),
lineno=node.line)
return contnode
title = contnode.astext()
if target == fully_normalize_name(title):
title = env.config.numfig_format.get(figtype, '')
try:
newtitle = title % '.'.join(map(str, fignumber))
except TypeError:
env.warn(fromdocname, 'invalid numfig_format: %s' % title,
lineno=node.line)
return None
return self.build_reference_node(fromdocname, builder,
docname, labelid, newtitle, 'numref',
nodeclass=addnodes.number_reference,
title=title)
elif typ == 'keyword':
# keywords are oddballs: they are referenced by named labels
docname, labelid, _ = self.data['labels'].get(target, ('', '', ''))
if not docname:
return None
return make_refnode(builder, fromdocname, docname,
labelid, contnode)
elif typ == 'option':
progname = node.get('std:program')
target = target.strip()
docname, labelid = self.data['progoptions'].get((progname, target), ('', ''))
if not docname:
commands = []
while ws_re.search(target):
subcommand, target = ws_re.split(target, 1)
commands.append(subcommand)
progname = "-".join(commands)
docname, labelid = self.data['progoptions'].get((progname, target),
('', ''))
if docname:
break
else:
return None
return make_refnode(builder, fromdocname, docname,
labelid, contnode)
else:
objtypes = self.objtypes_for_role(typ) or []
for objtype in objtypes:
if (objtype, target) in self.data['objects']:
docname, labelid = self.data['objects'][objtype, target]
break
else:
docname, labelid = '', ''
if not docname:
return None
return make_refnode(builder, fromdocname, docname,
labelid, contnode)
def resolve_any_xref(self, env, fromdocname, builder, target,
node, contnode):
results = []
ltarget = target.lower() # :ref: lowercases its target automatically
for role in ('ref', 'option'): # do not try "keyword"
res = self.resolve_xref(env, fromdocname, builder, role,
ltarget if role == 'ref' else target,
node, contnode)
if res:
results.append(('std:' + role, res))
# all others
for objtype in self.object_types:
key = (objtype, target)
if objtype == 'term':
key = (objtype, ltarget)
if key in self.data['objects']:
docname, labelid = self.data['objects'][key]
results.append(('std:' + self.role_for_objtype(objtype),
make_refnode(builder, fromdocname, docname,
labelid, contnode)))
return results
def get_objects(self):
# handle the special 'doc' reference here
for doc in self.env.all_docs:
yield (doc, clean_astext(self.env.titles[doc]), 'doc', doc, '', -1)
for (prog, option), info in iteritems(self.data['progoptions']):
yield (option, option, 'option', info[0], info[1], 1)
for (type, name), info in iteritems(self.data['objects']):
yield (name, name, type, info[0], info[1],
self.object_types[type].attrs['searchprio'])
for name, info in iteritems(self.data['labels']):
yield (name, info[2], 'label', info[0], info[1], -1)
# add anonymous-only labels as well
non_anon_labels = set(self.data['labels'])
for name, info in iteritems(self.data['anonlabels']):
if name not in non_anon_labels:
yield (name, name, 'label', info[0], info[1], -1)
def get_type_name(self, type, primary=False):
# never prepend "Default"
return type.lname
def is_enumerable_node(self, node):
return node.__class__ in self.enumerable_nodes
def get_numfig_title(self, node):
"""Get the title of enumerable nodes to refer them using its title"""
if self.is_enumerable_node(node):
_, title_getter = self.enumerable_nodes.get(node.__class__, (None, None))
if title_getter:
return title_getter(node)
else:
for subnode in node:
if subnode.tagname in ('caption', 'title'):
return clean_astext(subnode)
return None
def get_figtype(self, node):
"""Get figure type of nodes."""
def has_child(node, cls):
return any(isinstance(child, cls) for child in node)
if isinstance(node, nodes.container):
if node.get('literal_block') and has_child(node, nodes.literal_block):
return 'code-block'
else:
return None
else:
figtype, _ = self.enumerable_nodes.get(node.__class__, (None, None))
return figtype
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