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infinite loop in DocumentTokenSource [message #1578710]

Thu, 22 January 2015 15:19

Luis De Bello

Messages: 95
Registered: January 2015

Member

Hi guys,

I am creating a grammar and I had to created my own lexer with context, so I had splitted the lexer and the parser and modified the .g from lexer in order to include some members to handle the context, it works ok however from the editor I am getting an infinite loop in some cases.

The issue happens because the DocumentTokenSource only repair the entry with changes and in some cases my grammar is not able to be parsed, I want to use the "BacktrackingLexerDocumentTokenSource" to check if that solve my issue.

Do you know how to configure guide to inject this object instead the default one?

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Re: infinite loop in DocumentTokenSource [message #1578765 is a reply to message #1578710]

Thu, 22 January 2015 16:00

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

hi

does the straight forward binding not work? something like

public class MyDslUiModule extends org.xtext.example.mydsl5.ui.AbstractMyDslUiModule {
	public MyDslUiModule(AbstractUIPlugin plugin) {
		super(plugin);
	}
	
	public Class<? extends DocumentTokenSource> bindDocumentTokenSource() {
		return BacktrackingLexerDocumentTokenSource.class;
	}
}

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

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Re: infinite loop in DocumentTokenSource [message #1578787 is a reply to message #1578765]

Thu, 22 January 2015 16:15

Luis De Bello

Messages: 95
Registered: January 2015

Member

Christian,

That works great I check the methods but I didn't see any method to override I was not aware of this behaviour of adding methods starting with keywords "bind", "provide", "configure"

Thanks for the tip

Regards,
Luis

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