public object VisitFunctionStmt(Stmt.Function stmt) { var function = new LoxFunction(stmt, environment, false); environment.Define(stmt.Name.Lexeme, function); return(null); }
public object VisitClassStmt(Stmt.Class stmt) { object superclass = null; if (stmt.Superclass != null) { superclass = Evaluate(stmt.Superclass); if (!(superclass is LoxClass)) { throw new InterpretingException(stmt.Superclass.Name, "Superclass must be a class."); } } environment.Define(stmt.Name.Lexeme, null); if (stmt.Superclass != null) { environment = new Environment(environment); environment.Define("super", superclass); } Dictionary <string, LoxFunction> methods = new Dictionary <string, LoxFunction>(); foreach (var method in stmt.Methods) { var function = new LoxFunction(method, environment, method.Name.Lexeme == stmt.Name.Lexeme); methods[method.Name.Lexeme] = function; } var lclass = new LoxClass(stmt.Name.Lexeme, (LoxClass)superclass, methods); if (stmt.Superclass != null) { environment = environment.Enclosing; } environment.Assign(stmt.Name, lclass); return(null); }