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[SOLVED] forbit brackets in xbase expression [message #1728744]

Wed, 06 April 2016 22:21

Michael Budnick

Messages: 2
Registered: April 2016

Junior Member

Hello,

in my DSL I use the xbase XExpressions.
Under some conditions this expression should not allow brackets to change the order of operations.
So I will implement a @Check in my Validator-class.

How can I find out if a expression contains brackets?
I see the leftOperand and rightOperand but not if this operand is surrounded with brackets.

Thanks for any help,
Michael

[Updated on: Fri, 08 April 2016 07:16]

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Re: forbit brackets in xbase expression [message #1728831 is a reply to message #1728744]

Thu, 07 April 2016 17:14

Christian Dietrich

Messages: 14062
Registered: July 2009

Senior Member

you may use nodemodelutils and traverse the expression.
you should not find nodes for the ( and ) keyword

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Re: forbit brackets in xbase expression [message #1728872 is a reply to message #1728831]

Fri, 08 April 2016 07:15

Michael Budnick

Messages: 2
Registered: April 2016

Junior Member

Thanks

	for (leaf: NodeModelUtils.findActualNodeFor(expression).leafNodes) {
		if ('('.equals(NodeModelUtils.getTokenText(leaf))) {
			errorBrackedNotAllowed()
		}
	}

solved it.

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