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Whitespace in OpCompare's LessThan in Xbase grammar [message #1750002]

Thu, 15 December 2016 02:35

Larry LeBron

Messages: 124
Registered: October 2015

Senior Member

I was having issues implementing my own versions of boolean comparison operators in my grammar, which extends Xbase.

I was having issues with "<=" only, while all the rest were working fine.

I looked at Xbase and found that the OpCompare rule is written as:

OpCompare:
	'>=' | '<' '=' | '>' | '<' ;

The less than equals operator is written to allow whitespace between the symbols. When I replicated it in my grammar, my problems went away. What is the reason for this?

[Updated on: Thu, 15 December 2016 03:09]

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