private Function(Delegate @delegate, Type returnType, Type[] args, FunctionMValueParser[] parsers,
FunctionObjectParser[] objectParsers, FunctionStringParser[] stringParsers, FunctionTypeInfo[] typeInfos, CallArgsLengthCheck callArgsLengthCheck,
CallArgsLengthCheckPlayer callArgsLengthCheckPlayer, int requiredArgsCount)
{
this.@delegate = @delegate;
this.returnType = returnType;
this.args = args;
this.parsers = parsers;
this.objectParsers = objectParsers;
this.stringParsers = stringParsers;
this.typeInfos = typeInfos;
this.callArgsLengthCheck = callArgsLengthCheck;
this.callArgsLengthCheckPlayer = callArgsLengthCheckPlayer;
this.requiredArgsCount = requiredArgsCount;
}
//TODO: for high optimization add ParseBoolUnsafe ect. that doesn't contains the mValue type check for scenarios where we already had to check the mValue type
//TODO: add support for own function arguments parser for significant performance improvements with all benefits
// Returns null when function signature isn't supported
public static Function Create <T>(T func) where T : Delegate
{
var type = func.GetType();
var genericArguments = type.GetGenericArguments();
Type returnType;
if (type.Name.StartsWith("Func"))
{
// Return type is last generic argument
// Function never has empty generic arguments, so no need for size check, but we do it anyway
if (genericArguments.Length == 0)
{
returnType = FunctionTypes.Void;
}
else
{
returnType = genericArguments[genericArguments.Length - 1];
genericArguments = genericArguments.SkipLast(1).ToArray();
}
}
else
{
returnType = FunctionTypes.Void;
}
//TODO: check for unsupported types
//TODO: check if last type is a object[] and add all to it that didnt fit with length, like (string bla, object[] args)
//TODO: add parameter type attribute to annotate object[] with
var parsers = new FunctionMValueParser[genericArguments.Length];
var objectParsers = new FunctionObjectParser[genericArguments.Length];
var stringParsers = new FunctionStringParser[genericArguments.Length];
var typeInfos = new FunctionTypeInfo[genericArguments.Length];
var requiredArgsCount = 0;
for (int i = 0, length = genericArguments.Length; i < length; i++)
{
var arg = genericArguments[i];
var typeInfo = new FunctionTypeInfo(arg);
typeInfos[i] = typeInfo;
if (!typeInfo.IsNullable && !typeInfo.IsEventParams)
{
requiredArgsCount++;
}
if (arg == FunctionTypes.Obj)
{
//TODO: use MValue.ToObject here
parsers[i] = FunctionMValueParsers.ParseObject;
objectParsers[i] = FunctionObjectParsers.ParseObject;
stringParsers[i] = FunctionStringParsers.ParseObject;
}
else if (arg == FunctionTypes.Bool)
{
parsers[i] = FunctionMValueParsers.ParseBool;
objectParsers[i] = FunctionObjectParsers.ParseBool;
stringParsers[i] = FunctionStringParsers.ParseBool;
}
else if (arg == FunctionTypes.Int)
{
parsers[i] = FunctionMValueParsers.ParseInt;
objectParsers[i] = FunctionObjectParsers.ParseInt;
stringParsers[i] = FunctionStringParsers.ParseInt;
}
else if (arg == FunctionTypes.Long)
{
parsers[i] = FunctionMValueParsers.ParseLong;
objectParsers[i] = FunctionObjectParsers.ParseLong;
stringParsers[i] = FunctionStringParsers.ParseLong;
}
else if (arg == FunctionTypes.UInt)
{
parsers[i] = FunctionMValueParsers.ParseUInt;
objectParsers[i] = FunctionObjectParsers.ParseUInt;
stringParsers[i] = FunctionStringParsers.ParseUInt;
}
else if (arg == FunctionTypes.ULong)
{
parsers[i] = FunctionMValueParsers.ParseULong;
objectParsers[i] = FunctionObjectParsers.ParseULong;
stringParsers[i] = FunctionStringParsers.ParseULong;
}
else if (arg == FunctionTypes.Float)
{
parsers[i] = FunctionMValueParsers.ParseFloat;
objectParsers[i] = FunctionObjectParsers.ParseFloat;
stringParsers[i] = FunctionStringParsers.ParseFloat;
}
else if (arg == FunctionTypes.Double)
{
parsers[i] = FunctionMValueParsers.ParseDouble;
objectParsers[i] = FunctionObjectParsers.ParseDouble;
stringParsers[i] = FunctionStringParsers.ParseDouble;
}
else if (arg == FunctionTypes.String)
{
parsers[i] = FunctionMValueParsers.ParseString;
objectParsers[i] = FunctionObjectParsers.ParseString;
stringParsers[i] = FunctionStringParsers.ParseString;
}
else if (arg.BaseType == FunctionTypes.Array)
{
parsers[i] = FunctionMValueParsers.ParseArray;
objectParsers[i] = FunctionObjectParsers.ParseArray;
stringParsers[i] = FunctionStringParsers.ParseArray;
}
else if (typeInfo.IsEntity)
{
parsers[i] = FunctionMValueParsers.ParseEntity;
objectParsers[i] = FunctionObjectParsers.ParseEntity;
stringParsers[i] = FunctionStringParsers.ParseEntity;
}
else if (typeInfo.IsDict)
{
parsers[i] = FunctionMValueParsers.ParseDictionary;
objectParsers[i] = FunctionObjectParsers.ParseDictionary;
stringParsers[i] = FunctionStringParsers.ParseDictionary;
}
else if (typeInfo.IsMValueConvertible)
{
parsers[i] = FunctionMValueParsers.ParseConvertible;
objectParsers[i] = FunctionObjectParsers.ParseConvertible;
stringParsers[i] = FunctionStringParsers.ParseConvertible;
}
else if (arg == FunctionTypes.FunctionType)
{
parsers[i] = FunctionMValueParsers.ParseFunction;
objectParsers[i] = FunctionObjectParsers.ParseFunction;
stringParsers[i] = FunctionStringParsers.ParseFunction;
}
else if (typeInfo.IsEnum)
{
parsers[i] = FunctionMValueParsers.ParseEnum;
objectParsers[i] = FunctionObjectParsers.ParseEnum;
}
else
{
// Unsupported type
return(null);
}
}
for (int i = 0, length = typeInfos.Length; i < length; i++)
{
if (!typeInfos[i].IsNullable || i - 1 >= length)
{
continue;
}
if (!typeInfos[i + 1].IsNullable && !typeInfos[i + 1].IsEventParams)
{
throw new ArgumentException(
"Method nullable needs to be at the end of the method. E.g. (int p1, int? p2, int p3?).");
}
}
CallArgsLengthCheck callArgsLengthCheck = CheckArgsLength;
CallArgsLengthCheckPlayer callArgsLengthCheckPlayer = CheckArgsLengthWithPlayer;
if (typeInfos.Length > 0)
{
var lastTypeInfo = typeInfos[typeInfos.Length - 1];
if (lastTypeInfo.IsEventParams)
{
if (lastTypeInfo.IsList)
{
throw new ArgumentException("EventParams needs to be a array.");
}
callArgsLengthCheck = CheckArgsLengthWithEventParams;
callArgsLengthCheckPlayer = CheckArgsLengthWithPlayerWithEventParams;
}
}
return(new Function(func, returnType, genericArguments, parsers, objectParsers, stringParsers, typeInfos,
callArgsLengthCheck, callArgsLengthCheckPlayer, requiredArgsCount));
}