python: annotate all calls into libnotmuch with types

Add type information to the ctypes._FuncPtr wrappers and
use the wrapper classes instead of c_void_p for pointers
to notmuch_*_t.

This enables the ctypes library to type check parameters
being handed to functions from the notmuch library.

Signed-off-by: Justus Winter <4winter@informatik.uni-hamburg.de>

5 files changed, 255 insertions, 71 deletions

diff --git a/bindings/python/notmuch/database.py b/bindings/python/notmuch/database.py
index f4bc53e0..25b4b1b1 100644
--- a/bindings/python/notmuch/database.py
+++ b/bindings/python/notmuch/database.py
@@ -18,9 +18,11 @@ Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
 """
 
 import os
-from ctypes import c_int, c_char_p, c_void_p, c_uint, c_long, byref
+from ctypes import c_int, c_char_p, c_void_p, c_uint, c_long, byref, POINTER
 from notmuch.globals import (nmlib, STATUS, NotmuchError, NotInitializedError,
-     NullPointerError, OutOfMemoryError, XapianError, Enum, _str)
+     NullPointerError, OutOfMemoryError, XapianError, Enum, _str,
+     NotmuchDatabaseP, NotmuchDirectoryP, NotmuchMessageP, NotmuchTagsP,
+     NotmuchQueryP, NotmuchMessagesP, NotmuchThreadsP, NotmuchFilenamesP)
 from notmuch.thread import Threads
 from notmuch.message import Messages, Message
 from notmuch.tag import Tags
@@ -56,37 +58,48 @@ class Database(object):
 
     """notmuch_database_get_directory"""
     _get_directory = nmlib.notmuch_database_get_directory
-    _get_directory.restype = c_void_p
+    _get_directory.argtypes = [NotmuchDatabaseP, c_char_p]
+    _get_directory.restype = NotmuchDirectoryP
 
     """notmuch_database_get_path"""
     _get_path = nmlib.notmuch_database_get_path
+    _get_path.argtypes = [NotmuchDatabaseP]
     _get_path.restype = c_char_p
 
     """notmuch_database_get_version"""
     _get_version = nmlib.notmuch_database_get_version
+    _get_version.argtypes = [NotmuchDatabaseP]
     _get_version.restype = c_uint
 
     """notmuch_database_open"""
     _open = nmlib.notmuch_database_open
-    _open.restype = c_void_p
+    _open.argtypes = [c_char_p, c_uint]
+    _open.restype = NotmuchDatabaseP
 
     """notmuch_database_upgrade"""
     _upgrade = nmlib.notmuch_database_upgrade
-    _upgrade.argtypes = [c_void_p, c_void_p, c_void_p]
+    _upgrade.argtypes = [NotmuchDatabaseP, c_void_p, c_void_p]
+    _upgrade.restype = c_uint
 
     """ notmuch_database_find_message"""
     _find_message = nmlib.notmuch_database_find_message
+    _find_message.argtypes = [NotmuchDatabaseP, c_char_p, POINTER(NotmuchMessageP)]
+    _find_message.restype = c_uint
 
     """notmuch_database_find_message_by_filename"""
     _find_message_by_filename = nmlib.notmuch_database_find_message_by_filename
+    _find_message_by_filename.argtypes = [NotmuchDatabaseP, c_char_p, POINTER(NotmuchMessageP)]
+    _find_message_by_filename.restype = c_uint
 
     """notmuch_database_get_all_tags"""
     _get_all_tags = nmlib.notmuch_database_get_all_tags
-    _get_all_tags.restype = c_void_p
+    _get_all_tags.argtypes = [NotmuchDatabaseP]
+    _get_all_tags.restype = NotmuchTagsP
 
     """notmuch_database_create"""
     _create = nmlib.notmuch_database_create
-    _create.restype = c_void_p
+    _create.argtypes = [c_char_p]
+    _create.restype = NotmuchDatabaseP
 
     def __init__(self, path=None, create=False, mode=0):
         """If *path* is `None`, we will try to read a users notmuch
@@ -186,6 +199,10 @@ class Database(object):
         self._assert_db_is_initialized()
         return Database._get_version(self._db)
 
+    _needs_upgrade = nmlib.notmuch_database_needs_upgrade
+    _needs_upgrade.argtypes = [NotmuchDatabaseP]
+    _needs_upgrade.restype = bool
+
     def needs_upgrade(self):
         """Does this database need to be upgraded before writing to it?
 
@@ -197,7 +214,7 @@ class Database(object):
         :returns: `True` or `False`
         """
         self._assert_db_is_initialized()
-        return nmlib.notmuch_database_needs_upgrade(self._db)
+        return self._needs_upgrade(self._db)
 
     def upgrade(self):
         """Upgrades the current database
@@ -219,6 +236,10 @@ class Database(object):
         #TODO: catch exceptions, document return values and etc
         return status
 
+    _begin_atomic = nmlib.notmuch_database_begin_atomic
+    _begin_atomic.argtypes = [NotmuchDatabaseP]
+    _begin_atomic.restype = c_uint
+
     def begin_atomic(self):
         """Begin an atomic database operation
 
@@ -236,11 +257,15 @@ class Database(object):
 
         *Added in notmuch 0.9*"""
         self._assert_db_is_initialized()
-        status = nmlib.notmuch_database_begin_atomic(self._db)
+        status = self._begin_atomic(self._db)
         if status != STATUS.SUCCESS:
             raise NotmuchError(status)
         return status
 
+    _end_atomic = nmlib.notmuch_database_end_atomic
+    _end_atomic.argtypes = [NotmuchDatabaseP]
+    _end_atomic.restype = c_uint
+
     def end_atomic(self):
         """Indicate the end of an atomic database operation
 
@@ -258,7 +283,7 @@ class Database(object):
 
         *Added in notmuch 0.9*"""
         self._assert_db_is_initialized()
-        status = nmlib.notmuch_database_end_atomic(self._db)
+        status = self._end_atomic(self._db)
         if status != STATUS.SUCCESS:
             raise NotmuchError(status)
         return status
@@ -299,6 +324,10 @@ class Database(object):
         # return the Directory, init it with the absolute path
         return Directory(_str(abs_dirpath), dir_p, self)
 
+    _add_message = nmlib.notmuch_database_add_message
+    _add_message.argtypes = [NotmuchDatabaseP, c_char_p, POINTER(NotmuchMessageP)]
+    _add_message.restype = c_uint
+
     def add_message(self, filename, sync_maildir_flags=False):
         """Adds a new message to the database
 
@@ -350,9 +379,7 @@ class Database(object):
         """
         self._assert_db_is_initialized()
         msg_p = c_void_p()
-        status = nmlib.notmuch_database_add_message(self._db,
-                                                  _str(filename),
-                                                  byref(msg_p))
+        status = self._add_message(self._db, _str(filename), byref(msg_p))
 
         if not status in [STATUS.SUCCESS, STATUS.DUPLICATE_MESSAGE_ID]:
             raise NotmuchError(status)
@@ -364,6 +391,10 @@ class Database(object):
             msg.maildir_flags_to_tags()
         return (msg, status)
 
+    _remove_message = nmlib.notmuch_database_remove_message
+    _remove_message.argtypes = [NotmuchDatabaseP, c_char_p]
+    _remove_message.restype = c_uint
+
     def remove_message(self, filename):
         """Removes a message (filename) from the given notmuch database
 
@@ -392,8 +423,7 @@ class Database(object):
                removed.
         """
         self._assert_db_is_initialized()
-        return nmlib.notmuch_database_remove_message(self._db,
-                                                       filename)
+        return self._remove_message(self._db, filename)
 
     def find_message(self, msgid):
         """Returns a :class:`Message` as identified by its message ID
@@ -491,10 +521,14 @@ class Database(object):
     def __repr__(self):
         return "'Notmuch DB " + self.get_path() + "'"
 
+    _close = nmlib.notmuch_database_close
+    _close.argtypes = [NotmuchDatabaseP]
+    _close.restype = None
+
     def __del__(self):
         """Close and free the notmuch database if needed"""
         if self._db is not None:
-            nmlib.notmuch_database_close(self._db)
+            self._close(self._db)
 
     def _get_user_default_db(self):
         """ Reads a user's notmuch config and returns his db location
@@ -545,18 +579,22 @@ class Query(object):
 
     """notmuch_query_create"""
     _create = nmlib.notmuch_query_create
-    _create.restype = c_void_p
+    _create.argtypes = [NotmuchDatabaseP, c_char_p]
+    _create.restype = NotmuchQueryP
 
     """notmuch_query_search_threads"""
     _search_threads = nmlib.notmuch_query_search_threads
-    _search_threads.restype = c_void_p
+    _search_threads.argtypes = [NotmuchQueryP]
+    _search_threads.restype = NotmuchThreadsP
 
     """notmuch_query_search_messages"""
     _search_messages = nmlib.notmuch_query_search_messages
-    _search_messages.restype = c_void_p
+    _search_messages.argtypes = [NotmuchQueryP]
+    _search_messages.restype = NotmuchMessagesP
 
     """notmuch_query_count_messages"""
     _count_messages = nmlib.notmuch_query_count_messages
+    _count_messages.argtypes = [NotmuchQueryP]
     _count_messages.restype = c_uint
 
     def __init__(self, db, querystr):
@@ -602,6 +640,10 @@ class Query(object):
             raise NullPointerError
         self._query = query_p
 
+    _set_sort = nmlib.notmuch_query_set_sort
+    _set_sort.argtypes = [NotmuchQueryP, c_uint]
+    _set_sort.argtypes = None
+
     def set_sort(self, sort):
         """Set the sort order future results will be delivered in
 
@@ -609,7 +651,7 @@ class Query(object):
         """
         self._assert_query_is_initialized()
         self.sort = sort
-        nmlib.notmuch_query_set_sort(self._query, sort)
+        self._set_sort(self._query, sort)
 
     def search_threads(self):
         """Execute a query for threads
@@ -661,10 +703,14 @@ class Query(object):
         self._assert_query_is_initialized()
         return Query._count_messages(self._query)
 
+    _destroy = nmlib.notmuch_query_destroy
+    _destroy.argtypes = [NotmuchQueryP]
+    _destroy.restype = None
+
     def __del__(self):
         """Close and free the Query"""
         if self._query is not None:
-            nmlib.notmuch_query_destroy(self._query)
+            self._destroy(self._query)
 
 
 class Directory(object):
@@ -683,19 +729,23 @@ class Directory(object):
 
     """notmuch_directory_get_mtime"""
     _get_mtime = nmlib.notmuch_directory_get_mtime
+    _get_mtime.argtypes = [NotmuchDirectoryP]
     _get_mtime.restype = c_long
 
     """notmuch_directory_set_mtime"""
     _set_mtime = nmlib.notmuch_directory_set_mtime
-    _set_mtime.argtypes = [c_char_p, c_long]
+    _set_mtime.argtypes = [NotmuchDirectoryP, c_long]
+    _set_mtime.restype = c_uint
 
     """notmuch_directory_get_child_files"""
     _get_child_files = nmlib.notmuch_directory_get_child_files
-    _get_child_files.restype = c_void_p
+    _get_child_files.argtypes = [NotmuchDirectoryP]
+    _get_child_files.restype = NotmuchFilenamesP
 
     """notmuch_directory_get_child_directories"""
     _get_child_directories = nmlib.notmuch_directory_get_child_directories
-    _get_child_directories.restype = c_void_p
+    _get_child_directories.argtypes = [NotmuchDirectoryP]
+    _get_child_directories.restype = NotmuchFilenamesP
 
     def _assert_dir_is_initialized(self):
         """Raises a NotmuchError(:attr:`STATUS`.NOT_INITIALIZED) if dir_p is None"""
@@ -815,10 +865,14 @@ class Directory(object):
         """Object representation"""
         return "<notmuch Directory object '%s'>" % self._path
 
+    _destroy = nmlib.notmuch_directory_destroy
+    _destroy.argtypes = [NotmuchDirectoryP]
+    _destroy.argtypes = None
+
     def __del__(self):
         """Close and free the Directory"""
         if self._dir_p is not None:
-            nmlib.notmuch_directory_destroy(self._dir_p)
+            self._destroy(self._dir_p)
 
 
 class Filenames(object):
@@ -826,6 +880,7 @@ class Filenames(object):
 
     #notmuch_filenames_get
     _get = nmlib.notmuch_filenames_get
+    _get.argtypes = [NotmuchFilenamesP]
     _get.restype = c_char_p
 
     def __init__(self, files_p, parent):
@@ -844,16 +899,24 @@ class Filenames(object):
         """ Make Filenames an iterator """
         return self
 
+    _valid = nmlib.notmuch_filenames_valid
+    _valid.argtypes = [NotmuchFilenamesP]
+    _valid.restype = bool
+
+    _move_to_next = nmlib.notmuch_filenames_move_to_next
+    _move_to_next.argtypes = [NotmuchFilenamesP]
+    _move_to_next.restype = None
+
     def next(self):
         if self._files_p is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        if not nmlib.notmuch_filenames_valid(self._files_p):
+        if not self._valid(self._files_p):
             self._files_p = None
             raise StopIteration
 
         file = Filenames._get(self._files_p)
-        nmlib.notmuch_filenames_move_to_next(self._files_p)
+        self._move_to_next(self._files_p)
         return file
 
     def __len__(self):
@@ -872,13 +935,17 @@ class Filenames(object):
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
         i = 0
-        while nmlib.notmuch_filenames_valid(self._files_p):
-            nmlib.notmuch_filenames_move_to_next(self._files_p)
+        while self._valid(self._files_p):
+            self._move_to_next(self._files_p)
             i += 1
         self._files_p = None
         return i
 
+    _destroy = nmlib.notmuch_filenames_destroy
+    _destroy.argtypes = [NotmuchFilenamesP]
+    _destroy.restype = None
+
     def __del__(self):
         """Close and free Filenames"""
         if self._files_p is not None:
-            nmlib.notmuch_filenames_destroy(self._files_p)
+            self._destroy(self._files_p)
diff --git a/bindings/python/notmuch/filename.py b/bindings/python/notmuch/filename.py
index de4d785a..077754e0 100644
--- a/bindings/python/notmuch/filename.py
+++ b/bindings/python/notmuch/filename.py
@@ -17,7 +17,8 @@ along with notmuch.  If not, see <http://www.gnu.org/licenses/>.
 Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
 """
 from ctypes import c_char_p
-from notmuch.globals import nmlib, STATUS, NotmuchError
+from notmuch.globals import (nmlib, STATUS, NotmuchError,
+    NotmuchFilenamesP, NotmuchMessagesP, NotmuchMessageP)
 
 
 class Filenames(object):
@@ -50,6 +51,7 @@ class Filenames(object):
 
     #notmuch_filenames_get
     _get = nmlib.notmuch_filenames_get
+    _get.argtypes = [NotmuchFilenamesP]
     _get.restype = c_char_p
 
     def __init__(self, files_p, parent):
@@ -74,6 +76,14 @@ class Filenames(object):
         #save reference to parent object so we keep it alive
         self._parent = parent
 
+    _valid = nmlib.notmuch_filenames_valid
+    _valid.argtypes = [NotmuchFilenamesP]
+    _valid.restype = bool
+
+    _move_to_next = nmlib.notmuch_filenames_move_to_next
+    _move_to_next.argtypes = [NotmuchFilenamesP]
+    _move_to_next.restype = None
+
     def as_generator(self):
         """Return generator of Filenames
 
@@ -82,9 +92,9 @@ class Filenames(object):
         if self._files is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        while nmlib.notmuch_filenames_valid(self._files):
+        while self._valid(self._files):
             yield Filenames._get(self._files)
-            nmlib.notmuch_filenames_move_to_next(self._files)
+            self._move_to_next(self._files)
 
         self._files = None
 
@@ -101,7 +111,11 @@ class Filenames(object):
         """
         return "\n".join(self)
 
+    _destroy = nmlib.notmuch_filenames_destroy
+    _destroy.argtypes = [NotmuchMessageP]
+    _destroy.restype = None
+
     def __del__(self):
         """Close and free the notmuch filenames"""
         if self._files is not None:
-            nmlib.notmuch_filenames_destroy(self._files)
+            self._destroy(self._files)
diff --git a/bindings/python/notmuch/message.py b/bindings/python/notmuch/message.py
index 4bf90c22..e0c7eda2 100644
--- a/bindings/python/notmuch/message.py
+++ b/bindings/python/notmuch/message.py
@@ -21,7 +21,8 @@ Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
 
 from ctypes import c_char_p, c_void_p, c_long, c_uint, c_int
 from datetime import date
-from notmuch.globals import nmlib, STATUS, NotmuchError, Enum, _str
+from notmuch.globals import (nmlib, STATUS, NotmuchError, Enum, _str,
+    NotmuchTagsP, NotmuchMessagesP, NotmuchMessageP, NotmuchFilenamesP)
 from notmuch.tag import Tags
 from notmuch.filename import Filenames
 import sys
@@ -92,10 +93,12 @@ class Messages(object):
 
     #notmuch_messages_get
     _get = nmlib.notmuch_messages_get
-    _get.restype = c_void_p
+    _get.argtypes = [NotmuchMessagesP]
+    _get.restype = NotmuchMessageP
 
     _collect_tags = nmlib.notmuch_messages_collect_tags
-    _collect_tags.restype = c_void_p
+    _collect_tags.argtypes = [NotmuchMessagesP]
+    _collect_tags.restype = NotmuchTagsP
 
     def __init__(self, msgs_p, parent=None):
         """
@@ -146,16 +149,24 @@ class Messages(object):
         """ Make Messages an iterator """
         return self
 
+    _valid = nmlib.notmuch_messages_valid
+    _valid.argtypes = [NotmuchMessagesP]
+    _valid.restype = bool
+
+    _move_to_next = nmlib.notmuch_messages_move_to_next
+    _move_to_next.argtypes = [NotmuchMessagesP]
+    _move_to_next.restype = None
+
     def next(self):
         if self._msgs is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        if not nmlib.notmuch_messages_valid(self._msgs):
+        if not self._valid(self._msgs):
             self._msgs = None
             raise StopIteration
 
         msg = Message(Messages._get(self._msgs), self)
-        nmlib.notmuch_messages_move_to_next(self._msgs)
+        self._move_to_next(self._msgs)
         return msg
 
     def __nonzero__(self):
@@ -163,12 +174,16 @@ class Messages(object):
         :return: True if there is at least one more thread in the
             Iterator, False if not."""
         return self._msgs is not None and \
-            nmlib.notmuch_messages_valid(self._msgs) > 0
+            self._valid(self._msgs) > 0
+
+    _destroy = nmlib.notmuch_messages_destroy
+    _destroy.argtypes = [NotmuchMessagesP]
+    _destroy.restype = None
 
     def __del__(self):
         """Close and free the notmuch Messages"""
         if self._msgs is not None:
-            nmlib.notmuch_messages_destroy(self._msgs)
+            self._destroy(self._msgs)
 
     def print_messages(self, format, indent=0, entire_thread=False):
         """Outputs messages as needed for 'notmuch show' to sys.stdout
@@ -235,44 +250,60 @@ class Message(object):
 
     """notmuch_message_get_filename (notmuch_message_t *message)"""
     _get_filename = nmlib.notmuch_message_get_filename
+    _get_filename.argtypes = [NotmuchMessageP]
     _get_filename.restype = c_char_p
 
     """return all filenames for a message"""
     _get_filenames = nmlib.notmuch_message_get_filenames
-    _get_filenames.restype = c_void_p
+    _get_filenames.argtypes = [NotmuchMessageP]
+    _get_filenames.restype = NotmuchFilenamesP
 
     """notmuch_message_get_flag"""
     _get_flag = nmlib.notmuch_message_get_flag
-    _get_flag.restype = c_uint
+    _get_flag.argtypes = [NotmuchMessageP, c_uint]
+    _get_flag.restype = bool
+
+    """notmuch_message_set_flag"""
+    _set_flag = nmlib.notmuch_message_set_flag
+    _set_flag.argtypes = [NotmuchMessageP, c_uint, c_int]
+    _set_flag.restype = None
 
     """notmuch_message_get_message_id (notmuch_message_t *message)"""
     _get_message_id = nmlib.notmuch_message_get_message_id
+    _get_message_id.argtypes = [NotmuchMessageP]
     _get_message_id.restype = c_char_p
 
     """notmuch_message_get_thread_id"""
     _get_thread_id = nmlib.notmuch_message_get_thread_id
+    _get_thread_id.argtypes = [NotmuchMessageP]
     _get_thread_id.restype = c_char_p
 
     """notmuch_message_get_replies"""
     _get_replies = nmlib.notmuch_message_get_replies
-    _get_replies.restype = c_void_p
+    _get_replies.argtypes = [NotmuchMessageP]
+    _get_replies.restype = NotmuchMessagesP
 
     """notmuch_message_get_tags (notmuch_message_t *message)"""
     _get_tags = nmlib.notmuch_message_get_tags
-    _get_tags.restype = c_void_p
+    _get_tags.argtypes = [NotmuchMessageP]
+    _get_tags.restype = NotmuchTagsP
 
     _get_date = nmlib.notmuch_message_get_date
+    _get_date.argtypes = [NotmuchMessageP]
     _get_date.restype = c_long
 
     _get_header = nmlib.notmuch_message_get_header
+    _get_header.argtypes = [NotmuchMessageP, c_char_p]
     _get_header.restype = c_char_p
 
     """notmuch_status_t ..._maildir_flags_to_tags (notmuch_message_t *)"""
     _tags_to_maildir_flags = nmlib.notmuch_message_tags_to_maildir_flags
+    _tags_to_maildir_flags.argtypes = [NotmuchMessageP]
     _tags_to_maildir_flags.restype = c_int
 
     """notmuch_status_t ..._tags_to_maildir_flags (notmuch_message_t *)"""
     _maildir_flags_to_tags = nmlib.notmuch_message_maildir_flags_to_tags
+    _maildir_flags_to_tags.argtypes = [NotmuchMessageP]
     _maildir_flags_to_tags.restype = c_int
 
     #Constants: Flags that can be set/get with set_flag
@@ -450,7 +481,7 @@ class Message(object):
         """
         if self._msg is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
-        nmlib.notmuch_message_set_flag(self._msg, flag, value)
+        self._set_flag(self._msg, flag, value)
 
     def get_tags(self):
         """Returns the message tags
@@ -470,6 +501,10 @@ class Message(object):
             raise NotmuchError(STATUS.NULL_POINTER)
         return Tags(tags_p, self)
 
+    _add_tag = nmlib.notmuch_message_add_tag
+    _add_tag.argtypes = [NotmuchMessageP, c_char_p]
+    _add_tag.restype = c_uint
+
     def add_tag(self, tag, sync_maildir_flags=False):
         """Adds a tag to the given message
 
@@ -504,7 +539,7 @@ class Message(object):
         if self._msg is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        status = nmlib.notmuch_message_add_tag(self._msg, _str(tag))
+        status = self._add_tag(self._msg, _str(tag))
 
         # bail out on failure
         if status != STATUS.SUCCESS:
@@ -514,6 +549,10 @@ class Message(object):
             self.tags_to_maildir_flags()
         return STATUS.SUCCESS
 
+    _remove_tag = nmlib.notmuch_message_remove_tag
+    _remove_tag.argtypes = [NotmuchMessageP, c_char_p]
+    _remove_tag.restype = c_uint
+
     def remove_tag(self, tag, sync_maildir_flags=False):
         """Removes a tag from the given message
 
@@ -548,7 +587,7 @@ class Message(object):
         if self._msg is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        status = nmlib.notmuch_message_remove_tag(self._msg, _str(tag))
+        status = self._remove_tag(self._msg, _str(tag))
         # bail out on error
         if status != STATUS.SUCCESS:
             raise NotmuchError(status)
@@ -557,6 +596,10 @@ class Message(object):
             self.tags_to_maildir_flags()
         return STATUS.SUCCESS
 
+    _remove_all_tags = nmlib.notmuch_message_remove_all_tags
+    _remove_all_tags.argtypes = [NotmuchMessageP]
+    _remove_all_tags.restype = c_uint
+
     def remove_all_tags(self, sync_maildir_flags=False):
         """Removes all tags from the given message.
 
@@ -585,7 +628,7 @@ class Message(object):
         if self._msg is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        status = nmlib.notmuch_message_remove_all_tags(self._msg)
+        status = self._remove_all_tags(self._msg)
 
         # bail out on error
         if status != STATUS.SUCCESS:
@@ -595,6 +638,10 @@ class Message(object):
             self.tags_to_maildir_flags()
         return STATUS.SUCCESS
 
+    _freeze = nmlib.notmuch_message_freeze
+    _freeze.argtypes = [NotmuchMessageP]
+    _freeze.restype = c_uint
+
     def freeze(self):
         """Freezes the current state of 'message' within the database
 
@@ -639,7 +686,7 @@ class Message(object):
         if self._msg is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        status = nmlib.notmuch_message_freeze(self._msg)
+        status = self._freeze(self._msg)
 
         if STATUS.SUCCESS == status:
             # return on success
@@ -647,6 +694,10 @@ class Message(object):
 
         raise NotmuchError(status)
 
+    _thaw = nmlib.notmuch_message_thaw
+    _thaw.argtypes = [NotmuchMessageP]
+    _thaw.restype = c_uint
+
     def thaw(self):
         """Thaws the current 'message'
 
@@ -674,7 +725,7 @@ class Message(object):
         if self._msg is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        status = nmlib.notmuch_message_thaw(self._msg)
+        status = self._thaw(self._msg)
 
         if STATUS.SUCCESS == status:
             # return on success
@@ -896,7 +947,11 @@ class Message(object):
             res = cmp(list(self.get_filenames()), list(other.get_filenames()))
         return res
 
+    _destroy = nmlib.notmuch_message_destroy
+    _destroy.argtypes = [NotmuchMessageP]
+    _destroy.restype = None
+
     def __del__(self):
         """Close and free the notmuch Message"""
         if self._msg is not None:
-            nmlib.notmuch_message_destroy(self._msg)
+            self._destroy(self._msg)
diff --git a/bindings/python/notmuch/tag.py b/bindings/python/notmuch/tag.py
index 50e3686b..f3a3d27e 100644
--- a/bindings/python/notmuch/tag.py
+++ b/bindings/python/notmuch/tag.py
@@ -17,7 +17,7 @@ along with notmuch.  If not, see <http://www.gnu.org/licenses/>.
 Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
 """
 from ctypes import c_char_p
-from notmuch.globals import nmlib, STATUS, NotmuchError
+from notmuch.globals import nmlib, STATUS, NotmuchError, NotmuchTagsP
 
 
 class Tags(object):
@@ -50,6 +50,7 @@ class Tags(object):
 
     #notmuch_tags_get
     _get = nmlib.notmuch_tags_get
+    _get.argtypes = [NotmuchTagsP]
     _get.restype = c_char_p
 
     def __init__(self, tags_p, parent=None):
@@ -80,14 +81,22 @@ class Tags(object):
         """ Make Tags an iterator """
         return self
 
+    _valid = nmlib.notmuch_tags_valid
+    _valid.argtypes = [NotmuchTagsP]
+    _valid.restype = bool
+
+    _move_to_next = nmlib.notmuch_tags_move_to_next
+    _move_to_next.argtypes = [NotmuchTagsP]
+    _move_to_next.restype = None
+
     def next(self):
         if self._tags is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
-        if not nmlib.notmuch_tags_valid(self._tags):
+        if not self._valid(self._tags):
             self._tags = None
             raise StopIteration
         tag = Tags._get(self._tags).decode('UTF-8')
-        nmlib.notmuch_tags_move_to_next(self._tags)
+        self._move_to_next(self._tags)
         return tag
 
     def __nonzero__(self):
@@ -99,7 +108,7 @@ class Tags(object):
 
         :returns: True if the Tags() iterator has at least one more Tag
             left."""
-        return nmlib.notmuch_tags_valid(self._tags) > 0
+        return self._valid(self._tags) > 0
 
     def __str__(self):
         """The str() representation of Tags() is a space separated list of tags
@@ -112,7 +121,11 @@ class Tags(object):
         """
         return " ".join(self)
 
+    _destroy = nmlib.notmuch_tags_destroy
+    _destroy.argtypes = [NotmuchTagsP]
+    _destroy.restype = None
+
     def __del__(self):
         """Close and free the notmuch tags"""
         if self._tags is not None:
-            nmlib.notmuch_tags_destroy(self._tags)
+            self._destroy(self._tags)
diff --git a/bindings/python/notmuch/thread.py b/bindings/python/notmuch/thread.py
index 5e08eb31..d903c761 100644
--- a/bindings/python/notmuch/thread.py
+++ b/bindings/python/notmuch/thread.py
@@ -17,8 +17,10 @@ along with notmuch.  If not, see <http://www.gnu.org/licenses/>.
 Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
 """
 
-from ctypes import c_char_p, c_void_p, c_long
-from notmuch.globals import nmlib, STATUS, NotmuchError
+from ctypes import c_char_p, c_void_p, c_long, c_int
+from notmuch.globals import (nmlib, STATUS,
+    NotmuchError, NotmuchThreadP, NotmuchThreadsP, NotmuchMessagesP,
+    NotmuchTagsP,)
 from notmuch.message import Messages
 from notmuch.tag import Tags
 from datetime import date
@@ -75,7 +77,8 @@ class Threads(object):
 
     #notmuch_threads_get
     _get = nmlib.notmuch_threads_get
-    _get.restype = c_void_p
+    _get.argtypes = [NotmuchThreadsP]
+    _get.restype = NotmuchThreadP
 
     def __init__(self, threads_p, parent=None):
         """
@@ -105,16 +108,24 @@ class Threads(object):
         """ Make Threads an iterator """
         return self
 
+    _valid = nmlib.notmuch_threads_valid
+    _valid.argtypes = [NotmuchThreadsP]
+    _valid.restype = bool
+
+    _move_to_next = nmlib.notmuch_threads_move_to_next
+    _move_to_next.argtypes = [NotmuchThreadsP]
+    _move_to_next.restype = None
+
     def next(self):
         if self._threads is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
 
-        if not nmlib.notmuch_threads_valid(self._threads):
+        if not self._valid(self._threads):
             self._threads = None
             raise StopIteration
 
         thread = Thread(Threads._get(self._threads), self)
-        nmlib.notmuch_threads_move_to_next(self._threads)
+        self._move_to_next(self._threads)
         return thread
 
     def __len__(self):
@@ -134,8 +145,8 @@ class Threads(object):
 
         i = 0
         # returns 'bool'. On out-of-memory it returns None
-        while nmlib.notmuch_threads_valid(self._threads):
-            nmlib.notmuch_threads_move_to_next(self._threads)
+        while self._valid(self._threads):
+            self._move_to_next(self._threads)
             i += 1
         # reset self._threads to mark as "exhausted"
         self._threads = None
@@ -153,12 +164,16 @@ class Threads(object):
            Iterator, False if not. None on a "Out-of-memory" error.
         """
         return self._threads is not None and \
-            nmlib.notmuch_threads_valid(self._threads) > 0
+            self._valid(self._threads) > 0
+
+    _destroy = nmlib.notmuch_threads_destroy
+    _destroy.argtypes = [NotmuchThreadsP]
+    _destroy.argtypes = None
 
     def __del__(self):
         """Close and free the notmuch Threads"""
         if self._threads is not None:
-            nmlib.notmuch_messages_destroy(self._threads)
+            self._destroy(self._threads)
 
 
 class Thread(object):
@@ -166,29 +181,36 @@ class Thread(object):
 
     """notmuch_thread_get_thread_id"""
     _get_thread_id = nmlib.notmuch_thread_get_thread_id
+    _get_thread_id.argtypes = [NotmuchThreadP]
     _get_thread_id.restype = c_char_p
 
     """notmuch_thread_get_authors"""
     _get_authors = nmlib.notmuch_thread_get_authors
+    _get_authors.argtypes = [NotmuchThreadP]
     _get_authors.restype = c_char_p
 
     """notmuch_thread_get_subject"""
     _get_subject = nmlib.notmuch_thread_get_subject
+    _get_subject.argtypes = [NotmuchThreadP]
     _get_subject.restype = c_char_p
 
     """notmuch_thread_get_toplevel_messages"""
     _get_toplevel_messages = nmlib.notmuch_thread_get_toplevel_messages
-    _get_toplevel_messages.restype = c_void_p
+    _get_toplevel_messages.argtypes = [NotmuchThreadP]
+    _get_toplevel_messages.restype = NotmuchMessagesP
 
     _get_newest_date = nmlib.notmuch_thread_get_newest_date
+    _get_newest_date.argtypes = [NotmuchThreadP]
     _get_newest_date.restype = c_long
 
     _get_oldest_date = nmlib.notmuch_thread_get_oldest_date
+    _get_oldest_date.argtypes = [NotmuchThreadP]
     _get_oldest_date.restype = c_long
 
     """notmuch_thread_get_tags"""
     _get_tags = nmlib.notmuch_thread_get_tags
-    _get_tags.restype = c_void_p
+    _get_tags.argtypes = [NotmuchThreadP]
+    _get_tags.restype = NotmuchTagsP
 
     def __init__(self, thread_p, parent=None):
         """
@@ -225,6 +247,11 @@ class Thread(object):
             raise NotmuchError(STATUS.NOT_INITIALIZED)
         return Thread._get_thread_id(self._thread)
 
+
+    _get_total_messages = nmlib.notmuch_thread_get_total_messages
+    _get_total_messages.argtypes = [NotmuchThreadP]
+    _get_total_messages.restype = c_int
+
     def get_total_messages(self):
         """Get the total number of messages in 'thread'
 
@@ -236,7 +263,7 @@ class Thread(object):
         """
         if self._thread is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
-        return nmlib.notmuch_thread_get_total_messages(self._thread)
+        return self._get_total_messages(self._thread)
 
     def get_toplevel_messages(self):
         """Returns a :class:`Messages` iterator for the top-level messages in
@@ -267,6 +294,10 @@ class Thread(object):
 
         return Messages(msgs_p, self)
 
+    _get_matched_messages = nmlib.notmuch_thread_get_matched_messages
+    _get_matched_messages.argtypes = [NotmuchThreadP]
+    _get_matched_messages.restype = c_int
+
     def get_matched_messages(self):
         """Returns the number of messages in 'thread' that matched the query
 
@@ -278,7 +309,7 @@ class Thread(object):
         """
         if self._thread is None:
             raise NotmuchError(STATUS.NOT_INITIALIZED)
-        return nmlib.notmuch_thread_get_matched_messages(self._thread)
+        return self._get_matched_messages(self._thread)
 
     def get_authors(self):
         """Returns the authors of 'thread'
@@ -387,7 +418,11 @@ class Thread(object):
                                                        thread['subject'],
                                                        thread['tags'])
 
+    _destroy = nmlib.notmuch_thread_destroy
+    _destroy.argtypes = [NotmuchThreadP]
+    _destroy.restype = None
+
     def __del__(self):
         """Close and free the notmuch Thread"""
         if self._thread is not None:
-            nmlib.notmuch_thread_destroy(self._thread)
+            self._destroy(self._thread)