Implement CQL ConvertsTo: Decimal, Integer, Long, Quantity and String

modules/cql/src/blaze/elm/boolean.clj

@@ -16,6 +16,13 @@
   (to-boolean [x] x))
 
 
+;; 22.24. ToDecimal
+(extend-protocol p/ToDecimal
+  Boolean
+  (to-decimal [x]
+    (if (true? x) 1.0 0.0)))
+
+
 ;; 22.25. ToInteger
 (extend-protocol p/ToInteger
   Boolean
@@ -28,3 +35,10 @@
   Boolean
   (to-long [x]
     (if (true? x) 1 0)))
+
+
+;; 22.30. ToString
+(extend-protocol p/ToString
+  Boolean
+  (to-string [x]
+    (str x)))

modules/cql/src/blaze/elm/compiler/core.clj

@@ -109,5 +109,4 @@
 
 (extend-protocol p/ToString
   Object
-  (to-string [x]
-    (str x)))
+  (to-string [_]))

modules/cql/src/blaze/elm/compiler/type_operators.clj

@@ -134,17 +134,37 @@
 
 ;; TODO 22.9. ConvertsToDateTime
 
-;; TODO 22.10. ConvertsToDecimal
+;; 22.10. ConvertsToDecimal
+(defunop converts-to-decimal [operand]
+  (when (some? operand)
+    (some? (p/to-decimal operand))))
+
+
+;; 22.11. ConvertsToLong
+(defunop converts-to-long [operand]
+  (when (some? operand)
+    (some? (p/to-long operand))))
+
+
+;; 22.12. ConvertsToInteger
+(defunop converts-to-integer [operand]
+  (when (some? operand)
+    (some? (p/to-integer operand))))
 
-;; TODO 22.11. ConvertsToLong
 
-;; TODO 22.12. ConvertsToInteger
+;; 22.13. ConvertsToQuantity
+(defunop converts-to-quantity [operand]
+  (when (some? operand)
+    (some? (p/to-quantity operand))))
 
-;; TODO 22.13. ConvertsToQuantity
 
 ;; TODO 22.14. ConvertsToRatio
 
-;; TODO 22.15. ConvertsToString
+;; 22.15. ConvertsToString
+(defunop converts-to-string [operand]
+  (when (some? operand)
+    (some? (p/to-string operand))))
+
 
 ;; TODO 22.16. ConvertsToTime
 

modules/cql/src/blaze/elm/date_time.clj

@@ -13,8 +13,7 @@
     [blaze.fhir.spec.type OffsetInstant]
     [blaze.fhir.spec.type.system DateTimeYear DateTimeYearMonth DateTimeYearMonthDay]
     [java.time LocalDate LocalDateTime LocalTime OffsetDateTime Year YearMonth Instant]
-    [java.time.temporal ChronoField ChronoUnit Temporal TemporalAccessor]
-    [java.util Map]))
+    [java.time.temporal ChronoField ChronoUnit Temporal TemporalAccessor]))
 
 
 (set! *warn-on-reflection* true)
@@ -1325,15 +1324,39 @@
 
   String
   (to-date-time [s now]
-    (p/to-date-time (system/parse-date-time s) now))
-
-  ;; for the anomaly
-  Map
-  (to-date-time [_ _]))
+    (p/to-date-time (system/parse-date-time s) now)))
 
 
 ;; 22.30. ToString
 (extend-protocol p/ToString
   PrecisionLocalTime
   (to-string [{:keys [local-time]}]
-    (str local-time)))
+    (str local-time))
+
+  Year
+  (to-string [x]
+    (str x))
+
+  DateTimeYear
+  (to-string [x]
+    (str x))
+
+  YearMonth
+  (to-string [x]
+    (str x))
+
+  DateTimeYearMonth
+  (to-string [x]
+    (str x))
+
+  LocalDate
+  (to-string [x]
+    (str x))
+
+  DateTimeYearMonthDay
+  (to-string [x]
+    (str x))
+
+  LocalDateTime
+  (to-string [x]
+    (str x)))

modules/cql/src/blaze/elm/quantity.clj

@@ -223,9 +223,10 @@
   String
   (to-quantity [s]
     ;; (+|-)?#0(.0#)?('<unit>')?
-    (let [[_ value unit] (re-matches #"(\d+(?:\.\d+)?)\s*('[^']+')?" s)]
+    (let [[_ value unit] (re-matches #"([+-]?\d+(?:\.\d+)?)\s*('[^']+')?" s)]
       (when value
-        (quantity (p/to-decimal value) (or (str/trim unit "'") "1"))))))
+        (when-let [value (p/to-decimal value)]
+          (quantity value (or (str/trim unit "'") "1")))))))
 
 
 ;; 22.30. ToString

modules/cql/src/blaze/elm/string.clj

@@ -52,3 +52,9 @@
     (try
       (p/to-decimal (BigDecimal. s))
       (catch Exception _))))
+
+;; 22.30. ToString
+(extend-protocol p/ToString
+  String
+  (to-string [s]
+    (str s)))

modules/cql/src/blaze/elm/tuple.clj

@@ -5,7 +5,7 @@
   (:import
     [java.util Map]))
 
-
+;; 12.1. Equal
 (extend-protocol p/Equal
   Map
   (equal [x y]
@@ -17,3 +17,9 @@
             false)
           false)
         true))))
+
+;; 22.23. ToDateTime
+(extend-protocol p/ToDateTime
+  ;; for the anomaly
+  Map
+  (to-date-time [_ _]))