Tests for SWIGTYPE& varin and varout typemaps

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4266 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/reference_global_vars.i

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+// Tests global reference variables:
+//  - all non const primitives
+//  - const and non const class
+
+%module reference_global_vars
+
+%inline %{
+class TestClass {
+public:
+    int num;
+    TestClass(int n = 0) : num(n) {}
+};
+%}
+
+// const class reference variable
+%{
+const TestClass& global_constTestClass = TestClass(33);
+%}
+%inline %{
+TestClass getconstTC() {
+    return global_constTestClass;
+}
+%}
+
+// Macro to help define similar functions
+%define ref(type,name)
+%{
+static type initial_value_##name;
+%}
+%inline %{
+static type &var_##name = initial_value_##name;
+type setref_##name(type &x) {
+    var_##name = x;
+    return var_##name;
+}
+type& createref_##name(type x) {
+    return *new type(x);
+}
+type value_##name(type &x) {
+    return x;
+}
+%}
+%enddef
+
+// primitive reference variables
+ref(bool,               bool);
+ref(char,               char);
+ref(unsigned char,      unsigned_char);
+ref(signed char,        signed_char);
+ref(short,              short);
+ref(unsigned short,     unsigned_short);
+ref(int,                int);
+ref(unsigned int,       unsigned_int);
+ref(long,               long);
+ref(unsigned long,      unsigned_long);
+ref(float,              float);
+ref(double,             double);
+ref(long long,          long_long);
+ref(unsigned long long, unsigned_long_long);
+
+// class reference variable
+ref(TestClass,          TestClass);
+