(memoized) convenience functions for typeid and sizeof, and some cleanup

python/cppyy/__init__.py

@@ -34,3 +34,36 @@ def cppdef(src):
 
 def include(header):
     gbl.gInterpreter.ProcessLine('#include "%s"' % header)
+
+def _get_name(tt):
+    try:
+        ttname = tt.__cppname__
+    except AttributeError:
+        ttname = tt.__name__
+    return ttname
+
+_sizes = {}
+def sizeof(tt):
+    if not isinstance(tt, type):
+        tt = type(tt)
+    try:
+        return _sizes[tt]
+    except KeyError:
+        sz = gbl.gInterpreter.ProcessLine("sizeof(%s);" % (_get_name(tt),))
+        _sizes[tt] = sz
+        return sz
+
+_typeids = {}
+def typeid(tt):
+    if not isinstance(tt, type):
+        tt = type(tt)
+    try:
+        return _typeids[tt]
+    except KeyError:
+        tidname = 'typeid_'+str(len(_typeids))
+        gbl.gInterpreter.ProcessLine(
+            "namespace _cppyy_internal { auto* %s = &typeid(%s); }" %\
+            (tidname, _get_name(tt),))
+        tid = getattr(gbl._cppyy_internal, tidname)
+        _typeids[tt] = tid
+        return tid

python/cppyy/_cpython_cppyy.py

@@ -5,9 +5,12 @@
 
 __all__ = [
     'gbl',
+    'load_reflection_info',
     'addressof',
     'bind_object',
-    'load_reflection_info',
+    'addressof',
+    'nullptr',
+    'move',
     '_backend',
     ]
 
@@ -32,7 +35,7 @@ def __call__(self, *args):
             if type(arg) == str:
                 arg = ','.join(map(lambda x: x.strip(), arg.split(',')))
             newargs.append(arg)
-        result = _backend.MakeCppTemplateClass( *newargs )
+        result = _backend.MakeCppTemplateClass(*newargs)
 
       # special case pythonization (builtin_map is not available from the C-API)
         if 'push_back' in result.__dict__:
@@ -75,8 +78,10 @@ class std(object):
 
 
 #- exports -------------------------------------------------------------------
-addressof = _backend.addressof
+addressof   = _backend.addressof
 bind_object = _backend.bind_object
+nullptr     = _backend.nullptr
+move        = _backend.move
 
 def load_reflection_info(name):
     sc = gbl.gSystem.Load(name)