D and file names

[Walter Bright]

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