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Home » Modeling » TMF (Xtext) » Parsing *some* comments
Parsing *some* comments [message #1752953] Tue, 31 January 2017 09:32
Chris Bryan is currently offline Chris BryanFriend
Messages: 3
Registered: April 2016
Junior Member
I'm trying to parse a language where some (but not all) single-line comments are semantically important.


	'--' 'Revision' INT;

terminal INT returns ecore::EInt:
	'-'? ('0'..'9' | '_')+;
terminal SL_COMMENT:
	'--' !('\n' | '\r')* NL?;
terminal NL:
	('\r'? '\n') (WS | '\r' | '\n')*;

SL_COMMENT is *not* hidden.

I was hoping that the '--' keyword in Revision would override the SL_COMMENT terminal at lexing, but this doesn't seem to be the case. Can anyone explain why?
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