[Lldb-commits] [lldb] 7375212 - get rid of PythonInteger::GetInteger()
Lawrence D'Anna via lldb-commits
lldb-commits at lists.llvm.org
Tue Apr 21 17:17:45 PDT 2020
Author: Lawrence D'Anna
Date: 2020-04-21T16:55:51-07:00
New Revision: 7375212172951d2fc283c81d03c1a8588c3280c6
URL: https://github.com/llvm/llvm-project/commit/7375212172951d2fc283c81d03c1a8588c3280c6
DIFF: https://github.com/llvm/llvm-project/commit/7375212172951d2fc283c81d03c1a8588c3280c6.diff
LOG: get rid of PythonInteger::GetInteger()
Summary:
One small step in my long running quest to improve python exception handling in
LLDB. Replace GetInteger() which just returns an int with As<long long> and
friends, which return Expected types that can track python exceptions
Reviewers: labath, jasonmolenda, JDevlieghere, vadimcn
Reviewed By: labath
Subscribers: lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D78462
Added:
Modified:
lldb/bindings/python/python-typemaps.swig
lldb/bindings/python/python-wrapper.swig
lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp
lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h
lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
lldb/unittests/ScriptInterpreter/Python/PythonDataObjectsTests.cpp
Removed:
################################################################################
diff --git a/lldb/bindings/python/python-typemaps.swig b/lldb/bindings/python/python-typemaps.swig
index 46dcaf611a4f..c08aeab71f78 100644
--- a/lldb/bindings/python/python-typemaps.swig
+++ b/lldb/bindings/python/python-typemaps.swig
@@ -59,37 +59,25 @@
$result = list.release();
}
-
%typemap(in) lldb::tid_t {
- if (PythonInteger::Check($input))
- {
- PythonInteger py_int(PyRefType::Borrowed, $input);
- $1 = static_cast<lldb::tid_t>(py_int.GetInteger());
- }
- else
- {
- PyErr_SetString(PyExc_ValueError, "Expecting an integer");
+ PythonObject obj = Retain<PythonObject>($input);
+ lldb::tid_t value = unwrapOrSetPythonException(As<unsigned long long>(obj));
+ if (PyErr_Occurred())
return nullptr;
- }
+ $1 = value;
}
%typemap(in) lldb::StateType {
- if (PythonInteger::Check($input))
- {
- PythonInteger py_int(PyRefType::Borrowed, $input);
- int64_t state_type_value = py_int.GetInteger() ;
-
- if (state_type_value > lldb::StateType::kLastStateType) {
- PyErr_SetString(PyExc_ValueError, "Not a valid StateType value");
- return nullptr;
- }
- $1 = static_cast<lldb::StateType>(state_type_value);
- }
- else
- {
- PyErr_SetString(PyExc_ValueError, "Expecting an integer");
+ PythonObject obj = Retain<PythonObject>($input);
+ unsigned long long state_type_value =
+ unwrapOrSetPythonException(As<unsigned long long>(obj));
+ if (PyErr_Occurred())
+ return nullptr;
+ if (state_type_value > lldb::StateType::kLastStateType) {
+ PyErr_SetString(PyExc_ValueError, "Not a valid StateType value");
return nullptr;
}
+ $1 = static_cast<lldb::StateType>(state_type_value);
}
/* Typemap definitions to allow SWIG to properly handle char buffer. */
diff --git a/lldb/bindings/python/python-wrapper.swig b/lldb/bindings/python/python-wrapper.swig
index 3a63165cf58d..f9e89373fe25 100644
--- a/lldb/bindings/python/python-wrapper.swig
+++ b/lldb/bindings/python/python-wrapper.swig
@@ -444,6 +444,7 @@ LLDBSwigPythonCallBreakpointResolver
if (PyErr_Occurred())
{
PyErr_Print();
+ PyErr_Clear();
return 0;
}
@@ -457,11 +458,13 @@ LLDBSwigPythonCallBreakpointResolver
return 1;
}
- PythonInteger int_result = result.AsType<PythonInteger>();
- if (!int_result.IsAllocated())
- return 0;
+ long long ret_val = unwrapOrSetPythonException(As<long long>(result));
- unsigned int ret_val = int_result.GetInteger();
+ if (PyErr_Occurred()) {
+ PyErr_Print();
+ PyErr_Clear();
+ return 0;
+ }
return ret_val;
}
@@ -515,26 +518,17 @@ LLDBSwigPython_CalculateNumChildren
return 0;
}
- PythonObject result;
-
+ size_t ret_val;
if (arg_info.get().max_positional_args < 1)
- result = pfunc();
+ ret_val = unwrapOrSetPythonException(As<long long>(pfunc.Call()));
else
- result = pfunc(PythonInteger(max));
-
- if (!result.IsAllocated())
- return 0;
-
- PythonInteger int_result = result.AsType<PythonInteger>();
- if (!int_result.IsAllocated())
- return 0;
-
- size_t ret_val = int_result.GetInteger();
+ ret_val = unwrapOrSetPythonException(As<long long>(pfunc.Call(PythonInteger(max))));
- if (PyErr_Occurred()) //FIXME use Expected to catch python exceptions
+ if (PyErr_Occurred())
{
PyErr_Print();
PyErr_Clear();
+ return 0;
}
if (arg_info.get().max_positional_args < 1)
@@ -588,16 +582,15 @@ LLDBSwigPython_GetIndexOfChildWithName
if (!pfunc.IsAllocated())
return UINT32_MAX;
- PythonObject result = pfunc(PythonString(child_name));
+ llvm::Expected<PythonObject> result = pfunc.Call(PythonString(child_name));
- if (!result.IsAllocated())
- return UINT32_MAX;
+ long long retval = unwrapOrSetPythonException(As<long long>(std::move(result)));
- PythonInteger int_result = result.AsType<PythonInteger>();
- if (!int_result.IsAllocated())
+ if (PyErr_Occurred()) {
+ PyErr_Clear(); // FIXME print this? do something else
return UINT32_MAX;
+ }
- int64_t retval = int_result.GetInteger();
if (retval >= 0)
return (uint32_t)retval;
diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp b/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp
index 40ed22aceebf..3f00f671d88d 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp
@@ -44,7 +44,15 @@ template <>
Expected<long long> python::As<long long>(Expected<PythonObject> &&obj) {
if (!obj)
return obj.takeError();
- return obj.get().AsLongLong();
+ return obj->AsLongLong();
+}
+
+template <>
+Expected<unsigned long long>
+python::As<unsigned long long>(Expected<PythonObject> &&obj) {
+ if (!obj)
+ return obj.takeError();
+ return obj->AsUnsignedLongLong();
}
template <>
@@ -463,32 +471,22 @@ void PythonInteger::Convert(PyRefType &type, PyObject *&py_obj) {
#endif
}
-int64_t PythonInteger::GetInteger() const {
- if (m_py_obj) {
- assert(PyLong_Check(m_py_obj) &&
- "PythonInteger::GetInteger has a PyObject that isn't a PyLong");
-
- int overflow = 0;
- int64_t result = PyLong_AsLongLongAndOverflow(m_py_obj, &overflow);
- if (overflow != 0) {
- // We got an integer that overflows, like 18446744072853913392L we can't
- // use PyLong_AsLongLong() as it will return 0xffffffffffffffff. If we
- // use the unsigned long long it will work as expected.
- const uint64_t uval = PyLong_AsUnsignedLongLong(m_py_obj);
- result = static_cast<int64_t>(uval);
- }
- return result;
- }
- return UINT64_MAX;
-}
-
void PythonInteger::SetInteger(int64_t value) {
*this = Take<PythonInteger>(PyLong_FromLongLong(value));
}
StructuredData::IntegerSP PythonInteger::CreateStructuredInteger() const {
StructuredData::IntegerSP result(new StructuredData::Integer);
- result->SetValue(GetInteger());
+ // FIXME this is really not ideal. Errors are silently converted to 0
+ // and overflows are silently wrapped. But we'd need larger changes
+ // to StructuredData to fix it, so that's how it is for now.
+ llvm::Expected<unsigned long long> value = AsModuloUnsignedLongLong();
+ if (!value) {
+ llvm::consumeError(value.takeError());
+ result->SetValue(0);
+ } else {
+ result->SetValue(value.get());
+ }
return result;
}
diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h b/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h
index 16896803e136..b09f42e0d540 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h
@@ -370,6 +370,27 @@ class PythonObject {
return r;
}
+ llvm::Expected<long long> AsUnsignedLongLong() {
+ if (!m_py_obj)
+ return nullDeref();
+ assert(!PyErr_Occurred());
+ long long r = PyLong_AsUnsignedLongLong(m_py_obj);
+ if (PyErr_Occurred())
+ return exception();
+ return r;
+ }
+
+ llvm::Expected<unsigned long long> AsModuloUnsignedLongLong() const {
+ // wraps on overflow, instead of raising an error.
+ if (!m_py_obj)
+ return nullDeref();
+ assert(!PyErr_Occurred());
+ unsigned long long r = PyLong_AsUnsignedLongLongMask(m_py_obj);
+ if (PyErr_Occurred())
+ return exception();
+ return r;
+ }
+
llvm::Expected<bool> IsInstance(const PythonObject &cls) {
if (!m_py_obj || !cls.IsValid())
return nullDeref();
@@ -399,6 +420,10 @@ template <> llvm::Expected<bool> As<bool>(llvm::Expected<PythonObject> &&obj);
template <>
llvm::Expected<long long> As<long long>(llvm::Expected<PythonObject> &&obj);
+template <>
+llvm::Expected<unsigned long long>
+As<unsigned long long>(llvm::Expected<PythonObject> &&obj);
+
template <>
llvm::Expected<std::string> As<std::string>(llvm::Expected<PythonObject> &&obj);
@@ -491,8 +516,6 @@ class PythonInteger : public TypedPythonObject<PythonInteger> {
static bool Check(PyObject *py_obj);
static void Convert(PyRefType &type, PyObject *&py_obj);
- int64_t GetInteger() const;
-
void SetInteger(int64_t value);
StructuredData::IntegerSP CreateStructuredInteger() const;
diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
index c53b3bd0fb65..6f266772624a 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
@@ -3150,20 +3150,15 @@ uint32_t ScriptInterpreterPythonImpl::GetFlagsForCommandObject(
if (PyErr_Occurred())
PyErr_Clear();
- // right now we know this function exists and is callable..
- PythonObject py_return(
- PyRefType::Owned,
- PyObject_CallMethod(implementor.get(), callee_name, nullptr));
+ long long py_return = unwrapOrSetPythonException(
+ As<long long>(implementor.CallMethod(callee_name)));
// if it fails, print the error but otherwise go on
if (PyErr_Occurred()) {
PyErr_Print();
PyErr_Clear();
- }
-
- if (py_return.IsAllocated() && PythonInteger::Check(py_return.get())) {
- PythonInteger int_value(PyRefType::Borrowed, py_return.get());
- result = int_value.GetInteger();
+ } else {
+ result = py_return;
}
return result;
diff --git a/lldb/unittests/ScriptInterpreter/Python/PythonDataObjectsTests.cpp b/lldb/unittests/ScriptInterpreter/Python/PythonDataObjectsTests.cpp
index fe3b423b4842..75a1f5e67d32 100644
--- a/lldb/unittests/ScriptInterpreter/Python/PythonDataObjectsTests.cpp
+++ b/lldb/unittests/ScriptInterpreter/Python/PythonDataObjectsTests.cpp
@@ -123,13 +123,11 @@ TEST_F(PythonDataObjectsTest, TestInstanceNameResolutionNoDot) {
EXPECT_TRUE(major_version_field.IsAllocated());
EXPECT_TRUE(minor_version_field.IsAllocated());
- PythonInteger major_version_value =
- major_version_field.AsType<PythonInteger>();
- PythonInteger minor_version_value =
- minor_version_field.AsType<PythonInteger>();
+ auto major_version_value = As<long long>(major_version_field);
+ auto minor_version_value = As<long long>(minor_version_field);
- EXPECT_EQ(PY_MAJOR_VERSION, major_version_value.GetInteger());
- EXPECT_EQ(PY_MINOR_VERSION, minor_version_value.GetInteger());
+ EXPECT_THAT_EXPECTED(major_version_value, llvm::HasValue(PY_MAJOR_VERSION));
+ EXPECT_THAT_EXPECTED(minor_version_value, llvm::HasValue(PY_MINOR_VERSION));
}
TEST_F(PythonDataObjectsTest, TestGlobalNameResolutionWithDot) {
@@ -137,16 +135,14 @@ TEST_F(PythonDataObjectsTest, TestGlobalNameResolutionWithDot) {
EXPECT_TRUE(sys_path.IsAllocated());
EXPECT_TRUE(PythonList::Check(sys_path.get()));
- PythonInteger version_major =
- m_main_module.ResolveName("sys.version_info.major")
- .AsType<PythonInteger>();
- PythonInteger version_minor =
- m_main_module.ResolveName("sys.version_info.minor")
- .AsType<PythonInteger>();
- EXPECT_TRUE(version_major.IsAllocated());
- EXPECT_TRUE(version_minor.IsAllocated());
- EXPECT_EQ(PY_MAJOR_VERSION, version_major.GetInteger());
- EXPECT_EQ(PY_MINOR_VERSION, version_minor.GetInteger());
+ auto version_major =
+ As<long long>(m_main_module.ResolveName("sys.version_info.major"));
+
+ auto version_minor =
+ As<long long>(m_main_module.ResolveName("sys.version_info.minor"));
+
+ EXPECT_THAT_EXPECTED(version_major, llvm::HasValue(PY_MAJOR_VERSION));
+ EXPECT_THAT_EXPECTED(version_minor, llvm::HasValue(PY_MINOR_VERSION));
}
TEST_F(PythonDataObjectsTest, TestDictionaryResolutionWithDot) {
@@ -155,14 +151,14 @@ TEST_F(PythonDataObjectsTest, TestDictionaryResolutionWithDot) {
dict.SetItemForKey(PythonString("sys"), m_sys_module);
// Now use that dictionary to resolve `sys.version_info.major`
- PythonInteger version_major =
- PythonObject::ResolveNameWithDictionary("sys.version_info.major", dict)
- .AsType<PythonInteger>();
- PythonInteger version_minor =
- PythonObject::ResolveNameWithDictionary("sys.version_info.minor", dict)
- .AsType<PythonInteger>();
- EXPECT_EQ(PY_MAJOR_VERSION, version_major.GetInteger());
- EXPECT_EQ(PY_MINOR_VERSION, version_minor.GetInteger());
+ auto version_major = As<long long>(
+ PythonObject::ResolveNameWithDictionary("sys.version_info.major", dict));
+
+ auto version_minor = As<long long>(
+ PythonObject::ResolveNameWithDictionary("sys.version_info.minor", dict));
+
+ EXPECT_THAT_EXPECTED(version_major, llvm::HasValue(PY_MAJOR_VERSION));
+ EXPECT_THAT_EXPECTED(version_minor, llvm::HasValue(PY_MINOR_VERSION));
}
TEST_F(PythonDataObjectsTest, TestPythonInteger) {
@@ -176,7 +172,8 @@ TEST_F(PythonDataObjectsTest, TestPythonInteger) {
PythonInteger python_int(PyRefType::Owned, py_int);
EXPECT_EQ(PyObjectType::Integer, python_int.GetObjectType());
- EXPECT_EQ(12, python_int.GetInteger());
+ auto python_int_value = As<long long>(python_int);
+ EXPECT_THAT_EXPECTED(python_int_value, llvm::HasValue(12));
#endif
// Verify that `PythonInteger` works correctly when given a PyLong object.
@@ -187,12 +184,14 @@ TEST_F(PythonDataObjectsTest, TestPythonInteger) {
// Verify that you can reset the value and that it is reflected properly.
python_long.SetInteger(40);
- EXPECT_EQ(40, python_long.GetInteger());
+ auto e = As<long long>(python_long);
+ EXPECT_THAT_EXPECTED(e, llvm::HasValue(40));
// Test that creating a `PythonInteger` object works correctly with the
// int constructor.
PythonInteger constructed_int(7);
- EXPECT_EQ(7, constructed_int.GetInteger());
+ auto value = As<long long>(constructed_int);
+ EXPECT_THAT_EXPECTED(value, llvm::HasValue(7));
}
TEST_F(PythonDataObjectsTest, TestPythonBoolean) {
@@ -339,7 +338,8 @@ TEST_F(PythonDataObjectsTest, TestPythonListValueEquality) {
PythonInteger chk_int(PyRefType::Borrowed, chk_value1.get());
PythonString chk_str(PyRefType::Borrowed, chk_value2.get());
- EXPECT_EQ(long_value0, chk_int.GetInteger());
+ auto chkint = As<long long>(chk_value1);
+ ASSERT_THAT_EXPECTED(chkint, llvm::HasValue(long_value0));
EXPECT_EQ(string_value1, chk_str.GetString());
}
@@ -367,7 +367,8 @@ TEST_F(PythonDataObjectsTest, TestPythonListManipulation) {
PythonInteger chk_int(PyRefType::Borrowed, chk_value1.get());
PythonString chk_str(PyRefType::Borrowed, chk_value2.get());
- EXPECT_EQ(long_value0, chk_int.GetInteger());
+ auto e = As<long long>(chk_int);
+ EXPECT_THAT_EXPECTED(e, llvm::HasValue(long_value0));
EXPECT_EQ(string_value1, chk_str.GetString());
}
@@ -487,10 +488,10 @@ TEST_F(PythonDataObjectsTest, TestPythonDictionaryValueEquality) {
EXPECT_TRUE(PythonInteger::Check(chk_value1.get()));
EXPECT_TRUE(PythonString::Check(chk_value2.get()));
- PythonInteger chk_int(PyRefType::Borrowed, chk_value1.get());
PythonString chk_str(PyRefType::Borrowed, chk_value2.get());
+ auto chkint = As<long long>(chk_value1);
- EXPECT_EQ(value_0, chk_int.GetInteger());
+ EXPECT_THAT_EXPECTED(chkint, llvm::HasValue(value_0));
EXPECT_EQ(value_1, chk_str.GetString());
}
@@ -524,10 +525,10 @@ TEST_F(PythonDataObjectsTest, TestPythonDictionaryManipulation) {
EXPECT_TRUE(PythonInteger::Check(chk_value1.get()));
EXPECT_TRUE(PythonString::Check(chk_value2.get()));
- PythonInteger chk_int(PyRefType::Borrowed, chk_value1.get());
+ auto chkint = As<long long>(chk_value1);
PythonString chk_str(PyRefType::Borrowed, chk_value2.get());
- EXPECT_EQ(value_0, chk_int.GetInteger());
+ EXPECT_THAT_EXPECTED(chkint, llvm::HasValue(value_0));
EXPECT_EQ(value_1, chk_str.GetString());
}
@@ -594,10 +595,9 @@ TEST_F(PythonDataObjectsTest, TestObjectAttributes) {
EXPECT_TRUE(py_int.HasAttribute("numerator"));
EXPECT_FALSE(py_int.HasAttribute("this_should_not_exist"));
- PythonInteger numerator_attr =
- py_int.GetAttributeValue("numerator").AsType<PythonInteger>();
- EXPECT_TRUE(numerator_attr.IsAllocated());
- EXPECT_EQ(42, numerator_attr.GetInteger());
+ auto numerator_attr = As<long long>(py_int.GetAttributeValue("numerator"));
+
+ EXPECT_THAT_EXPECTED(numerator_attr, llvm::HasValue(42));
}
TEST_F(PythonDataObjectsTest, TestExtractingUInt64ThroughStructuredData) {
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