From 9ed69cadcf684119fb8a1cbc843aa0b1d9c09651 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Tue, 6 Oct 2015 17:24:13 +0100
Subject: Only allow declared fields to be set

---
 .../zwobble/couscous/interpreter/values/ObjectInterpreterValue.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/main/java/org/zwobble/couscous/interpreter/values/ObjectInterpreterValue.java')

diff --git a/src/main/java/org/zwobble/couscous/interpreter/values/ObjectInterpreterValue.java b/src/main/java/org/zwobble/couscous/interpreter/values/ObjectInterpreterValue.java
index acb6ef7..7ff8bb1 100644
--- a/src/main/java/org/zwobble/couscous/interpreter/values/ObjectInterpreterValue.java
+++ b/src/main/java/org/zwobble/couscous/interpreter/values/ObjectInterpreterValue.java
@@ -4,6 +4,7 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
 
+import org.zwobble.couscous.interpreter.NoSuchField;
 import org.zwobble.couscous.values.PrimitiveValue;
 
 public class ObjectInterpreterValue implements InterpreterValue {
@@ -35,6 +36,7 @@ public class ObjectInterpreterValue implements InterpreterValue {
     }
 
     public void setField(String fieldName, InterpreterValue value) {
-        fields.put(fieldName, value);
+        type.getField(fieldName).orElseThrow(() -> new NoSuchField(fieldName));
+        fields.put(fieldName, value);   
     }
 }
-- 
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