private static bool GetSprite(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 1)
{
errorMessage = "Invalid number of parameters in GetSprite function.";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
if (typeof(Transform).IsAssignableFrom(evalParams[0].GetType()))
{
Transform transform = (Transform)evalParams[0];
Image image = transform.GetComponent <Image>();
if (image != null)
{
p_args.HasResult = true;
p_args.Result = image.sprite;
return(true);
}
else
{
errorMessage = "Transform has no Image component in GetSprite function.";
return(false);
}
}
errorMessage = "Invalid parameters in GetImage function.";
return(false);
}
public object Invoke(FunctionArgs args)
{
if (args.Arguments.Length == 0)
{
return(null);
}
var result = args.Arguments[0].Evaluate(args.Query, args.ContextNode);
if (result == null)
{
return(0);
}
var item = result as QueryContext;
if (item != null)
{
return(1);
}
var items = result as QueryContext[];
if (items != null)
{
return(items.Length);
}
return(1);
}
// /**
// * Get parent of a transform
// */
// private static bool GetParent(FunctionArgs p_args)
// {
// if (p_args.Parameters.Length != 1)
// {
// errorMessage = "Invalid parameters in GetParent function.";
// return false;
// }
//
// object[] evalParams = p_args.EvaluateParameters();
//
// if (typeof(Transform).IsAssignableFrom(evalParams[0].GetType()))
// {
// p_args.HasResult = true;
// p_args.Result = ((Transform) evalParams[0]).parent;
// return true;
// }
//
// errorMessage = "Invalid parameters in GetParent function.";
// return false;
// }
/**
* Get child of transform at index
*/
private static bool GetChildAt(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 2)
{
errorMessage = "Invalid number of parameters in GetChild function.";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
if (typeof(Transform).IsAssignableFrom(evalParams[0].GetType()) && evalParams[1].GetType() == typeof(int))
{
Transform transform = (Transform)evalParams[0];
int childIndex = (int)evalParams[1];
if (transform != null && transform.childCount > childIndex)
{
p_args.HasResult = true;
p_args.Result = transform.GetChild(childIndex);
return(true);
}
else
{
errorMessage = "Invalid transform or child index in GetChildAt function.";
return(false);
}
}
errorMessage = "Invalid parameters in GetChildAt function.";
return(false);
}
private void SetPrefixes(FunctionArgs functionArgs, Scripts.Interfaces.IScript script)
{
foreach (var par in script.Parameters.Where(p => (p.Context & SIP.ParameterOptions.Calculation) != 0))
{
functionArgs.Parameters.First().Parameters.Add($"{_prefix}{par.Name}", par.Value);
}
}
public override object Evaluate(FunctionArgs args)
{
if (args.Arguments.Length != 1)
{
throw new XPathException("Too many or to few arguments in number()");
}
var a0 = args.Arguments[0].Evaluate(args.XPathExpression, args.Context);
var s = a0 as string;
if (s != null)
{
int i;
if (!int.TryParse(s, out i))
{
throw new XPathException("Integer expression expected in number()");
}
a0 = i;
}
if (!(a0 is int))
{
throw new XPathException("Integer expression expected in number()");
}
return (int)a0;
}
private object CalculateScriptFromDatabase(FunctionArgs e)
{
if (_scriptRepository != null && _parameterRepository != null)
{
var scriptData = _scriptRepository.GetScriptBaseOnNameAsync(_scriptName).Result;
if (scriptData != null)
{
return(CalculateScript(scriptData, e, _parameterRepository));
}
}
else
{
using (var scriptInterpreterDbContext = new ScriptInterpreterDbContext(new DbContextOptions <ScriptInterpreterDbContext>()))
{
var scriptRepository = _scriptRepository ?? new ScriptRepository(scriptInterpreterDbContext);
var scriptData = scriptRepository.GetScriptBaseOnNameAsync(_scriptName).Result;
if (scriptData != null)
{
var parameterRepository = _parameterRepository ?? new ParameterRepository(scriptInterpreterDbContext);
return(CalculateScript(scriptData, e, parameterRepository));
}
}
}
throw new ArgumentException("No script with name " + _scriptName);
}
private static bool GetCanvas(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 1)
{
errorMessage = "Invalid number of parameters in GetSprite function.";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
if (typeof(Transform).IsAssignableFrom(evalParams[0].GetType()))
{
Transform transform = (Transform)evalParams[0];
Canvas canvas = transform.GetComponentInParent <Canvas>();
if (canvas != null)
{
p_args.HasResult = true;
p_args.Result = canvas;
return(true);
}
else
{
errorMessage = "Transform or its parents has no Canvas component in GetCanvas function.";
return(false);
}
}
errorMessage = "Invalid parameters in GetCanvas function.";
return(false);
}
/**
* Add two values of type T together
*/
private static bool Add(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 2)
{
errorMessage = "Invalid parameters in Add function.";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
if (evalParams[0].GetType() == typeof(Vector2) && evalParams[1].GetType() == typeof(Vector2))
{
p_args.HasResult = true;
p_args.Result = (Vector2)evalParams[0] + (Vector2)evalParams[1];
return(true);
}
if (evalParams[0].GetType() == typeof(Vector3) && evalParams[1].GetType() == typeof(Vector3))
{
p_args.HasResult = true;
p_args.Result = (Vector3)evalParams[0] + (Vector3)evalParams[1];
return(true);
}
errorMessage = "Add function not implemented for parameters " + evalParams[0].GetType() + " and " +
evalParams[1].GetType();
return(false);
}
private object CalculateService(FunctionArgs functionArgs)
{
IList <object> arguments = new List <object>();
for (int i = 1; i < functionArgs.Parameters.Length; i++)
{
try
{
if (functionArgs.Parameters[i].Evaluate() == null)
{
arguments.RemoveAt(arguments.Count - 1);
}
else
{
arguments.Add(functionArgs.Parameters[i].Evaluate());
}
}
catch (ArgumentException)
{
arguments.RemoveAt(arguments.Count - 1);
}
}
Calculator.Map(arguments);
return(SetParameters(Calculator.Calculate(), functionArgs));
}
void json_parse(LanguageInterpreter sender, FunctionArgs args)
{
if (EUtils.CheckArgs(1, args))
{
object param = args.EvaluateParameters()[0];
if (EUtils.CheckArgType(param, typeof(string)))
{
string json_str = (string)param;
dynamic parsed_json = DynamicJson.Parse(json_str);
if (parsed_json.IsArray)
{
AnonymousVariableArray finalArray = VariableArrayFromDynamic(parsed_json);
args.HasResult = true;
args.Result = finalArray;
}
else
{
sender.Interpreter.HandleException(new Exception(sender.Interpreter.CurrentFile, sender.Interpreter.CurrentLine, "Unimplemented", "Only arrays are implemented in the JSON parser.", ""));
}
}
else
{
sender.Interpreter.HandleException(new Exception(sender.Interpreter.CurrentFile, sender.Interpreter.CurrentLine, "Invalid parameter type.", "Function expects parameter of type 'String', got '" + param.GetType().Name + "'.", ""));
}
}
else
{
sender.Interpreter.HandleException(Consts.Exceptions.ParameterCountMismatch(sender.Interpreter.CurrentFile, sender.Interpreter.CurrentLine, 1));
}
}
private void OnEvaluateFunction(string name, FunctionArgs args)
{
if (EvaluateFunction != null)
{
EvaluateFunction(name, args);
}
}
/**
* Scaling function for vector types, standard by components or by a scalar value
*/
private static bool Scale(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 2)
{
errorMessage = "Invalid parameters in Scale function.";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
if (evalParams[0].GetType() == typeof(Vector2))
{
if (evalParams[1].GetType() == typeof(int) || evalParams[1].GetType() == typeof(float) ||
evalParams[1].GetType() == typeof(double))
{
p_args.HasResult = true;
p_args.Result = (Vector2)evalParams[0] * Convert.ToSingle(evalParams[1]);
return(true);
}
if (evalParams[1].GetType() == typeof(Vector2))
{
p_args.HasResult = true;
Vector2 v2 = (Vector2)evalParams[0];
v2.Scale((Vector2)evalParams[1]);
p_args.Result = v2;
return(true);
}
errorMessage = "Invalid second parameter in Scale function.";
return(true);
}
if (evalParams[0].GetType() == typeof(Vector3))
{
if (evalParams[1].GetType() == typeof(int) || evalParams[1].GetType() == typeof(float) ||
evalParams[1].GetType() == typeof(double))
{
p_args.HasResult = true;
p_args.Result = (Vector3)evalParams[0] * Convert.ToSingle(evalParams[1]);
return(true);
}
if (evalParams[1].GetType() == typeof(Vector3))
{
p_args.HasResult = true;
Vector3 v3 = (Vector3)evalParams[0];
v3.Scale((Vector3)evalParams[1]);
p_args.Result = v3;
return(true);
}
errorMessage = "Invalid second parameter of type " + evalParams[1].GetType() + " for Scale function.";
return(false);
}
errorMessage = "Scale function for types " + evalParams[0].GetType() + ", " + evalParams[1].GetType() + " is not implemented.";
return(false);
}
/**
* Normalize Vector type
*/
private static bool Normalize(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 1)
{
errorMessage = "Invalid parameters in Normalize function.";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
Type paramType = evalParams[0].GetType();
if (paramType == typeof(Vector2))
{
p_args.HasResult = true;
p_args.Result = ((Vector2)evalParams[0]).normalized;
return(true);
}
if (paramType == typeof(Vector3))
{
p_args.HasResult = true;
p_args.Result = ((Vector3)evalParams[0]).normalized;
return(true);
}
errorMessage = "Normalize function for type " + paramType + " is not implemented";
return(false);
}
private static bool RandomInsideCircle(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 0 && p_args.Parameters.Length != 1 && p_args.Parameters.Length != 2)
{
errorMessage = "Invalid parameters in RandomInsideCircle function";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
switch (evalParams.Length)
{
case 0:
p_args.HasResult = true;
p_args.Result = UnityEngine.Random.insideUnitCircle;
return(true);
case 2:
// TODO type checking?
p_args.HasResult = true;
p_args.Result = UnityEngine.Random.insideUnitCircle * Convert.ToSingle(evalParams[0]);
return(true);
case 4:
p_args.HasResult = true;
var vector = UnityEngine.Random.insideUnitCircle;
vector.Scale(new Vector2(Convert.ToSingle(evalParams[0]), Convert.ToSingle(evalParams[1])));
p_args.Result = vector;
return(true);
}
errorMessage = "Unknown error in function RandomInsideCircle";
return(false);
}
protected bool HandleLfoFunc(FunctionArgs args, List <double> evaluatedArgs)
{
if (evaluatedArgs.Count != 6)
{
return(false);
}
double input = evaluatedArgs[0];
double attack = evaluatedArgs[1];
WaveformShap shape = (WaveformShap)evaluatedArgs[2];
double phase = evaluatedArgs[3];
double cycles = evaluatedArgs[4];
double amount = evaluatedArgs[5];
if (attack < 0 || attack > 1)
{
return(false);
}
if (Enum.IsDefined(typeof(WaveformShap), shape) == false)
{
return(false);
}
//input
double output = input;
//cycles
output *= cycles;
//phase
output += phase % 360 / 360.0;
//shape
HandleWaveformFunc(output, shape, out output);
output -= 0.5;
//attack
double attackAtInput;
if (attack == 0)
{
attackAtInput = 1;
}
else
{
attackAtInput = Math.Min(1, input / attack);
}
output *= attackAtInput;
//amount
output *= amount;
output += 0.5;
args.Result = output;
return(true);
}
/**
* Multiply two values of type T together
*/
private static bool Mul(FunctionArgs p_args)
{
if (p_args.Parameters.Length != 2)
{
errorMessage = "Invalid parameters in Mul function.";
return(false);
}
object[] evalParams = p_args.EvaluateParameters();
if (evalParams[0].GetType() == typeof(Vector2) && evalParams[1].GetType() == typeof(float))
{
p_args.HasResult = true;
p_args.Result = (Vector2)evalParams[0] * (float)evalParams[1];
return(true);
}
if (evalParams[0].GetType() == typeof(float) && evalParams[1].GetType() == typeof(Vector2))
{
p_args.HasResult = true;
p_args.Result = (float)evalParams[0] * (Vector2)evalParams[1];
return(true);
}
if (evalParams[0].GetType() == typeof(Vector2) && evalParams[1].GetType() == typeof(Vector2))
{
p_args.HasResult = true;
p_args.Result = (Vector2)evalParams[0] * (Vector2)evalParams[1];
return(true);
}
if (evalParams[0].GetType() == typeof(Vector3) && evalParams[1].GetType() == typeof(float))
{
p_args.HasResult = true;
p_args.Result = (Vector3)evalParams[0] * (float)evalParams[1];
return(true);
}
if (evalParams[0].GetType() == typeof(float) && evalParams[1].GetType() == typeof(Vector3))
{
p_args.HasResult = true;
p_args.Result = (float)evalParams[0] * (Vector3)evalParams[1];
return(true);
}
if (evalParams[0].GetType() == typeof(Vector3) && evalParams[1].GetType() == typeof(Vector3))
{
p_args.HasResult = true;
Vector3 scaled = (Vector3)evalParams[0];
scaled.Scale((Vector3)evalParams[1]);
p_args.Result = scaled;
return(true);
}
errorMessage = "Mul function not implemented for parameters " + evalParams[0].GetType() + " and " +
evalParams[1].GetType();
return(false);
}
private object SetParameters(IResult result, FunctionArgs functionArgs)
{
foreach (var property in result.Properties)
{
functionArgs.Parameters.First().Parameters.Add($"{_prefix}{property.Key}", property.Value);
}
return(true);
}
/// <summary>
/// NCalc custom function evaluator
/// </summary>
/// <param name="name">name of the function to be evaluated</param>
/// <param name="args">FunctionArgs object from where the function arguments will be read and the function evaluation result will be stored</param>
private void EvaluateFunction(string name, FunctionArgs args)
{
if (name == "defined")
{
//it is here assumed that defined always takes one argument and is of type identifier
Identifier identifier = (Identifier)args.Parameters[0].ParsedExpression;
args.Result = _definesHandler.IsDefined(identifier.Name);
}
}
private void OnExpOnEvaluateFunction(string name, FunctionArgs args)
{
var customExpr = _expressionTable?.Get(name);
if (customExpr?.ExpressionFunction != null)
{
args.Result = customExpr.ExpressionFunction.Invoke(args);
}
}
private IDictionary <string, object> GetParametersValues(FunctionArgs functionArgs)
{
IDictionary <string, object> parameterValues = new Dictionary <string, object>();
for (int i = 1; i < functionArgs.Parameters.Length; i += 2)
{
parameterValues.Add(functionArgs.Parameters[i].Evaluate().ToString(), functionArgs.Parameters[i + 1].Evaluate());
}
return(parameterValues);
}
private void EvaluateFunctionGetStaticMember(ElementRuntime elementRuntime, FunctionArgs args, CodeContext codeContext)
{
string argument = (string)args.Parameters[0].ParsedExpression.ToString();
string value = (string)mExpressionParser.EvaluateExpression(argument, codeContext);
ReferencedFileSave rfs = elementRuntime.AssociatedIElement.GetReferencedFileSaveByInstanceNameRecursively(value);
args.Result = elementRuntime.LoadReferencedFileSave(rfs, true, elementRuntime.AssociatedIElement);
}
private void Expr_EvaluateFunction(string name, FunctionArgs args)
{
var method = CustomEvaluatorFunctions.FirstOrDefault(m => m.Name.Equals(name, StringComparison.OrdinalIgnoreCase));
var result = method?.Invoke(null, new object[] { Context, uow, args });
if (result != null)
{
args.Result = result;
}
}
protected void OnEvaluateFunction(string name, FunctionArgs args)
{
if (name.ToLower() == "contains")
{
string v1 = args.Parameters[0].Evaluate().ToString().ToLower();
string v2 = args.Parameters[1].Evaluate().ToString().ToLower();
args.Result = v1.Contains(v2);
}
}
public static object InMilliseconds(FunctionArgs args)
{
TimeSpan input = (TimeSpan)args.Parameters[0].Evaluate();
if (input != null)
{
return(input.TotalMilliseconds);
}
return(0);
}
/// <summary>
/// How long since a given time
/// </summary>
/// <param name="args"></param>
/// <returns></returns>
public static object UtcAge(FunctionArgs args)
{
DateTime input = (DateTime)args.Parameters[0].Evaluate();
if (input != null)
{
return(DateTime.UtcNow - input);
}
return(TimeSpan.Zero);
}
public object Invoke(FunctionArgs args)
{
var item = args.ContextNode.GetQueryContextItem();
if (item == null)
{
return(null);
}
return(item.Language.ToString());
}
public static object URLSpam(FunctionArgs args)
{
string input = Convert.ToString(args.Parameters[0].Evaluate());
if (!(input is null))
{
return(r_URLSpam.Match(input).Success);
}
return(false);
}
private bool OnValidateFunction(string name, FunctionArgs args)
{
if (ValidateFunction != null)
{
return(ValidateFunction(name, args));
}
else
{
return(false);
}
}
private static void FunctionExtensions(string name, FunctionArgs args)
{
if (name.Equals("ClassLevel", StringComparison.OrdinalIgnoreCase))
{
args.Result = int.MaxValue;
}
if (name.Equals("SubClass", StringComparison.OrdinalIgnoreCase))
{
args.Result = "";
}
}
public static bool CheckArgs(int requiredAmount, FunctionArgs args)
{
if (args.Parameters.Length > requiredAmount || args.Parameters.Length < requiredAmount)
{
return(false);
}
else
{
return(true);
}
}
public static object GetFileName(FunctionArgs args)
{
string input = Convert.ToString(args.Parameters[0].Evaluate());
if (!(input is null))
{
return(Path.GetFileName(input));
}
return(null);
}
public override object Evaluate(FunctionArgs args)
{
if (args.Arguments.Length != 1)
{
throw new XPathException("Too many or to few arguments in not()");
}
var a0 = args.Arguments[0].Evaluate(args.XPathExpression, args.Context);
if (!(a0 is bool))
{
throw new XPathException("Boolean expression expected in not()");
}
return !(bool)a0;
}
private void OnEvaluateFunction(string name, FunctionArgs args)
{
if (EvaluateFunction != null)
EvaluateFunction(name, args);
}
public override void Visit(Function function)
{
var args = new FunctionArgs
{
Parameters = new Expression[function.Expressions.Length]
};
// Don't call parameters right now, instead let the function do it as needed.
// Some parameters shouldn't be called, for instance, in a if(), the "not" value might be a division by zero
// Evaluating every value could produce unexpected behaviour
for (int i = 0; i < function.Expressions.Length; i++ )
{
args.Parameters[i] = new Expression(function.Expressions[i], _options);
args.Parameters[i].EvaluateFunction += EvaluateFunction;
args.Parameters[i].EvaluateParameter += EvaluateParameter;
// Assign the parameters of the Expression to the arguments so that custom Functions and Parameters can use them
args.Parameters[i].Parameters = Parameters;
}
switch (function.Identifier.Name.ToLower())
{
case "count":
case "cnt":
var pcnt = Evaluate(function.Expressions[0]) as IList;
if (pcnt == null) throw new Exception("Cannot sum because the first parameter is not a list");
Result = pcnt.OfType<object>().Select(Convert.ToInt32).ToArray().Count();
break;
case "low":
var min = Evaluate(function.Expressions[0]) as IList;
if (min == null) throw new Exception("Cannot sum because the first parameter is not a list");
Result = min.OfType<object>().Select(Convert.ToInt32).ToArray().Min();
break;
case "high":
var max = Evaluate(function.Expressions[0]) as IList;
if (max == null) throw new Exception("Cannot sum because the first parameter is not a list");
Result = max.OfType<object>().Select(Convert.ToInt32).ToArray().Max();
break;
case "average":
case "avg":
var pAvg = Evaluate(function.Expressions[0]) as IList;
if (pAvg == null) throw new Exception("Cannot sum because the first parameter is not a list");
Result = pAvg.OfType<object>().Select(Convert.ToInt32).ToArray().Average();
break;
case "sum":
var p1 = Evaluate(function.Expressions[0]) as IList;
if (p1 == null) throw new Exception("Cannot sum because the first parameter is not a list");
Result = p1.OfType<object>().Select(Convert.ToInt32).ToArray().Sum();
break;
case "addmonths":
if (function.Expressions.Length != 2)
throw new ArgumentException("addMonths() takes exactly 2 arguments");
Result = Convert.ToDateTime(Evaluate(function.Expressions[0])).AddMonths(Convert.ToInt32(Evaluate(function.Expressions[1]))).ToString("MM/dd/yyyy");
break;
case "addyears":
if (function.Expressions.Length != 2)
throw new ArgumentException("addYears() takes exactly 2 arguments");
Result = Convert.ToDateTime(Evaluate(function.Expressions[0])).AddYears(Convert.ToInt32(Evaluate(function.Expressions[1]))).ToString("MM/dd/yyyy");
break;
case "adddays":
if (function.Expressions.Length != 2)
throw new ArgumentException("addDays() takes exactly 2 arguments");
Result = Convert.ToDateTime(Evaluate(function.Expressions[0])).AddDays(Convert.ToInt32(Evaluate(function.Expressions[1]))).ToString("MM/dd/yyyy");
break;
case "contains":
if (function.Expressions.Length != 2)
throw new ArgumentException("contains() takes exactly 2 arguments");
Result =
Evaluate(function.Expressions[0]).ToString().Contains(
Evaluate(function.Expressions[1]).ToString());
break;
#region Abs
case "abs":
CheckCase("Abs", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Abs() takes exactly 1 argument");
Result = Math.Abs(Convert.ToDecimal(
Evaluate(function.Expressions[0]))
);
break;
#endregion
#region Acos
case "acos":
CheckCase("Acos", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Acos() takes exactly 1 argument");
Result = Math.Acos(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Asin
case "asin":
CheckCase("Asin", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Asin() takes exactly 1 argument");
Result = Math.Asin(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Atan
case "atan":
CheckCase("Atan", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Atan() takes exactly 1 argument");
Result = Math.Atan(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Ceiling
case "ceiling":
CheckCase("Ceiling", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Ceiling() takes exactly 1 argument");
Result = Math.Ceiling(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Cos
case "cos":
CheckCase("Cos", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Cos() takes exactly 1 argument");
Result = Math.Cos(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Exp
case "exp":
CheckCase("Exp", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Exp() takes exactly 1 argument");
Result = Math.Exp(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Floor
case "floor":
CheckCase("Floor", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Floor() takes exactly 1 argument");
Result = Math.Floor(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region IEEERemainder
case "ieeeremainder":
CheckCase("IEEERemainder", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("IEEERemainder() takes exactly 2 arguments");
Result = Math.IEEERemainder(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToDouble(Evaluate(function.Expressions[1])));
break;
#endregion
#region Log
case "log":
CheckCase("Log", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("Log() takes exactly 2 arguments");
Result = Math.Log(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToDouble(Evaluate(function.Expressions[1])));
break;
#endregion
#region Log10
case "log10":
CheckCase("Log10", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Log10() takes exactly 1 argument");
Result = Math.Log10(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Pow
case "pow":
CheckCase("Pow", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("Pow() takes exactly 2 arguments");
Result = Math.Pow(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToDouble(Evaluate(function.Expressions[1])));
break;
#endregion
#region Round
case "round":
CheckCase("Round", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("Round() takes exactly 2 arguments");
MidpointRounding rounding = (_options & EvaluateOptions.RoundAwayFromZero) == EvaluateOptions.RoundAwayFromZero ? MidpointRounding.AwayFromZero : MidpointRounding.ToEven;
Result = Math.Round(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToInt16(Evaluate(function.Expressions[1])), rounding);
break;
#endregion
#region Sign
case "sign":
CheckCase("Sign", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Sign() takes exactly 1 argument");
Result = Math.Sign(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Sin
case "sin":
CheckCase("Sin", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Sin() takes exactly 1 argument");
Result = Math.Sin(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Sqrt
case "sqrt":
CheckCase("Sqrt", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Sqrt() takes exactly 1 argument");
Result = Math.Sqrt(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Tan
case "tan":
CheckCase("Tan", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Tan() takes exactly 1 argument");
Result = Math.Tan(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Truncate
case "truncate":
CheckCase("Truncate", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Truncate() takes exactly 1 argument");
Result = Math.Truncate(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Max
case "max":
CheckCase("Max", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("Max() takes exactly 2 arguments");
object maxleft = Evaluate(function.Expressions[0]);
object maxright = Evaluate(function.Expressions[1]);
Result = Numbers.Max(maxleft, maxright);
break;
#endregion
#region Min
case "min":
CheckCase("Min", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("Min() takes exactly 2 arguments");
object minleft = Evaluate(function.Expressions[0]);
object minright = Evaluate(function.Expressions[1]);
Result = Numbers.Min(minleft, minright);
break;
#endregion
#region if
case "if":
CheckCase("if", function.Identifier.Name);
if (function.Expressions.Length != 3)
throw new ArgumentException("if() takes exactly 3 arguments");
bool cond = Convert.ToBoolean(Evaluate(function.Expressions[0]));
Result = cond ? Evaluate(function.Expressions[1]) : Evaluate(function.Expressions[2]);
break;
#endregion
#region in
case "in":
CheckCase("in", function.Identifier.Name);
if (function.Expressions.Length < 2)
throw new ArgumentException("in() takes at least 2 arguments");
object parameter = Evaluate(function.Expressions[0]);
bool evaluation = false;
// Goes through any values, and stop whe one is found
for (int i = 1; i < function.Expressions.Length; i++)
{
object argument = Evaluate(function.Expressions[i]);
if (CompareUsingMostPreciseType(parameter, argument) == 0)
{
evaluation = true;
break;
}
}
Result = evaluation;
break;
#endregion
default:
// Calls external implementation
OnEvaluateFunction(IgnoreCase ? function.Identifier.Name.ToLower() : function.Identifier.Name, args);
// If an external implementation was found get the result back
if (args.HasResult)
{
Result = args.Result;
return;
}
throw new ArgumentException("Function not found",
function.Identifier.Name);
}
}
public override void Visit(Function function)
{
var args = new FunctionArgs
{
Parameters = new Expression[function.Expressions.Length]
};
// Don't call parameters right now, instead let the function do it as needed.
// Some parameters shouldn't be called, for instance, in a if(), the "not" value might be a division by zero
// Evaluating every value could produce unexpected behaviour
for (int i = 0; i < function.Expressions.Length; i++ )
{
args.Parameters[i] = new Expression(function.Expressions[i], _options);
args.Parameters[i].EvaluateFunction += EvaluateFunction;
args.Parameters[i].EvaluateParameter += EvaluateParameter;
// Assign the parameters of the Expression to the arguments so that custom Functions and Parameters can use them
args.Parameters[i].Parameters = Parameters;
}
// Calls external implementation
OnEvaluateFunction(IgnoreCase ? function.Identifier.Name.ToLower() : function.Identifier.Name, args);
// If an external implementation was found get the result back
if (args.HasResult)
{
Result = args.Result;
return;
}
switch (function.Identifier.Name.ToLower())
{
#region Abs
case "abs":
//CheckCase("abs", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("abs() takes exactly 1 argument");
Result = Math.Abs(Convert.ToDecimal(
Evaluate(function.Expressions[0]))
);
break;
#endregion
#region Acos
case "acos":
//CheckCase("acos", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("acos() takes exactly 1 argument");
Result = Math.Acos(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Asin
case "asin":
//CheckCase("asin", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("asin() takes exactly 1 argument");
Result = Math.Asin(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Atan
case "atan":
//CheckCase("atan", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Atan() takes exactly 1 argument");
Result = Math.Atan(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Ceiling
case "ceil":
//CheckCase("ceil", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("ceil() takes exactly 1 argument");
Result = Math.Ceiling(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Cos
case "cos":
//CheckCase("cos", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("cos() takes exactly 1 argument");
Result = Math.Cos(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Exp
case "exp":
//CheckCase("exp", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("exp() takes exactly 1 argument");
Result = Math.Exp(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Floor
case "floor":
//CheckCase("floor", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("floor() takes exactly 1 argument");
Result = Math.Floor(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region IEEERemainder
case "ieeeremainder":
//CheckCase("ieeeRemainder", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("ieeeRemainder() takes exactly 2 arguments");
Result = Math.IEEERemainder(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToDouble(Evaluate(function.Expressions[1])));
break;
#endregion
#region Log
case "log":
//CheckCase("log", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("log() takes exactly 2 arguments");
Result = Math.Log(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToDouble(Evaluate(function.Expressions[1])));
break;
#endregion
#region Log10
case "log10":
//CheckCase("log10", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("Log10() takes exactly 1 argument");
Result = Math.Log10(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Pow
case "pow":
//CheckCase("pow", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("pow() takes exactly 2 arguments");
Result = Math.Pow(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToDouble(Evaluate(function.Expressions[1])));
break;
#endregion
#region Round
case "round":
//CheckCase("round", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("round() takes exactly 2 arguments");
MidpointRounding rounding = (_options & EvaluateOptions.RoundAwayFromZero) == EvaluateOptions.RoundAwayFromZero ? MidpointRounding.AwayFromZero : MidpointRounding.ToEven;
Result = Math.Round(Convert.ToDouble(Evaluate(function.Expressions[0])), Convert.ToInt16(Evaluate(function.Expressions[1])), rounding);
break;
#endregion
#region Sign
case "sgn":
//CheckCase("sgn", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("sgn() takes exactly 1 argument");
Result = Math.Sign(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Sin
case "sin":
//CheckCase("sin", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("sin() takes exactly 1 argument");
Result = Math.Sin(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Sqrt
case "sqrt":
//CheckCase("sqrt", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("sqrt() takes exactly 1 argument");
Result = Math.Sqrt(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region root
case "root":
//CheckCase("root", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("root() takes exactly 1 argument");
Result = Math.Sqrt(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Tan
case "tan":
//CheckCase("tan", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("tan() takes exactly 1 argument");
Result = Math.Tan(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region truncate
case "truncate":
//CheckCase("truncate", function.Identifier.Name);
if (function.Expressions.Length != 1)
throw new ArgumentException("truncate() takes exactly 1 argument");
Result = Math.Truncate(Convert.ToDouble(Evaluate(function.Expressions[0])));
break;
#endregion
#region Max
case "max":
//CheckCase("max", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("max() takes exactly 2 arguments");
object maxleft = Evaluate(function.Expressions[0]);
object maxright = Evaluate(function.Expressions[1]);
Result = Numbers.Max(maxleft, maxright);
break;
#endregion
#region Min
case "min":
//CheckCase("min", function.Identifier.Name);
if (function.Expressions.Length != 2)
throw new ArgumentException("min() takes exactly 2 arguments");
object minleft = Evaluate(function.Expressions[0]);
object minright = Evaluate(function.Expressions[1]);
Result = Numbers.Min(minleft, minright);
break;
#endregion
default:
throw new ArgumentException("Function not found",
function.Identifier.Name);
}
}
