protected JSVariable GetConstructedReference(JSPassByReferenceExpression pbr)
{
JSVariable referentVariable;
JSExpression referent;
if (!JSReferenceExpression.TryMaterialize(JSIL, pbr.Referent, out referent))
{
// If the reference can be dereferenced, but cannot be materialized, it is
// a constructed reference.
if (JSReferenceExpression.TryDereference(JSIL, pbr.Referent, out referent))
{
referentVariable = referent as JSVariable;
// Ignore variables we previously transformed.
if ((referentVariable != null) && TransformedVariables.Contains(referentVariable.Identifier))
{
return(null);
}
return(referentVariable);
}
else
{
return(null);
}
}
referentVariable = referent as JSVariable;
if (referentVariable == null)
{
return(null);
}
// Ignore variables we previously transformed.
if (TransformedVariables.Contains(referentVariable.Identifier))
{
return(null);
}
// If the variable does not match the one in the dictionary, it is a constructed
// reference to a parameter.
if (!referentVariable.Equals(Variables[referentVariable.Identifier]))
{
// If the parameter is a reference, we don't care about it.
if (Variables[referentVariable.Identifier].IsReference)
{
return(null);
}
else
{
return(referentVariable);
}
}
return(null);
}
public void VisitNode(JSPassByReferenceExpression byref)
{
JSExpression referent;
if (JSReferenceExpression.TryMaterialize(JSIL, byref.Referent, out referent))
{
Output.Comment("ref");
Visit(referent);
}
else
{
Output.Identifier("JSIL.UnmaterializedReference", null);
Output.LPar();
Output.RPar();
}
}
protected JSVariable GetReferentVariable(JSPassByReferenceExpression pbr)
{
JSVariable referentVariable;
JSExpression referent;
if (!JSReferenceExpression.TryMaterialize(JSIL, pbr.Referent, out referent))
{
if (JSReferenceExpression.TryDereference(JSIL, pbr.Referent, out referent))
{
referentVariable = referent as JSVariable;
return(referentVariable);
}
else
{
return(null);
}
}
referentVariable = referent as JSVariable;
return(referentVariable);
}
