Add builtin method calls with no arguments

1 files changed, 9 insertions, 0 deletions

diff --git a/src/main/java/org/zwobble/couscous/values/StringValue.java b/src/main/java/org/zwobble/couscous/values/StringValue.java
index 1478d41..0e3f626 100644
--- a/src/main/java/org/zwobble/couscous/values/StringValue.java
+++ b/src/main/java/org/zwobble/couscous/values/StringValue.java
@@ -5,4 +5,13 @@ import lombok.Value;
 @Value
 public class StringValue implements InterpreterValue {
     String value;
+
+    @Override
+    public InterpreterValue callMethod(String methodName) {
+        if (methodName == "length") {
+            return new IntegerValue(value.length());
+        } else {
+            throw new UnsupportedOperationException();
+        }
+    }
 }