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

1 files changed, 25 insertions, 2 deletions

diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h b/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h
index 1689680..b09f42e 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h
@@ -370,6 +370,27 @@ public:
     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();
@@ -400,6 +421,10 @@ 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 @@ public:
   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;