Committing R-SWIG

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@9175 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/r/class/Makefile

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+TOP        = ../..
+SWIG       = $(TOP)/../preinst-swig
+CXXSRCS    = example.cxx
+TARGET     = example
+INTERFACE  = example.i
+LIBS       = -lm
+ARGS = SRCS='$(SRCS)' SWIG='$(SWIG)' \
+	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)'
+
+all::
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' r_cpp
+
+clean::
+	$(MAKE) -f $(TOP)/Makefile $(ARGS) r_clean
+
+check: all
+	R CMD BATCH runme.R

Examples/r/class/example.cxx

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+/* File : example.c */
+
+#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(void) {
+  return M_PI*radius*radius;
+}
+
+double Circle::perimeter(void) {
+  return 2*M_PI*radius;
+}
+
+double Square::area(void) {
+  return width*width;
+}
+
+double Square::perimeter(void) {
+  return 4*width;
+}

Examples/r/class/example.h

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+/* File : example.h */
+
+class Shape {
+public:
+  Shape() {
+    nshapes++;
+  }
+  virtual ~Shape() {
+    nshapes--;
+  };
+  double  x, y;   
+  void    move(double dx, double dy);
+  virtual double area(void) = 0;
+  virtual double perimeter(void) = 0;
+  static  int nshapes;
+};
+
+class Circle : public Shape {
+private:
+  double radius;
+public:
+  Circle(double r) : radius(r) { };
+  virtual double area(void);
+  virtual double perimeter(void);
+};
+
+class Square : public Shape {
+private:
+  double width;
+public:
+  Square(double w) : width(w) { };
+  virtual double area(void);
+  virtual double perimeter(void);
+};
+
+
+
+
+  

Examples/r/class/example.i

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+/* File : example.i */
+%module example
+
+%inline %{
+#include "example.h"
+%}
+%include "example.h"
+
+

Examples/r/class/runme.R

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+# This file illustrates the shadow-class C++ interface generated
+# by SWIG.
+
+dyn.load('example_wrap.so')
+source('example_wrap.R')
+cacheMetaData(1)
+
+# ----- Object creation -----
+
+print("Creating some objects:")
+circle <- Circle(10)
+print ("    Created circle")
+square <- Square(10)
+print ("    Created square")
+
+# ----- Access a static member -----
+
+sprintf("A total of %d shapes were created", Shape_nshapes())
+
+# ----- Member data access -----
+
+# Set the location of the object
+
+circle$x <- 20
+circle$y <- 30
+
+square$x <- -10
+square$y <- 5
+
+print("Here is their current position:")
+sprintf("    Circle = (%f, %f)", circle$x,circle$y)
+sprintf("    Square = (%f, %f)", square$x,square$y)
+
+# ----- Call some methods -----
+
+print ("Here are some properties of the shapes:")
+
+sapply(c(circle, square), 
+		 function(o) {
+sprintf("       area = %f perimeter = %f", o$area(),  o$perimeter())
+})
+
+print("Guess I'll clean up now")
+delete(circle)
+delete(square)
+
+sprintf("%d shapes remain", Shape_nshapes())
+print ("Goodbye");
+

Examples/r/simple/Makefile

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+TOP        = ../..
+SWIG       = $(TOP)/../preinst-swig
+SRCS       = example.c
+TARGET     = example
+INTERFACE  = example.i
+ARGS = SRCS='$(SRCS)' SWIG='$(SWIG)' \
+	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)'
+
+all::
+	$(MAKE) -f $(TOP)/Makefile $(ARGS) r
+
+clean::
+	$(MAKE) -f $(TOP)/Makefile $(ARGS) r_clean
+
+check: all
+	R CMD BATCH runme.R

Examples/r/simple/example.c

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+/* File : example.c */
+
+/* A global variable */
+double Foo = 3.0;
+
+/* Compute the greatest common divisor of positive integers */
+int gcd(int x, int y) {
+  int g;
+  g = y;
+  while (x > 0) {
+    g = x;
+    x = y % x;
+    y = g;
+  }
+  return g;
+}
+
+

Examples/r/simple/example.i

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+/* File : example.i */
+%module example
+
+%inline %{
+extern int    gcd(int x, int y);
+extern double Foo;
+%}

Examples/r/simple/runme.R

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+# file: runme.R
+
+dyn.load('example_wrap.so')
+source('example_wrap.R')
+cacheMetaData(1)
+
+# Call our gcd() function
+
+x <- 42
+y <- 105
+g <- gcd(x,y)
+sprintf("The gcd of %d and %d is %d", x, y, g)
+
+# Manipulate the Foo global variable
+
+# Output its current value
+Foo()
+
+# Change its value
+Foo(3.1415926)
+
+# See if the change took effect
+Foo()
+