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;
}
