Parses a calculate-action JavaScript source into a FormCalcSpec, or returns null when it is not a recognized AFSimple_Calculate call (custom scripts are left untouched).
null
AFSimple_Calculate
The js value (string or or undefined).
The resulting FormCalcSpec or null.
Parses a calculate-action JavaScript source into a FormCalcSpec, or returns
nullwhen it is not a recognizedAFSimple_Calculatecall (custom scripts are left untouched).