public override AstNode Visit(VariableReference node)
{
// Get the node type.
IChelaType variableType = node.GetNodeType();
// Ignore type references, namespaces and functions.
if (variableType.IsMetaType() || variableType.IsNamespace() ||
variableType.IsFunctionGroup() || variableType.IsFunction())
{
return(node);
}
// The type must be a reference.
variableType = DeReferenceType(variableType);
// Now, it must be a constant.
if (!variableType.IsConstant())
{
Error(node, "constant initialization can't reference no constant variables.");
}
// The node value, must be the constant variable.
FieldVariable constantVar = (FieldVariable)node.GetNodeValue();
// Find the corresponding constant data.
ConstantData depData;
if (constants.TryGetValue(constantVar, out depData))
{
currentConstant.AddDependency(depData);
}
return(node);
}