Add support for closures

lesscpy/lessc/parser.py

@@ -366,6 +366,8 @@ class LessParser(object):
         """ variable_decl            : variable ':' style_list ';'
         """
         p[0] = Variable(list(p)[1:-1], p.lineno(4))
+        p[0].parse(self.scope)
+        self.scope.add_variable(p[0])
         
 #
 #    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

lesscpy/plib/deferred.py

@@ -60,6 +60,7 @@ class Deferred(Node):
                 res = mixin.call(scope, args)
                 if res: break
             if res:
+                [scope.add_variable(v) for v in mixin.vars]
                 scope.deferred = ident
                 res = [p.parse(scope) for p in res if p]
                 while(any(t for t in res if type(t) is Deferred)):

lesscpy/plib/mixin.py

@@ -30,7 +30,9 @@ class Mixin(Node):
         self.name, args, self.guards = self.tokens[0]
         self.args = [a for a in utility.flatten(args) if a]
         self.body = Block([None, self.tokens[1]], 0)
-        self.scope = scope
+        self.vars = list(utility.flatten([list(v.values()) 
+                                          for v in [s['__variables__'] 
+                                                    for s in scope]]))
         return self
     
     def raw(self):