*/
void clearValue ();
+ /**
+ * Compare two property trees. The property trees are equal if: 1)
+ * They have no children, and have the same type and the values are
+ * equal, or 2) have the same number of children, and the
+ * corresponding children in each tree are equal. "corresponding"
+ * means have the same name and index.
+ *
+ * Attributes, removed children, and aliases aren't considered.
+ */
+ static bool compare (const SGPropertyNode& lhs, const SGPropertyNode& rhs);
protected:
private:
- // Get the raw value
+ // Get the raw value
bool get_bool () const;
int get_int () const;
long get_long () const;
double get_double () const;
const char * get_string () const;
- // Set the raw value
+ // Set the raw value
bool set_bool (bool value);
bool set_int (int value);
bool set_long (long value);
bool _tied;
int _attr;
- // The right kind of pointer...
+ // The right kind of pointer...
union {
SGPropertyNode * alias;
SGRaw* val;
/**
- * Register/unregister node that links to this node in its path cache.
- */
+ * Register/unregister node that links to this node in its path cache.
+ */
void add_linked_node (hash_table * node) { _linkedNodes.push_back(node); }
bool remove_linked_node (hash_table * node);
template<typename SplitItr>
friend SGPropertyNode* find_node_aux(SGPropertyNode * current, SplitItr& itr,
bool create, int last_index);
+ // For boost
+ friend size_t hash_value(const SGPropertyNode& node);
};
// Convenience functions for use in templates
return parent->getNode(name, true);
}
}
+
+// For boost::hash
+size_t hash_value(const SGPropertyNode& node);
+
+// Helper comparison and hash functions for common cases
+
+namespace simgear
+{
+namespace props
+{
+struct Compare
+{
+ bool operator()(const SGPropertyNode* lhs, const SGPropertyNode* rhs) const
+ {
+ return SGPropertyNode::compare(*lhs, *rhs);
+ }
+ bool operator()(SGPropertyNode_ptr lhs, const SGPropertyNode* rhs) const
+ {
+ return SGPropertyNode::compare(*lhs, *rhs);
+ }
+ bool operator()(const SGPropertyNode* lhs, SGPropertyNode_ptr rhs) const
+ {
+ return SGPropertyNode::compare(*lhs, *rhs);
+ }
+ bool operator()(SGPropertyNode_ptr lhs, SGPropertyNode_ptr rhs) const
+ {
+ return SGPropertyNode::compare(*lhs, *rhs);
+ }
+};
+
+struct Hash
+{
+ size_t operator()(const SGPropertyNode* node) const
+ {
+ return hash_value(*node);
+ }
+ size_t operator()(SGPropertyNode_ptr node) const
+ {
+ return hash_value(*node);
+ }
+};
+}
+}
#endif // __PROPS_HXX
// end of props.hxx