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digitalmars.D - is this a dmd bug ?

reply Long Chang <changedalone gmail.com> writes:
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Content-Type: text/plain; charset=UTF-8

public interface Listener {
    void handleEvent (int);
}

void main(){
    void print(int evt){

    }
    Listener listener    = new class() Listener {
        public void handleEvent(int evt) {
            .print(evt);
        }
    };
}

-----------------------------------------------------------------------------------
x.d(20): Error: undefined identifier module x.print
x.d(20): Error: function expected before (), not module x.print of type void

--00504501810244473704791c9f4f
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Content-Transfer-Encoding: quoted-printable

public interface Listener {<br>=C2=A0=C2=A0=C2=A0 void handleEvent (int);<b=
r>}<br><br>void main(){<br>=C2=A0=C2=A0=C2=A0 void print(int evt){<br>=C2=
=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0 <br>=C2=A0=C2=A0=C2=A0 }<br>=C2=A0=C2=A0=
=C2=A0 Listener listener=C2=A0=C2=A0=C2=A0 =3D new class() Listener {<br>=
=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0 public void handleEvent(int evt) {<br=



=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0 }<br>=C2=A0=C2=A0=C2=A0 };<br>}<br><b=
r>-------------------------------------------------------------------------=
----------<br>x.d(20): Error: undefined identifier module x.print<br>x.d(20=
): Error: function expected before (), not module x.print of type void<br>
<br><br>

--00504501810244473704791c9f4f--



 Nov 24 2009



 next sibling parent  "Denis Koroskin" <2korden gmail.com>  writes:


On Tue, 24 Nov 2009 14:55:44 +0300, Long Chang <changedalone gmail.com>  
wrote:


 public interface Listener {
     void handleEvent (int);
 }

 void main(){
     void print(int evt){

     }
     Listener listener    = new class() Listener {
         public void handleEvent(int evt) {
             .print(evt);
         }
     };
 }

 -----------------------------------------------------------------------------------
 x.d(20): Error: undefined identifier module x.print
 x.d(20): Error: function expected before (), not module x.print of type  
 void



Try removing a dot before print.
As is, it searches for a print function at a global scope, fails to find  
one and shows an error.

I'm not sure it is a proper behavior, though. Try creating a bugzilla  
report.



 Nov 24 2009



prev sibling next sibling parent  "Steven Schveighoffer" <schveiguy yahoo.com>  writes:


On Tue, 24 Nov 2009 06:55:44 -0500, Long Chang <changedalone gmail.com>  
wrote:


 public interface Listener {
     void handleEvent (int);
 }

 void main(){
     void print(int evt){

     }
     Listener listener    = new class() Listener {
         public void handleEvent(int evt) {
             .print(evt);
         }
     };
 }

 -----------------------------------------------------------------------------------
 x.d(20): Error: undefined identifier module x.print
 x.d(20): Error: function expected before (), not module x.print of type  
 void



It's the . before the print.  It means "only look in the global scope".

-Steve



 Nov 24 2009



prev sibling next sibling parent  Long Chang <changedalone gmail.com>  writes:


--0016363b798476b19004791d39e4
Content-Type: text/plain; charset=UTF-8

how about this case:


public interface Listener {
    void handleEvent (int);
}

class Test{
    this(){
        Listener listener    = new class() Listener {
            public void handleEvent(int evt) {
                toString(evt);
            }
        };
    }

    void toString(int evt){

    }
}

void main(){

}

---------------------------------------
x.d(17): Error: function object.Object.toString () does not match parameter
types (int)
x.d(17): Error: expected 0 arguments, not 1 for non-variadic function type
char[]()

--0016363b798476b19004791d39e4
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--0016363b798476b19004791d39e4--



 Nov 24 2009



prev sibling next sibling parent  "Steven Schveighoffer" <schveiguy yahoo.com>  writes:


On Tue, 24 Nov 2009 07:38:51 -0500, Long Chang <changedalone gmail.com>  
wrote:


 how about this case:


 public interface Listener {
     void handleEvent (int);
 }

 class Test{
     this(){
         Listener listener    = new class() Listener {
             public void handleEvent(int evt) {
                 toString(evt);
             }
         };
     }

     void toString(int evt){

     }
 }

 void main(){

 }

 ---------------------------------------
 x.d(17): Error: function object.Object.toString () does not match  
 parameter
 types (int)
 x.d(17): Error: expected 0 arguments, not 1 for non-variadic function  
 type
 char[]()



Try outer.toString(evt).

Note that the anonymous class inherits from Object, which defines toString  
as:

char[] toString();

So the compiler thinks you are trying to call your anonymous class'  
toString, not the outer class' toString.

-Steve



 Nov 24 2009



prev sibling next sibling parent  Long Chang <changedalone gmail.com>  writes:


--0003255735d2e8577104791da6f5
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I use the d1 & tango trunk & dwt-win.
there is a new dispose method for Object, and Dwt-win already have a dispose
width Event argument.

I try it with outer,  the error is :


x.d(17): Error: undefined identifier outer
x.d(17): Error: undefined identifier outer
x.d(17): Error: no property 'toString' for type 'int'
x.d(17): Error: function expected before (), not 1 of type int

--0003255735d2e8577104791da6f5
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

I use the d1 &amp; tango trunk &amp; dwt-win. <br>there is a new dispose me=
thod for Object, and Dwt-win already have a dispose width Event argument.<b=
r><br>I try it with outer,=C2=A0 the error is :<br><br><br>x.d(17): Error: =
undefined identifier outer<br>
x.d(17): Error: undefined identifier outer<br>x.d(17): Error: no property &=
#39;toString&#39; for type &#39;int&#39;<br>x.d(17): Error: function expect=
ed before (), not 1 of type int<br>

--0003255735d2e8577104791da6f5--



 Nov 24 2009



prev sibling next sibling parent  "Denis Koroskin" <2korden gmail.com>  writes:


On Tue, 24 Nov 2009 16:09:28 +0300, Long Chang <changedalone gmail.com>  
wrote:


 I use the d1 & tango trunk & dwt-win.
 there is a new dispose method for Object, and Dwt-win already have a  
 dispose
 width Event argument.

 I try it with outer,  the error is :


 x.d(17): Error: undefined identifier outer
 x.d(17): Error: undefined identifier outer
 x.d(17): Error: no property 'toString' for type 'int'
 x.d(17): Error: function expected before (), not 1 of type int



Try using older version of Tango (before introducing Object.dispose()  
method), or ask for help in digitalmars.DWT newsgroup. It's not a DMD but,  
it's just DWT is incompatible with Tango trunk at the moment (due to a  
breaking change in Tango).



 Nov 24 2009



prev sibling next sibling parent  "Steven Schveighoffer" <schveiguy yahoo.com>  writes:


On Tue, 24 Nov 2009 08:09:28 -0500, Long Chang <changedalone gmail.com>  
wrote:


 I use the d1 & tango trunk & dwt-win.
 there is a new dispose method for Object, and Dwt-win already have a  
 dispose
 width Event argument.

 I try it with outer,  the error is :


 x.d(17): Error: undefined identifier outer
 x.d(17): Error: undefined identifier outer
 x.d(17): Error: no property 'toString' for type 'int'
 x.d(17): Error: function expected before (), not 1 of type int



Hm... I've noticed that you can't just call outer, you have to use  
this.outer.  Does anyone know if this is expected behavior or a bug?  Why  
would it be expected behavior?

This code compiles for me and works on dmd 2.033


import std.stdio;

public interface Listener {
     void handleEvent (int);
}

class Test{
     Listener listener;
     this(){
         listener    = new class() Listener {
             public void handleEvent(int evt) {
                 this.outer.toString(evt);
             }
         };
     }

     void call()
     {
         listener.handleEvent(0);
     }
     void toString(int evt){
         writefln("event is %d", evt);
     }
}

void main(){
     (new Test()).call();
}

-Steve



 Nov 24 2009



prev sibling  parent  Long Chang <changedalone gmail.com>  writes:


 this.outer also. work on d1.
=C2=A0thank you guys.



 Nov 24 2009