From 32c40a7a1609df6f9e8d219f6b0caa89d9e7dbf4 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Mon, 27 Mar 2017 23:35:24 +0100
Subject: Throw exception when creating parameterized type without params

---
 src/main/java/org/zwobble/couscous/types/ParameterizedType.java | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/main/java/org/zwobble/couscous/types/ParameterizedType.java b/src/main/java/org/zwobble/couscous/types/ParameterizedType.java
index 6d4dca1..2f6fbdd 100644
--- a/src/main/java/org/zwobble/couscous/types/ParameterizedType.java
+++ b/src/main/java/org/zwobble/couscous/types/ParameterizedType.java
@@ -14,6 +14,10 @@ public class ParameterizedType implements Type {
     private final List<Type> parameters;
 
     public ParameterizedType(ScalarType rawType, List<Type> parameters) {
+        if (parameters.isEmpty()) {
+            throw new RuntimeException("parameters cannot be empty");
+        }
+
         this.rawType = rawType;
         this.parameters = parameters;
     }
-- 
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