Retrieve referenced LabelSymbol of GotoStatementSyntax

Question

Hi,

in the example below I want to infer that the goto statement <goto case 1;> (of type GotoStatementSyntax) references the case switch label <case 1:> (of type SwitchLabelSyntax)

switch(i) {
 case 1:
  // do something
  break;
 case 2:
  goto case 1;
  break;
}

I therefor ask for the declared/referenced symbol (of type LabelSymbol). Currently this is what I want do:

SemanticModel semanticModel;
SwitchLabelSyntax switchLabelSyntax;
GotoStatementSyntax gotoStmt;

var switchLabel = semanticModel.GetDeclaredSymbol(switchLabelSyntax)
var gotoLabel = (LabelSymbol) semanticModel.GetSymbolInfo(gotoStmt).Symbol;

But this does not work, since I am not allowed to pass gotoStmt to GetSymbolInfo().

I can retrieve the gotoLabel if gotoStmt references a "normal" label (goto A;) with

var gotoLabel = (LabelSymbol) semanticModel.GetSymbolInfo(gotoStmt.Expression).Symbol;

So how would I do that in the first case?

Answer 1

This is something that we would like to support, but hasn't been a high enough priority to do yet.

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-- Kevin Pilch-Bisson [e-mail]

Answer 2

Well thanks for the clarification.

As a workaround I will write a custom syntax visitor to match <goto case X> expressions with the  corresponding <case X> labels.

EDIT: If I have time to implement this I will post the workaround here