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\n in xtext [message #669696]

Wed, 11 May 2011 08:10

adrian

Messages: 93
Registered: August 2009

Member

Hi all ,
In my grammer I define a terminal rule as :
terminal body : <body> -> </body>
so I can define any java expression inside this body.
The problem happens when I define for example:
<body> String NL="\n"; </body> I lose the expression \n and is mapped to 'new line' so when I extract my model I have :

<body> String NL="
"; </body>
Which is not what I want
any idea ? thanks in advance

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Re: \n in xtext [message #669707 is a reply to message #669696]

Wed, 11 May 2011 08:41

Luong

Messages: 8
Registered: March 2011

Junior Member

Hi!
Are you using the default Terminal rules? I mean org.eclipse.xtext.common.Terminals.

If so, you should write "YourString\\n".

L.

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Re: \n in xtext [message #669711 is a reply to message #669707]

Wed, 11 May 2011 08:58

adrian

Messages: 93
Registered: August 2009

Member

Hi Luong,
Yes I m using the default terminal rules

[Updated on: Wed, 11 May 2011 08:59]

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Re: \n in xtext [message #669718 is a reply to message #669696]

Wed, 11 May 2011 09:20

Luong

Messages: 8
Registered: March 2011

Junior Member

Allright and writing "\\n" instead of "\n" had worked?
Smile

[Updated on: Wed, 11 May 2011 09:23]

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Re: \n in xtext [message #669723 is a reply to message #669718]

Wed, 11 May 2011 09:31

adrian

Messages: 93
Registered: August 2009

Member

Not really because I must intercede manually to add \
I wonder if there is a possibility to change the default \n for xtext to be different to java for example \$ will be the new line expression in xtext ??

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Re: \n in xtext [message #669729 is a reply to message #669696]

Wed, 11 May 2011 09:23

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Hi Piko,

you'll have to provide an own value converter for your 'body' terminal
rule which does not replace escaped text.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 11.05.11 10:10, schrieb piko:
> Hi all ,
> In my grammer I define a terminal rule as :
> terminal body : <body> -> </body> so I can define any java expression
> inside this body.
> The problem happens when I define for example:
> <body> String NL="\n"; </body> I lose the expression \n and
> is mapped to 'new line' so when I extract my model I have :
>
> <body> String NL="
> "; </body>
> Which is not what I want any idea ? thanks in advance

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Re: \n in xtext [message #669730 is a reply to message #669723]

Wed, 11 May 2011 09:39

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Piko,

you'll have to implement a value converter for your terminal rule.
Please refer to the docs for details.

Hope that helps,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 11.05.11 11:31, schrieb piko:
> Not really because I must intercede manually to add \
> I wonder if there is a possibility to change the default \n for xtext to
> be different to java for example \$ will be the
> new line expression in xtext ??

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