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87 lines
3.2 KiB
87 lines
3.2 KiB
/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* copyright (C) 2006 *
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* Umbrello UML Modeller Authors <uml-devel@uml.sf.net> *
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***************************************************************************/
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#ifndef PETALNODE__H
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#define PETALNODE__H
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#include <tqstring.h>
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#include <tqpair.h>
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#include <tqvaluelist.h>
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#include <tqstringlist.h>
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/**
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* Rose petal node - parse tree for model import
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*
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* A Rose petal node can be of type:
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* + object - initialArgs() contains the object type name and further
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* initial arguments which depend on the exact object type
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* - subordinate attributes are contained in attributes()
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* + list - initialArgs() contains the list type name
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* - list elements are contained in attributes() but the name
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* of each NameValue is empty.
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* + value - not represented as a node, instead the stripped down value
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* is saved in the value string of the NameValue.
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* Example: for the input
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* (value Text "This is some text")
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* the following is saved in the value string of the NameValue:
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* "This is some text"
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*
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* @author Oliver Kellogg
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* Bugs and comments to uml-devel@lists.sf.net or http://bugs.trinitydesktop.org
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*/
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class PetalNode {
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public:
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/**
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* Use `string' if it is not empty.
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* Use `node' if it is not NULL.
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* Either `string' is set, or `node', but never both.
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* (Perhaps this should be a union but that is ugly.)
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*/
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struct StringOrNode {
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TQString string;
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PetalNode *node;
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StringOrNode() { node = 0; }
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virtual ~StringOrNode() { }
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bool isEmpty() { return (string.isEmpty() && node == 0); }
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};
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typedef TQPair<TQString, StringOrNode> NameValue;
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typedef TQValueList<NameValue> NameValueList;
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enum NodeType { nt_object, nt_list };
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PetalNode(NodeType nt);
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virtual ~PetalNode();
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// getters
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NodeType type() const;
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TQStringList initialArgs() const; // name and other initial args
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TQString name() const; // convenience function: equal to initialArgs().first()
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NameValueList attributes() const;
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// setters
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//void setType(NodeType nt); see constructor
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void setInitialArgs(const TQStringList& args);
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void setAttributes(NameValueList vl);
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// utilities
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/**
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* Find an attribute by name.
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* @return The value of the attribute. StringOrNode::isEmpty() returns true
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* if the name could not be found.
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*/
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StringOrNode findAttribute(const TQString& name) const;
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private:
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NodeType m_type;
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TQStringList m_initialArgs;
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NameValueList m_attributes;
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};
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#endif
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