public object Compute(Tolerance?tolerance, params object[] arguments)
{
this.RequiresNotDisposed();
if (!RecognizedCorrectly)
{
// Expression was not recognized correctly.
return(initialExpression);
}
var convertedArguments = FormatArgumentsAccordingToParameters(arguments, parametersRegistry?.Dump() ?? Array.Empty <ParameterContext>());
object[]? FormatArgumentsAccordingToParameters(
object[] parameterValues,
ParameterContext[] parameters)
{
if (parameterValues.Length != parameters.Length)
{
return(null);
}
var finalValues = new object[parameterValues.Length];
var i = 0;
object?paramValue = null;
while (i < finalValues.Length)
{
ParameterContext paraContext = parameters[i];
// If there was no continuation, initialize parameter with value.
paramValue ??= parameterValues[i];
// Initial filtration
switch (paramValue)
{
case byte convertedParam:
paramValue = Convert.ToInt64(convertedParam);
continue;
case sbyte convertedParam:
paramValue = Convert.ToInt64(convertedParam);
continue;
case short convertedParam:
paramValue = Convert.ToInt64(convertedParam);
continue;
case ushort convertedParam:
paramValue = Convert.ToInt64(convertedParam);
continue;
case int convertedParam:
paramValue = Convert.ToInt64(convertedParam);
continue;
case uint convertedParam:
paramValue = Convert.ToInt64(convertedParam);
continue;
case long convertedParam:
paramValue = convertedParam;
break;
case ulong convertedParam:
paramValue = Convert.ToDouble(convertedParam);
continue;
case float convertedParam:
paramValue = Convert.ToDouble(convertedParam);
continue;
case double convertedParam:
paramValue = convertedParam;
break;
case string convertedParam:
paramValue = convertedParam;
break;
case bool convertedParam:
paramValue = convertedParam;
break;
case byte[] convertedParam:
paramValue = convertedParam;
break;
case Func <byte> convertedParam:
paramValue = new Func <long>(() => Convert.ToInt64(convertedParam()));
continue;
case Func <sbyte> convertedParam:
paramValue = new Func <long>(() => Convert.ToInt64(convertedParam()));
continue;
case Func <short> convertedParam:
paramValue = new Func <long>(() => Convert.ToInt64(convertedParam()));
continue;
case Func <ushort> convertedParam:
paramValue = new Func <long>(() => Convert.ToInt64(convertedParam()));
continue;
case Func <int> convertedParam:
paramValue = new Func <long>(() => Convert.ToInt64(convertedParam()));
continue;
case Func <uint> convertedParam:
paramValue = new Func <long>(() => Convert.ToInt64(convertedParam()));
continue;
case Func <long> convertedParam:
paramValue = convertedParam;
break;
case Func <ulong> convertedParam:
paramValue = new Func <double>(() => Convert.ToDouble(convertedParam()));
continue;
case Func <float> convertedParam:
paramValue = new Func <double>(() => Convert.ToDouble(convertedParam()));
continue;
case Func <double> convertedParam:
paramValue = convertedParam;
break;
case Func <string> convertedParam:
paramValue = convertedParam;
break;
case Func <bool> convertedParam:
paramValue = convertedParam;
break;
case Func <byte[]> convertedParam:
paramValue = convertedParam;
break;
default:
// Argument type is not (yet) supported
return(null);
}
// Secondary filtration
switch (paramValue)
{
case long convertedParam:
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValue(paraContext, convertedParam != 0);
break;
case SupportedValueType.ByteArray:
paramValue = CreateValue(paraContext, BitConverter.GetBytes(convertedParam));
break;
case SupportedValueType.Numeric:
switch (paraContext.IsFloat)
{
case true:
paramValue = CreateValue(paraContext, Convert.ToDouble(convertedParam));
break;
case false:
paramValue = CreateValue(paraContext, convertedParam);
break;
default:
paraContext.DetermineInteger();
continue;
}
break;
case SupportedValueType.String:
paramValue = CreateValue(
paraContext,
StringFormatter.FormatIntoString(convertedParam, stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.Numeric);
continue;
}
break;
case double convertedParam:
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
// ReSharper disable once CompareOfFloatsByEqualityOperator - no better idea for now
paramValue = CreateValue(paraContext, convertedParam != 0D);
break;
case SupportedValueType.ByteArray:
paramValue = CreateValue(paraContext, BitConverter.GetBytes(convertedParam));
break;
case SupportedValueType.Numeric:
switch (paraContext.IsFloat)
{
case true:
paramValue = CreateValue(paraContext, convertedParam);
break;
case false:
paramValue = CreateValue(paraContext, Convert.ToInt64(convertedParam));
break;
default:
paraContext.DetermineFloat();
continue;
}
break;
case SupportedValueType.String:
paramValue = CreateValue(
paraContext,
StringFormatter.FormatIntoString(convertedParam, stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.Numeric);
continue;
}
break;
case bool convertedParam:
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValue(paraContext, convertedParam);
break;
case SupportedValueType.ByteArray:
paramValue = CreateValue(paraContext, BitConverter.GetBytes(convertedParam));
break;
case SupportedValueType.Numeric:
return(null);
case SupportedValueType.String:
paramValue = CreateValue(
paraContext,
StringFormatter.FormatIntoString(convertedParam, stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.Boolean);
continue;
}
break;
case string convertedParam:
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValue(paraContext, bool.Parse(convertedParam));
break;
case SupportedValueType.ByteArray:
{
if (ParsingFormatter.ParseByteArray(convertedParam, out var byteArrayResult))
{
paramValue = CreateValue(paraContext, byteArrayResult);
}
else
{
// Cannot parse byte array.
return(null);
}
}
break;
case SupportedValueType.Numeric:
{
if (ParsingFormatter.ParseNumeric(convertedParam, out var numericResult))
{
switch (numericResult)
{
case long integerResult:
paramValue = CreateValue(paraContext, integerResult);
break;
case double floatResult:
paramValue = CreateValue(paraContext, floatResult);
break;
default:
// Numeric type unknown.
return(null);
}
}
else
{
// Cannot parse numeric type.
return(null);
}
}
break;
case SupportedValueType.String:
paramValue = CreateValue(paraContext, convertedParam);
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.String);
continue;
}
break;
case byte[] convertedParam:
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValue(paraContext, BitConverter.ToBoolean(convertedParam, 0));
break;
case SupportedValueType.ByteArray:
paramValue = CreateValue(paraContext, convertedParam);
break;
case SupportedValueType.Numeric:
switch (paraContext.IsFloat)
{
case true:
paramValue = CreateValue(paraContext, BitConverter.ToDouble(convertedParam, 0));
break;
case false:
paramValue = CreateValue(paraContext, BitConverter.ToInt64(convertedParam, 0));
break;
default:
paraContext.DetermineFloat();
continue;
}
break;
case SupportedValueType.String:
paramValue = CreateValue(
paraContext,
StringFormatter.FormatIntoString(convertedParam, stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.ByteArray);
continue;
}
break;
case Func <long> convertedParam:
paraContext.DetermineFunc();
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValueFromFunc(paraContext, () => convertedParam() == 0);
break;
case SupportedValueType.ByteArray:
paramValue = CreateValueFromFunc(paraContext, () => BitConverter.GetBytes(convertedParam()));
break;
case SupportedValueType.Numeric:
switch (paraContext.IsFloat)
{
case true:
paramValue = CreateValueFromFunc(paraContext, () => Convert.ToDouble(convertedParam()));
break;
case false:
paramValue = CreateValueFromFunc(paraContext, convertedParam);
break;
default:
paraContext.DetermineInteger();
continue;
}
break;
case SupportedValueType.String:
paramValue = CreateValueFromFunc(paraContext, () => StringFormatter.FormatIntoString(convertedParam(), stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.Numeric);
continue;
}
break;
case Func <double> convertedParam:
paraContext.DetermineFunc();
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
// ReSharper disable once CompareOfFloatsByEqualityOperator - no better idea for now
paramValue = CreateValueFromFunc(paraContext, () => convertedParam() == 0D);
break;
case SupportedValueType.ByteArray:
paramValue = CreateValueFromFunc(paraContext, () => BitConverter.GetBytes(convertedParam()));
break;
case SupportedValueType.Numeric:
switch (paraContext.IsFloat)
{
case true:
paramValue = CreateValueFromFunc(paraContext, convertedParam);
break;
case false:
paramValue = CreateValueFromFunc(paraContext, () => Convert.ToInt64(convertedParam()));
break;
default:
paraContext.DetermineFloat();
continue;
}
break;
case SupportedValueType.String:
paramValue = CreateValueFromFunc(paraContext, () => StringFormatter.FormatIntoString(convertedParam(), stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.Numeric);
continue;
}
break;
case Func <bool> convertedParam:
paraContext.DetermineFunc();
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValueFromFunc(paraContext, convertedParam);
break;
case SupportedValueType.ByteArray:
paramValue = CreateValueFromFunc(paraContext, () => BitConverter.GetBytes(convertedParam()));
break;
case SupportedValueType.Numeric:
return(null);
case SupportedValueType.String:
paramValue = CreateValueFromFunc(paraContext, () => StringFormatter.FormatIntoString(convertedParam(), stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.Boolean);
continue;
}
break;
case Func <string> convertedParam:
paraContext.DetermineFunc();
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValueFromFunc(paraContext, () => bool.Parse(convertedParam()));
break;
case SupportedValueType.ByteArray:
paramValue = CreateValueFromFunc(paraContext, () => ParsingFormatter.ParseByteArray(convertedParam(), out var baResult) ? baResult : null);
break;
case SupportedValueType.Numeric:
switch (paraContext.IsFloat)
{
case true:
paramValue = CreateValueFromFunc(paraContext, () => ParsingFormatter.ParseNumeric(
convertedParam(),
out var numericResult)
? Convert.ToDouble(numericResult, CultureInfo.CurrentCulture)
: throw new ArgumentInvalidTypeException(paraContext.Name));
break;
case false:
paramValue = CreateValueFromFunc(paraContext, () => ParsingFormatter.ParseNumeric(
convertedParam(),
out var numericResult)
? Convert.ToInt64(numericResult, CultureInfo.CurrentCulture)
: throw new ArgumentInvalidTypeException(paraContext.Name));
break;
default:
paraContext.DetermineFloat();
continue;
}
break;
case SupportedValueType.String:
paramValue = CreateValueFromFunc(paraContext, convertedParam);
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.String);
continue;
}
break;
case Func <byte[]> convertedParam:
paraContext.DetermineFunc();
switch (paraContext.ReturnType)
{
case SupportedValueType.Boolean:
paramValue = CreateValueFromFunc(paraContext, () => BitConverter.ToBoolean(convertedParam(), 0));
break;
case SupportedValueType.ByteArray:
paramValue = CreateValueFromFunc(paraContext, convertedParam);
break;
case SupportedValueType.Numeric:
switch (paraContext.IsFloat)
{
case true:
paramValue = CreateValueFromFunc(paraContext, () => BitConverter.ToDouble(convertedParam(), 0));
break;
case false:
paramValue = CreateValueFromFunc(paraContext, () => BitConverter.ToInt64(convertedParam(), 0));
break;
default:
paraContext.DetermineFloat();
continue;
}
break;
case SupportedValueType.String:
paramValue = CreateValueFromFunc(paraContext, () => StringFormatter.FormatIntoString(convertedParam(), stringFormatters));
break;
case SupportedValueType.Unknown:
paraContext.DetermineType(SupportedValueType.ByteArray);
continue;
}
break;
default:
// Argument type is not (yet) supported
return(null);
}
#pragma warning disable HAA0601 // Value type to reference type conversion causing boxing allocation - This is unavoidable now
#pragma warning disable HAA0303 // Considering moving this out of the generic method - Not really possible
object CreateValue <T>(ParameterContext parameterContext, T value) => parameterContext.FuncParameter ? new Func <T>(() => value) : (object)value;
object CreateValueFromFunc <T>(
ParameterContext parameterContext,
Func <T> value) => parameterContext.FuncParameter ? (object)value : value();
#pragma warning restore HAA0303 // Considering moving this out of the generic method
#pragma warning restore HAA0601 // Value type to reference type conversion causing boxing allocation
if (paramValue == null)
{
return(null);
}
finalValues[i] = paramValue;
paramValue = null;
i++;
}
return(finalValues);
}
if (convertedArguments == null)
{
// The arguments could not be correctly converted.
return(initialExpression);
}
Delegate?del;
if (body == null)
{
del = null;
}
else
{
try
{
del = Expression.Lambda(
tolerance == null ? body.GenerateExpression() : body.GenerateExpression(tolerance),
parametersRegistry?.Dump().Select(p => p.ParameterExpression) ?? Array.Empty <ParameterExpression>())
.Compile();
}
catch
{
// Expression is somehow not valid
del = null;
}
}
if (del == null)
{
// Delegate could not be compiled with the given arguments.
return(initialExpression);
}
try
{
return(del.DynamicInvoke(convertedArguments));
}
catch (OutOfMemoryException)
{
throw;
}
catch (DivideByZeroException)
{
throw;
}
catch
{
// Dynamic invocation of generated expression failed.
return(initialExpression);
}
}