public override string ToString()
{
return(string.Format("({0} {1} {2})",
this.ColumnName,
OperatorTypeHelper.GetWhereClauseSqlOperator(this.Operator),
this.CommandParameterName));
}
public static Boolean EvaluateOnp(
DynContext DynLanContext)
{
Boolean result = false;
ExpressionState expState = DynLanContext.CurrentExpressionState;
ExpressionContext expContext = DynLanContext.CurrentExpressionContext;
// czy zakończyć i zapisać wynik
if (expState.TokenIndex >= expState.Expression.OnpTokens.Count)
{
Object finResult = null;
if (expState.ValueStack.Count > 0)
{
finResult = MyCollectionsExtenders.Pop(expState.ValueStack);
}
expState.ValueStack.Clear();
expState.Finished = true;
expState.Result = InternalTypeConverter.ToOuter(finResult);
MyCollectionsExtenders.Pop(expContext.Stack);
if (expContext.Current != null)
{
expContext.Current.PushValue(InternalTypeConverter.ToOuter(finResult));
return(false);
}
else
{
expContext.Result = InternalTypeConverter.ToOuter(finResult);
expContext.IsFinished = true;
return(true);
}
}
ExpressionToken token = expState.Expression.OnpTokens[expState.TokenIndex];
// wykonanie następnej operacji
if (token.TokenType == TokenType.VALUE)
{
ExpressionValue operationValue = StringHelper.
GetValueFromText(token.TokenChars);
Object value = operationValue == null ? null :
InternalTypeConverter.ToInner(operationValue.Value);
expState.PushValue(value);
}
else if (token.TokenType == TokenType.PROPERTY_NAME)
{
expState.PushValue(token.TokenName);
}
if (token.TokenType == TokenType.VARIABLE)
{
result = ObjectValueGetter.EvaluateValue(
token.TokenName,
DynLanContext);
}
else if (token.TokenType == TokenType.OPERATOR)
{
Object valueA = InternalTypeConverter.ToInner(
MyCollectionsExtenders.Pop(expState.ValueStack));
Object valueB = InternalTypeConverter.ToInner(
MyCollectionsExtenders.Pop(expState.ValueStack));
Object value = null;
OperatorType operatorType = OperatorTypeHelper.
GetOperationType(token.TokenChars);
try
{
value = OperationHelper.Do(
operatorType,
valueB,
valueA,
DynLanContext.ForceDecimals);
expState.PushValue(value);
}
catch
{
throw;
}
}
expState.TokenIndex++;
return(result);
}
