public LoxFunction Bind(LoxInstance instance) { Environment environment = new Environment(_closure); environment.Define("this", instance); return(new LoxFunction(_declaration, environment, _isInitializer)); }
public object Call(Interpreter interpreter, List <object> arguments) { LoxInstance instance = new LoxInstance(this); LoxFunction initializer = FindMethod("init"); initializer?.Bind(instance).Call(interpreter, arguments); return(instance); }
public LoxFunction Bind(LoxInstance instance) { var scope = new Scope(_closure); scope.Define("this", instance); return(new LoxFunction(_declaration, scope, _isInitializer)); }
public LoxFunction FindMethod(LoxInstance instance, string name) { if (_methods.TryGetValue(name, out LoxFunction method)) { return(method.Bind(instance)); } return(_superClass?.FindMethod(instance, name)); }
public object Call(Interpreter interpreter, List <object> args) { var instance = new LoxInstance(this); if (_methods.TryGetValue("init", out LoxFunction initializer)) { initializer.Bind(instance).Call(interpreter, args); } return(instance); }
public Object Call(Interpreter interpreter, List <Object> arguments) { LoxInstance instance = new LoxInstance(this); LoxFunction initializer = FindMethod("init"); if (initializer != null) { initializer.Bind(instance).Call(interpreter, arguments); } return(instance); }
public object VisitSuperExpr(Expr.Super expr) { int? distance = _locals[expr]; LoxClass superclass = (LoxClass)_environment.GetAt((int)distance, "super"); LoxInstance @object = (LoxInstance)_environment.GetAt((int)distance - 1, "this"); LoxFunction method = superclass.FindMethod(expr.Method.Lexeme); if (method == null) { throw new RuntimeError(expr.Method, $"Undefined method '{expr.Method.Lexeme}'."); } return(method.Bind(@object)); }
public object VisitSuperExpr(Super expr) { int distance = locals[expr]; LoxClass superclass = (LoxClass)environment.GetAt(distance, "super"); // "this" is always one level nearer than "super"'s environment. LoxInstance @object = (LoxInstance)environment.GetAt(distance - 1, "this"); LoxFunction method = superclass.FindMethod(expr.Method.Lexeme); if (method == null) { throw new RuntimeException(expr.Method, $"Undefined property '{expr.Method.Lexeme}'."); } return(method.Bind(@object)); }
public Object Visit_SuperExpr(SuperExpr expr) { int distance = _locals[expr]; LoxClass superclass = (LoxClass)_environment.GetAt(distance, "super"); // "this" is always one level nearer than "super"'s environment. LoxInstance obj = (LoxInstance)_environment.GetAt(distance - 1, "this"); string name = (string)expr.method.value; LoxFunction method = superclass.FindMethod(name); if (method == null) { throw new RuntimeException(expr.method.line, expr.method.column, "Undefined property '" + name + "'."); } return(method.Bind(obj)); }