public void Visit(AdvancedReturnStatementNode node)
{
ValueAstEvaluator valueEvaluator = new ValueAstEvaluator(sender);
MathExpressionAstEvaluator exprEvaluator = new MathExpressionAstEvaluator();
Cell cell = sender.GetCurrentCell();
Symbol sym = Stbl.st.Retrieve(node.Identifier.Label);
if (sym is StateSymbol s)
{
try
{
// Set state members
StateSymbol state = s.Copy();
foreach (ReturnMemberNode rNode in node.ReturnMembers)
{
MemberSymbol member = state.RetrieveMember(rNode.ID.Label);
switch (rNode.Value)
{
case ExpressionNode valueNode: member.SetValue(exprEvaluator.Visit(valueNode)); break;
case StringValueNode valueNode: member.SetValue(valueNode.Value); break;
default: throw new TheLanguageErrorException($"ReturnMember value cannot be of type \'{ rNode.Value.GetType().Name }\'");
}
}
sender.SetCell(cell, state);
}
catch (TheLanguageErrorException e) { throw new TheLanguageErrorException($"Return statement \'{ node.Identifier.Label }\'", e); }
}
else
{
throw new TheLanguageErrorException($"Return statement. Unexpected type { sym } expected State");
}
sender.ReturnStatementHasBeenHit = true;
}
