commit b1ebb1b5ba3870e994138e64f92039460f6abecf
author limpbizkit <limpbizkit@d779f126-a31b-0410-b53b-1d3aecad763e> Fri Feb 27 06:04:40 2009 +0000
committer limpbizkit <limpbizkit@d779f126-a31b-0410-b53b-1d3aecad763e> Fri Feb 27 06:04:40 2009 +0000
tree 5f97d6d5a0e651939c8ea59251c4082d883b7909
parent 8bda412e4e6c779d522d5d5c0717fdb13a0d67a5

Installing a null module currently gives a lame error message; this one's better

git-svn-id: https://google-guice.googlecode.com/svn/trunk@870 d779f126-a31b-0410-b53b-1d3aecad763e

src/com/google/inject/spi/Elements.java

diff --git a/src/com/google/inject/spi/Elements.java b/src/com/google/inject/spi/Elements.java
index 0b23dba..44084d7 100644
--- a/src/com/google/inject/spi/Elements.java
+++ b/src/com/google/inject/spi/Elements.java
@@ -37,6 +37,7 @@
 import com.google.inject.internal.ImmutableList;
 import com.google.inject.internal.Lists;
 import static com.google.inject.internal.Preconditions.checkArgument;
+import static com.google.inject.internal.Preconditions.checkNotNull;
 import static com.google.inject.internal.Preconditions.checkState;
 import com.google.inject.internal.PrivateElementsImpl;
 import com.google.inject.internal.ProviderMethodsModule;
@@ -181,6 +182,8 @@
     }
 
     public void install(Module module) {
+      checkNotNull(module, "module");
+
       if (modules.add(module)) {
         Binder binder = this;
         if (module instanceof PrivateModule) {