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EMF Model Update Strategy [message #903674]

Fri, 24 August 2012 20:21

Stefan Kuhn

Messages: 8
Registered: July 2009

Junior Member

hi, could someone outline xtexts update strategy of the EMF model if parts of the text is changed? The documentation mentions that parts of the EMF model are replaced. What strategy does xtext use? What are the basic steps?

[Updated on: Mon, 27 August 2012 10:30]

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Re: EMF Model Update Strategy [message #904831 is a reply to message #903674]

Wed, 29 August 2012 08:29

Sven Efftinge

Messages: 1823
Registered: July 2009

Senior Member

Am 8/24/12 10:21 PM, schrieb Stefan Kuhn:
> hi, could someone outline xtexts update strategy of the EMF model if
> parts of the text is changed. The documentation mentions that parts of
> the EMF model are replaced. What strategy does xtext use? What are the
> basic steps?

From a certain change an entry point is computed, where the so called
partial parser can hook-in again (see PartialParsingHelper#reparse).
These points are mostly very coarse grained rule calls without
lookahead. The partial parsing is mostly optimizing changes in large models.

Why do you ask?

Sven

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