public Expr OnParseThrow()
{
var tokenIt = this._parser.TokenIt;
var initiatorToken = tokenIt.NextToken;
var expr = new ThrowExpr();
// <codeThrow>
tokenIt.Expect(Tokens.Throw);
expr.Exp = this._parser.ParseExpression(Terminators.ExpStatementEnd, true, false, true, true, false);
// </codeThrow>
this._parser.SetupContext(expr, initiatorToken);
return(expr);
}
/// <summary>
/// Execute
/// </summary>
public object VisitThrow(ThrowExpr expr)
{
var message = "";
if (expr.Exp != null)
{
var result = expr.Exp.Evaluate(this) as LObject;
if (result != LObjects.Null)
{
message = result.GetValue().ToString();
}
}
throw new LangException("TypeError", message, expr.Ref.ScriptName, expr.Ref.Line);
}
/// <summary>
/// Visits the try statement tree.
/// </summary>
/// <param name="tryExpr"></param>
public object VisitThrow(ThrowExpr expr)
{
_callBackOnNodeStart(expr);
return(null);
}
/// <summary>
/// Visits the try statement tree.
/// </summary>
/// <param name="tryExpr"></param>
public object VisitThrow(ThrowExpr expr)
{
_callBackOnNodeStart(expr);
return null;
}
public static void Main()
{
Console.WriteLine("----------------------------");
Console.WriteLine("C#7 -- Binary Literals & Digit Separators");
Console.WriteLine("----------------------------");
BinLitDigSep.Main();
Console.WriteLine("\n----------------------------");
Console.WriteLine("C#7 -- Tuples & Deconstruction");
Console.WriteLine("----------------------------");
Tuples.Main();
DeconstructEG.Main();
Console.WriteLine("----------------------------");
Console.WriteLine("C#7 -- Local Functions");
Console.WriteLine("----------------------------");
LocalFunc.Main();
Console.WriteLine("----------------------------");
Console.WriteLine("C#7 -- Pattern Matching");
Console.WriteLine("----------------------------");
PatternMatch.Main();
Console.WriteLine("\n----------------------------");
Console.WriteLine("C#7 -- Out variables");
Console.WriteLine("----------------------------");
OutVarDecl.Main();
Console.WriteLine("----------------------------");
Console.WriteLine("C#7 -- Expression bodied getters and setters");
Console.WriteLine("----------------------------");
ExprBodyGetSet.Main();
Console.WriteLine("\n----------------------------");
Console.WriteLine("C#7 -- Expression bodied constructors and finalizers");
Console.WriteLine("----------------------------");
ExprBodyConstrFinalizer.Main();
Console.WriteLine("\n----------------------------");
Console.WriteLine("C#7 -- Throw Expressions");
Console.WriteLine("----------------------------");
ThrowExpr.Main();
Console.WriteLine("\n----------------------------");
Console.WriteLine("C#7 -- Discards");
Console.WriteLine("----------------------------");
DiscardsEG.Main();
Console.WriteLine("----------------------------");
Console.WriteLine("C#7 -- Generalized async return types");
Console.WriteLine("----------------------------");
Console.WriteLine("See the source filed named \"GenAsyncReturn.cs\" ");
Console.WriteLine("\n----------------------------");
Console.WriteLine("C#7 -- Ref returns and locals");
Console.WriteLine("----------------------------");
RefLocal.Main();
Console.WriteLine("\n----------------------------");
Console.WriteLine("----------------------------");
}
