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Handling of backslash [message #1848969]

Mon, 27 December 2021 14:29

Akira Tanaka

Messages: 98
Registered: March 2010

Member

Dear all,

I am working on an Xtext project whose target/instance model is an XML document. When creating a model (XML document), it needs to accept a string including backslash (\), and this backslash is not an escape character. For instance, the XML document may contain something like below.
...
<script>
abc\def
</script>
...

Is it possible to define an Xtext grammar that supports above?

I would appreciate any advice.

Thank you very much in advance.

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Re: Handling of backslash [message #1848973 is a reply to message #1848969]

Mon, 27 December 2021 17:42

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

Yes.

If you don;'t like the half-built-in STRING token typically imposed by Terminal.xtext, redefine it or define a different token.

Make sure you define a suitable replacement for e.g. DoubleQuotedStringConverter that doesn't interpret backslash, but probably does support > etc. You may find suitable encode/decode utility routines perhaps in the EMF XML support, perhaps in the SAX parser.

Regards

Ed Willink

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