private static FormulaValue ReplaceChecker(IRContext irContext, int index, FormulaValue arg)
{
if (index == 1)
{
if (arg is BlankValue)
{
return(new ErrorValue(irContext, new ExpressionError()
{
Message = "The second parameter to the Replace function cannot be Blank()",
Span = irContext.SourceContext,
Kind = ErrorKind.InvalidFunctionUsage
}));
}
var finiteCheckResult = FiniteChecker(irContext, index, arg);
if (finiteCheckResult is NumberValue numberArg)
{
var number = numberArg.Value;
if (number <= 0)
{
return(CommonErrors.ArgumentOutOfRange(irContext));
}
}
return(finiteCheckResult);
}
if (index == 2)
{
return(PositiveNumberChecker(irContext, index, arg));
}
return(arg);
}
private static FormulaValue AddDateTimeAndDay(IRContext irContext, FormulaValue[] args)
{
DateTime arg0;
switch (args[0])
{
case DateTimeValue dtv:
arg0 = dtv.Value;
break;
case DateValue dv:
arg0 = dv.Value;
break;
default:
return(CommonErrors.RuntimeTypeMismatch(irContext));
}
var arg1 = (NumberValue)args[1];
try
{
var result = arg0.AddDays(arg1.Value);
return(new DateTimeValue(irContext, result));
}
catch
{
return(CommonErrors.ArgumentOutOfRange(irContext));
}
}
// https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-left-mid-right
public static FormulaValue Mid(IRContext irContext, FormulaValue[] args)
{
var errors = new List <ErrorValue>();
NumberValue start = (NumberValue)args[1];
if (double.IsNaN(start.Value) || double.IsInfinity(start.Value) || start.Value <= 0)
{
errors.Add(CommonErrors.ArgumentOutOfRange(start.IRContext));
}
NumberValue count = (NumberValue)args[2];
if (double.IsNaN(count.Value) || double.IsInfinity(count.Value) || count.Value < 0)
{
errors.Add(CommonErrors.ArgumentOutOfRange(count.IRContext));
}
if (errors.Count != 0)
{
return(ErrorValue.Combine(irContext, errors));
}
StringValue source = (StringValue)args[0];
var start0Based = (int)(start.Value - 1);
if (source.Value == "" || start0Based >= source.Value.Length)
{
return(new StringValue(irContext, ""));
}
var minCount = Math.Min((int)count.Value, source.Value.Length - start0Based);
var result = source.Value.Substring(start0Based, minCount);
return(new StringValue(irContext, result));
}
// https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-value
// Convert string to number
public static FormulaValue Value(EvalVisitor runner, SymbolContext symbolContext, IRContext irContext, FormulaValue[] args)
{
var arg0 = args[0];
if (arg0 is NumberValue n)
{
return(n);
}
if (arg0 is DateValue dv)
{
return(DateToNumber(irContext, new DateValue[] { dv }));
}
if (arg0 is DateTimeValue dtv)
{
return(DateTimeToNumber(irContext, new DateTimeValue[] { dtv }));
}
var str = ((StringValue)arg0).Value.Trim();
var styles = NumberStyles.Any;
if (string.IsNullOrEmpty(str))
{
return(new BlankValue(irContext));
}
double div = 1;
if (str[str.Length - 1] == '%')
{
str = str.Substring(0, str.Length - 1);
div = 100;
styles = NumberStyles.Number;
}
else if (str[0] == '%')
{
str = str.Substring(1, str.Length - 1);
div = 100;
styles = NumberStyles.Number;
}
if (!double.TryParse(str, styles, runner.CultureInfo, out var val))
{
return(CommonErrors.InvalidNumberFormatError(irContext));
}
if (IsInvalidDouble(val))
{
return(CommonErrors.ArgumentOutOfRange(irContext));
}
val /= div;
return(new NumberValue(irContext, val));
}
private static FormulaValue FiniteChecker(IRContext irContext, int index, FormulaValue arg)
{
if (arg is NumberValue numberValue)
{
var number = numberValue.Value;
if (IsInvalidDouble(number))
{
return(CommonErrors.ArgumentOutOfRange(irContext));
}
}
return(arg);
}
private static FormulaValue StrictPositiveNumberChecker(IRContext irContext, int index, FormulaValue arg)
{
var finiteCheckResult = FiniteChecker(irContext, index, arg);
if (finiteCheckResult is NumberValue numberArg)
{
var number = numberArg.Value;
if (number <= 0)
{
return(CommonErrors.ArgumentOutOfRange(irContext));
}
}
return(arg);
}
// https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/show-text-dates-times
// https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-dateadd-datediff
public static FormulaValue DateAdd(IRContext irContext, FormulaValue[] args)
{
DateTime datetime;
switch (args[0])
{
case DateTimeValue dtv:
datetime = dtv.Value;
break;
case DateValue dv:
datetime = dv.Value;
break;
default:
return(CommonErrors.RuntimeTypeMismatch(irContext));
}
var delta = (NumberValue)args[1];
var units = (StringValue)args[2];
try
{
DateTime newDate;
switch (units.Value.ToLower())
{
case "milliseconds":
newDate = datetime.AddMilliseconds(delta.Value);
break;
case "seconds":
newDate = datetime.AddSeconds(delta.Value);
break;
case "minutes":
newDate = datetime.AddMinutes(delta.Value);
break;
case "hours":
newDate = datetime.AddHours(delta.Value);
break;
case "days":
newDate = datetime.AddDays(delta.Value);
break;
case "months":
newDate = datetime.AddMonths((int)delta.Value);
break;
case "quarters":
newDate = datetime.AddMonths((int)delta.Value * 3);
break;
case "years":
newDate = datetime.AddYears((int)delta.Value);
break;
default:
// TODO: Task 10723372: Implement Unit Functionality in DateAdd, DateDiff Functions
return(CommonErrors.NotYetImplementedError(irContext, "DateAdd Only supports Days for the unit field"));
}
if (args[0] is DateTimeValue)
{
return(new DateTimeValue(irContext, newDate));
}
else
{
return(new DateValue(irContext, newDate.Date));
}
}
catch
{
return(CommonErrors.ArgumentOutOfRange(irContext));
}
}