Implemented private static properties

lib/class_builder.js

@@ -693,7 +693,15 @@ function attachStatic( ctor, members, base, inheriting )
 
                 // Determine if we were invoked in the context of a class. If
                 // so, use that.  Otherwise, use ourself.
-                context = ( this.___$$sprops$$ ) ? this : ctor
+                context = ( this.___$$sprops$$ ) ? this : ctor,
+
+                // We are in a subtype if the context does not match the
+                // constructor. This works because, when invoked for the first
+                // time, this method is not bound to the constructor. In such a
+                // case, we default the context to the constructor and pass that
+                // down the line to each recursive call. Therefore, recursive
+                // calls to subtypes will have a context mismatch.
+                in_subtype = ( context !== ctor )
             ;
 
             // Attempt to locate the property. First, we check public. If not
@@ -703,7 +711,14 @@ function attachStatic( ctor, members, base, inheriting )
             found = has.call( props[ 'public' ], prop ) && 'public';
             if ( !found && sprop_internal )
             {
-                found = has.call( props[ 'protected' ], prop ) && 'protected';
+                // Check for protected/private. We only check for private
+                // properties if we are not currently checking the properties of
+                // a subtype. This works because the context is passed to each
+                // recursive call.
+                found = has.call( props[ 'protected' ], prop ) && 'protected'
+                    || !in_subtype
+                        && has.call( props[ 'private' ], prop ) && 'private'
+                ;
             }
 
             // if we don't own the property, let the parent(s) handle it

test/test-class_builder-static.js

@@ -594,6 +594,9 @@ var common    = require( './common' ),
     var val = 'foo',
         Foo = builder.build(
         {
+            'private static prop': val,
+
+
             // the same rules should apply to methods
             'private static baz': function()
             {
@@ -611,6 +614,16 @@ var common    = require( './common' ),
             {
                 return this.__self.baz();
             },
+
+            'public static staticGetProp': function()
+            {
+                return this.$('prop');
+            },
+
+            'public instGetProp': function()
+            {
+                return this.__self.$('prop');
+            },
         } );
 
     assert.equal( Foo.baz, undefined,
@@ -624,6 +637,14 @@ var common    = require( './common' ),
     assert.equal( Foo().instBaz(), val,
         "Private methods are accessible to instance methods"
     );
+
+    assert.equal( Foo.staticGetProp(), val,
+        "Private static properties are accessible to static methods"
+    );
+
+    assert.equal( Foo().instGetProp(), val,
+        "Private static properties are accessible to instance methods"
+    );
 } )();
 
 
@@ -635,6 +656,7 @@ var common    = require( './common' ),
 {
     var Foo = builder.build(
         {
+            'private static prop': 'foo',
             'private static priv': function() {},
         } ),
 
@@ -644,12 +666,30 @@ var common    = require( './common' ),
             {
                 return this.priv;
             },
+
+            'public static staticGetProp': function()
+            {
+                return this.$('prop');
+            },
+
+            'public instGetProp': function()
+            {
+                return this.__self.$('prop');
+            },
         } )
     ;
 
     assert.equal( SubFoo.getPriv(), undefined,
         "Private static methods should not be inherited by subtypes"
     );
+
+    assert.equal( SubFoo().instGetProp(), undefined,
+        "Private static properties should not be inherited by subtypes (inst)"
+    );
+
+    assert.equal( SubFoo.staticGetProp(), undefined,
+        "Private static properties should not be inherited by subtypes (static)"
+    );
 } )();