• Russel Winder (11/11) Mar 25 2011 It appears that DMD barfs on files with - in the file name. Why?
• Vladimir Panteleev (10/11) Mar 25 2011 Do you mean, why doesn't DMD try to work around the problem automaticall...
• Russel Winder (18/28) Mar 25 2011 =20
• Vladimir Panteleev (11/16) Mar 25 2011 Lacking a module declaration as is your case, what would the
• Steven Schveighoffer (20/37) Mar 25 2011 Every character except '/' is valid in a file name. In D, the module na...
• Walter Bright (8/15) Mar 25 2011 The compiler synthesizes the module name from the file name. If the file...

Russel Winder <russel russel.org.uk> writes:

It appears that DMD barfs on files with - in the file name.  Why?

--=20
Russel.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder ekiga.n=
et
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel russel.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

"Vladimir Panteleev" <vladimir thecybershadow.net> writes:

On Fri, 25 Mar 2011 13:05:39 +0200, Russel Winder <russel russel.org.uk>  
wrote:

 It appears that DMD barfs on files with - in the file name.  Why?

Do you mean, why doesn't DMD try to work around the problem automatically  
(e.g. by substituting/removing invalid characters in the module  
identifier)? The error message answers your verbatim question.

"test-file-name.d: Error: module test-file-name has non-identifier  
characters in filename, use module declaration instead"

-- 
Best regards,
  Vladimir                            mailto:vladimir thecybershadow.net

Russel Winder <russel russel.org.uk> writes:

On Fri, 2011-03-25 at 13:10 +0200, Vladimir Panteleev wrote:
 On Fri, 25 Mar 2011 13:05:39 +0200, Russel Winder <russel russel.org.uk> =

=20
 wrote:
=20
 It appears that DMD barfs on files with - in the file name.  Why?

=20
 Do you mean, why doesn't DMD try to work around the problem automatically=

 =20
 (e.g. by substituting/removing invalid characters in the module =20
 identifier)? The error message answers your verbatim question.

- is a perfectly valid character in a file name, well on Posix compliant
systems anyway.  The question is why D, aping Java, imposes restrictions
when there is no need.

 "test-file-name.d: Error: module test-file-name has non-identifier =20
 characters in filename, use module declaration instead"

The real irritant for me is that the file in question has one function,
main,  there is nothing to do with modules going on here.

--=20
Russel.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder ekiga.n=
et
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel russel.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

"Vladimir Panteleev" <vladimir thecybershadow.net> writes:

On Fri, 25 Mar 2011 13:27:10 +0200, Russel Winder <russel russel.org.uk>  
wrote:

 - is a perfectly valid character in a file name, well on Posix compliant
 systems anyway.  The question is why D, aping Java, imposes restrictions
 when there is no need.

Lacking a module declaration as is your case, what would the  
auto-generated module name be? I'd reckon it'd be pretty much always not  
what the programmer expected. Allowing symbols like - in module names  
would complicate parsing, I'd imagine.

 The real irritant for me is that the file in question has one function,
 main,  there is nothing to do with modules going on here.

The compiler doesn't know that that module will never be imported by  
anything. What's the problem with adding a module declaration?

-- 
Best regards,
  Vladimir                            mailto:vladimir thecybershadow.net

"Steven Schveighoffer" <schveiguy yahoo.com> writes:

On Fri, 25 Mar 2011 07:27:10 -0400, Russel Winder <russel russel.org.uk>  
wrote:

 On Fri, 2011-03-25 at 13:10 +0200, Vladimir Panteleev wrote:
 On Fri, 25 Mar 2011 13:05:39 +0200, Russel Winder <russel russel.org.uk>
 wrote:

 It appears that DMD barfs on files with - in the file name.  Why?

 Do you mean, why doesn't DMD try to work around the problem  
 automatically
 (e.g. by substituting/removing invalid characters in the module
 identifier)? The error message answers your verbatim question.

 - is a perfectly valid character in a file name, well on Posix compliant
 systems anyway.  The question is why D, aping Java, imposes restrictions
 when there is no need.

Every character except '/' is valid in a file name.  In D, the module name  
must be a valid symbol, and also the name of the file you import to get  
that module.

It's as simple as "don't name your files with non-valid symbol  
characters."  It's the way the language is designed, and if that's too  
much of a burden, then don't use the language.

 "test-file-name.d: Error: module test-file-name has non-identifier
 characters in filename, use module declaration instead"

 The real irritant for me is that the file in question has one function,
 main,  there is nothing to do with modules going on here.

Every compiled d file is a module, the compiler uses the file name if you  
don't provide one.  Note it is not advisable to name your modules  
differently than the file name, because the module name is also used to  
import the file.  This means, if you named a file differently from a  
module, importing the module will fail to find it.  However, standalone  
single-file programs should not be an issue.

This should compile:

test-file-name.d:

module testfilename;

void main()
{}

-Steve

Walter Bright <newshound2 digitalmars.com> writes:

On 3/25/2011 4:10 AM, Vladimir Panteleev wrote:
 On Fri, 25 Mar 2011 13:05:39 +0200, Russel Winder <russel russel.org.uk> wrote:

 It appears that DMD barfs on files with - in the file name. Why?

 Do you mean, why doesn't DMD try to work around the problem automatically (e.g.
 by substituting/removing invalid characters in the module identifier)? The
error
 message answers your verbatim question.

 "test-file-name.d: Error: module test-file-name has non-identifier characters
in
 filename, use module declaration instead"


The compiler synthesizes the module name from the file name. If the file name 
has non-valid module identifiery characters in it, it can't do that. Hence the 
error message. The solution is to either use a module declaration to set the 
module name, or rename the file to be a valid module identifier.

The filename=modulename and directory=packagename equivalence allows for the 
compiler to simply find and load imported modules. Without it you'd need some 
complex database to map the module names to files.