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import py
import sys, shutil, os
from rpython.tool.udir import udir
from pypy.interpreter.gateway import interp2app
from pypy.module._cffi_backend.newtype import _clean_cache
if sys.platform == 'win32':
WIN32 = True
else:
WIN32 = False
class AppTestRecompilerPython:
spaceconfig = dict(usemodules=['_cffi_backend'])
def setup_class(cls):
try:
from cffi import FFI # <== the system one, which
from cffi import recompiler # needs to be at least cffi 1.0.0
from cffi import ffiplatform
except ImportError:
py.test.skip("system cffi module not found or older than 1.0.0")
space = cls.space
SRC = """
#define FOOBAR (-42)
static const int FOOBAZ = -43;
#define BIGPOS 420000000000L
#define BIGNEG -420000000000L
int add42(int x) { return x + 42; }
int globalvar42 = 1234;
const int globalconst42 = 4321;
const char *const globalconsthello = "hello";
struct foo_s;
typedef struct bar_s { int x; signed char a[]; } bar_t;
enum foo_e { AA, BB, CC };
struct B { struct C* c; }; struct C { struct B b; };
void init_test_re_python(void) { } /* windows hack */
void PyInit__test_re_python(void) { } /* windows hack */
"""
tmpdir = udir.join('test_re_python')
tmpdir.ensure(dir=1)
c_file = tmpdir.join('_test_re_python.c')
c_file.write(SRC)
ext = ffiplatform.get_extension(str(c_file), '_test_re_python',
export_symbols=['add42', 'globalvar42',
'globalconst42', 'globalconsthello'])
outputfilename = ffiplatform.compile(str(tmpdir), ext)
cls.w_extmod = space.wrap(outputfilename)
if WIN32:
unicode_name = u'load\u03betest.dll'
else:
unicode_name = u'load_caf\xe9' + os.path.splitext(outputfilename)[1]
try:
unicode_name.encode(sys.getfilesystemencoding())
except UnicodeEncodeError:
unicode_name = None # skip test_dlopen_unicode
if unicode_name is not None:
outputfileUname = os.path.join(unicode(udir), unicode_name)
shutil.copyfile(outputfilename, outputfileUname)
cls.w_extmodU = space.wrap(outputfileUname)
#mod.tmpdir = tmpdir
#
ffi = FFI()
ffi.cdef("""
#define FOOBAR -42
static const int FOOBAZ = -43;
#define BIGPOS 420000000000L
#define BIGNEG -420000000000L
int add42(int);
int globalvar42;
const int globalconst42;
const char *const globalconsthello = "hello";
int no_such_function(int);
int no_such_globalvar;
struct foo_s;
typedef struct bar_s { int x; signed char a[]; } bar_t;
enum foo_e { AA, BB, CC };
struct B { struct C* c; }; struct C { struct B b; };
typedef struct selfref { struct selfref *next; } *selfref_ptr_t;
void *dlopen(const char *filename, int flags);
int dlclose(void *handle);
""")
ffi.set_source('re_python_pysrc', None)
ffi.emit_python_code(str(tmpdir.join('re_python_pysrc.py')))
#
sub_ffi = FFI()
sub_ffi.cdef("static const int k2 = 121212;")
sub_ffi.include(ffi)
assert 'macro FOOBAR' in ffi._parser._declarations
assert 'macro FOOBAZ' in ffi._parser._declarations
sub_ffi.set_source('re_py_subsrc', None)
sub_ffi.emit_python_code(str(tmpdir.join('re_py_subsrc.py')))
#
cls.w_fix_path = space.appexec([space.wrap(str(tmpdir))], """(path):
def fix_path(ignored=None):
import _cffi_backend # force it to be initialized
import sys
if path not in sys.path:
sys.path.insert(0, path)
return fix_path
""")
cls.w_dl_libpath = space.w_None
if sys.platform != 'win32':
import ctypes.util
cls.w_dl_libpath = space.wrap(ctypes.util.find_library('dl'))
def teardown_method(self, meth):
self.space.appexec([], """():
import sys
for name in ['re_py_subsrc', 're_python_pysrc']:
if name in sys.modules:
del sys.modules[name]
""")
_clean_cache(self.space)
def test_constant_1(self):
self.fix_path()
from re_python_pysrc import ffi
assert ffi.integer_const('FOOBAR') == -42
assert ffi.integer_const('FOOBAZ') == -43
def test_large_constant(self):
self.fix_path()
from re_python_pysrc import ffi
assert ffi.integer_const('BIGPOS') == 420000000000
assert ffi.integer_const('BIGNEG') == -420000000000
def test_function(self):
import _cffi_backend
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmod)
assert lib.add42(-10) == 32
assert type(lib.add42) is _cffi_backend.FFI.CData
def test_dlopen_unicode(self):
if not getattr(self, 'extmodU', None):
skip("no unicode file name")
import _cffi_backend, sys
sys.pypy_initfsencoding() # initialize space.sys.filesystemencoding
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmodU)
assert lib.add42(-10) == 32
def test_dlclose(self):
import _cffi_backend
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmod)
ffi.dlclose(lib)
e = raises(ffi.error, getattr, lib, 'add42')
assert str(e.value) == (
"library '%s' has been closed" % (self.extmod,))
ffi.dlclose(lib) # does not raise
def test_constant_via_lib(self):
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmod)
assert lib.FOOBAR == -42
assert lib.FOOBAZ == -43
def test_opaque_struct(self):
self.fix_path()
from re_python_pysrc import ffi
ffi.cast("struct foo_s *", 0)
raises(TypeError, ffi.new, "struct foo_s *")
def test_nonopaque_struct(self):
self.fix_path()
from re_python_pysrc import ffi
for p in [ffi.new("struct bar_s *", [5, b"foobar"]),
ffi.new("bar_t *", [5, b"foobar"])]:
assert p.x == 5
assert p.a[0] == ord('f')
assert p.a[5] == ord('r')
def test_enum(self):
self.fix_path()
from re_python_pysrc import ffi
assert ffi.integer_const("BB") == 1
e = ffi.cast("enum foo_e", 2)
assert ffi.string(e) == "CC"
def test_include_1(self):
self.fix_path()
from re_py_subsrc import ffi
assert ffi.integer_const('FOOBAR') == -42
assert ffi.integer_const('FOOBAZ') == -43
assert ffi.integer_const('k2') == 121212
lib = ffi.dlopen(self.extmod) # <- a random unrelated library would be fine
assert lib.FOOBAR == -42
assert lib.FOOBAZ == -43
assert lib.k2 == 121212
#
p = ffi.new("bar_t *", [5, b"foobar"])
assert p.a[4] == ord('a')
def test_global_var(self):
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmod)
assert lib.globalvar42 == 1234
p = ffi.addressof(lib, 'globalvar42')
lib.globalvar42 += 5
assert p[0] == 1239
p[0] -= 1
assert lib.globalvar42 == 1238
def test_global_const_int(self):
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmod)
assert lib.globalconst42 == 4321
raises(AttributeError, ffi.addressof, lib, 'globalconst42')
def test_global_const_nonint(self):
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmod)
assert ffi.string(lib.globalconsthello, 8) == b"hello"
raises(AttributeError, ffi.addressof, lib, 'globalconsthello')
def test_rtld_constants(self):
self.fix_path()
from re_python_pysrc import ffi
ffi.RTLD_NOW # check that we have the attributes
ffi.RTLD_LAZY
ffi.RTLD_GLOBAL
def test_no_such_function_or_global_var(self):
self.fix_path()
from re_python_pysrc import ffi
lib = ffi.dlopen(self.extmod)
e = raises(ffi.error, getattr, lib, 'no_such_function')
assert str(e.value).startswith(
"symbol 'no_such_function' not found in library '")
e = raises(ffi.error, getattr, lib, 'no_such_globalvar')
assert str(e.value).startswith(
"symbol 'no_such_globalvar' not found in library '")
def test_check_version(self):
import _cffi_backend
e = raises(ImportError, _cffi_backend.FFI,
"foobar", _version=0x2594)
assert str(e.value).startswith(
"cffi out-of-line Python module 'foobar' has unknown version")
def test_selfref(self):
# based on cffi issue #429
self.fix_path()
from re_python_pysrc import ffi
ffi.new("selfref_ptr_t")
@py.test.mark.skipif('WIN32', reason='uses "dl" explicitly')
def test_dlopen_handle(self):
import _cffi_backend, sys
self.fix_path()
from re_python_pysrc import ffi
lib1 = ffi.dlopen(self.dl_libpath)
handle = lib1.dlopen(self.extmod.encode(sys.getfilesystemencoding()),
_cffi_backend.RTLD_LAZY)
assert ffi.typeof(handle) == ffi.typeof("void *")
assert handle
lib = ffi.dlopen(handle)
assert lib.add42(-10) == 32
assert type(lib.add42) is _cffi_backend.FFI.CData
err = lib1.dlclose(handle)
assert err == 0
def test_rec_structs_1(self):
self.fix_path()
from re_python_pysrc import ffi
sz = ffi.sizeof("struct B")
assert sz == ffi.sizeof("int *")
def test_rec_structs_2(self):
self.fix_path()
from re_python_pysrc import ffi
sz = ffi.sizeof("struct C")
assert sz == ffi.sizeof("int *")
|
