Add support for String.toLowerCase

3 files changed, 11 insertions, 0 deletions

diff --git a/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java b/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java
index b370f6d..054a359 100644
--- a/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java
+++ b/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java
@@ -38,6 +38,9 @@ public class PrimitiveMethods {
 
             .put("add", (receiver, arguments) ->
                 PythonBinaryOperation.pythonAdd(receiver, arguments.get(0)))
+
+            .put("toLowerCase", (receiver, arguments) ->
+                pythonCall(pythonAttributeAccess(receiver, "lower"), list()))
             
             .build();
     
diff --git a/src/main/java/org/zwobble/couscous/interpreter/values/StringInterpreterValue.java b/src/main/java/org/zwobble/couscous/interpreter/values/StringInterpreterValue.java
index e8fd83b..4fff53e 100644
--- a/src/main/java/org/zwobble/couscous/interpreter/values/StringInterpreterValue.java
+++ b/src/main/java/org/zwobble/couscous/interpreter/values/StringInterpreterValue.java
@@ -26,6 +26,9 @@ public final class StringInterpreterValue implements InterpreterValue {
             return of(arguments.getReceiver().value + right.value);
         })
 
+        .method("toLowerCase", list(), (environment, arguments) ->
+            of(arguments.getReceiver().value.toLowerCase()))
+
         .build();
 
     private final String value;
diff --git a/src/test/java/org/zwobble/couscous/tests/CompilerTests.java b/src/test/java/org/zwobble/couscous/tests/CompilerTests.java
index e8957f7..39fd0ce 100644
--- a/src/test/java/org/zwobble/couscous/tests/CompilerTests.java
+++ b/src/test/java/org/zwobble/couscous/tests/CompilerTests.java
@@ -149,6 +149,11 @@ public abstract class CompilerTests {
         assertEquals(value("42"), evalExpression("String", "\"4\" + \"2\""));
     }
 
+    @Test
+    public void stringToLowerCase() throws Exception {
+        assertEquals(value("patrick wolf"), evalExpression("String", "\"Patrick Wolf\".toLowerCase()"));
+    }
+
     private PrimitiveValue execTestProgram(
         String directoryName,
         TypeName type,