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Diffstat (limited to 'Examples/d/class/d2')
-rw-r--r-- | Examples/d/class/d2/runme.d | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/Examples/d/class/d2/runme.d b/Examples/d/class/d2/runme.d new file mode 100644 index 000000000..2e86c5fc7 --- /dev/null +++ b/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!" ); +} |