update swig on windows

winx64/bin/swigwin-4.0.0/Examples/test-suite/aggregate.i

@@ -0,0 +1,37 @@
+/* This file tests a few new contract features.
+   First it checks to make sure the constant aggregation macro
+   %aggregate_check() works.  This is defined in swig.swg.
+
+   Next, it checks to make sure a simple contract works.
+   To support contracts, you need to add a macro to the runtime.
+   For Python, it looks like this:
+
+#define SWIG_contract_assert(expr, msg)  if (!(expr)) { PyErr_SetString(PyExc_RuntimeError, (char *) msg #expr ); goto fail; } else
+
+   Note: It is used like this:
+   SWIG_contract_assert(x == 1, "Some kind of error message");
+
+   Note: Contracts are still experimental.  The runtime interface may
+   change in future versions.   
+   */
+
+%module aggregate
+
+%include <exception.i>
+%aggregate_check(int, check_direction, UP, DOWN, LEFT, RIGHT)
+
+%contract move(int x) {
+require:
+   check_direction(x);
+}
+
+%inline %{
+#define UP    1
+#define DOWN  2
+#define LEFT  3
+#define RIGHT 4
+
+int move(int direction) {
+    return direction;
+}
+%}