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File: Synopsis/Formatter/ClassTree.py
1| # $Id: ClassTree.py,v 1.6 2003/02/01 05:38:17 chalky Exp $
2| #
3| # This file is a part of Synopsis.
4| # Copyright (C) 2000, 2001 Stephen Davies
5| # Copyright (C) 2000, 2001 Stefan Seefeld
6| #
7| # Synopsis is free software; you can redistribute it and/or modify it
8| # under the terms of the GNU General Public License as published by
9| # the Free Software Foundation; either version 2 of the License, or
10| # (at your option) any later version.
11| #
12| # This program is distributed in the hope that it will be useful,
13| # but WITHOUT ANY WARRANTY; without even the implied warranty of
14| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15| # General Public License for more details.
16| #
17| # You should have received a copy of the GNU General Public License
18| # along with this program; if not, write to the Free Software
19| # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20| # 02111-1307, USA.
21| #
22| # $Log: ClassTree.py,v $
23| # Revision 1.6 2003/02/01 05:38:17 chalky
24| # Include Unknown parents in the class tree, so they appear in the inheritance
25| # graphs
26| #
27| # Revision 1.5 2002/09/20 10:37:07 chalky
28| # Fix a crash bug
29| #
30| # Revision 1.4 2002/01/09 11:43:41 chalky
31| # Inheritance pics
32| #
33| # Revision 1.3 2001/07/04 08:18:04 uid20151
34| # Comments
35| #
36| # Revision 1.2 2001/04/06 02:37:08 chalky
37| # Add all superclasses to classes list, so that Unknown superclasses are in
38| # graphs too (and hence, if they are roots, make sure we dont miss subgraphs!)
39| #
40| # Revision 1.1 2001/02/05 05:53:04 chalky
41| # Moved from HTML/core.py. Added graphs()
42| #
43| #
44|
45| """Contains the utility class ClassTree, for creating inheritance trees."""
46|
47| # Synopsis modules
48| from Synopsis.Core import AST, Type
49|
50|
51| def sort(list):
52| "Utility func to sort and return the given list"
53| list.sort()
54| return list
55|
56|
57|
58| class ClassTree(AST.Visitor):
59| """Maintains a tree of classes directed by inheritance. This object always
60| exists in HTML, since it is used for other things such as printing class bases."""
61| # TODO - only create if needed (if Info tells us to)
62| def __init__(self):
63| self.__superclasses = {}
64| self.__subclasses = {}
65| self.__classes = []
66| # Graph stuffs:
67| self.__buckets = [] # List of buckets, each a list of classnames
68| self.__processed = {} # Map of processed class names
69|
70| def add_inheritance(self, supername, subname):
71| """Adds an edge to the graph. Supername and subname are the scoped
72| names of the two classes involved in the edge, and are copied before
73| being stored."""
74| supername, subname = tuple(supername), tuple(subname)
75| self.add_class(supername)
76| if not self.__subclasses.has_key(supername):
77| subs = self.__subclasses[supername] = []
78| else:
79| subs = self.__subclasses[supername]
80| if subname not in subs:
81| subs.append(subname)
82| if not self.__superclasses.has_key(subname):
83| sups = self.__superclasses[subname] = []
84| else:
85| sups = self.__superclasses[subname]
86| if supername not in sups:
87| sups.append(supername)
88|
89| def subclasses(self, classname):
90| """Returns a sorted list of all classes derived from the given
91| class"""
92| classname = tuple(classname)
93| if self.__subclasses.has_key(classname):
94| return sort(self.__subclasses[classname])
95| return []
96| def superclasses(self, classname):
97| """Returns a sorted list of all classes the given class derives
98| from. The classes are returned as scoped names, which you may use to
99| lookup the class declarations in the 'types' dictionary if you need
100| to."""
101| classname = tuple(classname)
102| if self.__superclasses.has_key(classname):
103| return sort(self.__superclasses[classname])
104| return []
105|
106| def classes(self):
107| """Returns a sorted list of all class names"""
108| return sort(self.__classes)
109| def add_class(self, name):
110| """Adds a class to the list of classes by name"""
111| name = tuple(name)
112| if name not in self.__classes:
113| self.__classes.append(tuple(name))
114|
115| def _is_root(self, name): return not self.__superclasses.has_key(name)
116| def _is_leaf(self, name): return not self.__subclasses.has_key(name)
117| def roots(self):
118| """Returns a list of classes that have no superclasses"""
119| return filter(self._is_root, self.classes())
120|
121| #
122| # Graph methods
123| #
124| def graphs(self):
125| """Returns a list of graphs. Each graph is just a list of connected
126| classes."""
127| self._make_graphs()
128| return self.__buckets
129|
130| def leaves(self, graph):
131| """Returns a list of leaves in the given graph. A leaf is a class with
132| no subclasses"""
133| return filter(self._is_leaf, graph)
134|
135| def _make_graphs(self):
136| for root in self.roots():
137| if self.__processed.has_key(root):
138| # Already processed this class
139| continue
140| bucket = [] ; self.__buckets.append(bucket)
141| classes = [root]
142| while len(classes):
143| name = classes.pop()
144| if self.__processed.has_key(name):
145| # Already processed this class
146| continue
147| # Add to bucket
148| bucket.append(name)
149| self.__processed[name] = None
150| # Add super- and sub-classes
151| classes.extend( self.superclasses(name) )
152| classes.extend( self.subclasses(name) )
153| #
154| # AST Visitor
155| #
156|
157| def visitAST(self, ast):
158| for decl in ast.declarations():
159| decl.accept(self)
160| def visitScope(self, scope):
161| for decl in scope.declarations():
162| decl.accept(self)
163| def visitClass(self, clas):
164| """Adds this class and all edges to the lists"""
165| name = clas.name()
166| self.add_class(name)
167| for inheritance in clas.parents():
168| parent = inheritance.parent()
169| if hasattr(parent, 'declaration'):
170| self.add_inheritance(parent.declaration().name(), name)
171| elif isinstance(parent, Type.Parametrized) and parent.template():
172| self.add_inheritance(parent.template().name(), name)
173| elif isinstance(parent, Type.Unknown):
174| self.add_inheritance(parent.link(), name)
175| for decl in clas.declarations():
176| decl.accept(self)
177|
178|