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131 .IX Title "Tree::Simple::Visitor::LoadClassHierarchy 3"
132 .TH Tree::Simple::Visitor::LoadClassHierarchy 3 "2005-07-14" "perl v5.8.7" "User Contributed Perl Documentation"
134 Tree::Simple::Visitor::LoadClassHierarchy \- A Visitor for loading class hierarchies into a Tree::Simple hierarchy
136 .IX Header "SYNOPSIS"
138 \& use Tree::Simple::Visitor::LoadClassHierarchy;
142 \& # create an visitor
143 \& my $visitor = Tree::Simple::Visitor::LoadClassHierarchy\->new();
147 \& # set class as an instance, or
148 \& $visitor\->setClass($class);
152 \& # as a package name
153 \& $visitor\->setClass("My::Class");
157 \& # pass our visitor to the tree
158 \& $tree\->accept($visitor);
162 \& # the $tree now mirrors the inheritance hierarchy of the $class
165 .IX Header "DESCRIPTION"
166 This visitor will traverse a class's inheritance hierarchy (through the \f(CW@ISA\fR arrays) and create a Tree::Simple hierarchy which mirrors it.
171 There are no arguments to the constructor the object will be in its default state. You can use the \f(CW\*(C`setNodeFilter\*(C'\fR method to customize its behavior.
172 .IP "\fBincludeTrunk ($boolean)\fR" 4
173 .IX Item "includeTrunk ($boolean)"
174 Setting the \f(CW$boolean\fR value to true (\f(CW1\fR) will cause the node value of the \f(CW$tree\fR object passed into \f(CW\*(C`visit\*(C'\fR to be set with the root value found in the class heirarchy. Setting it to false (\f(CW0\fR), or not setting it, will result in the first value in the class heirarchy creating a new node level.
175 .IP "\fBincludeMethods ($boolean)\fR" 4
176 .IX Item "includeMethods ($boolean)"
177 Setting the \f(CW$boolean\fR value to true (\f(CW1\fR) will cause methods to be added as a children of the class node. Setting it to false (\f(CW0\fR), or not setting it, will result in this not happening.
179 \&\fB\s-1NOTE:\s0\fR Methods are sorted ascii-betically before they are added to the tree. This allows a more predictable heirarchy.
180 .IP "\fBsetClass ($class)\fR" 4
181 .IX Item "setClass ($class)"
182 The argument \f(CW$class\fR should be either a class name or an instance, it is then used as the root from which to determine the class hierarchy.
183 .IP "\fBsetNodeFilter ($filter_function)\fR" 4
184 .IX Item "setNodeFilter ($filter_function)"
185 This method accepts a \s-1CODE\s0 reference as its \f(CW$filter_function\fR argument and throws an exception if it is not a code reference. This code reference is used to filter the tree nodes as they are created, the \f(CW$filter_function\fR is passed the node value extracted from the hash prior to it being inserted into the tree being built. The \f(CW$filter_function\fR is expected to return the value desired for inclusion into the tree.
186 .IP "\fBvisit ($tree)\fR" 4
187 .IX Item "visit ($tree)"
188 This is the method that is used by Tree::Simple's \f(CW\*(C`accept\*(C'\fR method. It can also be used on its own, it requires the \f(CW$tree\fR argument to be a Tree::Simple object (or derived from a Tree::Simple object), and will throw and exception otherwise.
190 The \f(CW$tree\fR argument which is passed to \f(CW\*(C`visit\*(C'\fR must be a leaf node. This is because this Visitor will create all the sub-nodes for this tree. If the tree is not a leaf, an exception is thrown. We do not require the tree to be a root though, and this Visitor will not affect any nodes above the \f(CW$tree\fR argument.
193 .ie n .IP "Improve the ""includeMethods"" functionality" 4
194 .el .IP "Improve the \f(CWincludeMethods\fR functionality" 4
195 .IX Item "Improve the includeMethods functionality"
196 I am not sure the tree this creates is the optimal tree for this situation. It is sufficient for now, until I have more of an \fIactual\fR need for this functionality.
197 .ie n .IP "Add ""includeFullSymbolTable"" functionality" 4
198 .el .IP "Add \f(CWincludeFullSymbolTable\fR functionality" 4
199 .IX Item "Add includeFullSymbolTable functionality"
200 This would traverse the full symbol tables and produce a detailed tree of everything it finds. This takes a lot more work, and as I have no current need for it, it remains in the \s-1TO\s0 \s-1DO\s0 list.
203 None that I am aware of. Of course, if you find a bug, let me know, and I will be sure to fix it.
205 .IX Header "CODE COVERAGE"
206 See the \fB\s-1CODE\s0 \s-1COVERAGE\s0\fR section in Tree::Simple::VisitorFactory for more inforamtion.
208 .IX Header "SEE ALSO"
209 These Visitor classes are all subclasses of \fBTree::Simple::Visitor\fR, which can be found in the \fBTree::Simple\fR module, you should refer to that module for more information.
212 stevan little, <stevan@iinteractive.com>
213 .SH "COPYRIGHT AND LICENSE"
214 .IX Header "COPYRIGHT AND LICENSE"
215 Copyright 2004, 2005 by Infinity Interactive, Inc.
217 <http://www.iinteractive.com>
219 This library is free software; you can redistribute it and/or modify
220 it under the same terms as Perl itself.