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about grammar [message #1069306]

Mon, 15 July 2013 16:27

Yueming Hong

Messages: 87
Registered: April 2013

Member

HI,

Inclusion:
'#include' '<' headFile = HeaderFile '>'
;

HeaderFile:
(QUALIFIED_NAME '/')* QUALIFIED_NAME '.h'
;

Why the editor does not accept code like: #include <a/b.h> ?
It only accepts #include <b.h>. Any idea to improve it ?

BTW, how can I use until token in xtext? just simply define it ?

terminal QUO:
'<' -> '>'
;

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Re: about grammar [message #1069326 is a reply to message #1069306]

Mon, 15 July 2013 17:13

Yueming Hong

Messages: 87
Registered: April 2013

Member

ANY help?

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Re: about grammar [message #1069343 is a reply to message #1069326]

Mon, 15 July 2013 17:52

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

is your QUALIFIED_NAME a terminal if so you are lost in lexical space.

Inclusion:
'#include' '<' headFile = HeaderFile '>'
;

HeaderFile:
(QUALIFIED_NAME '/')* QUALIFIED_NAME '.h'
;

QUALIFIED_NAME: ID("." ID)*;

works for me.

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: about grammar [message #1069371 is a reply to message #1069343]

Mon, 15 July 2013 19:06

Yueming Hong

Messages: 87
Registered: April 2013

Member

Sorry, MY mistake~!
I forgot that i had another similar terminal rule which led ambiguity~

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