public object VisitVariableExpr(Expr.Variable expr)
{
if (scopes.Count != 0 && scopes.Peek().ContainsKey(expr.name.lexeme) && scopes.Peek()[expr.name.lexeme] == false)
{
Basil.Error(expr.name, "Cannot read local variable in its own initializer.");
}
ResolveLocal(expr, expr.name);
return(null);
}
private Stmt ClassDeclaration()
{
Token name = Consume(Token.TokenType.Identifier, "Expect class name.");
Expr superclass = null;
if (Match(Token.TokenType.Less))
{
Consume(Token.TokenType.Identifier, "Expect superclass name.");
superclass = new Expr.Variable(Previous());
}
Consume(Token.TokenType.LeftBrace, "Expect '{' before class body.");
List <Stmt.Function> methods = new List <Stmt.Function>();
while (!Check(Token.TokenType.RightBrace) && !IsAtEnd())
{
methods.Add(Function("method"));
}
Consume(Token.TokenType.RightBrace, "Expect '}' after class body.");
return(new Stmt.Class(name, superclass, methods));
}
public object VisitVariableExpr(Expr.Variable expr)
{
return(LookUpVariable(expr.name, expr));
}
public string VisitVariableExpr(Expr.Variable expr)
{
return(expr.name.ToString());
}