private static object ParseFunction(string functionString, string inputJson, JArray array, JToken currentArrayElement)
{
try
{
object output = null;
string functionName, argumentString;
if (!TryParseFunctionNameAndArguments(functionString, out functionName, out argumentString))
{
return(functionName);
}
string[] arguments = GetArguments(argumentString);
object[] parameters = new object[arguments.Length + 1];
int i = 0;
if (arguments != null && arguments.Length > 0)
{
foreach (string argument in arguments)
{
string trimmedArgument = argument;
if (argument.Contains("#"))
{
trimmedArgument = argument.Trim();
}
if (trimmedArgument.StartsWith("#"))
{
parameters[i] = ParseFunction(trimmedArgument, inputJson, array, currentArrayElement);
}
else
{
parameters[i] = trimmedArgument;
}
i++;
}
}
parameters[i] = inputJson;
if (functionName == "currentvalue" || functionName == "currentindex" || functionName == "lastindex" ||
functionName == "lastvalue")
{
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, new object[] { array, currentArrayElement });
}
else if (functionName == "currentvalueatpath" || functionName == "lastvalueatpath")
{
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, new object[] { array, currentArrayElement, arguments[0] });
}
else if (functionName == "customfunction")
{
output = CallCustomFunction(parameters);
}
else if (JUSTContext.IsRegisteredCustomFunction(functionName))
{
var methodInfo = JUSTContext.GetCustomMethod(functionName);
output = ReflectionHelper.InvokeCustomMethod(methodInfo, parameters, true);
}
else if (Regex.IsMatch(functionName, ReflectionHelper.EXTERNAL_ASSEMBLY_REGEX))
{
output = ReflectionHelper.CallExternalAssembly(functionName, parameters);
}
else if (functionName == "xconcat" || functionName == "xadd" ||
functionName == "mathequals" || functionName == "mathgreaterthan" || functionName == "mathlessthan" ||
functionName == "mathgreaterthanorequalto" ||
functionName == "mathlessthanorequalto" || functionName == "stringcontains" ||
functionName == "stringequals")
{
object[] oParams = new object[1];
oParams[0] = parameters;
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, oParams);
}
else
{
if (currentArrayElement != null && functionName != "valueof")
{
parameters[i] = JsonConvert.SerializeObject(currentArrayElement);
}
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, parameters);
}
return(output);
}
catch (Exception ex)
{
throw new Exception("Error while calling function : " + functionString + " - " + ex.Message, ex);
}
}
private static object ParseFunction(string functionString, string inputJson, JArray array, JToken currentArrayElement, JUSTContext localContext)
{
try
{
object output = null;
string functionName, argumentString;
if (!ExpressionHelper.TryParseFunctionNameAndArguments(functionString, out functionName, out argumentString))
{
return(functionName);
}
string[] arguments = ExpressionHelper.GetArguments(argumentString);
var listParameters = new List <object>();
if (functionName == "ifcondition")
{
var condition = ParseArgument(inputJson, array, currentArrayElement, arguments[0], localContext);
var value = ParseArgument(inputJson, array, currentArrayElement, arguments[1], localContext);
var index = condition.ToString().ToLower() == value.ToString().ToLower() ? 2 : 3;
output = ParseArgument(inputJson, array, currentArrayElement, arguments[index], localContext);
}
else
{
int i = 0;
for (; i < (arguments?.Length ?? 0); i++)
{
listParameters.Add(ParseArgument(inputJson, array, currentArrayElement, arguments[i], localContext));
}
listParameters.Add(localContext ?? GlobalContext);
var parameters = listParameters.ToArray();
if (functionName == "currentvalue" || functionName == "currentindex" || functionName == "lastindex" ||
functionName == "lastvalue")
{
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, new object[] { array, currentArrayElement }, true, localContext ?? GlobalContext);
}
else if (functionName == "currentvalueatpath" || functionName == "lastvalueatpath")
{
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, new object[] { array, currentArrayElement, arguments[0] }, true, localContext ?? GlobalContext);
}
else if (functionName == "customfunction")
{
output = CallCustomFunction(parameters, localContext);
}
else if (localContext?.IsRegisteredCustomFunction(functionName) ?? false)
{
var methodInfo = localContext.GetCustomMethod(functionName);
output = ReflectionHelper.InvokeCustomMethod(methodInfo, parameters, true, localContext ?? GlobalContext);
}
else if (GlobalContext.IsRegisteredCustomFunction(functionName))
{
var methodInfo = GlobalContext.GetCustomMethod(functionName);
output = ReflectionHelper.InvokeCustomMethod(methodInfo, parameters, true, localContext ?? GlobalContext);
}
else if (Regex.IsMatch(functionName, ReflectionHelper.EXTERNAL_ASSEMBLY_REGEX))
{
output = ReflectionHelper.CallExternalAssembly(functionName, parameters, localContext ?? GlobalContext);
}
else if (functionName == "xconcat" || functionName == "xadd" ||
functionName == "mathequals" || functionName == "mathgreaterthan" || functionName == "mathlessthan" ||
functionName == "mathgreaterthanorequalto" ||
functionName == "mathlessthanorequalto" || functionName == "stringcontains" ||
functionName == "stringequals")
{
object[] oParams = new object[1];
oParams[0] = parameters;
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, oParams, true, localContext ?? GlobalContext);
}
else
{
var input = ((JUSTContext)parameters.Last()).Input;
if (currentArrayElement != null && functionName != "valueof")
{
((JUSTContext)parameters.Last()).Input = JsonConvert.SerializeObject(currentArrayElement);
}
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, parameters, true, localContext ?? GlobalContext);
((JUSTContext)parameters.Last()).Input = input;
}
}
return(output);
}
catch (Exception ex)
{
throw new Exception("Error while calling function : " + functionString + " - " + ex.Message, ex);
}
}
private static object ParseFunction(string functionString, string inputJson, JArray array, JToken currentArrayElement, JUSTContext localContext)
{
try
{
object output;
string functionName, argumentString;
if (!ExpressionHelper.TryParseFunctionNameAndArguments(functionString, out functionName, out argumentString))
{
return(functionName);
}
string[] arguments = ExpressionHelper.SplitArguments(argumentString);
if (functionName == "ifcondition")
{
var condition = ParseArgument(inputJson, array, currentArrayElement, arguments[0], localContext);
var value = ParseArgument(inputJson, array, currentArrayElement, arguments[1], localContext);
var index = condition.ToString().ToLower() == value.ToString().ToLower() ? 2 : 3;
output = ParseArgument(inputJson, array, currentArrayElement, arguments[index], localContext);
}
else
{
var listParameters = new List <object>();
int i = 0;
for (; i < (arguments?.Length ?? 0); i++)
{
listParameters.Add(ParseArgument(inputJson, array, currentArrayElement, arguments[i], localContext));
}
listParameters.Add(localContext ?? GlobalContext);
var parameters = listParameters.ToArray();
if (new[] { "currentvalue", "currentindex", "lastindex", "lastvalue" }.Contains(functionName))
{
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, new object[] { array, currentArrayElement }, true, localContext ?? GlobalContext);
}
else if (new[] { "currentvalueatpath", "lastvalueatpath" }.Contains(functionName))
{
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, new object[] { array, currentArrayElement, parameters[0] }, true, localContext ?? GlobalContext);
}
else if (functionName == "currentproperty")
{
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName,
new object[] { array, currentArrayElement, localContext ?? GlobalContext },
false, localContext ?? GlobalContext);
}
else if (functionName == "customfunction")
{
output = CallCustomFunction(parameters, localContext);
}
else if (localContext?.IsRegisteredCustomFunction(functionName) ?? false)
{
var methodInfo = localContext.GetCustomMethod(functionName);
output = ReflectionHelper.InvokeCustomMethod(methodInfo, parameters, true, localContext ?? GlobalContext);
}
else if (GlobalContext.IsRegisteredCustomFunction(functionName))
{
var methodInfo = GlobalContext.GetCustomMethod(functionName);
output = ReflectionHelper.InvokeCustomMethod(methodInfo, parameters, true, localContext ?? GlobalContext);
}
else if (ReflectionHelper.IsExternalFunction(functionName))
{
output = ReflectionHelper.CallExternalAssembly(functionName, parameters, localContext ?? GlobalContext);
}
else if (new[] { "xconcat", "xadd",
"mathequals", "mathgreaterthan", "mathlessthan", "mathgreaterthanorequalto", "mathlessthanorequalto",
"stringcontains", "stringequals" }.Contains(functionName))
{
object[] oParams = new object[1];
oParams[0] = parameters;
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, oParams, true, localContext ?? GlobalContext);
}
else if (functionName == "applyover")
{
var contextInput = GetInputToken(localContext);
var input = JToken.Parse(Transform(parameters[0].ToString(), contextInput.ToString(), localContext));
(localContext ?? GlobalContext).Input = input;
output = ParseFunction(parameters[1].ToString().Trim(' ', '\''), inputJson, array, currentArrayElement, localContext ?? GlobalContext);
(localContext ?? GlobalContext).Input = contextInput;
}
else
{
var input = ((JUSTContext)parameters.Last()).Input;
if (currentArrayElement != null && functionName != "valueof")
{
((JUSTContext)parameters.Last()).Input = currentArrayElement;
}
output = ReflectionHelper.caller(null, "JUST.Transformer", functionName, parameters, true, localContext ?? GlobalContext);
((JUSTContext)parameters.Last()).Input = input;
}
}
return(output);
}
catch (Exception ex)
{
//TODO Exception with full function string and specific function string (first and last level of recursion)
throw new Exception("Error while calling function : " + functionString + " - " + ex.Message, ex);
}
}