public static FunctionObject FunctionInitialize(FunctionObject f, FunctionCreateKind kind, FormalParameters parameters, FunctionStatementList body, LexicalEnvironment scope)
{
var len = parameters.ExpectedArgumentCount();
f.DefinePropertyOrThrow("length", new PropertyDescriptor(new NumberValue(len), false, false, true));
f.Environment = scope;
f.FormalParameters = parameters;
f.Code = body;
if (kind == FunctionCreateKind.Arrow)
{
f.ThisMode = ThisMode.Lexical;
}
else if (f.Strict)
{
f.ThisMode = ThisMode.Strict;
}
else
{
f.ThisMode = ThisMode.Global;
}
return(f);
}
