"""The JavaScript domain. """ from typing import Any, Dict, Iterator, List, Optional, Tuple, cast from docutils import nodes from docutils.nodes import Element, Node from docutils.parsers.rst import directives from sphinx import addnodes from sphinx.addnodes import desc_signature, pending_xref from sphinx.application import Sphinx from sphinx.builders import Builder from sphinx.directives import ObjectDescription from sphinx.domains import Domain, ObjType from sphinx.domains.python import _pseudo_parse_arglist from sphinx.environment import BuildEnvironment from sphinx.locale import _, __ from sphinx.roles import XRefRole from sphinx.util import logging from sphinx.util.docfields import Field, GroupedField, TypedField from sphinx.util.docutils import SphinxDirective from sphinx.util.nodes import make_id, make_refnode from sphinx.util.typing import OptionSpec logger = logging.getLogger(__name__) class JSObject(ObjectDescription[Tuple[str, str]]): """ Description of a JavaScript object. """ #: If set to ``True`` this object is callable and a `desc_parameterlist` is #: added has_arguments = False #: If ``allow_nesting`` is ``True``, the object prefixes will be accumulated #: based on directive nesting allow_nesting = False option_spec: OptionSpec = { 'noindex': directives.flag, 'noindexentry': directives.flag, } def get_display_prefix(self) -> List[Node]: #: what is displayed right before the documentation entry return [] def handle_signature(self, sig: str, signode: desc_signature) -> Tuple[str, str]: """Breaks down construct signatures Parses out prefix and argument list from construct definition. The namespace and class will be determined by the nesting of domain directives. """ sig = sig.strip() if '(' in sig and sig[-1:] == ')': member, arglist = sig.split('(', 1) member = member.strip() arglist = arglist[:-1].strip() else: member = sig arglist = None # If construct is nested, prefix the current prefix prefix = self.env.ref_context.get('js:object', None) mod_name = self.env.ref_context.get('js:module') name = member try: member_prefix, member_name = member.rsplit('.', 1) except ValueError: member_name = name member_prefix = '' finally: name = member_name if prefix and member_prefix: prefix = '.'.join([prefix, member_prefix]) elif prefix is None and member_prefix: prefix = member_prefix fullname = name if prefix: fullname = '.'.join([prefix, name]) signode['module'] = mod_name signode['object'] = prefix signode['fullname'] = fullname display_prefix = self.get_display_prefix() if display_prefix: signode += addnodes.desc_annotation('', '', *display_prefix) actual_prefix = None if prefix: actual_prefix = prefix elif mod_name: actual_prefix = mod_name if actual_prefix: addName = addnodes.desc_addname('', '') for p in actual_prefix.split('.'): addName += addnodes.desc_sig_name(p, p) addName += addnodes.desc_sig_punctuation('.', '.') signode += addName signode += addnodes.desc_name('', '', addnodes.desc_sig_name(name, name)) if self.has_arguments: if not arglist: signode += addnodes.desc_parameterlist() else: _pseudo_parse_arglist(signode, arglist) return fullname, prefix def add_target_and_index(self, name_obj: Tuple[str, str], sig: str, signode: desc_signature) -> None: mod_name = self.env.ref_context.get('js:module') fullname = (mod_name + '.' if mod_name else '') + name_obj[0] node_id = make_id(self.env, self.state.document, '', fullname) signode['ids'].append(node_id) # Assign old styled node_id not to break old hyperlinks (if possible) # Note: Will be removed in Sphinx-5.0 (RemovedInSphinx50Warning) old_node_id = self.make_old_id(fullname) if old_node_id not in self.state.document.ids and old_node_id not in signode['ids']: signode['ids'].append(old_node_id) self.state.document.note_explicit_target(signode) domain = cast(JavaScriptDomain, self.env.get_domain('js')) domain.note_object(fullname, self.objtype, node_id, location=signode) if 'noindexentry' not in self.options: indextext = self.get_index_text(mod_name, name_obj) if indextext: self.indexnode['entries'].append(('single', indextext, node_id, '', None)) def get_index_text(self, objectname: str, name_obj: Tuple[str, str]) -> str: name, obj = name_obj if self.objtype == 'function': if not obj: return _('%s() (built-in function)') % name return _('%s() (%s method)') % (name, obj) elif self.objtype == 'class': return _('%s() (class)') % name elif self.objtype == 'data': return _('%s (global variable or constant)') % name elif self.objtype == 'attribute': return _('%s (%s attribute)') % (name, obj) return '' def before_content(self) -> None: """Handle object nesting before content :py:class:`JSObject` represents JavaScript language constructs. For constructs that are nestable, this method will build up a stack of the nesting hierarchy so that it can be later de-nested correctly, in :py:meth:`after_content`. For constructs that aren't nestable, the stack is bypassed, and instead only the most recent object is tracked. This object prefix name will be removed with :py:meth:`after_content`. The following keys are used in ``self.env.ref_context``: js:objects Stores the object prefix history. With each nested element, we add the object prefix to this list. When we exit that object's nesting level, :py:meth:`after_content` is triggered and the prefix is removed from the end of the list. js:object Current object prefix. This should generally reflect the last element in the prefix history """ prefix = None if self.names: (obj_name, obj_name_prefix) = self.names.pop() prefix = obj_name_prefix.strip('.') if obj_name_prefix else None if self.allow_nesting: prefix = obj_name if prefix: self.env.ref_context['js:object'] = prefix if self.allow_nesting: objects = self.env.ref_context.setdefault('js:objects', []) objects.append(prefix) def after_content(self) -> None: """Handle object de-nesting after content If this class is a nestable object, removing the last nested class prefix ends further nesting in the object. If this class is not a nestable object, the list of classes should not be altered as we didn't affect the nesting levels in :py:meth:`before_content`. """ objects = self.env.ref_context.setdefault('js:objects', []) if self.allow_nesting: try: objects.pop() except IndexError: pass self.env.ref_context['js:object'] = (objects[-1] if len(objects) > 0 else None) def make_old_id(self, fullname: str) -> str: """Generate old styled node_id for JS objects. .. note:: Old Styled node_id was used until Sphinx-3.0. This will be removed in Sphinx-5.0. """ return fullname.replace('$', '_S_') class JSCallable(JSObject): """Description of a JavaScript function, method or constructor.""" has_arguments = True doc_field_types = [ TypedField('arguments', label=_('Arguments'), names=('argument', 'arg', 'parameter', 'param'), typerolename='func', typenames=('paramtype', 'type')), GroupedField('errors', label=_('Throws'), rolename='func', names=('throws', ), can_collapse=True), Field('returnvalue', label=_('Returns'), has_arg=False, names=('returns', 'return')), Field('returntype', label=_('Return type'), has_arg=False, names=('rtype',)), ] class JSConstructor(JSCallable): """Like a callable but with a different prefix.""" allow_nesting = True def get_display_prefix(self) -> List[Node]: return [addnodes.desc_sig_keyword('class', 'class'), addnodes.desc_sig_space()] class JSModule(SphinxDirective): """ Directive to mark description of a new JavaScript module. This directive specifies the module name that will be used by objects that follow this directive. Options ------- noindex If the ``noindex`` option is specified, no linkable elements will be created, and the module won't be added to the global module index. This is useful for splitting up the module definition across multiple sections or files. :param mod_name: Module name """ has_content = False required_arguments = 1 optional_arguments = 0 final_argument_whitespace = False option_spec: OptionSpec = { 'noindex': directives.flag } def run(self) -> List[Node]: mod_name = self.arguments[0].strip() self.env.ref_context['js:module'] = mod_name noindex = 'noindex' in self.options ret: List[Node] = [] if not noindex: domain = cast(JavaScriptDomain, self.env.get_domain('js')) node_id = make_id(self.env, self.state.document, 'module', mod_name) domain.note_module(mod_name, node_id) # Make a duplicate entry in 'objects' to facilitate searching for # the module in JavaScriptDomain.find_obj() domain.note_object(mod_name, 'module', node_id, location=(self.env.docname, self.lineno)) target = nodes.target('', '', ids=[node_id], ismod=True) # Assign old styled node_id not to break old hyperlinks (if possible) # Note: Will be removed in Sphinx-5.0 (RemovedInSphinx50Warning) old_node_id = self.make_old_id(mod_name) if old_node_id not in self.state.document.ids and old_node_id not in target['ids']: target['ids'].append(old_node_id) self.state.document.note_explicit_target(target) ret.append(target) indextext = _('%s (module)') % mod_name inode = addnodes.index(entries=[('single', indextext, node_id, '', None)]) ret.append(inode) return ret def make_old_id(self, modname: str) -> str: """Generate old styled node_id for JS modules. .. note:: Old Styled node_id was used until Sphinx-3.0. This will be removed in Sphinx-5.0. """ return 'module-' + modname class JSXRefRole(XRefRole): def process_link(self, env: BuildEnvironment, refnode: Element, has_explicit_title: bool, title: str, target: str) -> Tuple[str, str]: # basically what sphinx.domains.python.PyXRefRole does refnode['js:object'] = env.ref_context.get('js:object') refnode['js:module'] = env.ref_context.get('js:module') if not has_explicit_title: title = title.lstrip('.') target = target.lstrip('~') if title[0:1] == '~': title = title[1:] dot = title.rfind('.') if dot != -1: title = title[dot + 1:] if target[0:1] == '.': target = target[1:] refnode['refspecific'] = True return title, target class JavaScriptDomain(Domain): """JavaScript language domain.""" name = 'js' label = 'JavaScript' # if you add a new object type make sure to edit JSObject.get_index_string object_types = { 'function': ObjType(_('function'), 'func'), 'method': ObjType(_('method'), 'meth'), 'class': ObjType(_('class'), 'class'), 'data': ObjType(_('data'), 'data'), 'attribute': ObjType(_('attribute'), 'attr'), 'module': ObjType(_('module'), 'mod'), } directives = { 'function': JSCallable, 'method': JSCallable, 'class': JSConstructor, 'data': JSObject, 'attribute': JSObject, 'module': JSModule, } roles = { 'func': JSXRefRole(fix_parens=True), 'meth': JSXRefRole(fix_parens=True), 'class': JSXRefRole(fix_parens=True), 'data': JSXRefRole(), 'attr': JSXRefRole(), 'mod': JSXRefRole(), } initial_data: Dict[str, Dict[str, Tuple[str, str]]] = { 'objects': {}, # fullname -> docname, node_id, objtype 'modules': {}, # modname -> docname, node_id } @property def objects(self) -> Dict[str, Tuple[str, str, str]]: return self.data.setdefault('objects', {}) # fullname -> docname, node_id, objtype def note_object(self, fullname: str, objtype: str, node_id: str, location: Any = None) -> None: if fullname in self.objects: docname = self.objects[fullname][0] logger.warning(__('duplicate %s description of %s, other %s in %s'), objtype, fullname, objtype, docname, location=location) self.objects[fullname] = (self.env.docname, node_id, objtype) @property def modules(self) -> Dict[str, Tuple[str, str]]: return self.data.setdefault('modules', {}) # modname -> docname, node_id def note_module(self, modname: str, node_id: str) -> None: self.modules[modname] = (self.env.docname, node_id) def clear_doc(self, docname: str) -> None: for fullname, (pkg_docname, _node_id, _l) in list(self.objects.items()): if pkg_docname == docname: del self.objects[fullname] for modname, (pkg_docname, _node_id) in list(self.modules.items()): if pkg_docname == docname: del self.modules[modname] def merge_domaindata(self, docnames: List[str], otherdata: Dict) -> None: # XXX check duplicates for fullname, (fn, node_id, objtype) in otherdata['objects'].items(): if fn in docnames: self.objects[fullname] = (fn, node_id, objtype) for mod_name, (pkg_docname, node_id) in otherdata['modules'].items(): if pkg_docname in docnames: self.modules[mod_name] = (pkg_docname, node_id) def find_obj(self, env: BuildEnvironment, mod_name: str, prefix: str, name: str, typ: str, searchorder: int = 0) -> Tuple[str, Tuple[str, str, str]]: if name[-2:] == '()': name = name[:-2] searches = [] if mod_name and prefix: searches.append('.'.join([mod_name, prefix, name])) if mod_name: searches.append('.'.join([mod_name, name])) if prefix: searches.append('.'.join([prefix, name])) searches.append(name) if searchorder == 0: searches.reverse() newname = None for search_name in searches: if search_name in self.objects: newname = search_name return newname, self.objects.get(newname) def resolve_xref(self, env: BuildEnvironment, fromdocname: str, builder: Builder, typ: str, target: str, node: pending_xref, contnode: Element ) -> Optional[Element]: mod_name = node.get('js:module') prefix = node.get('js:object') searchorder = 1 if node.hasattr('refspecific') else 0 name, obj = self.find_obj(env, mod_name, prefix, target, typ, searchorder) if not obj: return None return make_refnode(builder, fromdocname, obj[0], obj[1], contnode, name) def resolve_any_xref(self, env: BuildEnvironment, fromdocname: str, builder: Builder, target: str, node: pending_xref, contnode: Element ) -> List[Tuple[str, Element]]: mod_name = node.get('js:module') prefix = node.get('js:object') name, obj = self.find_obj(env, mod_name, prefix, target, None, 1) if not obj: return [] return [('js:' + self.role_for_objtype(obj[2]), make_refnode(builder, fromdocname, obj[0], obj[1], contnode, name))] def get_objects(self) -> Iterator[Tuple[str, str, str, str, str, int]]: for refname, (docname, node_id, typ) in list(self.objects.items()): yield refname, refname, typ, docname, node_id, 1 def get_full_qualified_name(self, node: Element) -> str: modname = node.get('js:module') prefix = node.get('js:object') target = node.get('reftarget') if target is None: return None else: return '.'.join(filter(None, [modname, prefix, target])) def setup(app: Sphinx) -> Dict[str, Any]: app.add_domain(JavaScriptDomain) return { 'version': 'builtin', 'env_version': 2, 'parallel_read_safe': True, 'parallel_write_safe': True, }