From 49e349c494e0134570a158e56ba8b5b9f26b94f6 Mon Sep 17 00:00:00 2001
From: Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
Date: Mon, 9 Sep 2013 13:46:44 -0700
Subject: added test.cpp file to tests

---
 tests/simple/test.cpp | 298 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 298 insertions(+)
 create mode 100644 tests/simple/test.cpp

(limited to 'tests')

diff --git a/tests/simple/test.cpp b/tests/simple/test.cpp
new file mode 100644
index 0000000..dbae91e
--- /dev/null
+++ b/tests/simple/test.cpp
@@ -0,0 +1,298 @@
+#include <iostream>
+#include <functional>
+#include <sstream>
+#include <vector>
+#include <map>
+#include <stdlib.h>
+
+using namespace std;
+
+/**
+ *  Example function that adds numbers
+ *  @param	a	A number
+ *  @param	b	A different number
+ * 	@return		Sum of both parameters
+ */
+int my_plus(int a, int b)
+{
+	cout << "my_plus(" << a << ", " << b << ")" << endl;
+
+	return a + b;
+}
+
+/**
+ *  Another example function that concatenates strings
+ *  @param	a	A text
+ *  @param	b	A different text
+ *  @return		Concattenation
+ */
+const string my_concat(const string &a, const string &b)
+{
+	cout << "my_concat(" << a << ", " << b << ")" << endl;
+	
+	return a + b;
+}
+
+/**
+ *  Value class that can automatically convert objects between many
+ *  different types
+ */ 
+class Value
+{
+private:
+	/**
+	 *  Internal representation
+	 *	@var _value
+	 */
+	string _value;
+
+public:
+	/**
+	 *  Constructor based on string
+	 *  @param	text
+	 */
+	Value(const string &text) : _value(text) {}
+
+	/**
+	 *  Constructor based on string
+	 *  @param	text
+	 */
+	Value(const char *text) : _value(text) {}
+	
+	/**
+	 *  Constructor based on int
+	 *  @param	integer
+	 */
+	Value(int value)
+	{
+		ostringstream s;
+		s << value;
+		_value = s.str();
+	}
+	
+	/**
+	 *  Destructor
+	 */
+	virtual ~Value() {}
+	
+	/**
+	 *  Cast to integer
+	 *  @return		Numeric representation
+	 */
+	operator int ()
+	{
+		return atoi(_value.c_str());
+	}
+
+	/**
+	 *  Cast to string
+	 *  @return		String representation
+	 */
+	operator const string& ()
+	{
+		return _value;
+	}
+};
+
+/**
+ *  Simple wrapper around a function
+ */
+class Function
+{
+private:
+	/**
+	 *  The actual function
+	 * 
+	 * 	Note: 	there must be a much smarter way to achieve the same thing,
+	 * 			we just want to have a single member that holds the function
+	 * 
+	 *  @var	_function
+	 */
+	union F {
+		// union members
+		function<Value()> r0;
+		function<Value(Value&)> r1;
+		function<Value(Value&,Value&)> r2;
+		function<void()> v0;
+		function<void(Value&)> v1;
+		function<void(Value&,Value&)> v2;
+		
+		// constructors
+		F() {}
+		F(function<Value()> &f) { r0 = f; }
+		F(function<Value(Value&)> &f) { r1 = f; }
+		F(function<Value(Value&,Value&)> &f) { r2 = f; }
+		F(function<void()> &f) { v0 = f; }
+		F(function<void(Value&)> &f) { v1 = f; }
+		F(function<void(Value&,Value&)> &f) { v2 = f; }
+		
+		// destructor
+		~F();
+		
+		// assignment operator
+//		F &operator=(function<Value()> &f) { r0 = f; return *this; }
+//		F &operator=(function<Value(Value&)> &f) { r1 = f; return *this; }
+//		F &operator=(function<Value(Value&,Value&)> &f) { r2 = f; return *this; }
+		
+	} _function;
+	
+	/**
+	 *  Is the object in a valid state
+	 *  @var	bool
+	 */
+	bool _valid;
+	
+	/**
+	 *  The number of arguments that the function required
+	 *  @var	_argc
+	 */
+	int _argc;
+	
+	/**
+	 *  Does the function return something?
+	 *  @var	_return;
+	 */
+	bool _return;
+	
+public:
+	/**
+	 *  Contructor
+	 *  @param	f
+	 */
+	Function(function<Value()> &f) : _function(f)
+	{
+		_argc = 0;
+		_return = true;
+		_valid = true;
+	}
+	
+	/**
+	 *  Contructor
+	 *  @param	f
+	 */
+	Function(function<Value(Value&)> &f) : _function(f)
+	{
+		_argc = 1;
+		_return = true;
+	}
+
+	/**
+	 *  Contructor
+	 *  @param	f
+	 */
+	Function(function<Value(Value&,Value&)> &f) : _function(f)
+	{
+		_argc = 2;
+		_return = true;
+	}
+	
+	/**
+	 *  Move constructor
+	 *  @param	f
+	 */
+	Function(const Function &&f)
+	{
+		// copy params
+		_argc = f._argc;
+		_return = f._return;
+		
+		switch (_argc) {
+		case 0: _function.r0 = f._function.r0; break;
+		case 1: _function.r1 = f._function.r1; break;
+		case 2: _function.r2 = f._function.r2; break;
+		}
+	} 
+	
+	/**
+	 *  Destructor
+	 */
+	virtual ~Function() {}
+	
+	/**
+	 *  Operator to call the function
+	 *  @param	args
+	 */
+	void operator()(vector<Value> args)
+	{
+		switch (_argc) {
+		case 0:	_function.r0();
+		case 1: _function.r1(args[0]);
+		case 2: _function.r2(args[0], args[1]);
+		}
+	}
+};
+
+/**
+ *  Class that stores pointers to functions
+ */
+class Functions
+{
+private:
+	/**
+	 *  Map of functions
+	 * 	@var map
+	 */
+	map<string,Function> _functions;
+
+public:
+	/**
+	 *  Constructor
+	 */
+	Functions() {}
+	
+	/**
+	 *  Destructor
+	 */
+	virtual ~Functions() {}
+	
+	/**
+	 *  Add a function
+	 * 	@param	name		The function name
+	 * 	@param	func		The function to call
+	 */
+	void add(const string &name, function<Value(Value&,Value&)> f)
+	{
+		_functions.insert(pair<string,Function>(name, Function(f)));
+	}
+	
+	/**
+	 *  Call the functions
+	 *  @param	args
+	 */
+	Value operator()(vector<Value> args)
+	{
+		for (auto it = _functions.begin(); it != _functions.end(); it++)
+		{
+			it->second(args);
+		}
+		
+		return Value(123);
+	}
+
+};
+
+/**
+ *  Main function
+ * 	@param	argc
+ *  @param	argv
+ */
+int main(int argc, char *argv[])
+{
+	// create a vector of arguments
+	vector<Value> arguments;
+	
+	// fill the arguments
+	for (int i=1; i<argc-1; i++) arguments.push_back(argv[i]);
+	
+	// now register all functions
+	Functions functions;
+	functions.add("plus", my_plus);
+	functions.add("concat", my_concat);
+	
+	// call all functions
+	functions(arguments);
+	
+	// done
+	return 0;
+}
+
-- 
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