public ISymbol Visit(SymbolResolverVisitor binder, ConstantNode constdec)
{
IType typeSymbol = null;
// Get the constant's type or assume it if not present
if (constdec.Type != null)
{
typeSymbol = SymbolHelper.GetTypeSymbol(binder.SymbolTable, binder.Inferrer, constdec.Type);
}
else
{
typeSymbol = binder.Inferrer.NewAnonymousType();
}
foreach (var definition in constdec.Definitions)
{
// Get the identifier name
var constantName = definition.Left.Value;
// Check if the symbol is already defined
if (binder.SymbolTable.HasVariableSymbol(constantName))
{
throw new SymbolException($"Symbol {constantName} is already defined.");
}
// If it is a variable definition, visit the right-hand side expression
var rhsSymbol = definition.Right?.Visit(binder);
if (rhsSymbol != null && !(rhsSymbol is IPrimitive))
{
throw new SymbolException($"The expression to initialize '{constantName}' must be constant");
}
// Create the new symbol for the variable
var boundSymbol = binder.SymbolTable.AddNewVariableSymbol(constantName, typeSymbol, Access.Public, Storage.Constant);
if (typeSymbol is Anonymous asym)
{
binder.Inferrer.TrackSymbol(asym, boundSymbol);
}
}
return(null);
}
public ISymbol Visit(SymbolResolverVisitor visitor, ObjectPropertyNode node)
{
var storage = SymbolHelper.GetStorage(node.Information.Mutability);
// Visit the property's value node
var rhsSymbol = visitor.Visit(node.Value);
if (rhsSymbol != null)
{
visitor.SymbolTable.AddNewVariableSymbol(node.Name.Value, rhsSymbol.GetTypeSymbol(), Access.Public, storage);
return(rhsSymbol);
}
var typeSymbol = SymbolHelper.GetTypeSymbol(visitor.SymbolTable, visitor.Inferrer, node.Information.Type);
// Create the symbol for the object's property
visitor.SymbolTable.AddNewVariableSymbol(node.Name.Value, typeSymbol, Access.Public, storage);
return(typeSymbol);
}