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using static narrow methods instead of %extended ones.

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now it looks more natural and similar to the CORBA downcasting mechanism.


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5587 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
Marcelo Matus 2003-12-23 10:10:04 +00:00
commit 394aacb890
4 changed files with 56 additions and 37 deletions
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16
Examples/test-suite/java/virtual_poly_runme.java
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@ -18,6 +18,7 @@ public class virtual_poly_runme {
NDouble d = new NDouble(3.5);
NInt i = new NInt(2);
NInt j = virtual_poly.incr(i);
//
// These two natural 'copy' forms fail, only java and csharp
// because no polymorphic return types are supported.
@ -32,13 +33,16 @@ public class virtual_poly_runme {
NNumber dc = d.copy();
NNumber ic = i.copy();
//
// The real problem is that there is no way to recover the
// original NInt or NDouble objects, even when you try
// to use the plain and natural C++ dynamic_cast operations,
// since they fail:
// The real problem is that there is no way to recover the
// original NInt or NDouble objects, even when you try to use the
// plain and natural C++ dynamic_cast operation, or the user
// downcasting mechanism:
//
NDouble ddc = virtual_poly.NDouble_dynamic_cast(dc);
NInt dic = virtual_poly.NInt_dynamic_cast(ic);
// don't work
NDouble ddc = NDouble.narrow(dc);
NInt dic = NInt.narrow(ic);
}
}