[rules-users] java script to drl

[G S]

I have a source code written in Java script but I want that logic to
be written in .drl (drools). Any guidelines, or ideas how I can
convert java script to rules?
sample source code attached.
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function() {  var patient = this;  var measure = patient.measures["0012"];  if (measure == null)    measure={};  <%= init_js_frameworks %>  var day = 24*60*60;  var year = 365 * day;  var effective_date =  <%= effective_date %>;  var earliest_encounter = effective_date - year;  var conception = normalize(measure.estimated_date_of_conception_patient_characteristic);  var estimated_conception = null;  var population = function() {    var live_birth_diagnosis = inRange(measure.delivery_live_births_diagnosis_diagnosis_active, earliest_encounter, effective_date);    var live_birth_procedure = inRange(measure.delivery_live_births_procedure_procedure_performed, earliest_encounter, effective_date);    return live_birth_diagnosis && live_birth_procedure;  }  var denominator = function() {    if (conception.length==0)      return false;    estimated_conception = _.max(conception);    return inRange(measure.prenatal_visit_encounter, estimated_conception, effective_date);  }  var numerator = function() {    var estimated_conception_within_ten_months = actionFollowingSomething(estimated_conception, measure.delivery_live_births_procedure_procedure_performed, 304*day);    var encounters_in_range = _.sortBy(selectWithinRange(measure.prenatal_visit_encounter, estimated_conception, effective_date), function(num){ return num; });  // there has to be at least 1 due to denominator    var first_encounter = encounters_in_range[0];    var hiv_screen_after_first = actionFollowingSomething(first_encounter, measure.hiv_screening_laboratory_test_performed, 30*day);    var hiv_screen_after_second = false;    if(encounters_in_range.length > 1) {      var second_encounter = encounters_in_range[1];      hiv_screen_after_second = actionFollowingSomething(second_encounter, measure.hiv_screening_laboratory_test_performed, 30*day);    }    return estimated_conception_within_ten_months && (hiv_screen_after_first || hiv_screen_after_second);  }  var exclusion = function() {    var hiv_prior_to_encounter = actionFollowingSomething(measure.hiv_diagnosis_active, measure.prenatal_visit_encounter, year) +                                 actionFollowingSomething(measure.hiv_diagnosis_inactive, measure.prenatal_visit_encounter, year);    var medical_reason = inRange(measure.medical_reason_laboratory_test_not_done, earliest_encounter, effective_date);    var patient_reason = inRange(measure.patient_reason_laboratory_test_not_done, earliest_encounter, effective_date);    return hiv_prior_to_encounter || medical_reason || patient_reason;  }  map(patient, population, denominator, numerator, exclusion);};