Re: legal identifier check
BCS wrote: Hello Saaa, You have to write it yourself. Here's a good starting point: http://www.digitalmars.com/d/1.0/lex.html#identifier Yes, that was my starting point and it seemed quite complex, thus my question :) I think I'll stay with my simple check for now as it isn't really necessary to be as strict as D's identifiers. Just thought that if there was an easy check I'd implement that. Thanks anyways everybody. if you are only working with ASCII: use the regex `_A-Za-z[_A-Za-z0-9]*` Shouldn't that be [_A-Za-z][_A-Za-z0-9]*? Jerome -- mailto:jeber...@free.fr http://jeberger.free.fr Jabber: jeber...@jabber.fr signature.asc Description: OpenPGP digital signature
Re: legal identifier check
Reply to Jérôme, BCS wrote: Hello Saaa, You have to write it yourself. Here's a good starting point: http://www.digitalmars.com/d/1.0/lex.html#identifier Yes, that was my starting point and it seemed quite complex, thus my question :) I think I'll stay with my simple check for now as it isn't really necessary to be as strict as D's identifiers. Just thought that if there was an easy check I'd implement that. Thanks anyways everybody. if you are only working with ASCII: use the regex `_A-Za-z[_A-Za-z0-9]*` Shouldn't that be [_A-Za-z][_A-Za-z0-9]*? Jerome Oops :(
Re: legal identifier check
Saaa wrote:
Is there a function to check whether some string is a legal identifier?
Sure.
static if(is(typeof({ /* code to be checked for validity goes here */ })))
...
That is a compile time check, right?
I meant a runtime check.
How does that piece of code work anyways :D
static if = compile time if
is = comparison between two non value things?
typeof = returns the type
I know use this (in the ddata thread above):
foreach(char c; identifier)
{
if( !inPattern( c, `_a-zA-Z0-9`) )
{
return false;
}
}
Re: legal identifier check
Saaa wrote:
...
I know use this (in the ddata thread above):
foreach(char c; identifier)
{
if( !inPattern( c, `_a-zA-Z0-9`) )
{
return false;
}
}
That's not correct. http://digitalmars.com/d/1.0/lex.html#identifier
Re: legal identifier check
Hello Saaa,
static if(is(typeof({ /* code to be checked for validity goes here */
}))) ...
How does that piece of code work anyways :D
that checks to see if the {...} is a valid delegate literal by using is()
to see if semantic checks fail.
Re: legal identifier check
I know use this (in the ddata thread above):
foreach(char c; identifier)
{
if( !inPattern( c, `_a-zA-Z0-9`) )
{
return false;
}
}
That's not correct. http://digitalmars.com/d/1.0/lex.html#identifier
Which is why I asked for it here :)
It isn't extremely important as it is just a data format, but I would like
to be as D as possible.
Re: legal identifier check
Hello Saaa,
static if(is(typeof({ /* code to be checked for validity goes here */
}))) ...
How does that piece of code work anyways :D
that checks to see if the {...} is a valid delegate literal by using is()
to see if semantic checks fail.
Ah, I see. Can this be done at runtime?
Re: legal identifier check
Saaa wrote:
Hello Saaa,
static if(is(typeof({ /* code to be checked for validity goes here */
}))) ...
How does that piece of code work anyways :D
that checks to see if the {...} is a valid delegate literal by using is()
to see if semantic checks fail.
Ah, I see. Can this be done at runtime?
You have to write it yourself. Here's a good starting point:
http://www.digitalmars.com/d/1.0/lex.html#identifier
Re: legal identifier check
You have to write it yourself. Here's a good starting point: http://www.digitalmars.com/d/1.0/lex.html#identifier Yes, that was my starting point and it seemed quite complex, thus my question :) I think I'll stay with my simple check for now as it isn't really necessary to be as strict as D's identifiers. Just thought that if there was an easy check I'd implement that. Thanks anyways everybody.
Re: legal identifier check
Hello Saaa, if you are only working with ASCII: use the regex `_A-Za-z[_A-Za-z0-9]*` Is that better than the inPattern way? yes, it correctly rejects numbers at the start and should be faster as well. Of course, should have looked longer at the regex line, thanks!
Re: legal identifier check
BCS wrote: Hello Saaa, You have to write it yourself. Here's a good starting point: http://www.digitalmars.com/d/1.0/lex.html#identifier Yes, that was my starting point and it seemed quite complex, thus my question :) I think I'll stay with my simple check for now as it isn't really necessary to be as strict as D's identifiers. Just thought that if there was an easy check I'd implement that. Thanks anyways everybody. if you are only working with ASCII: use the regex `_A-Za-z[_A-Za-z0-9]*` Isn't there an isUniAlpha function in both Phoboses and in Tango?
legal identifier check
Is there a function to check whether some string is a legal identifier?
Re: legal identifier check
Saaa wrote:
Is there a function to check whether some string is a legal identifier?
Sure.
static if(is(typeof({ /* code to be checked for validity goes here */ }))) ...
