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digitalmars.D.bugs - Nested class constructors

reply Deewiant <deewiant.doesnotlike.spam gmail.com> writes:
DMD 0.135, Windows XP Service Pack 2.

class A {
	class B {
		this() {}
		
		void foo() {
			new B();
		}
	}
}

-> "no 'this' for nested class B"

Am I missing something obvious, doing something wrong, or is this a bug?
Oct 14 2005
next sibling parent "John C" <johnch_atms hotmail.com> writes:
"Deewiant" <deewiant.doesnotlike.spam gmail.com> wrote in message 
news:dionmt$afm$1 digitaldaemon.com...
 DMD 0.135, Windows XP Service Pack 2.

 class A {
 class B {
 this() {}

 void foo() {
 new B();
 }
 }
 }

 -> "no 'this' for nested class B"

 Am I missing something obvious, doing something wrong, or is this a bug?

I'm not 100% sure, but I don't think non-static nested classes can have user-defined constructors. Try these: 1) Remove B's constructor. The compiler will add a default which you can use. 2) change B's declaration to this: static class B. The only downside is you won't be able to access A's members without maintaining a reference to an instance of A. But you'll also be able to add your own constructors.
Oct 15 2005
prev sibling parent =?utf-8?B?RGF3aWQgQ2nEmcW8YXJraWV3aWN6?= <araelx gmail.com> writes:
On Fri, 14 Oct 2005 18:52:09 +0200, Deewiant  
<deewiant.doesnotlike.spam gmail.com> wrote:

 DMD 0.135, Windows XP Service Pack 2.

 class A {
 	class B {
 		this() {}
 		
 		void foo() {
 			new B();
 		}
 	}
 }

 -> "no 'this' for nested class B"

 Am I missing something obvious, doing something wrong, or is this a bug?

Nonstatic nested classes contain secret pointer to enclosing class. Creating them is possible only in that enclosing class (and this pointer is passed secretly). In A.B.foo() you probably want to create B instance with secret pointer same as in current instance. You probably could create A.newB() like that: class A { ... B newB() { return new B(); } ... } and use it insted of "new B();". But I think what you're tried could be allowed to. -- Dawid Ciężarkiewicz
Oct 17 2005