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xtext get parser rule name based on context [message #1742755]

Wed, 07 September 2016 13:22

Sachin Samaram is currently offline

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Hi,

Can anyone tell me how to get the parser rule for the context below?
Here in the below I am getting linkText but I am not able to get parser rule name of that particular linkText.

class JPLHyperlinkHelper extends LinkingDiagnosticMessageProvider {
override DiagnosticMessage getUnresolvedProxyMessage(ILinkingDiagnosticContext context) {
val EClass referenceType = context.getReference().getEReferenceType();
var String linkText = "";
try {
linkText = context.getLinkText();
} catch (IllegalNodeException e){
linkText = e.getNode().getText();
}
if(!linkText.startsWith("sm_") && !linkText.startsWith("dm_") && !linkText.startsWith("jm_")) {
val String msg = "Couldn't resolve reference to " + referenceType.getName() + " '" + linkText + "'.";
return new DiagnosticMessage(msg, Severity.WARNING, Diagnostic.LINKING_DIAGNOSTIC);
}
}
}

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Re: xtext get parser rule name based on context [message #1742768 is a reply to message #1742755]

Wed, 07 September 2016 13:51

Christian Dietrich is currently offline

Christian Dietrich

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simply ask the context for its object and the you nodemodelutil to access the node model and then ask the nodes for their grammar elements does not work?

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Re: xtext get parser rule name based on context [message #1742770 is a reply to message #1742768]

Wed, 07 September 2016 13:56

Sachin Samaram is currently offline

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Messages: 271
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I tried but no luck. So which method should I use to get its object?

I used NodeModelUtil.getNode

val ICompositeNode node = NodeModelUtils.getNode(context.context);
println("Node :::::::::::::::: "+node.grammarElement)

[Updated on: Wed, 07 September 2016 14:06]

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Re: xtext get parser rule name based on context [message #1742775 is a reply to message #1742770]

Wed, 07 September 2016 14:11

Sachin Samaram is currently offline

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Oh shoot.

val ICompositeNode node = NodeModelUtils.getNode(context.context);
println("Node :::::::::::::::: "+node.text)

is working

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Re: xtext get parser rule name based on context [message #1742776 is a reply to message #1742775]

Wed, 07 September 2016 14:13

Christian Dietrich is currently offline

Christian Dietrich

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Messages: 12373
Registered: July 2009

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and what is the nodes grammar element?

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Re: xtext get parser rule name based on context [message #1742777 is a reply to message #1742776]

Wed, 07 September 2016 14:19

Sachin Samaram is currently offline

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RuleCallImpl

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Re: xtext get parser rule name based on context [message #1742779 is a reply to message #1742777]

Wed, 07 September 2016 14:20

Christian Dietrich is currently offline

Christian Dietrich

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that should give you a rule

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Re: xtext get parser rule name based on context [message #1742780 is a reply to message #1742779]

Wed, 07 September 2016 14:26

Sachin Samaram is currently offline

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No. I am just getting complete line text and checking whether it is preceding by any of the parser rules or not?

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Re: xtext get parser rule name based on context [message #1742782 is a reply to message #1742780]

Wed, 07 September 2016 14:35

Christian Dietrich is currently offline

Christian Dietrich

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i dont get that can you post the code you try to do and how the grammar place you are looking for differes from others?

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Re: xtext get parser rule name based on context [message #1742783 is a reply to message #1742782]

Wed, 07 September 2016 14:47

Sachin Samaram is currently offline

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To be frank. I don't know how to do this! I am trying all possiblities

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Re: xtext get parser rule name based on context [message #1742787 is a reply to message #1742783]

Wed, 07 September 2016 14:59

Christian Dietrich is currently offline

Christian Dietrich

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how does the grammar situation look like you wish to detect?

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Re: xtext get parser rule name based on context [message #1742789 is a reply to message #1742787]

Wed, 07 September 2016 15:10

Sachin Samaram is currently offline

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Suppose I have code like

vars a=b

test = abc()

call abc()

proc abc()
{
}

Here I am getting each line which contains cross reference and if the line starts with call or simple expression I want to show warning else ignoring the warning.

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Re: xtext get parser rule name based on context [message #1742790 is a reply to message #1742789]

Wed, 07 September 2016 15:13

Christian Dietrich is currently offline

Christian Dietrich

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but how do the rules for that look like?

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Re: xtext get parser rule name based on context [message #1742801 is a reply to message #1742790]

Wed, 07 September 2016 16:54

Sachin Samaram is currently offline

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If I understand rule looks like;

org.eclipse.xtext.nodemodel.impl.CompositeNodeWithSemanticElement@1ae4e6e3

If not could you please tell me what should I send?

My code is:

class JPLHyperlinkHelper extends LinkingDiagnosticMessageProvider {
override DiagnosticMessage getUnresolvedProxyMessage(ILinkingDiagnosticContext context) {
val EClass referenceType = context.getReference().getEReferenceType();
var String linkText = "";
try {
linkText = context.getLinkText();
} catch (IllegalNodeException e){
linkText = e.getNode().getText();
}
val ICompositeNode node = NodeModelUtils.getNode(context.context);
println("Node:::: "+node)
if(!linkText.startsWith("sm_") && !linkText.startsWith("dm_") && !linkText.startsWith("jm_") && node.text.trim.startsWith("call")) {
val String msg = "Couldn't resolve reference to " + referenceType.getName() + " '" + linkText + "'.";
return new DiagnosticMessage(msg, Severity.WARNING, Diagnostic.LINKING_DIAGNOSTIC);
}
}
}

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Re: xtext get parser rule name based on context [message #1742802 is a reply to message #1742801]

Wed, 07 September 2016 16:58

Christian Dietrich is currently offline

Christian Dietrich

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i am still dont understand what are the different situations you want to differentiate?

is is ObjectA: ref=[X] from ObjectB: ref=[Y]

or ObjectA: ref=[X] from ObjectB: ref=[X]

or ObjectA: ref=[X] ref2=[Y]

....

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Re: xtext get parser rule name based on context [message #1742804 is a reply to message #1742802]

Wed, 07 September 2016 17:09

Sachin Samaram is currently offline

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Registered: April 2016

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ObjectA: ref=[X] from ObjectB: ref=[X]
and
ObjectA: ref=[X] ref2=[Y]

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Re: xtext get parser rule name based on context [message #1742806 is a reply to message #1742804]

Wed, 07 September 2016 17:14

Christian Dietrich is currently offline

Christian Dietrich

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why dont you then simply compare content.getReference() == MyDslPackage.Literals.OBJECT_A__X

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Re: xtext get parser rule name based on context [message #1742872 is a reply to message #1742806]

Thu, 08 September 2016 10:59

Sachin Samaram is currently offline

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Yes. I will try.

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