Fix mzscheme static variable wrappers

$argnum needs to be expanded in the 'varin' typemap which shares
code used by the 'in' typemap.
Setting the static variable is also a function call (argnum=1).

Added class examples - needs static variables to work
Test newly working test cases with this fix

6 files changed, 150 insertions, 0 deletions

diff --git a/Examples/mzscheme/check.list b/Examples/mzscheme/check.list
index f9e4f11c7..d2554c41c 100644
--- a/Examples/mzscheme/check.list
+++ b/Examples/mzscheme/check.list
@@ -1,4 +1,5 @@
 # see top-level Makefile.in
+class
 multimap
 simple
 std_vector
diff --git a/Examples/mzscheme/class/Makefile b/Examples/mzscheme/class/Makefile
new file mode 100644
index 000000000..ee92aa9f1
--- /dev/null
+++ b/Examples/mzscheme/class/Makefile
@@ -0,0 +1,18 @@
+TOP        = ../..
+SWIGEXE    = $(TOP)/../swig
+SWIG_LIB_DIR = $(TOP)/../$(TOP_BUILDDIR_TO_TOP_SRCDIR)Lib
+CXXSRCS    = example.cxx
+TARGET     = example
+INTERFACE  = example.i
+SWIGOPT    =
+
+check: build
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' mzscheme_run
+
+build:
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(CXXSRCDIR)' CXXSRCS='$(CXXSRCS)' \
+	SWIG_LIB_DIR='$(SWIG_LIB_DIR)' SWIGEXE='$(SWIGEXE)' \
+	SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' mzscheme_cpp
+
+clean:
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' mzscheme_clean
diff --git a/Examples/mzscheme/class/example.cxx b/Examples/mzscheme/class/example.cxx
new file mode 100644
index 000000000..046304519
--- /dev/null
+++ b/Examples/mzscheme/class/example.cxx
@@ -0,0 +1,28 @@
+/* File : example.cxx */
+
+#include "example.h"
+#define M_PI 3.14159265358979323846
+
+/* Move the shape to a new location */
+void Shape::move(double dx, double dy) {
+  x += dx;
+  y += dy;
+}
+
+int Shape::nshapes = 0;
+
+double Circle::area() {
+  return M_PI*radius*radius;
+}
+
+double Circle::perimeter() {
+  return 2*M_PI*radius;
+}
+
+double Square::area() {
+  return width*width;
+}
+
+double Square::perimeter() {
+  return 4*width;
+}
diff --git a/Examples/mzscheme/class/example.h b/Examples/mzscheme/class/example.h
new file mode 100644
index 000000000..0dff185b2
--- /dev/null
+++ b/Examples/mzscheme/class/example.h
@@ -0,0 +1,34 @@
+/* File : example.h */
+
+class Shape {
+public:
+  Shape() {
+    nshapes++;
+  }
+  virtual ~Shape() {
+    nshapes--;
+  }
+  double  x, y;
+  void    move(double dx, double dy);
+  virtual double area() = 0;
+  virtual double perimeter() = 0;
+  static  int nshapes;
+};
+
+class Circle : public Shape {
+private:
+  double radius;
+public:
+  Circle(double r) : radius(r) { }
+  virtual double area();
+  virtual double perimeter();
+};
+
+class Square : public Shape {
+private:
+  double width;
+public:
+  Square(double w) : width(w) { }
+  virtual double area();
+  virtual double perimeter();
+};
diff --git a/Examples/mzscheme/class/example.i b/Examples/mzscheme/class/example.i
new file mode 100644
index 000000000..fbdf7249f
--- /dev/null
+++ b/Examples/mzscheme/class/example.i
@@ -0,0 +1,9 @@
+/* File : example.i */
+%module example
+
+%{
+#include "example.h"
+%}
+
+/* Let's just grab the original header file here */
+%include "example.h"
diff --git a/Examples/mzscheme/class/runme.scm b/Examples/mzscheme/class/runme.scm
new file mode 100644
index 000000000..dea0b75bc
--- /dev/null
+++ b/Examples/mzscheme/class/runme.scm
@@ -0,0 +1,60 @@
+; file: runme.scm
+
+; This file illustrates the proxy class C++ interface generated
+; by SWIG.
+
+(load-extension "example.so")
+
+; Convenience wrapper around the display function
+; (which only accepts one argument at the time)
+
+(define (mdisplay-newline . args)
+  (for-each display args)
+  (newline))
+
+; ----- Object creation -----
+
+(mdisplay-newline "Creating some objects:")
+(define c (new-Circle 10))
+(mdisplay-newline "    Created circle " c)
+(define s (new-Square 10))
+(mdisplay-newline "    Created square " s)
+
+; ----- Access a static member -----
+
+(mdisplay-newline "\nA total of " (Shape-nshapes) " shapes were created")
+
+; ----- Member data access -----
+
+; Set the location of the object
+
+(Shape-x-set c 20)
+(Shape-y-set c 30)
+
+(Shape-x-set s -10)
+(Shape-y-set s 5)
+
+(mdisplay-newline "\nHere is their current position:")
+(mdisplay-newline "    Circle = (" (Shape-x-get c) "," (Shape-y-get c) ")")
+(mdisplay-newline "    Square = (" (Shape-x-get s) "," (Shape-y-get s) ")")
+
+; ----- Call some methods -----
+
+(mdisplay-newline "\nHere are some properties of the shapes:")
+(define (shape-props o)
+  (mdisplay-newline "   " o)
+  (mdisplay-newline "   area      = " (Shape-area o))
+  (mdisplay-newline "   perimeter = " (Shape-perimeter o)))
+(for-each  shape-props (list c s))
+
+(mdisplay-newline "\nGuess I'll clean up now")
+
+; Note: this invokes the virtual destructor
+(delete-Shape c)
+(delete-Shape s)
+
+(define s 3)
+(mdisplay-newline (Shape-nshapes) " shapes remain")
+(mdisplay-newline "Goodbye")
+
+(exit 0)