Throwing exception on trait static member

These will be supported in future versions; this is not something that I
want to rush, nor is it something I want to hold up the first GNU release;
it is likely to be a much lesser-used feature.

lib/Trait.js

@@ -152,6 +152,15 @@ function _parseMember( name, value, keywords, h )
         throw Error( "Traits may not define __construct" );
     }
 
+    // will be supported in future versions
+    if ( keywords['static'] )
+    {
+        throw Error(
+            "Cannot define member `" + name + "'; static trait " +
+            "members are currently unsupported"
+        );
+    }
+
     // apply original handler
     h.apply( this, arguments );
 }

test/Trait/DefinitionTest.js

@@ -390,4 +390,27 @@ require( 'common' ).testCase(
             },
         } )().go();
     },
+
+
+    /**
+     * Support for static members will be added in future versions; this is
+     * not something that the author wanted to rush for the first trait
+     * release, as static members have their own odd quirks.
+     */
+    'Trait static members are prohibited': function()
+    {
+        var Sut = this.Sut;
+
+        // property
+        this.assertThrows( function()
+        {
+            Sut( { 'static private foo': 'prop' } );
+        } );
+
+        // method
+        this.assertThrows( function()
+        {
+            Sut( { 'static foo': function() {} } );
+        } );
+    },
 } );