var-arg-handling.js

CPVarArgHandling_Index = nil;

va_start = function (args, startIndex)  // startIndex instead of parameter name
                                        // isn't great, but is unavoidable since
                                        // they took out argument names in JS 1.3.
                                        // Only way to fix this would be to add it
                                        // to the Obj-J preprocessor.
{
    if (startIndex)
    {
        if (typeof startIndex !== "number")
            throw new Error("Invalid var-args start index: " + startIndex);

        CPVarArgHandling_Index = startIndex + 2;
    }
    else
        CPVarArgHandling_Index = 2;
};

va_arg = function (args)
{
    var value = args[CPVarArgHandling_Index++];
    return value ? value : nil;
};

va_end = function(args)
{
    CPVarArgHandling_Index = nil;
};