www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.learn - Regex

reply Vladimir Voinkov <v.voinkov gmail.com> writes:
std.regex can't be used in compile time function call. It's quite frustrating...
Jul 09 2009
parent reply BLS <windevguy hotmail.de> writes:
Vladimir Voinkov wrote:

 std.regex can't be used in compile time function call. It's quite
frustrating...


see dsource.org .. afaik there is a compile time regex project. hth
Jul 09 2009
parent reply Robert Fraser <fraserofthenight gmail.com> writes:
BLS wrote:

 Vladimir Voinkov wrote:

 std.regex can't be used in compile time function call. It's quite 
 frustrating...


 
 see dsource.org .. afaik there is a compile time regex project. hth


http://www.dsource.org/projects/scregexp

But the generated functions aren't CTFE-compatible AFAIK. A CTFE regex 
engine would be um... "tricky" to say the least. About 50GB of memory 
tricky (on DMD, LDC has a GC... though, it's still just as slow with 
CTFE). Really, if you need that level of code manipulation, a 
preprocessor is probably a better choice.
Jul 09 2009
parent reply BLS <windevguy hotmail.de> writes:
Robert Fraser wrote:

 BLS wrote:

 Vladimir Voinkov wrote:

 std.regex can't be used in compile time function call. It's quite 
 frustrating...


 see dsource.org .. afaik there is a compile time regex project. hth


 
 http://www.dsource.org/projects/scregexp
 
 But the generated functions aren't CTFE-compatible AFAIK. A CTFE regex 
 engine would be um... "tricky" to say the least. About 50GB of memory 
 tricky (on DMD, LDC has a GC... though, it's still just as slow with 
 CTFE). Really, if you need that level of code manipulation, a 
 preprocessor is probably a better choice.


Ouch!
Remaining question :

 std.regex can't be used in compile time function call....






Why this* don't work for you ?
*  http://www.digitalmars.com/d/2.0/templates-revisited.html
(middle of the document / Regular Expression Compiler)
Jul 10 2009
next sibling parent Vladimir Voinkov <v.voinkov gmail.com> writes:
 see dsource.org .. afaik there is a compile time regex project. hth


 
 http://www.dsource.org/projects/scregexp
 
 But the generated functions aren't CTFE-compatible AFAIK. A CTFE regex 
 engine would be um... "tricky" to say the least. About 50GB of memory 
 tricky (on DMD, LDC has a GC... though, it's still just as slow with 
 CTFE). Really, if you need that level of code manipulation, a 
 preprocessor is probably a better choice.


 Ouch!
 Remaining question :
  >>> std.regex can't be used in compile time function call....
 
 Why this* don't work for you ?
 *  http://www.digitalmars.com/d/2.0/templates-revisited.html
 (middle of the document / Regular Expression Compiler)
 


I have seen the article and really inspired by the language might. That is why
I'm surprised b the std.regex, the library codeveloped by Andrei!

Thanks for the scregexp link. Looks promising.
Jul 11 2009
prev sibling parent Lutger <lutger.blijdestijn gmail.com> writes:
BLS wrote:


 Robert Fraser wrote:

 BLS wrote:

 Vladimir Voinkov wrote:

 std.regex can't be used in compile time function call. It's quite
 frustrating...


 see dsource.org .. afaik there is a compile time regex project. hth


 
 http://www.dsource.org/projects/scregexp
 
 But the generated functions aren't CTFE-compatible AFAIK. A CTFE regex
 engine would be um... "tricky" to say the least. About 50GB of memory
 tricky (on DMD, LDC has a GC... though, it's still just as slow with
 CTFE). Really, if you need that level of code manipulation, a
 preprocessor is probably a better choice.


 
 Ouch!
 Remaining question :
  >>> std.regex can't be used in compile time function call....
 
 Why this* don't work for you ?
 *  http://www.digitalmars.com/d/2.0/templates-revisited.html
 (middle of the document / Regular Expression Compiler)


Because it compiles the regex, but matching is still done at runtime? Or is 
it CTFE compilable? iirc CTFE wasn't around at the time this regex compiler 
was written.
Jul 11 2009