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import py
from rpython.rtyper.extfunc import ExtFuncEntry, register_external,\
is_external, lazy_register
from rpython.annotator import model as annmodel
from rpython.annotator.annrpython import RPythonAnnotator
from rpython.annotator.policy import AnnotatorPolicy
from rpython.rtyper.test.test_llinterp import interpret
class TestExtFuncEntry:
def test_basic(self):
"""
A ExtFuncEntry provides an annotation for a function, no need to flow
its graph.
"""
def b(x):
"NOT_RPYTHON"
return eval("x+40")
class BTestFuncEntry(ExtFuncEntry):
_about_ = b
name = 'b'
signature_args = [annmodel.SomeInteger()]
signature_result = annmodel.SomeInteger()
def f():
return b(2)
policy = AnnotatorPolicy()
a = RPythonAnnotator(policy=policy)
s = a.build_types(f, [])
assert isinstance(s, annmodel.SomeInteger)
res = interpret(f, [])
assert res == 42
def test_lltypeimpl(self):
"""
interpret() calls lltypeimpl instead of of the function/
"""
def c(y, x):
yyy
class CTestFuncEntry(ExtFuncEntry):
_about_ = c
name = 'ccc'
signature_args = [annmodel.SomeInteger()] * 2
signature_result = annmodel.SomeInteger()
def lltypeimpl(y, x):
return y + x
lltypeimpl = staticmethod(lltypeimpl)
def f():
return c(3, 4)
res = interpret(f, [])
assert res == 7
def test_register_external_signature(self):
"""
Test the standard interface for external functions.
"""
def dd():
pass
register_external(dd, [int], int)
def f():
return dd(3)
policy = AnnotatorPolicy()
a = RPythonAnnotator(policy=policy)
s = a.build_types(f, [])
assert isinstance(s, annmodel.SomeInteger)
def test_register_external_tuple_args(self):
"""
Verify the annotation of a registered external function which takes a
tuple argument.
"""
def function_with_tuple_arg():
"""
Dummy function which is declared via register_external to take a
tuple as an argument so that register_external's behavior for
tuple-taking functions can be verified.
"""
register_external(function_with_tuple_arg, [(int,)], int)
def f():
return function_with_tuple_arg((1,))
policy = AnnotatorPolicy()
a = RPythonAnnotator(policy=policy)
s = a.build_types(f, [])
# Not a very good assertion, but at least it means _something_ happened.
assert isinstance(s, annmodel.SomeInteger)
def test_register_external_return_goes_back(self):
"""
Check whether it works to pass the same list from one external
fun to another
[bookkeeper and list joining issues]
"""
def function_with_list():
pass
register_external(function_with_list, [[int]], int)
def function_returning_list():
pass
register_external(function_returning_list, [], [int])
def f():
return function_with_list(function_returning_list())
policy = AnnotatorPolicy()
a = RPythonAnnotator(policy=policy)
s = a.build_types(f, [])
assert isinstance(s, annmodel.SomeInteger)
def test_register_external_specialcase(self):
"""
When args=None, the external function accepts any arguments unmodified.
"""
def function_withspecialcase(arg):
return repr(arg)
register_external(function_withspecialcase, args=None, result=str)
def f():
x = function_withspecialcase
return x(33) + x("aaa") + x([]) + "\n"
policy = AnnotatorPolicy()
a = RPythonAnnotator(policy=policy)
s = a.build_types(f, [])
assert isinstance(s, annmodel.SomeString)
def test_str0(self):
str0 = annmodel.SomeString(no_nul=True)
def os_open(s):
pass
register_external(os_open, [str0], None)
def f(s):
return os_open(s)
policy = AnnotatorPolicy()
a = RPythonAnnotator(policy=policy)
a.build_types(f, [str]) # Does not raise
assert a.translator.config.translation.check_str_without_nul == False
# Now enable the str0 check, and try again with a similar function
a.translator.config.translation.check_str_without_nul=True
def g(s):
return os_open(s)
py.test.raises(Exception, a.build_types, g, [str])
a.build_types(g, [str0]) # Does not raise
def test_list_of_str0(self):
str0 = annmodel.SomeString(no_nul=True)
def os_execve(l):
pass
register_external(os_execve, [[str0]], None)
def f(l):
return os_execve(l)
policy = AnnotatorPolicy()
a = RPythonAnnotator(policy=policy)
a.build_types(f, [[str]]) # Does not raise
assert a.translator.config.translation.check_str_without_nul == False
# Now enable the str0 check, and try again with a similar function
a.translator.config.translation.check_str_without_nul=True
def g(l):
return os_execve(l)
py.test.raises(Exception, a.build_types, g, [[str]])
a.build_types(g, [[str0]]) # Does not raise
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