Thomas Geymayer
21e2a769eb
- Fix overwriting of parent node if PropertyObject::node() is called for a non-existing node. - Prevent implicit conversion from const char* and SGPropertyNode*
106 lines
2.3 KiB
C++
106 lines
2.3 KiB
C++
// Copyright (C) 2010 James Turner - zakalawe@mac.com
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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#ifdef HAVE_CONFIG_H
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# include "simgear_config.h"
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#endif
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#include "propertyObject.hxx"
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#include <simgear/structure/exception.hxx>
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namespace simgear
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{
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SGPropertyNode* static_defaultRoot = NULL;
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void PropertyObjectBase::setDefaultRoot(SGPropertyNode* aRoot)
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{
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static_defaultRoot = aRoot;
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}
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PropertyObjectBase::PropertyObjectBase() :
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_path(NULL),
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_prop(NULL)
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{
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}
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PropertyObjectBase::PropertyObjectBase(const PropertyObjectBase& aOther) :
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_path(aOther._path),
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_prop(aOther._prop)
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{
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}
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PropertyObjectBase::PropertyObjectBase(const char* aChild) :
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_path(aChild),
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_prop(NULL)
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{
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}
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PropertyObjectBase::PropertyObjectBase(SGPropertyNode* aNode, const char* aChild) :
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_path(aChild),
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_prop(aNode)
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{
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}
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SGPropertyNode* PropertyObjectBase::node(bool aCreate) const
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{
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if (_path == NULL) { // already resolved
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return _prop;
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}
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SGPropertyNode *r = _prop ? _prop : static_defaultRoot,
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*prop = r->getNode(_path, aCreate);
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if( prop )
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{
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// resolve worked, we will cache from now on, so clear _path and cache prop
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_path = NULL;
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_prop = prop;
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}
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return prop;
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}
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SGPropertyNode* PropertyObjectBase::getOrThrow() const
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{
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SGPropertyNode* n = node(false);
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if (!n) {
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std::string path;
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if (_prop) {
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path = _prop->getPath();
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if (_path) {
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path += '/';
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}
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}
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if (_path) {
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path += _path;
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}
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throw sg_exception("Unknown property:" + path);
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}
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return n;
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}
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} // of namespace simgear
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