Added support for the D programming languge.

It is still a bit rough around some edges, particularly with regard to multi-threading and operator overloading, and there are some documentation bits missing, but it should be fine for basic use.

The test-suite should build and run fine with the current versions of DMD, LDC and Tango (at least) on Linux x86_64 and Mac OS X 10.6.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12299 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/d/callback/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ ../example.cxx example_wrap.cxx
+EXTRA_LDFLAGS = example.o example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d_cpp; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/callback/d1/runme.d

@@ -0,0 +1,36 @@
+module runme;
+
+import tango.io.Stdout;
+import example;
+
+public class DCallback : Callback {
+  public override void run() {
+    Stdout( "DCallback.run()" ).newline;
+  }
+}
+
+void main() {
+  auto caller = new Caller();
+
+  Stdout( "Adding and calling a normal C++ callback" ).newline;
+  Stdout( "----------------------------------------" ).newline;
+  {
+    scope auto callback = new Callback();
+    caller.setCallback(callback);
+    caller.call();
+    caller.resetCallback();
+  }
+
+  Stdout.newline;
+  Stdout( "Adding and calling a D callback" ).newline;
+  Stdout( "-------------------------------" ).newline;
+  {
+    scope auto callback = new DCallback();
+    caller.setCallback(callback);
+    caller.call();
+    caller.resetCallback();
+  }
+
+  Stdout.newline;
+  Stdout( "D exit" ).newline;
+}

Examples/d/callback/d2/runme.d

@@ -0,0 +1,36 @@
+module runme;
+
+import std.stdio;
+import example;
+
+public class DCallback : Callback {
+  public override void run() {
+    writeln( "DCallback.run()" );
+  }
+}
+
+void main() {
+  auto caller = new Caller();
+
+  writeln( "Adding and calling a normal C++ callback" );
+  writeln( "----------------------------------------" );
+  {
+    scope auto callback = new Callback();
+    caller.setCallback(callback);
+    caller.call();
+    caller.resetCallback();
+  }
+
+  writeln();
+  writeln( "Adding and calling a D callback" );
+  writeln( "-------------------------------" );
+  {
+    scope auto callback = new DCallback();
+    caller.setCallback(callback);
+    caller.call();
+    caller.resetCallback();
+  }
+
+  writeln();
+  writeln( "D exit" );
+}

Examples/d/callback/example.cxx

@@ -0,0 +1,4 @@
+/* File : example.cxx */
+
+#include "example.h"
+

Examples/d/callback/example.h

@@ -0,0 +1,24 @@
+/* File : example.h */
+
+#include <cstdio>
+#include <iostream>
+
+class Callback {
+public:
+	virtual ~Callback() { std::cout << "Callback::~Callback()" << std:: endl; }
+	virtual void run() { std::cout << "Callback::run()" << std::endl; }
+};
+
+
+class Caller {
+private:
+	Callback *_callback;
+public:
+	Caller(): _callback(0) {}
+	~Caller() { delCallback(); }
+	void delCallback() { delete _callback; _callback = 0; }
+	void setCallback(Callback *cb) { delCallback(); _callback = cb; }
+	void resetCallback() { _callback = 0; }
+	void call() { if (_callback) _callback->run(); }
+};
+

Examples/d/callback/example.i

@@ -0,0 +1,13 @@
+/* File : example.i */
+%module(directors="1") example
+%{
+#include "example.h"
+%}
+
+%include "std_string.i"
+
+/* turn on director wrapping Callback */
+%feature("director") Callback;
+
+%include "example.h"
+

Examples/d/check.list

@@ -0,0 +1,9 @@
+# See top-level Makefile.in.
+callback
+class
+constants
+enum
+extend
+funcptr
+simple
+variables

Examples/d/class/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ ../example.cxx example_wrap.cxx
+EXTRA_LDFLAGS = example.o example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d_cpp; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/class/d1/runme.d

@@ -0,0 +1,58 @@
+// This example illustrates how C++ classes can be used from D using SWIG.
+// The D class gets mapped onto the C++ class and behaves as if it is a D class.
+module runme;
+
+import tango.io.Stdout;
+import example;
+
+void main() {
+  // ----- Object creation -----
+
+  Stdout( "Creating some objects:" ).newline;
+
+  {
+    scope Square s = new Square(10);
+    scope Circle c = new Circle(10);
+
+    // ----- Access a static member -----
+    Stdout.format( "{} shapes were created.", Shape.nshapes ).newline;
+
+    // ----- Member data access -----
+
+    // Notice how we can do this using functions specific to
+    // the 'Circle' class.
+    c.x = 20;
+    c.y = 30;
+
+    // Now use the same functions in the base class
+    Shape shape = s;
+    shape.x = -10;
+    shape.y = 5;
+
+    Stdout( "\nHere is their current position:" ).newline;
+    Stdout.format( "    Circle = ( {}, {} )", c.x, c.y ).newline;
+    Stdout.format( "    Square = ( {}, {} )", s.x, s.y ).newline;
+
+    // ----- Call some methods -----
+
+    Stdout( "\nHere are some properties of the shapes:" ).newline;
+    Shape[] shapes = [ cast(Shape) c, cast(Shape) s ];
+    foreach ( currentShape; shapes )
+    {
+      Stdout.format( "    {}", currentShape.classinfo.name ).newline;
+      Stdout.format( "        area      = {}", currentShape.area() ).newline;
+      Stdout.format( "        perimeter = {}", currentShape.perimeter() ).newline;
+    }
+
+    // Notice how the area() and perimeter() functions really
+    // invoke the appropriate virtual method on each object.
+
+    // ----- Delete everything -----
+    Stdout( "\nGuess I'll clean up now:" ).newline;
+    // Note: when this using scope is exited the D destructors are called which
+    // in turn call the C++ destructors.
+  }
+
+  Stdout.format( "{} shapes remain", Shape.nshapes ).newline;
+  Stdout( "\nGoodbye!" ).newline;
+}

Examples/d/class/d2/runme.d

@@ -0,0 +1,58 @@
+// This example illustrates how C++ classes can be used from D using SWIG.
+// The D class gets mapped onto the C++ class and behaves as if it is a D class.
+module runme;
+
+import std.stdio;
+import example;
+
+void main() {
+  // ----- Object creation -----
+
+  writeln( "Creating some objects:" );
+
+  {
+    scope Square s = new Square(10);
+    scope Circle c = new Circle(10);
+
+    // ----- Access a static member -----
+    writefln( "%s shapes were created.", Shape.nshapes );
+
+    // ----- Member data access -----
+
+    // Notice how we can do this using functions specific to
+    // the 'Circle' class.
+    c.x = 20;
+    c.y = 30;
+
+    // Now use the same functions in the base class
+    Shape shape = s;
+    shape.x = -10;
+    shape.y = 5;
+
+    writeln( "\nHere is their current position:" );
+    writefln( "    Circle = ( %s, %s )", c.x, c.y );
+    writefln( "    Square = ( %s, %s )", s.x, s.y );
+
+    // ----- Call some methods -----
+
+    writeln( "\nHere are some properties of the shapes:" );
+    Shape[] shapes = [ cast(Shape) c, cast(Shape) s ];
+    foreach ( currentShape; shapes )
+    {
+      writefln( "    %s", currentShape.classinfo.name );
+      writefln( "        area      = %s", currentShape.area() );
+      writefln( "        perimeter = %s", currentShape.perimeter() );
+    }
+
+    // Notice how the area() and perimeter() functions really
+    // invoke the appropriate virtual method on each object.
+
+    // ----- Delete everything -----
+    writeln( "\nGuess I'll clean up now:" );
+    // Note: when this using scope is exited the D destructors are called which
+    // in turn call the C++ destructors.
+  }
+
+  writefln( "%s shapes remain", Shape.nshapes );
+  writeln( "\nGoodbye!" );
+}

Examples/d/class/example.cxx

@@ -0,0 +1,28 @@
+/* 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/d/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(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/d/class/example.i

@@ -0,0 +1,10 @@
+/* File : example.i */
+%module example
+
+%{
+#include "example.h"
+%}
+
+/* Let's just grab the original header file here */
+%include "example.h"
+

Examples/d/constants/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ example_wrap.c
+EXTRA_LDFLAGS = example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/constants/d1/runme.d

@@ -0,0 +1,28 @@
+module runme;
+
+import tango.io.Stdout;
+static import example;
+
+void main() {
+  Stdout.formatln("ICONST  = {} (should be 42)", example.ICONST);
+  Stdout.formatln("FCONST  = {} (should be 2.18)", example.FCONST);
+  Stdout.formatln("CCONST  = {} (should be 'x')", example.CCONST);
+  Stdout.formatln("CCONST2 = {} (this should be on a new line)", example.CCONST2);
+  Stdout.formatln("SCONST  = {} (should be 'Hello World')", example.SCONST);
+  Stdout.formatln("SCONST2 = {} (should be '\"Hello World\"')", example.SCONST2);
+  Stdout.formatln("EXPR    = {} (should be 48.55)", example.EXPR);
+  Stdout.formatln("iconst  = {} (should be 37)", example.iconst);
+  Stdout.formatln("fconst  = {} (should be 3.14)", example.fconst);
+
+  static if (is(typeof(example.EXTERN))) {
+    Stdout.formatln("EXTERN should not be defined, but is: {}.", example.EXTERN );
+  } else {
+    Stdout.formatln("EXTERN isn't defined (good)");
+  }
+
+  static if (is(typeof(example.FOO))) {
+    Stdout.formatln("FOO should not be defined, but is: {}.", example.FOO);
+  } else {
+    Stdout.formatln("FOO isn't defined (good)");
+  }
+}

Examples/d/constants/d2/runme.d

@@ -0,0 +1,28 @@
+module runme;
+
+import std.stdio;
+static import example;
+
+void main() {
+  writefln("ICONST  = %s (should be 42)", example.ICONST);
+  writefln("FCONST  = %s (should be 2.1828)", example.FCONST);
+  writefln("CCONST  = %s (should be 'x')", example.CCONST);
+  writefln("CCONST2 = %s (this should be on a new line)", example.CCONST2);
+  writefln("SCONST  = %s (should be 'Hello World')", example.SCONST);
+  writefln("SCONST2 = %s (should be '\"Hello World\"')", example.SCONST2);
+  writefln("EXPR    = %s (should be 48.5484)", example.EXPR);
+  writefln("iconst  = %s (should be 37)", example.iconst);
+  writefln("fconst  = %s (should be 3.14)", example.fconst);
+
+  static if (is(typeof(example.EXTERN))) {
+    writefln("EXTERN should not be defined, but is: %s.", example.EXTERN );
+  } else {
+    writeln("EXTERN isn't defined (good)");
+  }
+
+  static if (is(typeof(example.FOO))) {
+    writefln("FOO should not be defined, but is: %s.", example.FOO);
+  } else {
+    writeln("FOO isn't defined (good)");
+  }
+}

Examples/d/constants/example.d

@@ -0,0 +1,23 @@
+/* ----------------------------------------------------------------------------
+ * This file was automatically generated by SWIG (http://www.swig.org).
+ * Version 1.3.41
+ *
+ * Do not make changes to this file unless you know what you are doing--modify
+ * the SWIG interface file instead.
+ * ----------------------------------------------------------------------------- */
+
+module example;
+
+static import example_wrap;
+
+static import tango.stdc.stringz;
+
+public const int ICONST = 42;
+public const double FCONST = 2.1828;
+public const char CCONST = 'x';
+public const char CCONST2 = '\n';
+public const char[] SCONST = "Hello World";
+public const char[] SCONST2 = "\"Hello World\"";
+public const double EXPR = 42+3*(2.1828);
+public const int iconst = 37;
+public const double fconst = 3.14;

Examples/d/constants/example.i

@@ -0,0 +1,32 @@
+/* File : example.i */
+%module example
+
+/* Force the generated D code to use the C constant values rather than
+   retrieving them at runtime. You can also try disabling the feature and
+   compare the generated code. */
+%dnativeconst;
+
+
+/* A few preprocessor macros */
+
+#define    ICONST      42
+#define    FCONST      2.1828
+#define    CCONST      'x'
+#define    CCONST2     '\n'
+#define    SCONST      "Hello World"
+#define    SCONST2     "\"Hello World\""
+
+/* This should work just fine */
+#define    EXPR        ICONST + 3*(FCONST)
+
+/* This shouldn't do anything */
+#define    EXTERN      extern
+
+/* Neither should this (BAR isn't defined) */
+#define    FOO         (ICONST + BAR)
+
+
+/* The following directives also produce constants */
+
+%constant int iconst = 37;
+%constant double fconst = 3.14;

Examples/d/enum/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ ../example.cxx example_wrap.cxx
+EXTRA_LDFLAGS = example.o example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d_cpp; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/enum/d1/runme.d

@@ -0,0 +1,28 @@
+module runme;
+
+import tango.io.Stdout;
+import example;
+
+void main() {
+  Stdout( "Printing out some enum values:" ).newline;
+  Stdout("  color:").newline;
+  Stdout.formatln("    {} = {}", color.RED, cast(int)color.RED);
+  Stdout.formatln("    {} = {}", color.BLUE, cast(int)color.BLUE);
+  Stdout.formatln("    {} = {}", color.GREEN, cast(int)color.GREEN);
+
+  Stdout("\n  Foo.speed:").newline;
+  Stdout.formatln("    Foo.{} = {}", Foo.speed.IMPULSE, cast(int)Foo.speed.IMPULSE);
+  Stdout.formatln("    Foo.{} = {}", Foo.speed.WARP, cast(int)Foo.speed.WARP);
+  Stdout.formatln("    Foo.{} = {}", Foo.speed.LUDICROUS , cast(int)Foo.speed.LUDICROUS);
+
+  Stdout("\nTesting use of enums with functions:").newline;
+  example.enum_test(color.RED, Foo.speed.IMPULSE);
+  example.enum_test(color.BLUE, Foo.speed.WARP);
+  example.enum_test(color.GREEN, Foo.speed.LUDICROUS);
+
+  Stdout( "\nTesting use of enum with class method:" ).newline;
+  scope f = new Foo();
+  f.enum_test(Foo.speed.IMPULSE);
+  f.enum_test(Foo.speed.WARP);
+  f.enum_test(Foo.speed.LUDICROUS);
+}

Examples/d/enum/d2/runme.d

@@ -0,0 +1,28 @@
+module runme;
+
+import std.stdio;
+import example;
+
+void main() {
+  writeln( "Printing out some enum values:" );
+  writeln("  color:");
+  writefln("    %s = %s", color.RED, cast(int)color.RED);
+  writefln("    %s = %s", color.BLUE, cast(int)color.BLUE);
+  writefln("    %s = %s", color.GREEN, cast(int)color.GREEN);
+
+  writeln("\n  Foo.speed:");
+  writefln("    Foo.%s = %s", Foo.speed.IMPULSE, cast(int)Foo.speed.IMPULSE);
+  writefln("    Foo.%s = %s", Foo.speed.WARP, cast(int)Foo.speed.WARP);
+  writefln("    Foo.%s = %s", Foo.speed.LUDICROUS , cast(int)Foo.speed.LUDICROUS);
+
+  writeln("\nTesting use of enums with functions:");
+  example.enum_test(color.RED, Foo.speed.IMPULSE);
+  example.enum_test(color.BLUE, Foo.speed.WARP);
+  example.enum_test(color.GREEN, Foo.speed.LUDICROUS);
+
+  writeln( "\nTesting use of enum with class method:" );
+  scope f = new Foo();
+  f.enum_test(Foo.speed.IMPULSE);
+  f.enum_test(Foo.speed.WARP);
+  f.enum_test(Foo.speed.LUDICROUS);
+}

Examples/d/enum/example.cxx

@@ -0,0 +1,37 @@
+/* File : example.cxx */
+
+#include "example.h"
+#include <stdio.h>
+
+void Foo::enum_test(speed s) {
+  if (s == IMPULSE) {
+    printf("IMPULSE speed\n");
+  } else if (s == WARP) {
+    printf("WARP speed\n");
+  } else if (s == LUDICROUS) {
+    printf("LUDICROUS speed\n");
+  } else {
+    printf("Unknown speed\n");
+  }
+}
+
+void enum_test(color c, Foo::speed s) {
+  if (c == RED) {
+    printf("color = RED, ");
+  } else if (c == BLUE) {
+    printf("color = BLUE, ");
+  } else if (c == GREEN) {
+    printf("color = GREEN, ");
+  } else {
+    printf("color = Unknown color!, ");
+  }
+  if (s == Foo::IMPULSE) {
+    printf("speed = IMPULSE speed\n");
+  } else if (s == Foo::WARP) {
+    printf("speed = WARP speed\n");
+  } else if (s == Foo::LUDICROUS) {
+    printf("speed = LUDICROUS speed\n");
+  } else {
+    printf("speed = Unknown speed!\n");
+  }
+}

Examples/d/enum/example.h

@@ -0,0 +1,13 @@
+/* File : example.h */
+
+enum color { RED, BLUE, GREEN };
+
+class Foo {
+ public:
+  Foo() { }
+  enum speed { IMPULSE=10, WARP=20, LUDICROUS=30 };
+  void enum_test(speed s);
+};
+
+void enum_test(color c, Foo::speed s);
+

Examples/d/enum/example.i

@@ -0,0 +1,11 @@
+/* File : example.i */
+%module example
+
+%{
+#include "example.h"
+%}
+
+/* Let's just grab the original header file here */
+
+%include "example.h"
+

Examples/d/extend/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ ../example.cxx example_wrap.cxx
+EXTRA_LDFLAGS = example.o example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d_cpp; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/extend/d1/runme.d

@@ -0,0 +1,75 @@
+/// This file illustrates the cross language polymorphism using directors.
+module runme;
+
+import example;
+import tango.io.Stdout;
+
+// CEO class, which overrides Employee.getPosition().
+class CEO : Manager {
+public:
+  this( char[] name ) {
+    super( name );
+  }
+
+  override char[] getPosition() {
+    return "CEO";
+  }
+
+  // Public method to stop the SWIG proxy base class from thinking it owns the underlying C++ memory.
+  void disownMemory() {
+    swigCMemOwn = false;
+  }
+}
+
+void main() {
+  // Create an instance of CEO, a class derived from the D proxy of the
+  // underlying C++ class. The calls to getName() and getPosition() are standard,
+  // the call to getTitle() uses the director wrappers to call CEO.getPosition().
+
+  auto e = new CEO( "Alice" );
+  Stdout.formatln( "{} is a {}.", e.getName(), e.getPosition() );
+  Stdout.formatln( "Just call her '{}'.", e.getTitle() );
+  Stdout( "----------------------" ).newline;
+
+  {
+    // Create a new EmployeeList instance.  This class does not have a C++
+    // director wrapper, but can be used freely with other classes that do.
+    scope auto list = new EmployeeList();
+
+    // EmployeeList owns its items, so we must surrender ownership of objects we add.
+    e.disownMemory();
+    list.addEmployee(e);
+    Stdout( "----------------------" ).newline;
+
+    // Now we access the first four items in list (three are C++ objects that
+    // EmployeeList's constructor adds, the last is our CEO). The virtual
+    // methods of all these instances are treated the same. For items 0, 1, and
+    // 2, all methods resolve in C++. For item 3, our CEO, getTitle calls
+    // getPosition which resolves in D. The call to getPosition is
+    // slightly different, however, because of the overidden getPosition() call, since
+    // now the object reference has been "laundered" by passing through
+    // EmployeeList as an Employee*. Previously, D resolved the call
+    // immediately in CEO, but now D thinks the object is an instance of
+    // class Employee. So the call passes through the
+    // Employee proxy class and on to the C wrappers and C++ director,
+    // eventually ending up back at the D CEO implementation of getPosition().
+    // The call to getTitle() for item 3 runs the C++ Employee::getTitle()
+    // method, which in turn calls getPosition(). This virtual method call
+    // passes down through the C++ director class to the D implementation
+    // in CEO. All this routing takes place transparently.
+
+    Stdout( "(position, title) for items 0-3:" ).newline;
+    Stdout.formatln( "  {}, '{}'", list.getItem(0).getPosition(), list.getItem(0).getTitle() );
+    Stdout.formatln( "  {}, '{}'", list.getItem(1).getPosition(), list.getItem(1).getTitle() );
+    Stdout.formatln( "  {}, '{}'", list.getItem(2).getPosition(), list.getItem(2).getTitle() );
+    Stdout.formatln( "  {}, '{}'", list.getItem(3).getPosition(), list.getItem(3).getTitle() );
+    Stdout( "----------------------" ).newline;
+
+    // All Employees will be destroyed when the EmployeeList goes out of scope,
+    // including the CEO instance.
+  }
+  Stdout( "----------------------" ).newline;
+
+  // All done.
+  Stdout( "Exiting cleanly from D code." ).newline;
+}

Examples/d/extend/d2/runme.d

@@ -0,0 +1,75 @@
+/// This file illustrates the cross language polymorphism using directors.
+module runme;
+
+import std.stdio;
+import example;
+
+// CEO class, which overrides Employee.getPosition().
+class CEO : Manager {
+public:
+  this( string name ) {
+    super( name );
+  }
+
+  override string getPosition() const {
+    return "CEO";
+  }
+
+  // Public method to stop the SWIG proxy base class from thinking it owns the underlying C++ memory.
+  void disownMemory() {
+    swigCMemOwn = false;
+  }
+}
+
+void main() {
+  // Create an instance of CEO, a class derived from the D proxy of the
+  // underlying C++ class. The calls to getName() and getPosition() are standard,
+  // the call to getTitle() uses the director wrappers to call CEO.getPosition().
+
+  auto e = new CEO( "Alice" );
+  writefln( "%s is a %s.", e.getName(), e.getPosition() );
+  writefln( "Just call her '%s'.", e.getTitle() );
+  writeln( "----------------------" );
+
+  {
+    // Create a new EmployeeList instance.  This class does not have a C++
+    // director wrapper, but can be used freely with other classes that do.
+    scope auto list = new EmployeeList();
+
+    // EmployeeList owns its items, so we must surrender ownership of objects we add.
+    e.disownMemory();
+    list.addEmployee(e);
+    writeln( "----------------------" );
+
+    // Now we access the first four items in list (three are C++ objects that
+    // EmployeeList's constructor adds, the last is our CEO). The virtual
+    // methods of all these instances are treated the same. For items 0, 1, and
+    // 2, all methods resolve in C++. For item 3, our CEO, getTitle calls
+    // getPosition which resolves in D. The call to getPosition is
+    // slightly different, however, because of the overidden getPosition() call, since
+    // now the object reference has been "laundered" by passing through
+    // EmployeeList as an Employee*. Previously, D resolved the call
+    // immediately in CEO, but now D thinks the object is an instance of
+    // class Employee. So the call passes through the
+    // Employee proxy class and on to the C wrappers and C++ director,
+    // eventually ending up back at the D CEO implementation of getPosition().
+    // The call to getTitle() for item 3 runs the C++ Employee::getTitle()
+    // method, which in turn calls getPosition(). This virtual method call
+    // passes down through the C++ director class to the D implementation
+    // in CEO. All this routing takes place transparently.
+
+    writeln( "(position, title) for items 0-3:" );
+    writefln( "  %s, '%s'", list.getItem(0).getPosition(), list.getItem(0).getTitle() );
+    writefln( "  %s, '%s'", list.getItem(1).getPosition(), list.getItem(1).getTitle() );
+    writefln( "  %s, '%s'", list.getItem(2).getPosition(), list.getItem(2).getTitle() );
+    writefln( "  %s, '%s'", list.getItem(3).getPosition(), list.getItem(3).getTitle() );
+    writeln( "----------------------" );
+
+    // All Employees will be destroyed when the EmployeeList goes out of scope,
+    // including the CEO instance.
+  }
+  writeln( "----------------------" );
+
+  // All done.
+  writeln( "Exiting cleanly from D code." );
+}

Examples/d/extend/example.cxx

@@ -0,0 +1,4 @@
+/* File : example.cxx */
+
+#include "example.h"
+

Examples/d/extend/example.h

@@ -0,0 +1,56 @@
+/* File : example.h */
+
+#include <cstdio>
+#include <iostream>
+#include <vector>
+#include <string>
+#include <cmath>
+
+class Employee {
+private:
+	std::string name;
+public:
+	Employee(const char* n): name(n) {}
+	virtual std::string getTitle() { return getPosition() + " " + getName(); }
+	virtual std::string getName() { return name; }
+	virtual std::string getPosition() const { return "Employee"; }
+	virtual ~Employee() { printf("~Employee() @ %p\n", this); }
+};
+
+
+class Manager: public Employee {
+public:
+	Manager(const char* n): Employee(n) {}
+	virtual std::string getPosition() const { return "Manager"; }
+};
+
+
+class EmployeeList {
+	std::vector<Employee*> list;
+public:
+	EmployeeList() {
+		list.push_back(new Employee("Bob"));
+		list.push_back(new Employee("Jane"));
+		list.push_back(new Manager("Ted"));
+	}
+	void addEmployee(Employee *p) {
+		list.push_back(p);
+		std::cout << "New employee added. Current employees are:" << std::endl;
+		std::vector<Employee*>::iterator i;
+		for (i=list.begin(); i!=list.end(); i++) {
+			std::cout << "  " << (*i)->getTitle() << std::endl;
+		}
+	}
+	const Employee *getItem(int i) {
+		return list[i];
+	}
+	~EmployeeList() { 
+		std::vector<Employee*>::iterator i;
+		std::cout << "~EmployeeList, deleting " << list.size() << " employees." << std::endl;
+		for (i=list.begin(); i!=list.end(); i++) {
+			delete *i;
+		}
+		std::cout << "~EmployeeList empty." << std::endl;
+	}
+};
+

Examples/d/extend/example.i

@@ -0,0 +1,14 @@
+/* File : example.i */
+%module(directors="1") example
+%{
+#include "example.h"
+%}
+
+%include "std_string.i"
+
+/* turn on director wrapping for Manager */
+%feature("director") Employee;
+%feature("director") Manager;
+
+%include "example.h"
+

Examples/d/funcptr/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ ../example.c example_wrap.c
+EXTRA_LDFLAGS = example.o example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/funcptr/d1/runme.d

@@ -0,0 +1,34 @@
+module runme;
+
+import tango.io.Stdout;
+static import example;
+
+extern(C) int add(int a, int b) {
+  return a + b;
+}
+
+extern(C) int sub(int a, int b) {
+  return a - b;
+}
+
+extern(C) int mul(int a, int b) {
+  return a * b;
+}
+
+void main() {
+  int a = 37;
+  int b = 42;
+
+  Stdout( "a = " )( a ).newline;
+  Stdout( "b = " )( b ).newline;
+
+  Stdout( "Trying some C callback functions:" ).newline;
+  Stdout( "    ADD(a,b) = " )( example.do_op( a, b, example.ADD ) ).newline;
+  Stdout( "    SUB(a,b) = " )( example.do_op( a, b, example.SUB ) ).newline;
+  Stdout( "    MUL(a,b) = " )( example.do_op( a, b, example.MUL ) ).newline;
+
+  Stdout( "Now the same with callback functions defined in D:" ).newline;
+  Stdout( "    add(a,b) = " )( example.do_op( a, b, &add ) ).newline;
+  Stdout( "    sub(a,b) = " )( example.do_op( a, b, &sub ) ).newline;
+  Stdout( "    mul(a,b) = " )( example.do_op( a, b, &mul ) ).newline;
+}

Examples/d/funcptr/d2/runme.d

@@ -0,0 +1,34 @@
+module runme;
+
+import std.stdio;
+static import example;
+
+extern(C) int add(int a, int b) {
+  return a + b;
+}
+
+extern(C) int sub(int a, int b) {
+  return a - b;
+}
+
+extern(C) int mul(int a, int b) {
+  return a * b;
+}
+
+void main() {
+  int a = 37;
+  int b = 42;
+
+  writefln( "a = %s", a );
+  writefln( "b = %s", b );
+
+  writeln( "Trying some C callback functions:" );
+  writefln( "    ADD(a,b) = %s", example.do_op( a, b, example.ADD ) );
+  writefln( "    SUB(a,b) = %s", example.do_op( a, b, example.SUB ) );
+  writefln( "    MUL(a,b) = %s", example.do_op( a, b, example.MUL ) );
+
+  writeln( "Now the same with callback functions defined in D:" );
+  writefln( "    add(a,b) = %s", example.do_op( a, b, &add ) );
+  writefln( "    sub(a,b) = %s", example.do_op( a, b, &sub ) );
+  writefln( "    mul(a,b) = %s", example.do_op( a, b, &mul ) );
+}

Examples/d/funcptr/example.c

@@ -0,0 +1,19 @@
+/* File : example.c */
+
+int do_op(int a, int b, int (*op)(int,int)) {
+  return (*op)(a,b);
+}
+
+int add(int a, int b) {
+  return a+b;
+}
+
+int sub(int a, int b) {
+  return a-b;
+}
+
+int mul(int a, int b) {
+  return a*b;
+}
+
+int (*funcvar)(int,int) = add;

Examples/d/funcptr/example.h

@@ -0,0 +1,9 @@
+/* file: example.h */
+
+extern int do_op(int,int, int (*op)(int,int));
+extern int add(int,int);
+extern int sub(int,int);
+extern int mul(int,int);
+
+extern int (*funcvar)(int,int);
+

Examples/d/funcptr/example.i

@@ -0,0 +1,16 @@
+/* File : example.i */
+%module example
+%{
+#include "example.h"
+%}
+
+/* Wrap a function taking a pointer to a function */
+extern int  do_op(int a, int b, int (*op)(int, int));
+
+/* Now install a bunch of "ops" as constants */
+%constant int (*ADD)(int,int) = add;
+%constant int (*SUB)(int,int) = sub;
+%constant int (*MUL)(int,int) = mul;
+
+extern int (*funcvar)(int,int);
+

Examples/d/simple/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ ../example.c example_wrap.c
+EXTRA_LDFLAGS = example.o example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/simple/d1/runme.d

@@ -0,0 +1,27 @@
+module runme;
+
+import tango.io.Stdout;
+static import example;
+
+void main() {
+  /*
+   * Call our gcd() function.
+   */
+  int x = 42;
+  int y = 105;
+  int g = example.gcd( x, y );
+  Stdout.format( "The gcd of {} and {} is {}.", x, y, g ).newline;
+
+  /*
+   * Manipulate the Foo global variable.
+   */
+
+  // Output its current value
+  Stdout.format( "Foo = {}", example.Foo ).newline;
+
+  // Change its value
+  example.Foo = 3.1415926;
+
+  // See if the change took effect
+  Stdout.format( "Foo = {}", example.Foo ).newline;
+}

Examples/d/simple/d2/runme.d

@@ -0,0 +1,27 @@
+module runme;
+
+import std.stdio;
+static import example;
+
+void main() {
+  /*
+   * Call our gcd() function.
+   */
+  int x = 42;
+  int y = 105;
+  int g = example.gcd(x, y);
+  writefln("The gcd of %s and %s is %s.", x, y, g);
+
+  /*
+   * Manipulate the Foo global variable.
+   */
+
+  // Output its current value
+  writefln("Foo = %s", example.Foo);
+
+  // Change its value
+  example.Foo = 3.1415926;
+
+  // See if the change took effect
+  writefln("Foo = %s", example.Foo);
+}

Examples/d/simple/example.c

@@ -0,0 +1,18 @@
+/* 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/d/simple/example.i

@@ -0,0 +1,7 @@
+/* File : example.i */
+%module example
+
+%inline %{
+extern int    gcd(int x, int y);
+extern double Foo;
+%}

Examples/d/variables/Makefile

@@ -0,0 +1,28 @@
+ifeq (2,$(D_VERSION))
+  WORKING_DIR = d2/
+else
+  WORKING_DIR = d1/
+endif
+
+TOP           = ../../..
+SWIG          = $(TOP)/../preinst-swig
+EXTRA_CFLAGS  = -I../ ../example.c example_wrap.c
+EXTRA_LDFLAGS = example.o example_wrap.o
+TARGET        = example_wrap
+SWIGOPT       =
+DSRCS         = *.d
+DFLAGS        = -ofrunme
+
+
+all::	d
+
+d::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile EXTRA_CFLAGS='$(EXTRA_CFLAGS)' EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT) -outcurrentdir ../example.i' TARGET='$(TARGET)' d; \
+	$(MAKE) -f $(TOP)/Makefile DSRCS='$(DSRCS)' DFLAGS='$(DFLAGS)' d_compile
+
+clean::
+	cd $(WORKING_DIR); \
+	$(MAKE) -f $(TOP)/Makefile d_clean
+
+check: all

Examples/d/variables/d1/runme.d

@@ -0,0 +1,71 @@
+// This example illustrates global variable access from C#.
+module runme;
+
+import tango.io.Stdout;
+static import example;
+
+void main() {
+  // Try to set the values of some global variables
+  example.ivar    =  42;
+  example.svar    = -31000;
+  example.lvar    =  65537;
+  example.uivar   =  123456;
+  example.usvar   =  61000;
+  example.ulvar   =  654321;
+  example.scvar   =  -13;
+  example.ucvar   =  251;
+  example.cvar    =  'S';
+  example.fvar    =  3.14159f;
+  example.dvar    =  2.1828;
+  example.strvar  =  "Hello World";
+  example.iptrvar = example.new_int(37);
+  example.ptptr   = example.new_Point(37,42);
+  example.name    = "Bill";
+
+  // Now print out the values of the variables
+  Stdout.formatln( "Variables (printed from D):" );
+  Stdout.formatln( "ivar      = {}", example.ivar );
+  Stdout.formatln( "svar      = {}", example.svar );
+  Stdout.formatln( "lvar      = {}", example.lvar );
+  Stdout.formatln( "uivar     = {}", example.uivar );
+  Stdout.formatln( "usvar     = {}", example.usvar );
+  Stdout.formatln( "ulvar     = {}", example.ulvar );
+  Stdout.formatln( "scvar     = {}", example.scvar );
+  Stdout.formatln( "ucvar     = {}", example.ucvar );
+  Stdout.formatln( "fvar      = {}", example.fvar );
+  Stdout.formatln( "dvar      = {}", example.dvar );
+  Stdout.formatln( "cvar      = {}", example.cvar );
+  Stdout.formatln( "strvar    = {}", example.strvar );
+  Stdout.formatln( "cstrvar   = {}", example.cstrvar );
+  Stdout.formatln( "iptrvar   = {}", example.iptrvar );
+  Stdout.formatln( "name      = {}", example.name );
+  Stdout.formatln( "ptptr     = {} {}", example.ptptr, example.Point_print(example.ptptr) );
+  Stdout.formatln( "pt        = {} {}", example.pt, example.Point_print(example.pt) );
+  Stdout.formatln( "status    = {}", example.status );
+
+  Stdout.formatln( "\nVariables (printed from the C library):" );
+  example.print_vars();
+
+  Stdout.formatln( "\nNow I'm going to try and modify some read only variables:" );
+  Stdout.formatln( "Checking that the read only variables are readonly..." );
+
+  Stdout( "     'path'..." );
+  static if ( is( typeof( example.path = "a" ) ) )
+    Stdout.formatln("Oh dear, this variable is not read only!");
+  else
+    Stdout.formatln("Good.");
+
+  Stdout( "     'status'..." );
+  static if ( is( typeof( example.status = 2 ) ) )
+    Stdout.formatln("Oh dear, this variable is not read only!");
+  else
+    Stdout.formatln("Good.");
+
+  Stdout.formatln( "\nI'm going to try and update a structure variable:" );
+
+  example.pt = example.ptptr;
+
+  Stdout( "The new value is " ).flush;
+  example.pt_print();
+  Stdout.formatln( "You should see the value {}", example.Point_print(example.ptptr) );
+}

Examples/d/variables/d2/runme.d

@@ -0,0 +1,71 @@
+// This example illustrates global variable access from C#.
+module runme;
+
+import std.stdio;
+static import example;
+
+void main() {
+  // Try to set the values of some global variables
+  example.ivar    =  42;
+  example.svar    = -31000;
+  example.lvar    =  65537;
+  example.uivar   =  123456;
+  example.usvar   =  61000;
+  example.ulvar   =  654321;
+  example.scvar   =  -13;
+  example.ucvar   =  251;
+  example.cvar    =  'S';
+  example.fvar    =  3.14159f;
+  example.dvar    =  2.1828;
+  example.strvar  =  "Hello World";
+  example.iptrvar = example.new_int(37);
+  example.ptptr   = example.new_Point(37,42);
+  example.name    = "Bill";
+
+  // Now print out the values of the variables
+  writefln( "Variables (printed from D):" );
+  writefln( "ivar      = %s", example.ivar );
+  writefln( "svar      = %s", example.svar );
+  writefln( "lvar      = %s", example.lvar );
+  writefln( "uivar     = %s", example.uivar );
+  writefln( "usvar     = %s", example.usvar );
+  writefln( "ulvar     = %s", example.ulvar );
+  writefln( "scvar     = %s", example.scvar );
+  writefln( "ucvar     = %s", example.ucvar );
+  writefln( "fvar      = %s", example.fvar );
+  writefln( "dvar      = %s", example.dvar );
+  writefln( "cvar      = %s", example.cvar );
+  writefln( "strvar    = %s", example.strvar );
+  writefln( "cstrvar   = %s", example.cstrvar );
+  writefln( "iptrvar   = %s", example.iptrvar );
+  writefln( "name      = %s", example.name );
+  writefln( "ptptr     = %s %s", example.ptptr, example.Point_print(example.ptptr) );
+  writefln( "pt        = %s %s", example.pt, example.Point_print(example.pt) );
+  writefln( "status    = %s", example.status );
+
+  writefln( "\nVariables (printed from the C library):" );
+  example.print_vars();
+
+  writefln( "\nNow I'm going to try and modify some read only variables:" );
+  writefln( "Checking that the read only variables are readonly..." );
+
+  writeln( "     'path'..." );
+  static if ( is( typeof( example.path = "a" ) ) )
+    writefln("Oh dear, this variable is not read only!");
+  else
+    writefln("Good.");
+
+  writeln( "     'status'..." );
+  static if ( is( typeof( example.status = 2 ) ) )
+    writefln("Oh dear, this variable is not read only!");
+  else
+    writefln("Good.");
+
+  writefln( "\nI'm going to try and update a structure variable:" );
+
+  example.pt = example.ptptr;
+
+  write( "The new value is " );
+  example.pt_print();
+  writefln( "You should see the value %s", example.Point_print(example.ptptr) );
+}

Examples/d/variables/example.c

@@ -0,0 +1,91 @@
+/* File : example.c */
+
+/* I'm a file containing some C global variables */
+
+/* Deal with Microsoft's attempt at deprecating C standard runtime functions */
+#if !defined(SWIG_NO_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER)
+# define _CRT_SECURE_NO_DEPRECATE
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "example.h"
+
+int              ivar = 0;
+short            svar = 0;
+long             lvar = 0;
+unsigned int     uivar = 0;
+unsigned short   usvar = 0;
+unsigned long    ulvar = 0;
+signed char      scvar = 0;
+unsigned char    ucvar = 0;
+char             cvar = 0;
+float            fvar = 0;
+double           dvar = 0;
+char            *strvar = 0;
+const char       cstrvar[] = "Goodbye";
+int             *iptrvar = 0;
+char             name[256] = "Dave";
+char             path[256] = "/home/beazley";
+
+
+/* Global variables involving a structure */
+Point           *ptptr = 0;
+Point            pt = { 10, 20 };
+
+/* A variable that we will make read-only in the interface */
+int              status = 1;
+
+/* A debugging function to print out their values */
+
+void print_vars() {
+  printf("ivar      = %d\n", ivar);
+  printf("svar      = %d\n", svar);
+  printf("lvar      = %ld\n", lvar);
+  printf("uivar     = %u\n", uivar);
+  printf("usvar     = %u\n", usvar);
+  printf("ulvar     = %lu\n", ulvar);
+  printf("scvar     = %d\n", scvar);
+  printf("ucvar     = %u\n", ucvar);
+  printf("fvar      = %g\n", fvar);
+  printf("dvar      = %g\n", dvar);
+  printf("cvar      = %c\n", cvar);
+  printf("strvar    = %s\n", strvar ? strvar : "(null)");
+  printf("cstrvar   = %s\n", cstrvar ? cstrvar : "(null)");
+  printf("iptrvar   = %p\n", iptrvar);
+  printf("name      = %s\n", name);
+  printf("ptptr     = %p (%d, %d)\n", ptptr, ptptr ? ptptr->x : 0, ptptr ? ptptr->y : 0);
+  printf("pt        = (%d, %d)\n", pt.x, pt.y);
+  printf("status    = %d\n", status);
+}
+
+/* A function to create an integer (to test iptrvar) */
+
+int *new_int(int value) {
+  int *ip = (int *) malloc(sizeof(int));
+  *ip = value;
+  return ip;
+}
+
+/* A function to create a point */
+
+Point *new_Point(int x, int y) {
+  Point *p = (Point *) malloc(sizeof(Point));
+  p->x = x;
+  p->y = y;
+  return p;
+}
+
+char * Point_print(Point *p) {
+  static char buffer[256];
+  if (p) {
+    sprintf(buffer,"(%d, %d)", p->x,p->y);
+  } else {
+    sprintf(buffer,"null");
+  }
+  return buffer;
+}
+
+void pt_print() {
+  printf("(%d, %d)\n", pt.x, pt.y);
+}

Examples/d/variables/example.h

@@ -0,0 +1,6 @@
+/* File: example.h */
+
+typedef struct {
+  int x,y;
+} Point;
+

Examples/d/variables/example.i

@@ -0,0 +1,49 @@
+/* File : example.i */
+%module example
+%{
+#include "example.h"
+%}
+
+/* Some global variable declarations */
+%inline %{
+extern int              ivar;
+extern short            svar;
+extern long             lvar;
+extern unsigned int     uivar;
+extern unsigned short   usvar;
+extern unsigned long    ulvar;
+extern signed char      scvar;
+extern unsigned char    ucvar;
+extern char             cvar;
+extern float            fvar;
+extern double           dvar;
+extern char            *strvar;
+extern const char       cstrvar[];
+extern int             *iptrvar;
+extern char             name[256];
+
+extern Point           *ptptr;
+extern Point            pt;
+%}
+
+
+/* Some read-only variables */
+
+%immutable;
+
+%inline %{
+extern int  status;
+extern char path[256];
+%}
+
+%mutable;
+
+/* Some helper functions to make it easier to test */
+%inline %{
+extern void  print_vars();
+extern int  *new_int(int value);
+extern Point *new_Point(int x, int y);
+extern char  *Point_print(Point *p);
+extern void  pt_print();
+%}
+