mirror of
https://github.com/PiBrewing/craftbeerpi4.git
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270 lines
8.8 KiB
Python
270 lines
8.8 KiB
Python
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# Copyright (c) 2006, 2008-2010, 2012-2014 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
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# Copyright (c) 2014-2018, 2020 Claudiu Popa <pcmanticore@gmail.com>
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# Copyright (c) 2014 Brett Cannon <brett@python.org>
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# Copyright (c) 2014 Arun Persaud <arun@nubati.net>
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# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
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# Copyright (c) 2018 ssolanki <sushobhitsolanki@gmail.com>
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# Copyright (c) 2019 Pierre Sassoulas <pierre.sassoulas@gmail.com>
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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
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"""diagram objects
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"""
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import astroid
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from pylint.checkers.utils import decorated_with_property
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from pylint.pyreverse.utils import FilterMixIn, is_interface
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class Figure:
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"""base class for counter handling"""
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class Relationship(Figure):
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"""a relation ship from an object in the diagram to another
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"""
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def __init__(self, from_object, to_object, relation_type, name=None):
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Figure.__init__(self)
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self.from_object = from_object
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self.to_object = to_object
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self.type = relation_type
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self.name = name
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class DiagramEntity(Figure):
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"""a diagram object, i.e. a label associated to an astroid node
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"""
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def __init__(self, title="No name", node=None):
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Figure.__init__(self)
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self.title = title
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self.node = node
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class ClassDiagram(Figure, FilterMixIn):
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"""main class diagram handling
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"""
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TYPE = "class"
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def __init__(self, title, mode):
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FilterMixIn.__init__(self, mode)
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Figure.__init__(self)
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self.title = title
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self.objects = []
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self.relationships = {}
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self._nodes = {}
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self.depends = []
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def get_relationships(self, role):
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# sorted to get predictable (hence testable) results
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return sorted(
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self.relationships.get(role, ()),
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key=lambda x: (x.from_object.fig_id, x.to_object.fig_id),
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)
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def add_relationship(self, from_object, to_object, relation_type, name=None):
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"""create a relation ship
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"""
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rel = Relationship(from_object, to_object, relation_type, name)
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self.relationships.setdefault(relation_type, []).append(rel)
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def get_relationship(self, from_object, relation_type):
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"""return a relation ship or None
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"""
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for rel in self.relationships.get(relation_type, ()):
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if rel.from_object is from_object:
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return rel
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raise KeyError(relation_type)
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def get_attrs(self, node):
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"""return visible attributes, possibly with class name"""
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attrs = []
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properties = [
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(n, m)
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for n, m in node.items()
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if isinstance(m, astroid.FunctionDef) and decorated_with_property(m)
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]
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for node_name, associated_nodes in (
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list(node.instance_attrs_type.items())
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+ list(node.locals_type.items())
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+ properties
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):
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if not self.show_attr(node_name):
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continue
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names = self.class_names(associated_nodes)
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if names:
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node_name = "%s : %s" % (node_name, ", ".join(names))
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attrs.append(node_name)
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return sorted(attrs)
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def get_methods(self, node):
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"""return visible methods"""
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methods = [
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m
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for m in node.values()
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if isinstance(m, astroid.FunctionDef)
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and not decorated_with_property(m)
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and self.show_attr(m.name)
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]
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return sorted(methods, key=lambda n: n.name)
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def add_object(self, title, node):
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"""create a diagram object
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"""
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assert node not in self._nodes
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ent = DiagramEntity(title, node)
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self._nodes[node] = ent
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self.objects.append(ent)
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def class_names(self, nodes):
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"""return class names if needed in diagram"""
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names = []
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for node in nodes:
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if isinstance(node, astroid.Instance):
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node = node._proxied
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if (
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isinstance(node, astroid.ClassDef)
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and hasattr(node, "name")
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and not self.has_node(node)
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):
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if node.name not in names:
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node_name = node.name
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names.append(node_name)
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return names
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def nodes(self):
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"""return the list of underlying nodes
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"""
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return self._nodes.keys()
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def has_node(self, node):
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"""return true if the given node is included in the diagram
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"""
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return node in self._nodes
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def object_from_node(self, node):
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"""return the diagram object mapped to node
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"""
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return self._nodes[node]
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def classes(self):
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"""return all class nodes in the diagram"""
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return [o for o in self.objects if isinstance(o.node, astroid.ClassDef)]
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def classe(self, name):
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"""return a class by its name, raise KeyError if not found
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"""
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for klass in self.classes():
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if klass.node.name == name:
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return klass
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raise KeyError(name)
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def extract_relationships(self):
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"""extract relation ships between nodes in the diagram
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"""
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for obj in self.classes():
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node = obj.node
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obj.attrs = self.get_attrs(node)
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obj.methods = self.get_methods(node)
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# shape
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if is_interface(node):
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obj.shape = "interface"
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else:
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obj.shape = "class"
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# inheritance link
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for par_node in node.ancestors(recurs=False):
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try:
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par_obj = self.object_from_node(par_node)
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self.add_relationship(obj, par_obj, "specialization")
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except KeyError:
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continue
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# implements link
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for impl_node in node.implements:
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try:
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impl_obj = self.object_from_node(impl_node)
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self.add_relationship(obj, impl_obj, "implements")
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except KeyError:
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continue
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# associations link
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for name, values in list(node.instance_attrs_type.items()) + list(
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node.locals_type.items()
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):
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for value in values:
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if value is astroid.Uninferable:
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continue
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if isinstance(value, astroid.Instance):
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value = value._proxied
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try:
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associated_obj = self.object_from_node(value)
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self.add_relationship(associated_obj, obj, "association", name)
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except KeyError:
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continue
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class PackageDiagram(ClassDiagram):
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"""package diagram handling
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"""
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TYPE = "package"
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def modules(self):
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"""return all module nodes in the diagram"""
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return [o for o in self.objects if isinstance(o.node, astroid.Module)]
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def module(self, name):
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"""return a module by its name, raise KeyError if not found
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"""
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for mod in self.modules():
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if mod.node.name == name:
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return mod
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raise KeyError(name)
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def get_module(self, name, node):
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"""return a module by its name, looking also for relative imports;
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raise KeyError if not found
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"""
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for mod in self.modules():
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mod_name = mod.node.name
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if mod_name == name:
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return mod
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# search for fullname of relative import modules
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package = node.root().name
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if mod_name == "%s.%s" % (package, name):
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return mod
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if mod_name == "%s.%s" % (package.rsplit(".", 1)[0], name):
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return mod
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raise KeyError(name)
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def add_from_depend(self, node, from_module):
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"""add dependencies created by from-imports
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"""
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mod_name = node.root().name
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obj = self.module(mod_name)
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if from_module not in obj.node.depends:
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obj.node.depends.append(from_module)
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def extract_relationships(self):
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"""extract relation ships between nodes in the diagram
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"""
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ClassDiagram.extract_relationships(self)
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for obj in self.classes():
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# ownership
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try:
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mod = self.object_from_node(obj.node.root())
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self.add_relationship(obj, mod, "ownership")
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except KeyError:
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continue
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for obj in self.modules():
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obj.shape = "package"
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# dependencies
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for dep_name in obj.node.depends:
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try:
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dep = self.get_module(dep_name, obj.node)
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except KeyError:
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continue
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self.add_relationship(obj, dep, "depends")
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