Refactoring error messages. I changed 'em from public static final constants to methods. The benefit is that now the arguments are typechecked. More importantly, now we can gather coverage on methods. Which opens the door to figuring out which methods we have test coverage for (not very many!)

git-svn-id: https://google-guice.googlecode.com/svn/trunk@516 d779f126-a31b-0410-b53b-1d3aecad763e
diff --git a/src/com/google/inject/ScopesCommandProcessor.java b/src/com/google/inject/ScopesCommandProcessor.java
index 87c0ce7..c2a2894 100644
--- a/src/com/google/inject/ScopesCommandProcessor.java
+++ b/src/com/google/inject/ScopesCommandProcessor.java
@@ -16,13 +16,12 @@
 
 package com.google.inject;
 
+import static com.google.common.base.Preconditions.checkNotNull;
 import com.google.inject.commands.BindScopeCommand;
 import com.google.inject.internal.Annotations;
 import com.google.inject.internal.ErrorHandler;
-import com.google.inject.internal.ErrorMessages;
+import com.google.inject.internal.ErrorMessage;
 import com.google.inject.internal.StackTraceElements;
-import static com.google.common.base.Preconditions.checkNotNull;
-
 import java.lang.annotation.Annotation;
 import java.util.Map;
 
@@ -48,20 +47,19 @@
 
     if (!Scopes.isScopeAnnotation(annotationType)) {
       addError(StackTraceElements.forType(annotationType),
-          ErrorMessages.MISSING_SCOPE_ANNOTATION);
+          ErrorMessage.missingScopeAnnotation());
       // Go ahead and bind anyway so we don't get collateral errors.
     }
 
     if (!Annotations.isRetainedAtRuntime(annotationType)) {
       addError(StackTraceElements.forType(annotationType),
-          ErrorMessages.MISSING_RUNTIME_RETENTION, command.getSource());
+          ErrorMessage.missingRuntimeRetention(command.getSource()));
       // Go ahead and bind anyway so we don't get collateral errors.
     }
 
     Scope existing = scopes.get(checkNotNull(annotationType, "annotation type"));
     if (existing != null) {
-      addError(command.getSource(), ErrorMessages.DUPLICATE_SCOPES, existing,
-          annotationType, scope);
+      addError(command.getSource(), ErrorMessage.duplicateScopes(existing, annotationType, scope));
     } else {
       scopes.put(annotationType, checkNotNull(scope, "scope"));
     }