public bool Visit(CallableHeader node)
{
_symStack.Push(); //this will be function local namespace
var callable = new CallableSymbol(node.Name.ToString())
{
ReturnSymType = null
};
if (node.ReturnType != null)
{
node.ReturnType.Accept(this);
callable.ReturnSymType = _symStack.FindType(node.ReturnType.ToString());
_symStack.AddVariable(true, "result", callable.ReturnSymType);
}
foreach (var paramSection in node.ParamList)
{
paramSection.Accept(this);
foreach (var parameter in paramSection.ParamList)
{
callable.ParametersTypes.Add(new Tuple <string, SymType>(paramSection.ParamModifier,
_symStack.FindIdentInScope(parameter.ToString()).VarSymType));
}
}
callable.IsForward = true;
callable.Local = _symStack.Pop();
node.CallableSymbol = callable;
// if (!_symStack.PrepareFunction(callable))
// {
// throw new Exception(string.Format("({0}, {1}) semantic error: duplicate declaration of {2} '{3}' ",
// node.Name.Token.Line, node.Name.Token.Column,
// callable.ReturnSymType == null ? "procedure" : "function",
// node.GetSignature()));
// }
return(true);
}