* Fix to SEQUENCE and SET types to give them their private componentTypes

  collection (which is a NamedTypes object) so that they won't collide in
  a MT execution environment.
* Fix to NamedType.__repr__() to work properly.

3 files changed, 21 insertions, 12 deletions

diff --git a/CHANGES b/CHANGES
index 561dedd..6e0cdbd 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,11 @@
+Revision 0.1.8
+--------------
+
+- Fix to SEQUENCE and SET types to give them their private componentTypes
+  collection (which is a NamedTypes object) so that they won't collide in
+  a MT execution environment.
+- Fix to NamedType.__repr__() to work properly.
+
 Revision 0.1.7
 --------------
 
diff --git a/pyasn1/type/namedtype.py b/pyasn1/type/namedtype.py
index 48967a5..c1f36f7 100644
--- a/pyasn1/type/namedtype.py
+++ b/pyasn1/type/namedtype.py
@@ -8,7 +8,7 @@ class NamedType:
     isDefaulted = 0
     def __init__(self, name, t):
         self.__name = name; self.__type = t
-    def __repr__(self): return '%s(%s, %s)' % (
+    def __repr__(self): return '%s(%s, %r)' % (
         self.__class__.__name__, self.__name, self.__type
         )
     def getType(self): return self.__type
@@ -33,10 +33,10 @@ class NamedTypes:
         self.__ambigiousTypes = {}
 
     def __repr__(self):
-        r = '%s(' % self.__class__.__name__
-        for n in self.__namedTypes:
-            r = r + '%r, ' % (n,)
-        return r + ')'
+        return '%s(%s)' % (
+            self.__class__.__name__,
+            ', '.join([ repr(x) for x in self.__namedTypes ])
+        )
     
     def __getitem__(self, idx): return self.__namedTypes[idx]
 
@@ -45,7 +45,9 @@ class NamedTypes:
     else:
         def __bool__(self): return bool(self.__namedTypesLen)
     def __len__(self): return self.__namedTypesLen
-    
+   
+    def clone(self): return self.__class__(*self.__namedTypes)
+     
     def getTypeByPosition(self, idx):
         if idx < 0 or idx >= self.__namedTypesLen:
             raise error.PyAsn1Error('Type position out of range')
diff --git a/pyasn1/type/univ.py b/pyasn1/type/univ.py
index 9cd16f8..58548b4 100644
--- a/pyasn1/type/univ.py
+++ b/pyasn1/type/univ.py
@@ -708,13 +708,12 @@ class SequenceAndSetBase(base.AbstractConstructedAsn1Item):
     componentType = namedtype.NamedTypes()
     def __init__(self, componentType=None, tagSet=None,
                  subtypeSpec=None, sizeSpec=None):
+        if componentType is None:
+            componentType = self.componentType
         base.AbstractConstructedAsn1Item.__init__(
-            self, componentType, tagSet, subtypeSpec, sizeSpec
-            )
-        if self._componentType is None:
-            self._componentTypeLen = 0
-        else:
-            self._componentTypeLen = len(self._componentType)
+            self, componentType.clone(), tagSet, subtypeSpec, sizeSpec
+        )
+        self._componentTypeLen = len(self._componentType)
 
     def __getitem__(self, idx):
         if isinstance(idx, str):