public virtual void VisitVariableReferenceExpression(VariableReferenceExpression expression)
{
VisitNode(expression.Identifier);
VisitCommonExpNodes(expression);
}
public override bool VisitVariableReferenceExpression(VariableReferenceExpression varRef)
{
if (varRef.Identifier.Type == IdentifierType.Local)
{
String name = varRef.Identifier.Name;
ISymbolTable table = varRef.SymbolTable;
// It might be a variable or might be something else.
// First of all, let's see whether it is a var
bool isDefinedAsVar = false;
isDefinedAsVar = varRef.SymbolTable.IsDefined(name);
if (!isDefinedAsVar)
{
if (table.ScopeType == ScopeType.Block || table.ScopeType == ScopeType.Compound)
{
isDefinedAsVar = table.IsDefinedInParent(name);
}
}
if (!isDefinedAsVar)
{
// Ok, this might be two things now:
// an undeclared variable, a type ref or a member access... Let's check the type graph
TypeDefinition typeDef = varRef.SymbolTable.CurrentTypeDefinition;
System.Diagnostics.Debug.Assert( typeDef != null );
if (typeDef.HasInstanceMember(name) || typeDef.HasStaticMember(name))
{
// Wow! Finally
// TODO: Replace node by MemberAccess or method invocation, depending on the case
}
else
{
NamespaceGraph nsGraph = table.TypeGraphView.GetNamespace( name );
if (nsGraph == null)
{
TypeDefinition typedef = table.TypeGraphView.GetType( name );
if (typedef == null)
{
errorReport.Error( "TODOFILENAME", varRef.Position, "'{0}' undeclared identifier", name );
}
}
}
}
}
return base.VisitVariableReferenceExpression(varRef);
}
public void AddVarRef(VariableReferenceExpression vre)
{
varRefs.Add(vre);
}
public VariableReferenceExpression varref() //throws RecognitionException, TokenStreamException
{
VariableReferenceExpression vre;
Identifier ident = null; vre = null;
ident=name();
if (0==inputState.guessing)
{
vre = new VariableReferenceExpression(ident);
}
return vre;
}
public override void VisitVariableReferenceExpression(VariableReferenceExpression expression)
{
nodeStack.Push( CurrentNode.Nodes.Add("VariableReferenceExpression - " + expression.Identifier.Name));
CurrentNode.Tag = expression;
base.VisitVariableReferenceExpression(expression);
nodeStack.Pop();
}