Calling "C" Functions in a Framework - Possible?

Is it possible to call “C” style functions from AppleScript?
I’ve recently start using them in my Objective-C code and find them handy sometimes.
Would love to be able to call them from AppleScript.
But my attempts so far have failed.

In one of my Framework Classes:


#pragma mark TAG CHECKED TYPE STATUS
JREnumDeclare(TagCheckedTypeStatus,
			  Checked_None = 0,					// 0
			  Checked_Whitespace = 1 << 0,		// 1
			  Checked_EpisodeID = 1 << 1,		// 2
			  Checked_CatalogNo = 1 << 2,		// 4
			  Checked_Composer = 1 << 3,		// 8
			  Checked_Label = 1 << 4			// 16
			/// TRIMMED
);

NSString* TagCheckTypeStatusInfo(TagCheckedTypeStatus aCheckTagType);

and in the .m


NSString* TagCheckTypeStatusInfo(TagCheckedTypeStatus aCheckTagType) {
	NSString* infoHeader = @"CHECK STATUS:";
        // TRIMMED
	return [infoHeader infoStringByAddingDetails:infoDetails];
}

Trying from AppleScript fails


use AppleScript version "2.4" -- Yosemite (10.10) or later
use framework "Foundation"
use framework "DJKTelHelperUtilities"
use scripting additions

-- classes, constants, and enums used
property TagCheckedTypeStatus : a reference to current application's TagCheckedTypeStatus
property Checked_Whitespace : a reference to 1
property Checked_Label : a reference to 4

property aTagCheckedTypeInfo1 : missing value
property aTagCheckedTypeInfo2 : missing value

set aTagCheckedType to Checked_Label
set aTagCheckedTypeInfo1 to TagCheckTypeStatusInfo(aTagCheckedType)
set aTagCheckedTypeInfo2 to current application's TagCheckTypeStatusInfo(aTagCheckedType)

I guess I could add some non-instance methods on a Class that then call
the C-Functions?

You can call them, provided the types used as arguments or results are bridgeable (so no CSRefs).