public static Assignment Parse(ref string input, Namespace ns)
{
var orgInput = input;
var ident = Identifier.Parse(ref input);
if (ident == null)
return null;
Whitespace.Parse(ref input);
if (input[0] != '=')
return null;
input = input.Substring(1);
Whitespace.Parse(ref input);
var expr = Expression.Parse(ref input, ns);
if (ident.Value.Contains("."))
{
input = orgInput;
return null;
}
var id = ns.GetScope().Add(ident.Value, expr.ReturnType);
return new Assignment(ident, expr, id);
}
public static Variable Parse(ref string input, Namespace ns)
{
var ident = Identifier.Parse(ref input);
if (ident == null)
return null;
return ns.GetScope().Get(ident.Value);
}