New example to test free_functions. Makes use of tracking objects functionality.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@7522 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/ruby/free_function/example.h

@@ -0,0 +1,49 @@
+#ifndef _EXAMPLE_H_
+#define _EXAMPLE_H_
+
+#include <vector>
+#include <string>
+
+class Animal
+{
+protected:
+	std::string name_;
+public:
+	// Construct an animal with a name
+	Animal(const char* name);
+
+	// Destruct an animal
+	~Animal();
+
+	// Return the animal's name
+	const char* get_name() const;
+};
+	
+class Zoo
+{
+private:
+	typedef std::vector<Animal*> AnimalsType;
+	typedef AnimalsType::iterator IterType;
+protected:
+	AnimalsType animals;
+public:
+	Zoo();
+	~Zoo();	
+
+	/* Create a new animal */
+	static Animal* create_animal(const char* name);
+
+	/* Add a new animal to the zoo */
+	void add_animal(Animal* animal);
+	
+	/* Remove an animal from the zoo */
+	Animal* remove_animal(size_t i);
+
+	/* Return the number of animals in the zoo */
+	size_t get_num_animals() const;
+	
+	/* Return a pointer to the ith animal */
+	Animal* get_animal(size_t i) const;
+};
+
+#endif /*_EXAMPLE_H_*/