def test_no_multiple_transform(self):
def f(x):
return x + 1
t = TranslationContext()
t.buildannotator().build_types(f, [int])
t.buildrtyper().specialize()
g = graphof(t, f)
etrafo = exceptiontransform.ExceptionTransformer(t)
etrafo.create_exception_handling(g)
etrafo2 = exceptiontransform.ExceptionTransformer(t)
py.test.raises(AssertionError, etrafo2.create_exception_handling, g)
def interpret(func, values):
interp, graph = get_interpreter(func, values)
t = interp.typer.annotator.translator
if t not in _already_transformed:
etrafo = exceptiontransform.ExceptionTransformer(t)
etrafo.transform_completely()
_already_transformed[t] = True
return interp.eval_graph(graph, values)
def test_half_exceptiontransformed_graphs():
from rpython.translator import exceptiontransform
def f1(x):
if x < 0:
raise ValueError
return 754
def g1(x):
try:
return f1(x)
except ValueError:
return 5
def f2(x):
if x < 0:
raise ValueError
return 21
def g2(x):
try:
return f2(x)
except ValueError:
return 6
f3 = lltype.functionptr(lltype.FuncType([lltype.Signed], lltype.Signed),
'f3',
_callable=f1)
def g3(x):
try:
return f3(x)
except ValueError:
return 7
def f(flag, x):
if flag == 1:
return g1(x)
elif flag == 2:
return g2(x)
else:
return g3(x)
t = TranslationContext()
t.buildannotator().build_types(f, [int, int])
t.buildrtyper().specialize()
etrafo = exceptiontransform.ExceptionTransformer(t)
etrafo.create_exception_handling(graphof(t, f1))
etrafo.create_exception_handling(graphof(t, g2))
etrafo.create_exception_handling(graphof(t, g3))
graph = graphof(t, f)
interp = LLInterpreter(t.rtyper)
res = interp.eval_graph(graph, [1, -64])
assert res == 5
res = interp.eval_graph(graph, [2, -897])
assert res == 6
res = interp.eval_graph(graph, [3, -9831])
assert res == 7
def test_preserve_can_raise(self):
def f(x):
raise ValueError
t = TranslationContext()
t.buildannotator().build_types(f, [int])
t.buildrtyper().specialize()
g = graphof(t, f)
etrafo = exceptiontransform.ExceptionTransformer(t)
etrafo.create_exception_handling(g)
assert etrafo.raise_analyzer.analyze_direct_call(g)
def transform_func(self, fn, inputtypes, backendopt=False):
t = TranslationContext()
t.buildannotator().build_types(fn, inputtypes)
t.buildrtyper().specialize()
if option.view:
t.view()
if backendopt:
backend_optimizations(t)
g = graphof(t, fn)
etrafo = exceptiontransform.ExceptionTransformer(t)
etrafo.create_exception_handling(g)
join_blocks(g)
if option.view:
t.view()
return t, g
def test_inserting_zeroing_op(self):
from rpython.rtyper.lltypesystem import lltype
S = lltype.GcStruct("S", ('x', lltype.Signed))
def f(x):
s = lltype.malloc(S)
s.x = 0
return s.x
t = TranslationContext()
t.buildannotator().build_types(f, [int])
t.buildrtyper().specialize()
g = graphof(t, f)
etrafo = exceptiontransform.ExceptionTransformer(t)
etrafo.create_exception_handling(g)
ops = dict.fromkeys([o.opname for b, o in g.iterblockops()])
assert 'zero_gc_pointers_inside' in ops
def test_exceptiontransformed_add_ovf():
from rpython.translator import exceptiontransform
def f(x, y):
try:
return ovfcheck(x + y)
except OverflowError:
return -42
t = TranslationContext()
t.buildannotator().build_types(f, [int, int])
t.buildrtyper().specialize()
etrafo = exceptiontransform.ExceptionTransformer(t)
graph = graphof(t, f)
etrafo.create_exception_handling(graph)
interp = LLInterpreter(t.rtyper)
res = interp.eval_graph(graph, [1, -64])
assert res == -63
res = interp.eval_graph(graph, [1, sys.maxint])
assert res == -42
