Implement upper and lower invocations

beda-software · Aug 14, 2023 · 1a68d5c · 1a68d5c
1 parent 3a9845c
commit 1a68d5c
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diff --git a/fhirpathpy/engine/invocations/__init__.py b/fhirpathpy/engine/invocations/__init__.py
@@ -55,6 +55,8 @@
     "startsWith": {"fn": strings.starts_with, "arity": {1: ["String"]}, "nullable_input": True},
     "endsWith": {"fn": strings.ends_with, "arity": {1: ["String"]}, "nullable_input": True},
     "contains": {"fn": strings.contains_fn, "arity": {1: ["String"]}, "nullable_input": True},
+    "upper": {"fn": strings.upper, "arity": {0: ["String"]}, "nullable_input": True},
+    "lower": {"fn": strings.lower, "arity": {0: ["String"]}, "nullable_input": True},
     "replace": {"fn": strings.replace, "arity": {2: ["String", "String"]}, "nullable_input": True},
     "matches": {"fn": strings.matches, "arity": {1: ["String"]}, "nullable_input": True},
     "replaceMatches": {

diff --git a/fhirpathpy/engine/invocations/strings.py b/fhirpathpy/engine/invocations/strings.py
@@ -43,6 +43,16 @@ def contains_fn(ctx, coll, substr):
     return substr in string
 
 
+def upper(ctx, coll):
+    string = ensure_string_singleton(coll)
+    return string.upper()
+
+
+def lower(ctx, coll):
+    string = ensure_string_singleton(coll)
+    return string.lower()
+
+
 # test function
 def matches(ctx, coll, regex):
     string = ensure_string_singleton(coll)