In make_dict check PropertyConfigError for OptionDescription

Begin work's on MetaConfig

tiramisu/config.py

@@ -299,8 +299,11 @@ class SubConfig(object):
 
     def _make_sub_dict(self, opt, path, pathsvalues, _currpath, flatten):
         if isinstance(opt, OptionDescription):
+            try:
                 pathsvalues += getattr(self, path).make_dict(flatten,
                                                              _currpath + path.split('.'))
+            except PropertiesOptionError:
+                pass  # this just a hidden or disabled option
         else:
             try:
                 value = self._getattr(opt._name)
@@ -366,7 +369,7 @@ class Config(SubConfig):
         return None
 
     def _find(self, bytype, byname, byvalue, first, type_='option',
-              _subpath=None):
+              _subpath=None, check_properties=True):
         """
         convenience method for finding an option that lives only in the subtree
 
@@ -426,9 +429,11 @@ class Config(SubConfig):
             if not _filter_by_value():
                 continue
             #remove option with propertyerror, ...
+            if check_properties:
                 try:
                     value = getattr(self, path)
-            except PropertiesOptionError:  # a property restricts the access of the value
+                except PropertiesOptionError:
+                    # a property restricts the access of the value
                     continue
             if not _filter_by_type():
                 continue
@@ -450,6 +455,48 @@ class Config(SubConfig):
             return find_results
 
 
+class MetaConfig(object):
+    __slots__ = ('_children')
+
+    def __init__(self, children):
+        if not isinstance(children, list):
+            raise ValueError(_("metaconfig's children must be a list"))
+        descr = None
+        for child in children:
+            if not isinstance(child, Config):
+                raise ValueError(_("metaconfig's children must be Config, not {0}"
+                                   "".format(type(Config))))
+            if descr is None:
+                descr = child.cfgimpl_get_description()
+            elif descr is child.cfgimpl_get_description():
+                raise ValueError(_('all config in MetaConfig must have same '
+                                   'optiondescription'))
+
+        self._children = children
+
+    def _find(self, bytype, byname, byvalue, first, type_):
+        if type_ not in ('option', 'path'):
+            raise ValueError(_('unknown type_ type {0} for _find'
+                               '').format(type_))
+        #all children have same optiondescription, search in first one's
+        return self._children[0]._find(bytype, byname, byvalue, first=first,
+                                       type_=type_, check_properties=False)
+
+    def find(self, bytype=None, byname=None, byvalue=None, type_='option'):
+        return self._find(bytype, byname, byvalue, type_, first=False)
+
+    def find_first(self, bytype=None, byname=None, byvalue=None,
+                   type_='option'):
+        return self._find(bytype, byname, byvalue, type_, first=True)
+
+    def __setattr__(self, name, value):
+        for child in self._children:
+            try:
+                setattr(child, name, value)
+            except PropertiesOptionError:
+                pass
+
+
 def mandatory_warnings(config):
     """convenience function to trace Options that are mandatory and
     where no value has been set