public override object GetValue(ExecutionContext ctx)
{
object lStart = _left.GetValue(ctx);
object rStart = _right.GetValue(ctx);
object lFinal;
object rFinal;
TypeChecker.GreatestCommonType gct = TypeChecker.GCT(lStart, rStart);
switch (gct)
{
case TypeChecker.GreatestCommonType.StringType:
lFinal = Convert.ToString(lStart);
rFinal = Convert.ToString(rStart);
break;
case TypeChecker.GreatestCommonType.BooleanType:
lFinal = Convert.ToBoolean(lStart);
rFinal = Convert.ToBoolean(rStart);
break;
case TypeChecker.GreatestCommonType.NumericType:
lFinal = Convert.ToDecimal(lStart);
rFinal = Convert.ToDecimal(rStart);
break;
default:
throw new ArgumentOutOfRangeException();
}
// execute on the converted values
return(_op.Evaluate(lFinal, rFinal));
}
public override object GetValue(ExecutionContext ctx)
{
string res = "";
if (element != null)
{
res += Convert.ToString(element.GetValue(ctx));
}
if (concatenation != null)
{
res += Convert.ToString(concatenation.GetValue(ctx));
}
return(res);
}
public override object GetValue(ExecutionContext ctx)
{
string functionName = function.GetValue(ctx).ToString();
Functor f = ctx.GetFunction(functionName);
ArrayList arguments = new ArrayList();
if (!emptyArgsList)
{
if (args.GetType() == typeof(Sequence <Expression>))
{
Sequence <Expression> seq = (Sequence <Expression>)args;
foreach (Expression ex in (Sequence <Expression>)args)
{
arguments.Add(ex.GetValue(ctx));
}
}
else
{
arguments.Add(((Expression)args).GetValue(ctx));
}
}
return(f.Execute(arguments.ToArray(), ctx));
}
public override object GetValue(ExecutionContext ctx)
{
return(-(Convert.ToDecimal(computable.GetValue(ctx))));
}
public override object GetValue(ExecutionContext ctx)
{
ctx[_receiver._idName] = (_expr != null) ? _expr.GetValue(ctx) : "";
return(string.Format("{0}={1}", _receiver._idName, ctx[_receiver._idName]));
}
