4 files changed, 107 insertions, 0 deletions
diff --git a/Examples/python/operator/Makefile b/Examples/python/operator/Makefile
new file mode 100644
index 0000000..fe38975
--- /dev/null
+++ b/Examples/python/operator/Makefile
@@ -0,0 +1,22 @@
+TOP        = ../..
+SWIG       = $(TOP)/../preinst-swig
+CXXSRCS    = 
+TARGET     = example
+INTERFACE  = example.i
+LIBS       = -lm
+SWIGOPT    = 
+
+all::
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' python_cpp
+
+static::
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	TARGET='mypython' INTERFACE='$(INTERFACE)' python_cpp_static
+
+clean::
+	$(MAKE) -f $(TOP)/Makefile python_clean
+	rm -f $(TARGET).py
+
+check: all
+	$(MAKE) -f $(TOP)/Makefile python_run
diff --git a/Examples/python/operator/example.h b/Examples/python/operator/example.h
new file mode 100644
index 0000000..4da6a23
--- /dev/null
+++ b/Examples/python/operator/example.h
@@ -0,0 +1,36 @@
+/* File : example.h */
+#include <math.h>
+
+class Complex {
+private:
+  double rpart, ipart;
+public:
+  Complex(double r = 0, double i = 0) : rpart(r), ipart(i) { }
+  Complex(const Complex &c) : rpart(c.rpart), ipart(c.ipart) { }
+  Complex &operator=(const Complex &c) {
+    rpart = c.rpart;
+    ipart = c.ipart;
+    return *this;
+  }
+  Complex operator+(const Complex &c) const {
+    return Complex(rpart+c.rpart, ipart+c.ipart);
+  }
+  Complex operator-(const Complex &c) const {
+    return Complex(rpart-c.rpart, ipart-c.ipart);
+  }
+  Complex operator*(const Complex &c) const {
+    return Complex(rpart*c.rpart - ipart*c.ipart,
+		   rpart*c.ipart + c.rpart*ipart);
+  }
+  Complex operator-() const {
+    return Complex(-rpart, -ipart);
+  }
+  
+  double re() const { return rpart; }
+  double im() const { return ipart; }
+};
+
+
+
+
+  
diff --git a/Examples/python/operator/example.i b/Examples/python/operator/example.i
new file mode 100644
index 0000000..e37e76b
--- /dev/null
+++ b/Examples/python/operator/example.i
@@ -0,0 +1,28 @@
+/* File : example.i */
+%module example
+#pragma SWIG nowarn=SWIGWARN_IGNORE_OPERATOR_EQ
+%{
+#include "example.h"
+%}
+
+/* This header file is a little tough to handle because it has overloaded
+   operators and constructors.  We're going to try and deal with that here */
+
+/* This turns the copy constructor in a function ComplexCopy() that can
+   be called */
+
+%rename(ComplexCopy) Complex::Complex(Complex const &);
+
+/* Now grab the original header file */
+%include "example.h"
+
+/* An output method that turns a complex into a short string */
+%extend Complex {
+   char *__str__() {
+       static char temp[512];
+       sprintf(temp,"(%g,%g)", $self->re(), $self->im());
+       return temp;
+   }
+};
+
+
diff --git a/Examples/python/operator/runme.py b/Examples/python/operator/runme.py
new file mode 100644
index 0000000..3687a38
--- /dev/null
+++ b/Examples/python/operator/runme.py
@@ -0,0 +1,21 @@
+# Operator overloading example
+import example
+
+a = example.Complex(2,3)
+b = example.Complex(-5,10)
+
+print "a   =",a
+print "b   =",b
+
+c = a + b
+print "c   =",c
+print "a*b =",a*b
+print "a-c =",a-c
+
+e = example.ComplexCopy(a-c)
+print "e   =",e
+
+# Big expression
+f = ((a+b)*(c+b*e)) + (-a)
+print "f   =",f
+