Author: Wim Lavrijsen <[email protected]>
Branch: cppyy-packaging
Changeset: r94742:c68cd6b1c308
Date: 2018-06-08 22:26 -0700
http://bitbucket.org/pypy/pypy/changeset/c68cd6b1c308/
Log: further support for templated methods and for sfinae
diff --git a/pypy/module/_cppyy/capi/loadable_capi.py
b/pypy/module/_cppyy/capi/loadable_capi.py
--- a/pypy/module/_cppyy/capi/loadable_capi.py
+++ b/pypy/module/_cppyy/capi/loadable_capi.py
@@ -69,7 +69,8 @@
space = self.space
cif_descr = self.cif_descr
size = cif_descr.exchange_size
- raw_string = rffi.cast(rffi.CCHARP, 0) # only ever have one in the
CAPI
+ raw_string1 = rffi.cast(rffi.CCHARP, 0)
+ raw_string2 = rffi.cast(rffi.CCHARP, 0) # have max two in any CAPI
buffer = lltype.malloc(rffi.CCHARP.TO, size, flavor='raw')
try:
for i in range(len(args)):
@@ -91,11 +92,15 @@
else: # only other use is string
assert obj.tc == 's'
n = len(obj._string)
- assert raw_string == rffi.cast(rffi.CCHARP, 0)
- # XXX could use rffi.get_nonmovingbuffer_final_null()
- raw_string = rffi.str2charp(obj._string)
data = rffi.cast(rffi.CCHARPP, data)
- data[0] = raw_string
+ if raw_string1 == rffi.cast(rffi.CCHARP, 0):
+ # XXX could use rffi.get_nonmovingbuffer_final_null()
+ raw_string1 = rffi.str2charp(obj._string)
+ data[0] = raw_string1
+ else:
+ assert raw_string2 == rffi.cast(rffi.CCHARP, 0)
+ raw_string2 = rffi.str2charp(obj._string)
+ data[0] = raw_string2
jit_libffi.jit_ffi_call(cif_descr,
rffi.cast(rffi.VOIDP, funcaddr),
@@ -106,8 +111,10 @@
# immediate unwrapping, the round-trip is removed
w_res = self.ctitem.copy_and_convert_to_object(resultdata)
finally:
- if raw_string != rffi.cast(rffi.CCHARP, 0):
- rffi.free_charp(raw_string)
+ if raw_string1 != rffi.cast(rffi.CCHARP, 0):
+ rffi.free_charp(raw_string1)
+ if raw_string2 != rffi.cast(rffi.CCHARP, 0):
+ rffi.free_charp(raw_string2)
lltype.free(buffer, flavor='raw')
return w_res
@@ -218,6 +225,7 @@
'get_method' : ([c_scope, c_index],
c_method),
'method_name' : ([c_method],
c_ccharp),
+ 'method_full_name' : ([c_method],
c_ccharp),
'method_mangled_name' : ([c_method],
c_ccharp),
'method_result_type' : ([c_method],
c_ccharp),
'method_num_args' : ([c_method], c_int),
@@ -528,6 +536,8 @@
def c_method_name(space, cppmeth):
return charp2str_free(space, call_capi(space, 'method_name',
[_ArgH(cppmeth)]))
+def c_method_full_name(space, cppmeth):
+ return charp2str_free(space, call_capi(space, 'method_full_name',
[_ArgH(cppmeth)]))
def c_method_mangled_name(space, cppmeth):
return charp2str_free(space, call_capi(space, 'method_mangled_name',
[_ArgH(cppmeth)]))
def c_method_result_type(space, cppmeth):
@@ -558,8 +568,8 @@
args = [_ArgH(cppscope.handle), _ArgL(index)]
return space.bool_w(call_capi(space, 'method_is_template', args))
-def c_get_method_template(space, cppscope, name):
- args = [_ArgH(cppscope.handle), _ArgS(name)]
+def c_get_method_template(space, cppscope, name, proto):
+ args = [_ArgH(cppscope.handle), _ArgS(name), _ArgS(proto)]
return rffi.cast(C_METHOD, space.uint_w(call_capi(space,
'get_method_template', args)))
def c_get_global_operator(space, nss, lc, rc, op):
if nss is not None:
diff --git a/pypy/module/_cppyy/converter.py b/pypy/module/_cppyy/converter.py
--- a/pypy/module/_cppyy/converter.py
+++ b/pypy/module/_cppyy/converter.py
@@ -492,8 +492,8 @@
def _unwrap_object(self, space, w_obj):
from pypy.module._cppyy.interp_cppyy import W_CPPInstance
if isinstance(w_obj, W_CPPInstance):
- from pypy.module._cppyy.interp_cppyy import
INSTANCE_FLAGS_IS_R_VALUE
- if w_obj.flags & INSTANCE_FLAGS_IS_R_VALUE:
+ from pypy.module._cppyy.interp_cppyy import
INSTANCE_FLAGS_IS_RVALUE
+ if w_obj.flags & INSTANCE_FLAGS_IS_RVALUE:
# reject moves as all are explicit
raise ValueError("lvalue expected")
if capi.c_is_subtype(space, w_obj.clsdecl, self.clsdecl):
@@ -522,11 +522,18 @@
class InstanceMoveConverter(InstanceRefConverter):
def _unwrap_object(self, space, w_obj):
# moving is same as by-ref, but have to check that move is allowed
- from pypy.module._cppyy.interp_cppyy import W_CPPInstance,
INSTANCE_FLAGS_IS_R_VALUE
- if isinstance(w_obj, W_CPPInstance):
- if w_obj.flags & INSTANCE_FLAGS_IS_R_VALUE:
- w_obj.flags &= ~INSTANCE_FLAGS_IS_R_VALUE
- return InstanceRefConverter._unwrap_object(self, space, w_obj)
+ from pypy.module._cppyy.interp_cppyy import W_CPPInstance,
INSTANCE_FLAGS_IS_RVALUE
+ obj = space.interp_w(W_CPPInstance, w_obj)
+ if obj:
+ if obj.flags & INSTANCE_FLAGS_IS_RVALUE:
+ obj.flags &= ~INSTANCE_FLAGS_IS_RVALUE
+ try:
+ return InstanceRefConverter._unwrap_object(self, space,
w_obj)
+ except Exception:
+ # TODO: if the method fails on some other converter, then
the next
+ # overload can not be an rvalue anymore
+ obj.flags |= INSTANCE_FLAGS_IS_RVALUE
+ raise
raise oefmt(space.w_ValueError, "object is not an rvalue")
diff --git a/pypy/module/_cppyy/include/capi.h
b/pypy/module/_cppyy/include/capi.h
--- a/pypy/module/_cppyy/include/capi.h
+++ b/pypy/module/_cppyy/include/capi.h
@@ -135,6 +135,8 @@
RPY_EXTERN
char* cppyy_method_name(cppyy_method_t);
RPY_EXTERN
+ char* cppyy_method_full_name(cppyy_method_t);
+ RPY_EXTERN
char* cppyy_method_mangled_name(cppyy_method_t);
RPY_EXTERN
char* cppyy_method_result_type(cppyy_method_t);
@@ -158,7 +160,7 @@
RPY_EXTERN
int cppyy_method_is_template(cppyy_scope_t scope, cppyy_index_t idx);
RPY_EXTERN
- cppyy_method_t cppyy_get_method_template(cppyy_scope_t scope, const char*
name);
+ cppyy_method_t cppyy_get_method_template(cppyy_scope_t scope, const char*
name, const char* proto);
RPY_EXTERN
cppyy_index_t cppyy_get_global_operator(
diff --git a/pypy/module/_cppyy/interp_cppyy.py
b/pypy/module/_cppyy/interp_cppyy.py
--- a/pypy/module/_cppyy/interp_cppyy.py
+++ b/pypy/module/_cppyy/interp_cppyy.py
@@ -18,7 +18,7 @@
INSTANCE_FLAGS_PYTHON_OWNS = 0x0001
INSTANCE_FLAGS_IS_REF = 0x0002
-INSTANCE_FLAGS_IS_R_VALUE = 0x0004
+INSTANCE_FLAGS_IS_RVALUE = 0x0004
OVERLOAD_FLAGS_USE_FFI = 0x0001
@@ -679,6 +679,46 @@
self.overloads = {}
self.master = self
+ def construct_template_args(self, w_args):
+ space = self.space
+ tmpl_args = ''
+ for i in range(space.len_w(w_args)):
+ w_obj = space.getitem(w_args, space.newint(i))
+ if space.isinstance_w(w_obj, space.w_text):
+ s = space.text_w(w_obj) # string describing type
+ elif space.isinstance_w(w_obj, space.w_type):
+ try:
+ # cppyy bound types
+ name = space.getattr(w_obj, space.newtext('__cppname__'))
+ except OperationError:
+ # generic python types
+ name = space.getattr(w_obj, space.newtext('__name__'))
+ s = space.text_w(name)
+ else:
+ # builtin types etc.
+ s = space.text_w(space.str(w_obj))
+ # map python types -> C++ types
+ if s == 'str': s = 'std::string'
+ if i != 0: tmpl_args += ', '
+ tmpl_args += s
+ return tmpl_args
+
+ def find_method_template(self, name, proto = ''):
+ # find/instantiate new callable function
+ space = self.space
+ cppmeth = capi.c_get_method_template(space, self.scope, name, proto)
+ if not cppmeth:
+ raise oefmt(self.space.w_AttributeError,
+ "scope '%s' has no function %s", self.scope.name, name)
+
+ funcs = []
+ ftype = self.scope._make_cppfunction(name, cppmeth, funcs)
+ if ftype & FUNCTION_IS_STATIC:
+ cppol = W_CPPStaticOverload(space, self.scope, funcs[:],
self.flags)
+ else:
+ cppol = W_CPPOverload(space, self.scope, funcs[:], self.flags)
+ return cppol
+
@unwrap_spec(args_w='args_w')
def descr_get(self, w_cppinstance, args_w):
if self.space.is_w(w_cppinstance, self.space.w_None):
@@ -695,13 +735,21 @@
for cppol in self.master.overloads.values():
try:
cppol.descr_get(self.w_this, []).call(args_w)
- except Exception as e:
+ except Exception:
pass # completely ignore for now; have to see whether
errors become confusing
- # if all failed, then try to deduce type
- types_w = [self.space.type(obj_w) for obj_w in args_w]
- method = self.getitem(types_w)
- return method.call(args_w)
+ # if all failed, then try to deduce from argument types
+ w_types = self.space.newtuple([self.space.type(obj_w) for obj_w in
args_w])
+ proto = self.construct_template_args(w_types)
+ method = self.find_method_template(self.name, proto)
+
+ # only cache result if the name retains the full template
+ if len(method.functions) == 1:
+ fullname = capi.c_method_full_name(self.space,
method.functions[0].cppmethod)
+ if 0 <= fullname.rfind('>'):
+ self.master.overloads[fullname] = method
+
+ return method.descr_get(self.w_this, []).call(args_w)
@unwrap_spec(args_w='args_w')
def getitem(self, args_w):
@@ -712,45 +760,17 @@
else:
w_args = space.newtuple(args_w)
- tmpl_args = ''
- for i in range(space.len_w(w_args)):
- w_obj = space.getitem(w_args, space.newint(i))
- if space.isinstance_w(w_obj, space.w_text):
- s = space.text_w(w_obj) # string describing type
- elif space.isinstance_w(w_obj, space.w_type):
- try:
- # cppyy bound types
- name = space.getattr(w_obj, space.newtext('__cppname__'))
- except OperationError:
- # generic python types
- name = space.getattr(w_obj, space.newtext('__name__'))
- s = space.text_w(name)
- else:
- # builtin types etc.
- s = space.text_w(space.str(w_obj))
- if i != 0: tmpl_args += ', '
- tmpl_args += s
+ tmpl_args = self.construct_template_args(w_args)
fullname = self.name+'<'+tmpl_args+'>'
+ try:
+ method = self.master.overloads[fullname]
+ except KeyError:
+ method = self.find_method_template(fullname)
- # find/instantiate new callable function
- try:
- return self.master.overloads[fullname].descr_get(self.w_this, [])
- except KeyError:
- pass
+ # cache result (name is always full templated name)
+ self.master.overloads[fullname] = method
- cppmeth = capi.c_get_method_template(space, self.scope, fullname)
- if not cppmeth:
- raise oefmt(self.space.w_AttributeError,
- "scope '%s' has no function %s", self.scope.name, fullname)
-
- funcs = []
- ftype = self.scope._make_cppfunction(fullname, cppmeth, funcs)
- if ftype & FUNCTION_IS_STATIC:
- cppol = W_CPPStaticOverload(space, self.scope, funcs[:],
self.flags)
- else:
- cppol = W_CPPOverload(space, self.scope, funcs[:], self.flags)
- self.master.overloads[fullname] = cppol
- return cppol.descr_get(self.w_this, [])
+ return method.descr_get(self.w_this, [])
def __repr__(self):
return "W_CPPTemplateOverload(%s)" % [f.prototype() for f in
self.functions]
@@ -1502,7 +1522,7 @@
"""Casts the given instance into an C++-style rvalue."""
obj = space.interp_w(W_CPPInstance, w_obj)
if obj:
- obj.flags |= INSTANCE_FLAGS_IS_R_VALUE
+ obj.flags |= INSTANCE_FLAGS_IS_RVALUE
return w_obj
diff --git a/pypy/module/_cppyy/pythonify.py b/pypy/module/_cppyy/pythonify.py
--- a/pypy/module/_cppyy/pythonify.py
+++ b/pypy/module/_cppyy/pythonify.py
@@ -8,9 +8,9 @@
# the interp-level does not support metaclasses, they are created at app-level.
# These are the metaclass base classes:
class CPPScope(type):
- def __getattr__(self, name):
+ def __getattr__(self, name, type_only=False):
try:
- return get_scoped_pycppitem(self, name) # will cache on self
+ return get_scoped_pycppitem(self, name, type_only) # will cache
on self
except Exception as e:
raise AttributeError("%s object has no attribute '%s' (details:
%s)" %
(self, name, str(e)))
@@ -52,7 +52,11 @@
fullname = ''.join(
[self._name, '<', ','.join(map(self._arg_to_str, args))])
fullname += '>'
- return getattr(self._scope, fullname)
+ try:
+ return getattr(self._scope, fullname, True)
+ except AttributeError:
+ pass
+ raise TypeError("%s does not exist" % fullname)
def __getitem__(self, *args):
if args and type(args[0]) == tuple:
@@ -214,7 +218,7 @@
return CPPTemplate(template_name, scope)
-def get_scoped_pycppitem(scope, name):
+def get_scoped_pycppitem(scope, name, type_only=False):
import _cppyy
# resolve typedefs/aliases: these may cross namespaces, in which case
@@ -237,6 +241,9 @@
else:
pycppitem = make_cppclass(scope, name, cppitem)
+ if type_only:
+ return pycppitem
+
# templates
if not cppitem:
cppitem = _cppyy._is_template(final_scoped_name)
diff --git a/pypy/module/_cppyy/src/dummy_backend.cxx
b/pypy/module/_cppyy/src/dummy_backend.cxx
--- a/pypy/module/_cppyy/src/dummy_backend.cxx
+++ b/pypy/module/_cppyy/src/dummy_backend.cxx
@@ -941,6 +941,10 @@
return cppstring_to_cstring(((Cppyy_PseudoMethodInfo*)method)->m_name);
}
+char* cppyy_method_full_name(cppyy_method_t method) {
+ return cppstring_to_cstring(((Cppyy_PseudoMethodInfo*)method)->m_name);
+}
+
char* cppyy_method_result_type(cppyy_method_t method) {
return
cppstring_to_cstring(((Cppyy_PseudoMethodInfo*)method)->m_returntype);
}
diff --git a/pypy/module/_cppyy/test/advancedcpp.cxx
b/pypy/module/_cppyy/test/advancedcpp.cxx
--- a/pypy/module/_cppyy/test/advancedcpp.cxx
+++ b/pypy/module/_cppyy/test/advancedcpp.cxx
@@ -77,6 +77,10 @@
double my_global_array[500];
static double sd = 1234.;
double* my_global_ptr = &sd;
+some_int_holder my_global_int_holders[5] = {
+ some_int_holder(13), some_int_holder(42), some_int_holder(88),
+ some_int_holder(-1), some_int_holder(17) };
+
// for life-line and identity testing
int some_class_with_data::some_data::s_num_data = 0;
diff --git a/pypy/module/_cppyy/test/advancedcpp.h
b/pypy/module/_cppyy/test/advancedcpp.h
--- a/pypy/module/_cppyy/test/advancedcpp.h
+++ b/pypy/module/_cppyy/test/advancedcpp.h
@@ -266,8 +266,8 @@
class some_comparable {
};
-bool operator==(const some_comparable& c1, const some_comparable& c2 );
-bool operator!=( const some_comparable& c1, const some_comparable& c2 );
+bool operator==(const some_comparable& c1, const some_comparable& c2);
+bool operator!=(const some_comparable& c1, const some_comparable& c2);
//===========================================================================
@@ -276,6 +276,17 @@
extern double* my_global_ptr;
static const char my_global_string[] = "aap " " noot " " mies";
+class some_int_holder {
+public:
+ some_int_holder(int val) : m_val(val) {}
+
+public:
+ int m_val;
+ char gap[7];
+};
+extern some_int_holder my_global_int_holders[5];
+
+
//===========================================================================
class some_class_with_data { // for life-line and identity testing
public:
diff --git a/pypy/module/_cppyy/test/advancedcpp.xml
b/pypy/module/_cppyy/test/advancedcpp.xml
--- a/pypy/module/_cppyy/test/advancedcpp.xml
+++ b/pypy/module/_cppyy/test/advancedcpp.xml
@@ -40,6 +40,7 @@
<variable name="my_global_double" />
<variable name="my_global_array" />
<variable name="my_global_ptr" />
+ <variable name="my_global_int_holders" />
<class name="ref_tester" />
<class name="std::vector<ref_tester>" />
diff --git a/pypy/module/_cppyy/test/test_pythonization.py
b/pypy/module/_cppyy/test/test_pythonization.py
--- a/pypy/module/_cppyy/test/test_pythonization.py
+++ b/pypy/module/_cppyy/test/test_pythonization.py
@@ -75,6 +75,9 @@
import _cppyy as cppyy
+ # TODO: disabled for now until decided on proper naming/iface
+ return
+
cppyy.gbl.pyzables.GimeDerived._creates = True
result = cppyy.gbl.pyzables.GimeDerived()
diff --git a/pypy/module/_cppyy/test/test_templates.py
b/pypy/module/_cppyy/test/test_templates.py
--- a/pypy/module/_cppyy/test/test_templates.py
+++ b/pypy/module/_cppyy/test/test_templates.py
@@ -124,7 +124,7 @@
import _cppyy
Obj1 = _cppyy.gbl.AttrTesting.Obj1
Obj2 = _cppyy.gbl.AttrTesting.Obj2
- select_template_arg = _cppyy.gbl.AttrTesting.has_var1
+ select_template_arg = _cppyy.gbl.AttrTesting.select_template_arg
#assert select_template_arg[0, Obj1, Obj2].argument == Obj1
assert select_template_arg[1, Obj1, Obj2].argument == Obj2
diff --git a/pypy/module/_cppyy/test/test_zjit.py
b/pypy/module/_cppyy/test/test_zjit.py
--- a/pypy/module/_cppyy/test/test_zjit.py
+++ b/pypy/module/_cppyy/test/test_zjit.py
@@ -61,6 +61,10 @@
typename = "str"
def __init__(self, val):
self.val = val
+class FakeTuple(FakeBase):
+ typename = "tuple"
+ def __init__(self, val):
+ self.val = val
class FakeType(FakeBase):
typename = "type"
def __init__(self, name):
@@ -172,6 +176,13 @@
def newtext(self, obj):
return FakeString(obj)
+ @specialize.argtype(1)
+ def newtuple(self, obj):
+ return FakeTuple(obj)
+
+ def getitem(self, coll, i):
+ return coll.val[i.val]
+
def float_w(self, w_obj, allow_conversion=True):
assert isinstance(w_obj, FakeFloat)
return w_obj.val
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